Merge pull request #3984 from lonvia/avoid-custom-table-definition-in-tests

Reuse table creation SQL in unittest

.codespellrc

@@ -0,0 +1,7 @@
+# https://github.com/codespell-project/codespell
+
+[codespell]
+skip = ./man/nominatim.1,data,./docs/styles.css,lib-php,module,munin,osm2pgsql,./test,./settings/*.lua,./settings/*.yaml,./settings/**/*.yaml,./settings/icu-rules,./nominatim/tokenizer/token_analysis/config_variants.py
+# Need to be lowercase in the list
+# Unter = Unter den Linden (an example address)
+ignore-words-list = inout,unter

.flake8

@@ -0,0 +1,11 @@
+[flake8]
+max-line-length = 100
+max-doc-length = 100
+extend-ignore =
+    # something == None constructs are needed for SQLAlchemy
+    E711
+per-file-ignores =
+    __init__.py: F401
+    test/python/utils/test_json_writer.py: E131
+    **/conftest.py: E402
+    test/bdd/*: F821

.github/FUNDING.yml

@@ -0,0 +1,2 @@
+github: lonvia
+custom: "https://nominatim.org/funding/"

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,7 @@
+contact_links:
+  - name: Nominatim Discussions
+    url: https://github.com/osm-search/Nominatim/discussions
+    about: Ask questions, get support, share ideas and discuss with community members.
+  - name: Discussions about OpenStreetMap data
+    url: https://community.openstreetmap.org/
+    about: Ask questions about the data used by Nominatim and discuss with the OSM community.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,22 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+<!-- Before opening a new feature request, please search through the open issue to check that your request hasn't been reported already. -->
+
+**Is your feature request related to a problem? Please describe.**
+<!-- A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] -->
+
+**Describe the solution you'd like**
+<!-- A clear and concise description of what you want to happen. -->
+
+**Describe alternatives you've considered**
+<!-- A clear and concise description of any alternative solutions or features you've considered. -->
+
+**Additional context**
+<!-- Add any other context or screenshots about the feature request here. -->

.github/ISSUE_TEMPLATE/report-issues-with-search-results.md

@@ -0,0 +1,39 @@
+---
+name: Report issues with search results
+about: You have searched something with Nominatim and did not get the expected result.
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+<!-- Note: this template is for reporting problems with searching. If you have found an issue with the data, you need to report/fix the issue directly in OpenStreetMap. See https://www.openstreetmap.org/fixthemap for details. -->
+
+## What did you search for?
+
+<!-- Please try to provide a link to your search. You  can go to https://nominatim.openstreetmap.org and repeat your search there. If you originally found the issue somewhere else, please tell us what software/website you were using. -->
+
+## What result did you get?
+
+## What result did you expect?
+
+**When the result is in the right place and just named wrongly:** 
+
+<!-- Please tell us the display name you expected. -->
+
+**When the result is missing completely:**
+
+<!-- Make sure that the data you are looking for is in OpenStreetMap. Provide a link to the OpenStreetMap object or if you cannot get it, a link to the map on https://openstreetmap.org where you expect the result to be.
+
+To get the link to the OSM object, you can try the following:
+
+ * Go to [https://openstreetmap.org](https://openstreetmap.org).
+ * Move to the area of the map where you expect the result and then zoom in as much as possible.
+ * Click on the question mark on the right side of the map. You get a question cursor. Use it to click on the map where your object is located.
+ * Find the object of interest in the list that appears on the left side.
+ * Click on the object and report back the URL that the browser shows.
+-->
+
+## Further details
+
+<!-- Anything else we should know about the search. Particularities with addresses in the area etc. -->

.github/ISSUE_TEMPLATE/report-problems-with-the-software.md

@@ -0,0 +1,42 @@
+---
+name: Report problems with the software
+about: You have your own installation of Nominatim and found a bug.
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+<!-- Note: if you are installing Nominatim through a docker image, you should report issues with the installation process with the docker repository first.
+
+     Do not send screen shots! Copy any console output directly into the issue.
+ -->
+
+**Describe the bug**
+<!-- A clear and concise description of what the bug is.-->
+
+**To Reproduce**
+<!-- Please describe what you did to get to the issue. -->
+
+**Software Environment (please complete the following information):**
+- Nominatim version: 
+- Postgresql version: 
+- Postgis version:
+- OS: 
+
+**Hardware Configuration (please complete the following information):**
+- RAM: 
+- number of CPUs:
+- type and size of disks:
+
+**Postgresql Configuration:**
+
+<!-- List any configuration items you changed in your postgresql configuration. -->
+
+**Nominatim Configuration:**
+
+<!-- List the contents of your customized `.env` file. -->
+
+**Additional context**
+
+<!-- Add any other context about the problem here. -->

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,12 @@
+## Summary
+<!-- Describe the purpose of your pull request and, if present, link to existing issues. -->
+
+## AI usage
+<!-- Please list where and to what extent AI was used. -->
+
+## Contributor guidelines (mandatory)
+<!-- We only accept pull requests that follow our guidelines. A deliberate violation may result in a ban. -->
+
+- [ ] I have adhered to the [coding style](https://github.com/osm-search/Nominatim/blob/master/CONTRIBUTING.md#coding-style)
+- [ ] I have [tested](https://github.com/osm-search/Nominatim/blob/master/CONTRIBUTING.md#testing) the proposed changes
+- [ ] I have [disclosed](https://github.com/osm-search/Nominatim/blob/master/CONTRIBUTING.md#using-ai-assisted-code-generators) above any use of AI to generate code, documentation, or the pull request description

.github/actions/build-nominatim/action.yml

@@ -0,0 +1,44 @@
+name: 'Build Nominatim'
+
+inputs:
+    dependencies:
+        description: 'Where to install dependencies from (pip/apt)'
+        required: false
+        default: 'pip'
+
+runs:
+    using: "composite"
+
+    steps:
+        - name: Clean out the disk
+          run: |
+            sudo rm -rf /opt/hostedtoolcache/go /opt/hostedtoolcache/CodeQL /usr/lib/jvm /usr/local/share/chromium /usr/local/lib/android
+            df -h
+          shell: bash
+        - name: Install general prerequisites
+          run: |
+            sudo apt-get install -y -qq libspatialite-dev libsqlite3-mod-spatialite libicu-dev virtualenv python3-dev osm2pgsql
+          shell: bash
+
+        - name: Install prerequisites from apt
+          run: |
+            sudo apt-get install -y -qq python3-icu python3-datrie python3-jinja2 python3-psutil python3-dotenv python3-yaml python3-sqlalchemy python3-psycopg python3-asyncpg python3-mwparserfromhell
+          shell: bash
+          if: inputs.dependencies == 'apt'
+
+        - name: Setup virtual environment (for pip)
+          run: |
+            virtualenv venv
+            ./venv/bin/pip install -U pip
+          shell: bash
+          if: inputs.dependencies == 'pip'
+
+        - name: Setup virtual environment (for apt)
+          run: |
+            virtualenv venv --system-site-packages
+          shell: bash
+          if: inputs.dependencies == 'apt'
+
+        - name: Build nominatim
+          run: ./venv/bin/pip install Nominatim/packaging/nominatim-{api,db}
+          shell: bash

.github/actions/setup-postgresql/action.yml

@@ -0,0 +1,43 @@
+name: 'Setup Postgresql and Postgis'
+
+inputs:
+    postgresql-version:
+        description: 'Version of PostgreSQL to install'
+        required: true
+
+runs:
+    using: "composite"
+
+    steps:
+        - name: Remove existing PostgreSQL
+          run: |
+              sudo /usr/share/postgresql-common/pgdg/apt.postgresql.org.sh -y
+              sudo apt-get purge -yq postgresql*
+              sudo apt-get update -qq
+
+          shell: bash
+
+        - name: Install PostgreSQL
+          run: |
+              sudo apt-get install -y -qq --no-install-suggests --no-install-recommends postgresql-client-${PGVER} postgresql-${PGVER}-postgis-3 postgresql-${PGVER}-postgis-3-scripts postgresql-contrib-${PGVER} postgresql-${PGVER}
+          shell: bash
+          env:
+              PGVER: ${{ inputs.postgresql-version }}
+
+        - name: Adapt postgresql configuration
+          run: |
+              echo 'fsync = off' | sudo tee /etc/postgresql/${PGVER}/main/conf.d/local.conf
+              echo 'synchronous_commit = off' | sudo tee -a /etc/postgresql/${PGVER}/main/conf.d/local.conf
+              echo 'full_page_writes = off' | sudo tee -a /etc/postgresql/${PGVER}/main/conf.d/local.conf
+              echo 'shared_buffers = 1GB' | sudo tee -a /etc/postgresql/${PGVER}/main/conf.d/local.conf
+              echo 'port = 5432' | sudo tee -a /etc/postgresql/${PGVER}/main/conf.d/local.conf
+          shell: bash
+          env:
+              PGVER: ${{ inputs.postgresql-version }}
+
+        - name: Setup database
+          run: |
+              sudo systemctl restart postgresql
+              sudo -u postgres createuser -S www-data
+              sudo -u postgres createuser -s runner
+          shell: bash

.github/workflows/ci-tests.yml

@@ -0,0 +1,361 @@
+name: CI Tests
+
+on: [ push, pull_request ]
+
+jobs:
+    create-archive:
+        runs-on: ubuntu-latest
+
+        steps:
+            - uses: actions/checkout@v4
+              with:
+                submodules: true
+
+            - uses: actions/cache@v4
+              with:
+                  path: |
+                     data/country_osm_grid.sql.gz
+                  key: nominatim-country-data-1
+
+            - name: Package tarball
+              run: |
+                  if [ ! -f data/country_osm_grid.sql.gz ]; then
+                      wget --no-verbose -O data/country_osm_grid.sql.gz https://www.nominatim.org/data/country_grid.sql.gz
+                  fi
+                  cd ..
+                  tar czf nominatim-src.tar.bz2 Nominatim
+                  mv nominatim-src.tar.bz2 Nominatim
+
+            - name: 'Upload Artifact'
+              uses: actions/upload-artifact@v4
+              with:
+                  name: full-source
+                  path: nominatim-src.tar.bz2
+                  retention-days: 1
+
+    tests:
+        needs: create-archive
+        strategy:
+            matrix:
+                flavour: ["ubuntu-22", "ubuntu-24"]
+                include:
+                    - flavour: ubuntu-22
+                      ubuntu: 22
+                      postgresql: 12
+                      lua: '5.1'
+                      dependencies: pip
+                      python: '3.9'
+                    - flavour: ubuntu-24
+                      ubuntu: 24
+                      postgresql: 18
+                      lua: '5.3'
+                      dependencies: apt
+                      python: 'builtin'
+
+        runs-on: ubuntu-${{ matrix.ubuntu }}.04
+
+        steps:
+            - uses: actions/download-artifact@v4
+              with:
+                  name: full-source
+
+            - name: Unpack Nominatim
+              run: tar xf nominatim-src.tar.bz2
+
+            - uses: ./Nominatim/.github/actions/setup-postgresql
+              with:
+                  postgresql-version: ${{ matrix.postgresql }}
+
+            - uses: ./Nominatim/.github/actions/build-nominatim
+              with:
+                  dependencies: ${{ matrix.dependencies }}
+
+            - uses: actions/cache@v4
+              with:
+                  path: |
+                     /usr/local/bin/osm2pgsql
+                  key: osm2pgsql-bin-22-1
+              if: matrix.ubuntu == '22'
+
+            - name: Set up Python
+              uses: actions/setup-python@v5
+              with:
+                  python-version: ${{ matrix.python }}
+              if: matrix.python != 'builtin'
+
+            - name: Compile osm2pgsql
+              run: |
+                  if [ ! -f /usr/local/bin/osm2pgsql ]; then
+                      sudo apt-get install -y -qq libboost-system-dev libboost-filesystem-dev libexpat1-dev zlib1g-dev libbz2-dev libpq-dev libproj-dev libicu-dev liblua${LUA_VERSION}-dev lua-dkjson nlohmann-json3-dev 
+                      mkdir osm2pgsql-build
+                      cd osm2pgsql-build
+                      git clone https://github.com/osm2pgsql-dev/osm2pgsql
+                      mkdir build
+                      cd build
+                      cmake ../osm2pgsql
+                      make
+                      sudo make install
+                      cd ../..
+                      rm -rf osm2pgsql-build
+                  else
+                      sudo apt-get install -y -qq libexpat1 liblua${LUA_VERSION}
+                  fi
+              if: matrix.ubuntu == '22'
+              env:
+                  LUA_VERSION: ${{ matrix.lua }}
+
+            - name: Install test prerequisites (apt)
+              run: sudo apt-get install -y -qq python3-pytest python3-pytest-asyncio uvicorn python3-falcon python3-aiosqlite python3-pyosmium
+              if: matrix.dependencies == 'apt'
+
+            - name: Install test prerequisites (pip)
+              run: ./venv/bin/pip install pytest-asyncio falcon starlette asgi_lifespan aiosqlite osmium uvicorn
+              if: matrix.dependencies == 'pip'
+
+            - name: Install test prerequisites
+              run: ./venv/bin/pip install pytest-bdd
+
+            - name: Install latest flake8
+              run: ./venv/bin/pip install -U flake8
+
+            - name: Python linting
+              run: ../venv/bin/python -m flake8 src test/python test/bdd
+              working-directory: Nominatim
+
+            - name: Install mypy and typechecking info
+              run: ./venv/bin/pip install -U mypy types-PyYAML types-jinja2 types-psutil types-requests types-ujson types-Pygments typing-extensions
+              if: matrix.dependencies == 'pip'
+
+            - name: Python static typechecking
+              run: ../venv/bin/python -m mypy --strict --python-version 3.9 src
+              working-directory: Nominatim
+              if: matrix.dependencies == 'pip'
+
+            - name: Python unit tests
+              run: ../venv/bin/python -m pytest test/python
+              working-directory: Nominatim
+
+            - name: BDD tests
+              run: |
+                  ../venv/bin/python -m pytest test/bdd --nominatim-purge
+              working-directory: Nominatim
+
+    install:
+        runs-on: ubuntu-latest
+        needs: create-archive
+
+        strategy:
+            matrix:
+                name: [Ubuntu-22, Ubuntu-24]
+                include:
+                    - name: Ubuntu-22
+                      image: "ubuntu:22.04"
+                      ubuntu: 22
+                      install_mode: install-apache
+                    - name: Ubuntu-24
+                      image: "ubuntu:24.04"
+                      ubuntu: 24
+                      install_mode: install-apache
+
+        container:
+            image: ${{ matrix.image }}
+            env:
+                LANG: en_US.UTF-8
+
+        defaults:
+            run:
+                shell: sudo -Hu nominatim bash --noprofile --norc -eo pipefail {0}
+
+        steps:
+            - name: Prepare container (Ubuntu)
+              run: |
+                  export APT_LISTCHANGES_FRONTEND=none
+                  export DEBIAN_FRONTEND=noninteractive
+                  apt-get update -qq
+                  apt-get install -y git sudo wget
+                  ln -snf /usr/share/zoneinfo/$CONTAINER_TIMEZONE /etc/localtime && echo $CONTAINER_TIMEZONE > /etc/timezone
+              shell: bash
+
+            - name: Setup import user
+              run: |
+                  useradd -m nominatim
+                  echo 'nominatim   ALL=(ALL:ALL) NOPASSWD: ALL' > /etc/sudoers.d/nominiatim
+                  echo "/home/nominatim/Nominatim/vagrant/Install-on-${OS}.sh no $INSTALL_MODE" > /home/nominatim/vagrant.sh
+              shell: bash
+              env:
+                OS: ${{ matrix.name }}
+                INSTALL_MODE: ${{ matrix.install_mode }}
+
+            - uses: actions/download-artifact@v4
+              with:
+                  name: full-source
+                  path: /home/nominatim
+
+            - name: Install Nominatim
+              run: |
+                export USERNAME=nominatim
+                export USERHOME=/home/nominatim
+                export NOSYSTEMD=yes
+                export HAVE_SELINUX=no
+                tar xf nominatim-src.tar.bz2
+                . vagrant.sh
+              working-directory: /home/nominatim
+
+            - name: Prepare import environment
+              run: |
+                  mv Nominatim/test/testdb/apidb-test-data.pbf test.pbf
+                  rm -rf Nominatim
+                  mkdir data-env-reverse
+              working-directory: /home/nominatim
+
+            - name: Add nominatim to path
+              run: |
+                sudo ln -s /home/nominatim/nominatim-venv/bin/nominatim /usr/local/bin/nominatim
+
+            - name: Need lua binary
+              run: |
+                sudo apt-get install -y lua5.4 lua-dkjson
+
+            - name: Print version
+              run: nominatim --version
+              working-directory: /home/nominatim/nominatim-project
+
+            - name: Print taginfo
+              run: lua ./nominatim-venv/lib/*/site-packages/nominatim_db/resources/lib-lua/taginfo.lua
+              working-directory: /home/nominatim
+
+            - name: Collect host OS information
+              run: nominatim admin --collect-os-info
+              working-directory: /home/nominatim/nominatim-project
+
+            - name: Import
+              run: nominatim import --osm-file ../test.pbf
+              working-directory: /home/nominatim/nominatim-project
+
+            - name: Import special phrases
+              run: nominatim special-phrases --import-from-wiki
+              working-directory: /home/nominatim/nominatim-project
+
+            - name: Check full import
+              run: nominatim admin --check-database
+              working-directory: /home/nominatim/nominatim-project
+
+            - name: Warm up database
+              run: nominatim admin --warm
+              working-directory: /home/nominatim/nominatim-project
+
+            - name: Install osmium
+              run: |
+                  /home/nominatim/nominatim-venv/bin/pip install osmium
+
+            - name: Run update
+              run: |
+                  nominatim replication --init
+                  NOMINATIM_REPLICATION_MAX_DIFF=1 nominatim replication --once
+              working-directory: /home/nominatim/nominatim-project
+
+            - name: Clean up database
+              run: nominatim refresh --postcodes --word-tokens
+              working-directory: /home/nominatim/nominatim-project
+
+            - name: Run reverse-only import
+              run : |
+                  echo 'NOMINATIM_DATABASE_DSN="pgsql:dbname=reverse"' >> .env
+                  nominatim import --osm-file ../test.pbf --reverse-only --no-updates
+              working-directory: /home/nominatim/data-env-reverse
+
+            - name: Check reverse-only import
+              run: nominatim admin --check-database
+              working-directory: /home/nominatim/data-env-reverse
+
+            - name: Clean up database (reverse-only import)
+              run: nominatim refresh --postcodes --word-tokens
+              working-directory: /home/nominatim/nominatim-project
+
+    install-no-superuser:
+      runs-on: ubuntu-24.04
+      needs: create-archive
+
+      steps:
+          - uses: actions/download-artifact@v4
+            with:
+                name: full-source
+
+          - name: Unpack Nominatim
+            run: tar xf nominatim-src.tar.bz2
+
+          - uses: ./Nominatim/.github/actions/setup-postgresql
+            with:
+                postgresql-version: 16
+
+          - uses: ./Nominatim/.github/actions/build-nominatim
+
+          - name: Prepare import environment
+            run: |
+                mv Nominatim/test/testdb/apidb-test-data.pbf test.pbf
+                rm -rf Nominatim
+
+          - name: Prepare Database
+            run: |
+                ./venv/bin/nominatim import --prepare-database
+
+          - name: Create import user
+            run: |
+                sudo -u postgres createuser osm-import
+                psql -d nominatim -c "ALTER USER \"osm-import\" WITH PASSWORD 'osm-import'"
+                psql -d nominatim -c 'GRANT CREATE ON SCHEMA public TO "osm-import"'
+
+          - name: Run import
+            run: |
+                NOMINATIM_DATABASE_DSN="pgsql:host=127.0.0.1;dbname=nominatim;user=osm-import;password=osm-import" ./venv/bin/nominatim import --continue import-from-file --osm-file test.pbf
+
+          - name: Check full import
+            run: ./venv/bin/nominatim admin --check-database
+
+    migrate:
+      runs-on: ubuntu-24.04
+      needs: create-archive
+
+      steps:
+          - uses: actions/download-artifact@v4
+            with:
+                name: full-source
+
+          - name: Unpack Nominatim
+            run: tar xf nominatim-src.tar.bz2
+
+          - uses: ./Nominatim/.github/actions/setup-postgresql
+            with:
+                postgresql-version: 18
+
+          - name: Install Python dependencies
+            run: |
+              sudo apt-get install --no-install-recommends virtualenv osm2pgsql
+
+          - name: Install Nominatim master version
+            run: |
+              virtualenv master
+              cd Nominatim
+              ../master/bin/pip install packaging/nominatim-db
+
+          - name: Install Nominatim from pypi
+            run: |
+              virtualenv release
+              ./release/bin/pip install nominatim-db
+
+          - name: Import Nominatim database using release
+            run: |
+              ./release/bin/nominatim import --osm-file Nominatim/test/testdb/apidb-test-data.pbf
+              ./release/bin/nominatim add-data --file Nominatim/test/testdb/additional_api_test.data.osm
+
+          - name: Migrate to master version
+            run: |
+              ./master/bin/nominatim admin --migrate
+              ./release/bin/nominatim add-data --file Nominatim/test/testdb/additional_api_test.data.osm
+
+    codespell:
+      runs-on: ubuntu-latest
+      steps:
+          - uses: codespell-project/actions-codespell@v2
+            with:
+                only_warn: 1

.gitignore

@@ -1,11 +1,13 @@
 *.log
 *.pyc
+*.swp
+
+docs/develop/*.png
+site-html
 
 build
-settings/local.php
-
-data/wiki_import.sql
-data/wiki_specialphrases.sql
-data/osmosischange.osc
+dist
+.coverage
 
 .vagrant
+data/country_osm_grid.sql.gz

.gitmodules

@@ -1,4 +0,0 @@
-[submodule "osm2pgsql"]
-	path = osm2pgsql
-	url = https://github.com/openstreetmap/osm2pgsql.git
-    ignore = dirty

.mypy.ini

@@ -0,0 +1,23 @@
+[mypy]
+plugins = sqlalchemy.ext.mypy.plugin
+
+[mypy-sanic_cors.*]
+ignore_missing_imports = True
+
+[mypy-icu.*]
+ignore_missing_imports = True
+
+[mypy-asyncpg.*]
+ignore_missing_imports = True
+
+[mypy-datrie.*]
+ignore_missing_imports = True
+
+[mypy-dotenv.*]
+ignore_missing_imports = True
+
+[mypy-falcon.*]
+ignore_missing_imports = True
+
+[mypy-geoalchemy2.*]
+ignore_missing_imports = True

.travis.yml

@@ -1,31 +0,0 @@
----
-sudo: required
-dist: trusty
-language: python
-python:
-  - "3.6"
-addons:
-  postgresql: "9.6"
-git:
-  depth: 3
-env:
-  - TEST_SUITE=tests
-  - TEST_SUITE=monaco
-install:
-  - vagrant/install-on-travis-ci.sh
-before_script:
-  - psql -U postgres -c "create extension postgis"
-script:
-  - cd $TRAVIS_BUILD_DIR/build
-  - if [[ $TEST_SUITE == "monaco" ]]; then wget --no-verbose --output-document=../data/monaco.osm.pbf http://download.geofabrik.de/europe/monaco-latest.osm.pbf; fi
-  - if [[ $TEST_SUITE == "monaco" ]]; then ./utils/setup.php --osm-file ../data/monaco.osm.pbf --osm2pgsql-cache 1000 --all 2>&1 | grep -v 'ETA (seconds)'; fi
-  - if [[ $TEST_SUITE == "monaco" ]]; then ./utils/specialphrases.php --wiki-import | psql -d test_api_nominatim >/dev/null; fi
-  - cd $TRAVIS_BUILD_DIR/test/php
-  - if [[ $TEST_SUITE == "tests" ]]; then phpunit ./ ; fi
-  - if [[ $TEST_SUITE == "tests" ]]; then phpcs --report-width=120 */**.php ; fi
-  - cd $TRAVIS_BUILD_DIR/test/bdd
-  - # behave --format=progress3 api
-  - if [[ $TEST_SUITE == "tests" ]]; then behave --format=progress3 db ; fi
-  - if [[ $TEST_SUITE == "tests" ]]; then behave --format=progress3 osm2pgsql ; fi
-notifications:
-  email: false

AUTHORS

@@ -1,18 +1,15 @@
 Nominatim was written by:
 
-  Brian Quinion
-  Sarah Hoffmann
-  Marc Tobias Metten
-  markigail
-  IrlJidel
-  Frederik Ramm
-  Michael Spreng
-  Daniele Forsi
-  mfn
-  Grant Slater
-  Andree Klattenhoff
-  appelflap
-  b3nn0
-  Spin0us
-  Kurt Roeckx
-  Rodolphe Quiédeville
+* Brian Quinion
+* Sarah Hoffmann
+* Marc Tobias Metten
+
+* markigail
+* AntoJvlt
+* gemo1011
+* darkshredder
+
+and many more.
+
+For a full list of contributors see the Git logs or visit
+https://github.com/openstreetmap/Nominatim/graphs/contributors

CMakeLists.txt

@@ -1,150 +0,0 @@
-#-----------------------------------------------------------------------------
-#
-#  CMake Config
-#
-#  Nominatim
-#
-#-----------------------------------------------------------------------------
-
-cmake_minimum_required(VERSION 2.8 FATAL_ERROR)
-list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
-
-
-#-----------------------------------------------------------------------------
-#
-#  Project version
-#
-#-----------------------------------------------------------------------------
-
-project(nominatim)
-
-set(NOMINATIM_VERSION_MAJOR 3)
-set(NOMINATIM_VERSION_MINOR 0)
-
-set(NOMINATIM_VERSION "${NOMINATIM_VERSION_MAJOR}.${NOMINATIM_VERSION_MINOR}")
-
-add_definitions(-DNOMINATIM_VERSION="${NOMINATIM_VERSION}")
-
-
-#-----------------------------------------------------------------------------
-#
-#  Find external dependencies
-#
-#-----------------------------------------------------------------------------
-
-set(BUILD_TESTS off CACHE BOOL "Build test suite" FORCE)
-set(WITH_LUA off CACHE BOOL "Build with lua support" FORCE)
-
-if (NOT EXISTS "${CMAKE_SOURCE_DIR}/osm2pgsql/CMakeLists.txt")
-    message(FATAL_ERROR "The osm2pgsql directory is empty.\
-    Did you forget to check out Nominatim recursively?\
-    \nTry updating submodules with: git submodule update --init")
-endif()
-add_subdirectory(osm2pgsql)
-
-find_package(Threads REQUIRED)
-
-unset(PostgreSQL_TYPE_INCLUDE_DIR CACHE)
-set(PostgreSQL_TYPE_INCLUDE_DIR "/usr/include/")
-find_package(PostgreSQL REQUIRED)
-include_directories(${PostgreSQL_INCLUDE_DIRS})
-link_directories(${PostgreSQL_LIBRARY_DIRS})
-
-find_program(PYOSMIUM pyosmium-get-changes)
-if (NOT EXISTS "${PYOSMIUM}")
-    set(PYOSMIUM_PATH "/nonexistent")
-        message(WARNING "pyosmium-get-changes not found (required for updates)")
-else()
-    set(PYOSMIUM_PATH "${PYOSMIUM}")
-    message(STATUS "Using pyosmium-get-changes at ${PYOSMIUM_PATH}")
-endif()
-
-
-find_program(PG_CONFIG pg_config)
-execute_process(COMMAND ${PG_CONFIG} --pgxs
-                OUTPUT_VARIABLE PGXS
-                OUTPUT_STRIP_TRAILING_WHITESPACE)
-
-if (NOT EXISTS "${PGXS}")
-    message(FATAL_ERROR "Postgresql server package not found.")
-endif()
-
-find_package(ZLIB REQUIRED)
-
-find_package(BZip2 REQUIRED)
-
-find_package(LibXml2 REQUIRED)
-include_directories(${LIBXML2_INCLUDE_DIR})
-
-#-----------------------------------------------------------------------------
-#
-# Setup settings and paths
-#
-#-----------------------------------------------------------------------------
-
-set(CUSTOMFILES
-    settings/phrase_settings.php
-    website/deletable.php
-    website/details.php
-    website/hierarchy.php
-    website/lookup.php
-    website/polygons.php
-    website/reverse.php
-    website/search.php
-    website/status.php
-    utils/blocks.php
-    utils/country_languages.php
-    utils/imports.php
-    utils/importWikipedia.php
-    utils/query.php
-    utils/server_compare.php
-    utils/setup.php
-    utils/specialphrases.php
-    utils/update.php
-    utils/warm.php
-   )
-
-foreach (cfile ${CUSTOMFILES})
-    configure_file(${PROJECT_SOURCE_DIR}/${cfile} ${PROJECT_BINARY_DIR}/${cfile})
-endforeach()
-
-configure_file(${PROJECT_SOURCE_DIR}/settings/defaults.php ${PROJECT_BINARY_DIR}/settings/settings.php)
-
-set(WEBPATHS css images js)
-
-foreach (wp ${WEBPATHS})
-    execute_process(
-        COMMAND ln -sf ${PROJECT_SOURCE_DIR}/website/${wp} ${PROJECT_BINARY_DIR}/website/
-    )
-endforeach()
-
-
-#-----------------------------------------------------------------------------
-#
-# Tests
-#
-#-----------------------------------------------------------------------------
-
-include(CTest)
-
-set(TEST_BDD db osm2pgsql api)
-
-foreach (test ${TEST_BDD})
-    add_test(NAME bdd_${test}
-             COMMAND lettuce features/${test}
-             WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/tests)
-    set_tests_properties(bdd_${test}
-        PROPERTIES ENVIRONMENT "NOMINATIM_DIR=${PROJECT_BINARY_DIR}")
-endforeach()
-
-add_test(NAME php
-         COMMAND phpunit ./
-         WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/tests-php)
-
-#-----------------------------------------------------------------------------
-
-add_subdirectory(module)
-add_subdirectory(nominatim)
-add_subdirectory(docs)
-
-#-----------------------------------------------------------------------------

CONTRIBUTING.md

@@ -4,44 +4,12 @@
 
 Bugs can be reported at https://github.com/openstreetmap/Nominatim/issues.
 Please always open a separate issue for each problem. In particular, do
-not add your bugs to closed issues. They may looks similar to you but
+not add your bugs to closed issues. They may look similar to you but
 often are completely different from the maintainer's point of view.
 
-### When Reporting Bad Search Results...
-
-Please make sure to add the following information:
-
- * the URL of the query that produces the bad result
- * the result you are getting
- * the expected result, preferably a link to the OSM object you want to find,
-   otherwise an address that is as precise as possible
- 
- To get the link to the OSM object, you can try the following:
- 
- * go to https://openstreetmap.org
- * zoom to the area of the map where you expect the result and
-   zoom in as much as possible
- * click on the question mark on the right side of the map,
-   then with the queston cursor on the map where your object is located
- * find the object of interest in the list that appears on the left side
- * click on the object and report the URL back that the browser shows
-
-### When Reporting Problems with your Installation...
-
-Please add the following information to your issue:
-
- * hardware configuration: RAM size, CPUs, kind and size of disks
- * Operating system (also mention if you are running on a cloud service)
- * Postgres and Postgis version
- * list of settings you changed in your Postgres configuration
- * Nominatim version (release version or,
-   if you run from the git repo, the output of `git rev-parse HEAD`)
- * (if applicable) exact command line of the command that was causing the issue
-
-
 ## Workflow for Pull Requests
 
-We love to get pull reuqests from you. We operate the "Fork & Pull" model
+We love to get pull requests from you. We operate the "Fork & Pull" model
 explained at
 
 https://help.github.com/articles/using-pull-requests
@@ -53,7 +21,7 @@ that you are responsible for your pull requests. You should be prepared
 to get change requests because as the maintainers we have to make sure
 that your contribution fits well with the rest of the code. Please make
 sure that you have time to react to these comments and amend the code or
-engage in a conversion. Do not expect that others will pick up your code,
+engage in a conversation. Do not expect that others will pick up your code,
 it will almost never happen.
 
 Please open a separate pull request for each issue you want to address.
@@ -62,13 +30,35 @@ feature pull requests. If you plan to make larger changes, please open
 an issue first or comment on the appropriate issue already existing so
 that duplicate work can be avoided.
 
+### Using AI-assisted code generators
+
+PRs that include AI-generated content, may that be in code, in the PR
+description or in documentation need to
+
+1. clearly mark the AI-generated sections as such, for example, by
+   mentioning all use of AI in the PR description, and
+2. include proof that you have run the generated code on an actual
+   installation of Nominatim. Adding and executing tests will not be
+   sufficient. You need to show that the code actually solves the problem
+   the PR claims to solve.
+
+## Getting Started with Development
+
+Please see the development section of the Nominatim documentation for
+
+* [an architecture overview](https://nominatim.org/release-docs/develop/develop/overview/)
+  and backgrounds on some of the algorithms
+* [how to set up a development environment](https://nominatim.org/release-docs/develop/develop/Development-Environment/)
+* and background on [how tests are organised](https://nominatim.org/release-docs/develop/develop/Testing/)
+
+
 ## Coding style
 
 Nominatim historically hasn't followed a particular coding style but we
-are in process of consolodating the style. The following rules apply:
+are in process of consolidating the style. The following rules apply:
 
  * Python code uses the official Python style
- * indention
+ * indentation
    * SQL use 2 spaces
    * all other file types use 4 spaces
    * [BSD style](https://en.wikipedia.org/wiki/Indent_style#Allman_style) for braces
@@ -79,22 +69,58 @@ are in process of consolodating the style. The following rules apply:
    * leave out space between a function name and bracket
      but add one between control statement(if, while, etc.) and bracket
 
-The coding style is enforced with PHPCS and can be tested with:
+The coding style is enforced with flake8. It can be tested with:
 
 ```
-  phpcs --report-width=120 --colors */**.php
+make lint
 ```
 
 ## Testing
 
-Before submitting a pull request make sure that the following tests pass:
+Before submitting a pull request make sure that the tests pass:
 
 ```
-  cd test/bdd
-  behave -DBUILDDIR=<builddir> db osm2pgsql
+  make tests
 ```
 
-```
-  cd test/php
-  phpunit ./
-```
+## Releases
+
+Nominatim follows semantic versioning. Major releases are done for large changes
+that require (or at least strongly recommend) a reimport of the databases.
+Minor releases can usually be applied to existing databases. Patch releases
+contain bug fixes only and are released from a separate branch where the
+relevant changes are cherry-picked from the master branch.
+
+Checklist for releases:
+
+* [ ] increase versions in
+  * `src/nominatim_api/version.py`
+  * `src/nominatim_db/version.py`
+* [ ] update `ChangeLog` (copy information from patch releases from release branch)
+* [ ] complete `docs/admin/Migration.md`
+* [ ] update EOL dates in `SECURITY.md`
+* [ ] commit and make sure CI tests pass
+* [ ] update OSMF production repo and release new version -post1 there
+* [ ] test migration
+  * download, build and import previous version
+  * migrate using master version
+  * run updates using master version
+* [ ] prepare tarball:
+  * `git clone https://github.com/osm-search/Nominatim` (switch to right branch!)
+  * `rm -r .git*`
+  * copy country data into `data/`
+  * add version to base directory and package
+* [ ] upload tarball to https://nominatim.org
+* [ ] prepare documentation
+  * check out new docs branch
+  * change git checkout instructions to tarball download instructions or adapt version on existing ones
+  * build documentation and copy to https://github.com/osm-search/nominatim-org-site
+  * add new version to history
+* [ ] check release tarball
+  * download tarball as per new documentation instructions
+  * compile and import Nominatim
+  * run `nominatim --version` to confirm correct version
+* [ ] tag new release and add a release on github.com
+* [ ] build pip packages and upload to pypi
+  * `make build`
+  * `twine upload dist/*`

COPYING

@@ -1,339 +1,232 @@
-                    GNU GENERAL PUBLIC LICENSE
-                       Version 2, June 1991
+GNU GENERAL PUBLIC LICENSE
+Version 3, 29 June 2007
 
- Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
+Copyright © 2007 Free Software Foundation, Inc. <https://fsf.org/>
 
-                            Preamble
+Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed.
 
-  The licenses for most software are designed to take away your
-freedom to share and change it.  By contrast, the GNU General Public
-License is intended to guarantee your freedom to share and change free
-software--to make sure the software is free for all its users.  This
-General Public License applies to most of the Free Software
-Foundation's software and to any other program whose authors commit to
-using it.  (Some other Free Software Foundation software is covered by
-the GNU Lesser General Public License instead.)  You can apply it to
-your programs, too.
+Preamble
 
-  When we speak of free software, we are referring to freedom, not
-price.  Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
-this service if you wish), that you receive source code or can get it
-if you want it, that you can change the software or use pieces of it
-in new free programs; and that you know you can do these things.
+The GNU General Public License is a free, copyleft license for software and other kinds of works.
 
-  To protect your rights, we need to make restrictions that forbid
-anyone to deny you these rights or to ask you to surrender the rights.
-These restrictions translate to certain responsibilities for you if you
-distribute copies of the software, or if you modify it.
+The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change all versions of a program--to make sure it remains free software for all its users. We, the Free Software Foundation, use the GNU General Public License for most of our software; it applies also to any other work released this way by its authors. You can apply it to your programs, too.
 
-  For example, if you distribute copies of such a program, whether
-gratis or for a fee, you must give the recipients all the rights that
-you have.  You must make sure that they, too, receive or can get the
-source code.  And you must show them these terms so they know their
-rights.
+When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for them if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs, and that you know you can do these things.
 
-  We protect your rights with two steps: (1) copyright the software, and
-(2) offer you this license which gives you legal permission to copy,
-distribute and/or modify the software.
+To protect your rights, we need to prevent others from denying you these rights or asking you to surrender the rights. Therefore, you have certain responsibilities if you distribute copies of the software, or if you modify it: responsibilities to respect the freedom of others.
 
-  Also, for each author's protection and ours, we want to make certain
-that everyone understands that there is no warranty for this free
-software.  If the software is modified by someone else and passed on, we
-want its recipients to know that what they have is not the original, so
-that any problems introduced by others will not reflect on the original
-authors' reputations.
+For example, if you distribute copies of such a program, whether gratis or for a fee, you must pass on to the recipients the same freedoms that you received. You must make sure that they, too, receive or can get the source code. And you must show them these terms so they know their rights.
 
-  Finally, any free program is threatened constantly by software
-patents.  We wish to avoid the danger that redistributors of a free
-program will individually obtain patent licenses, in effect making the
-program proprietary.  To prevent this, we have made it clear that any
-patent must be licensed for everyone's free use or not licensed at all.
+Developers that use the GNU GPL protect your rights with two steps: (1) assert copyright on the software, and (2) offer you this License giving you legal permission to copy, distribute and/or modify it.
 
-  The precise terms and conditions for copying, distribution and
-modification follow.
+For the developers' and authors' protection, the GPL clearly explains that there is no warranty for this free software. For both users' and authors' sake, the GPL requires that modified versions be marked as changed, so that their problems will not be attributed erroneously to authors of previous versions.
 
-                    GNU GENERAL PUBLIC LICENSE
-   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+Some devices are designed to deny users access to install or run modified versions of the software inside them, although the manufacturer can do so. This is fundamentally incompatible with the aim of protecting users' freedom to change the software. The systematic pattern of such abuse occurs in the area of products for individuals to use, which is precisely where it is most unacceptable. Therefore, we have designed this version of the GPL to prohibit the practice for those products. If such problems arise substantially in other domains, we stand ready to extend this provision to those domains in future versions of the GPL, as needed to protect the freedom of users.
 
-  0. This License applies to any program or other work which contains
-a notice placed by the copyright holder saying it may be distributed
-under the terms of this General Public License.  The "Program", below,
-refers to any such program or work, and a "work based on the Program"
-means either the Program or any derivative work under copyright law:
-that is to say, a work containing the Program or a portion of it,
-either verbatim or with modifications and/or translated into another
-language.  (Hereinafter, translation is included without limitation in
-the term "modification".)  Each licensee is addressed as "you".
+Finally, every program is threatened constantly by software patents. States should not allow patents to restrict development and use of software on general-purpose computers, but in those that do, we wish to avoid the special danger that patents applied to a free program could make it effectively proprietary. To prevent this, the GPL assures that patents cannot be used to render the program non-free.
 
-Activities other than copying, distribution and modification are not
-covered by this License; they are outside its scope.  The act of
-running the Program is not restricted, and the output from the Program
-is covered only if its contents constitute a work based on the
-Program (independent of having been made by running the Program).
-Whether that is true depends on what the Program does.
+The precise terms and conditions for copying, distribution and modification follow.
 
-  1. You may copy and distribute verbatim copies of the Program's
-source code as you receive it, in any medium, provided that you
-conspicuously and appropriately publish on each copy an appropriate
-copyright notice and disclaimer of warranty; keep intact all the
-notices that refer to this License and to the absence of any warranty;
-and give any other recipients of the Program a copy of this License
-along with the Program.
+TERMS AND CONDITIONS
 
-You may charge a fee for the physical act of transferring a copy, and
-you may at your option offer warranty protection in exchange for a fee.
+0. Definitions.
 
-  2. You may modify your copy or copies of the Program or any portion
-of it, thus forming a work based on the Program, and copy and
-distribute such modifications or work under the terms of Section 1
-above, provided that you also meet all of these conditions:
+“This License” refers to version 3 of the GNU General Public License.
 
-    a) You must cause the modified files to carry prominent notices
-    stating that you changed the files and the date of any change.
+“Copyright” also means copyright-like laws that apply to other kinds of works, such as semiconductor masks.
 
-    b) You must cause any work that you distribute or publish, that in
-    whole or in part contains or is derived from the Program or any
-    part thereof, to be licensed as a whole at no charge to all third
-    parties under the terms of this License.
+“The Program” refers to any copyrightable work licensed under this License. Each licensee is addressed as “you”. “Licensees” and “recipients” may be individuals or organizations.
 
-    c) If the modified program normally reads commands interactively
-    when run, you must cause it, when started running for such
-    interactive use in the most ordinary way, to print or display an
-    announcement including an appropriate copyright notice and a
-    notice that there is no warranty (or else, saying that you provide
-    a warranty) and that users may redistribute the program under
-    these conditions, and telling the user how to view a copy of this
-    License.  (Exception: if the Program itself is interactive but
-    does not normally print such an announcement, your work based on
-    the Program is not required to print an announcement.)
+To “modify” a work means to copy from or adapt all or part of the work in a fashion requiring copyright permission, other than the making of an exact copy. The resulting work is called a “modified version” of the earlier work or a work “based on” the earlier work.
 
-These requirements apply to the modified work as a whole.  If
-identifiable sections of that work are not derived from the Program,
-and can be reasonably considered independent and separate works in
-themselves, then this License, and its terms, do not apply to those
-sections when you distribute them as separate works.  But when you
-distribute the same sections as part of a whole which is a work based
-on the Program, the distribution of the whole must be on the terms of
-this License, whose permissions for other licensees extend to the
-entire whole, and thus to each and every part regardless of who wrote it.
+A “covered work” means either the unmodified Program or a work based on the Program.
 
-Thus, it is not the intent of this section to claim rights or contest
-your rights to work written entirely by you; rather, the intent is to
-exercise the right to control the distribution of derivative or
-collective works based on the Program.
+To “propagate” a work means to do anything with it that, without permission, would make you directly or secondarily liable for infringement under applicable copyright law, except executing it on a computer or modifying a private copy. Propagation includes copying, distribution (with or without modification), making available to the public, and in some countries other activities as well.
 
-In addition, mere aggregation of another work not based on the Program
-with the Program (or with a work based on the Program) on a volume of
-a storage or distribution medium does not bring the other work under
-the scope of this License.
+To “convey” a work means any kind of propagation that enables other parties to make or receive copies. Mere interaction with a user through a computer network, with no transfer of a copy, is not conveying.
 
-  3. You may copy and distribute the Program (or a work based on it,
-under Section 2) in object code or executable form under the terms of
-Sections 1 and 2 above provided that you also do one of the following:
+An interactive user interface displays “Appropriate Legal Notices” to the extent that it includes a convenient and prominently visible feature that (1) displays an appropriate copyright notice, and (2) tells the user that there is no warranty for the work (except to the extent that warranties are provided), that licensees may convey the work under this License, and how to view a copy of this License. If the interface presents a list of user commands or options, such as a menu, a prominent item in the list meets this criterion.
 
-    a) Accompany it with the complete corresponding machine-readable
-    source code, which must be distributed under the terms of Sections
-    1 and 2 above on a medium customarily used for software interchange; or,
+1. Source Code.
+The “source code” for a work means the preferred form of the work for making modifications to it. “Object code” means any non-source form of a work.
 
-    b) Accompany it with a written offer, valid for at least three
-    years, to give any third party, for a charge no more than your
-    cost of physically performing source distribution, a complete
-    machine-readable copy of the corresponding source code, to be
-    distributed under the terms of Sections 1 and 2 above on a medium
-    customarily used for software interchange; or,
+A “Standard Interface” means an interface that either is an official standard defined by a recognized standards body, or, in the case of interfaces specified for a particular programming language, one that is widely used among developers working in that language.
 
-    c) Accompany it with the information you received as to the offer
-    to distribute corresponding source code.  (This alternative is
-    allowed only for noncommercial distribution and only if you
-    received the program in object code or executable form with such
-    an offer, in accord with Subsection b above.)
+The “System Libraries” of an executable work include anything, other than the work as a whole, that (a) is included in the normal form of packaging a Major Component, but which is not part of that Major Component, and (b) serves only to enable use of the work with that Major Component, or to implement a Standard Interface for which an implementation is available to the public in source code form. A “Major Component”, in this context, means a major essential component (kernel, window system, and so on) of the specific operating system (if any) on which the executable work runs, or a compiler used to produce the work, or an object code interpreter used to run it.
 
-The source code for a work means the preferred form of the work for
-making modifications to it.  For an executable work, complete source
-code means all the source code for all modules it contains, plus any
-associated interface definition files, plus the scripts used to
-control compilation and installation of the executable.  However, as a
-special exception, the source code distributed need not include
-anything that is normally distributed (in either source or binary
-form) with the major components (compiler, kernel, and so on) of the
-operating system on which the executable runs, unless that component
-itself accompanies the executable.
+The “Corresponding Source” for a work in object code form means all the source code needed to generate, install, and (for an executable work) run the object code and to modify the work, including scripts to control those activities. However, it does not include the work's System Libraries, or general-purpose tools or generally available free programs which are used unmodified in performing those activities but which are not part of the work. For example, Corresponding Source includes interface definition files associated with source files for the work, and the source code for shared libraries and dynamically linked subprograms that the work is specifically designed to require, such as by intimate data communication or control flow between those subprograms and other parts of the work.
 
-If distribution of executable or object code is made by offering
-access to copy from a designated place, then offering equivalent
-access to copy the source code from the same place counts as
-distribution of the source code, even though third parties are not
-compelled to copy the source along with the object code.
+The Corresponding Source need not include anything that users can regenerate automatically from other parts of the Corresponding Source.
 
-  4. You may not copy, modify, sublicense, or distribute the Program
-except as expressly provided under this License.  Any attempt
-otherwise to copy, modify, sublicense or distribute the Program is
-void, and will automatically terminate your rights under this License.
-However, parties who have received copies, or rights, from you under
-this License will not have their licenses terminated so long as such
-parties remain in full compliance.
+The Corresponding Source for a work in source code form is that same work.
 
-  5. You are not required to accept this License, since you have not
-signed it.  However, nothing else grants you permission to modify or
-distribute the Program or its derivative works.  These actions are
-prohibited by law if you do not accept this License.  Therefore, by
-modifying or distributing the Program (or any work based on the
-Program), you indicate your acceptance of this License to do so, and
-all its terms and conditions for copying, distributing or modifying
-the Program or works based on it.
+2. Basic Permissions.
+All rights granted under this License are granted for the term of copyright on the Program, and are irrevocable provided the stated conditions are met. This License explicitly affirms your unlimited permission to run the unmodified Program. The output from running a covered work is covered by this License only if the output, given its content, constitutes a covered work. This License acknowledges your rights of fair use or other equivalent, as provided by copyright law.
 
-  6. Each time you redistribute the Program (or any work based on the
-Program), the recipient automatically receives a license from the
-original licensor to copy, distribute or modify the Program subject to
-these terms and conditions.  You may not impose any further
-restrictions on the recipients' exercise of the rights granted herein.
-You are not responsible for enforcing compliance by third parties to
-this License.
+You may make, run and propagate covered works that you do not convey, without conditions so long as your license otherwise remains in force. You may convey covered works to others for the sole purpose of having them make modifications exclusively for you, or provide you with facilities for running those works, provided that you comply with the terms of this License in conveying all material for which you do not control copyright. Those thus making or running the covered works for you must do so exclusively on your behalf, under your direction and control, on terms that prohibit them from making any copies of your copyrighted material outside their relationship with you.
 
-  7. If, as a consequence of a court judgment or allegation of patent
-infringement or for any other reason (not limited to patent issues),
-conditions are imposed on you (whether by court order, agreement or
-otherwise) that contradict the conditions of this License, they do not
-excuse you from the conditions of this License.  If you cannot
-distribute so as to satisfy simultaneously your obligations under this
-License and any other pertinent obligations, then as a consequence you
-may not distribute the Program at all.  For example, if a patent
-license would not permit royalty-free redistribution of the Program by
-all those who receive copies directly or indirectly through you, then
-the only way you could satisfy both it and this License would be to
-refrain entirely from distribution of the Program.
+Conveying under any other circumstances is permitted solely under the conditions stated below. Sublicensing is not allowed; section 10 makes it unnecessary.
 
-If any portion of this section is held invalid or unenforceable under
-any particular circumstance, the balance of the section is intended to
-apply and the section as a whole is intended to apply in other
-circumstances.
+3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+No covered work shall be deemed part of an effective technological measure under any applicable law fulfilling obligations under article 11 of the WIPO copyright treaty adopted on 20 December 1996, or similar laws prohibiting or restricting circumvention of such measures.
 
-It is not the purpose of this section to induce you to infringe any
-patents or other property right claims or to contest validity of any
-such claims; this section has the sole purpose of protecting the
-integrity of the free software distribution system, which is
-implemented by public license practices.  Many people have made
-generous contributions to the wide range of software distributed
-through that system in reliance on consistent application of that
-system; it is up to the author/donor to decide if he or she is willing
-to distribute software through any other system and a licensee cannot
-impose that choice.
+When you convey a covered work, you waive any legal power to forbid circumvention of technological measures to the extent such circumvention is effected by exercising rights under this License with respect to the covered work, and you disclaim any intention to limit operation or modification of the work as a means of enforcing, against the work's users, your or third parties' legal rights to forbid circumvention of technological measures.
 
-This section is intended to make thoroughly clear what is believed to
-be a consequence of the rest of this License.
+4. Conveying Verbatim Copies.
+You may convey verbatim copies of the Program's source code as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy an appropriate copyright notice; keep intact all notices stating that this License and any non-permissive terms added in accord with section 7 apply to the code; keep intact all notices of the absence of any warranty; and give all recipients a copy of this License along with the Program.
 
-  8. If the distribution and/or use of the Program is restricted in
-certain countries either by patents or by copyrighted interfaces, the
-original copyright holder who places the Program under this License
-may add an explicit geographical distribution limitation excluding
-those countries, so that distribution is permitted only in or among
-countries not thus excluded.  In such case, this License incorporates
-the limitation as if written in the body of this License.
+You may charge any price or no price for each copy that you convey, and you may offer support or warranty protection for a fee.
 
-  9. The Free Software Foundation may publish revised and/or new versions
-of the General Public License from time to time.  Such new versions will
-be similar in spirit to the present version, but may differ in detail to
-address new problems or concerns.
+5. Conveying Modified Source Versions.
+You may convey a work based on the Program, or the modifications to produce it from the Program, in the form of source code under the terms of section 4, provided that you also meet all of these conditions:
 
-Each version is given a distinguishing version number.  If the Program
-specifies a version number of this License which applies to it and "any
-later version", you have the option of following the terms and conditions
-either of that version or of any later version published by the Free
-Software Foundation.  If the Program does not specify a version number of
-this License, you may choose any version ever published by the Free Software
-Foundation.
+     a) The work must carry prominent notices stating that you modified it, and giving a relevant date.
 
-  10. If you wish to incorporate parts of the Program into other free
-programs whose distribution conditions are different, write to the author
-to ask for permission.  For software which is copyrighted by the Free
-Software Foundation, write to the Free Software Foundation; we sometimes
-make exceptions for this.  Our decision will be guided by the two goals
-of preserving the free status of all derivatives of our free software and
-of promoting the sharing and reuse of software generally.
+     b) The work must carry prominent notices stating that it is released under this License and any conditions added under section 7. This requirement modifies the requirement in section 4 to “keep intact all notices”.
 
-                            NO WARRANTY
+     c) You must license the entire work, as a whole, under this License to anyone who comes into possession of a copy. This License will therefore apply, along with any applicable section 7 additional terms, to the whole of the work, and all its parts, regardless of how they are packaged. This License gives no permission to license the work in any other way, but it does not invalidate such permission if you have separately received it.
 
-  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
-FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
-OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
-PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
-OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
-MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
-TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
-PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
-REPAIR OR CORRECTION.
+     d) If the work has interactive user interfaces, each must display Appropriate Legal Notices; however, if the Program has interactive interfaces that do not display Appropriate Legal Notices, your work need not make them do so.
 
-  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
-REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
-OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
-TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
-YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
-PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
-POSSIBILITY OF SUCH DAMAGES.
+A compilation of a covered work with other separate and independent works, which are not by their nature extensions of the covered work, and which are not combined with it such as to form a larger program, in or on a volume of a storage or distribution medium, is called an “aggregate” if the compilation and its resulting copyright are not used to limit the access or legal rights of the compilation's users beyond what the individual works permit. Inclusion of a covered work in an aggregate does not cause this License to apply to the other parts of the aggregate.
 
-                     END OF TERMS AND CONDITIONS
+6. Conveying Non-Source Forms.
+You may convey a covered work in object code form under the terms of sections 4 and 5, provided that you also convey the machine-readable Corresponding Source under the terms of this License, in one of these ways:
 
-            How to Apply These Terms to Your New Programs
+     a) Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by the Corresponding Source fixed on a durable physical medium customarily used for software interchange.
 
-  If you develop a new program, and you want it to be of the greatest
-possible use to the public, the best way to achieve this is to make it
-free software which everyone can redistribute and change under these terms.
+     b) Convey the object code in, or embodied in, a physical product (including a physical distribution medium), accompanied by a written offer, valid for at least three years and valid for as long as you offer spare parts or customer support for that product model, to give anyone who possesses the object code either (1) a copy of the Corresponding Source for all the software in the product that is covered by this License, on a durable physical medium customarily used for software interchange, for a price no more than your reasonable cost of physically performing this conveying of source, or (2) access to copy the Corresponding Source from a network server at no charge.
 
-  To do so, attach the following notices to the program.  It is safest
-to attach them to the start of each source file to most effectively
-convey the exclusion of warranty; and each file should have at least
-the "copyright" line and a pointer to where the full notice is found.
+     c) Convey individual copies of the object code with a copy of the written offer to provide the Corresponding Source. This alternative is allowed only occasionally and noncommercially, and only if you received the object code with such an offer, in accord with subsection 6b.
 
-    <one line to give the program's name and a brief idea of what it does.>
-    Copyright (C) <year>  <name of author>
+     d) Convey the object code by offering access from a designated place (gratis or for a charge), and offer equivalent access to the Corresponding Source in the same way through the same place at no further charge. You need not require recipients to copy the Corresponding Source along with the object code. If the place to copy the object code is a network server, the Corresponding Source may be on a different server (operated by you or a third party) that supports equivalent copying facilities, provided you maintain clear directions next to the object code saying where to find the Corresponding Source. Regardless of what server hosts the Corresponding Source, you remain obligated to ensure that it is available for as long as needed to satisfy these requirements.
 
-    This program is free software; you can redistribute it and/or modify
-    it under the terms of the GNU General Public License as published by
-    the Free Software Foundation; either version 2 of the License, or
-    (at your option) any later version.
+     e) Convey the object code using peer-to-peer transmission, provided you inform other peers where the object code and Corresponding Source of the work are being offered to the general public at no charge under subsection 6d.
 
-    This program is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    GNU General Public License for more details.
+A separable portion of the object code, whose source code is excluded from the Corresponding Source as a System Library, need not be included in conveying the object code work.
 
-    You should have received a copy of the GNU General Public License along
-    with this program; if not, write to the Free Software Foundation, Inc.,
-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+A “User Product” is either (1) a “consumer product”, which means any tangible personal property which is normally used for personal, family, or household purposes, or (2) anything designed or sold for incorporation into a dwelling. In determining whether a product is a consumer product, doubtful cases shall be resolved in favor of coverage. For a particular product received by a particular user, “normally used” refers to a typical or common use of that class of product, regardless of the status of the particular user or of the way in which the particular user actually uses, or expects or is expected to use, the product. A product is a consumer product regardless of whether the product has substantial commercial, industrial or non-consumer uses, unless such uses represent the only significant mode of use of the product.
+
+“Installation Information” for a User Product means any methods, procedures, authorization keys, or other information required to install and execute modified versions of a covered work in that User Product from a modified version of its Corresponding Source. The information must suffice to ensure that the continued functioning of the modified object code is in no case prevented or interfered with solely because modification has been made.
+
+If you convey an object code work under this section in, or with, or specifically for use in, a User Product, and the conveying occurs as part of a transaction in which the right of possession and use of the User Product is transferred to the recipient in perpetuity or for a fixed term (regardless of how the transaction is characterized), the Corresponding Source conveyed under this section must be accompanied by the Installation Information. But this requirement does not apply if neither you nor any third party retains the ability to install modified object code on the User Product (for example, the work has been installed in ROM).
+
+The requirement to provide Installation Information does not include a requirement to continue to provide support service, warranty, or updates for a work that has been modified or installed by the recipient, or for the User Product in which it has been modified or installed. Access to a network may be denied when the modification itself materially and adversely affects the operation of the network or violates the rules and protocols for communication across the network.
+
+Corresponding Source conveyed, and Installation Information provided, in accord with this section must be in a format that is publicly documented (and with an implementation available to the public in source code form), and must require no special password or key for unpacking, reading or copying.
+
+7. Additional Terms.
+“Additional permissions” are terms that supplement the terms of this License by making exceptions from one or more of its conditions. Additional permissions that are applicable to the entire Program shall be treated as though they were included in this License, to the extent that they are valid under applicable law. If additional permissions apply only to part of the Program, that part may be used separately under those permissions, but the entire Program remains governed by this License without regard to the additional permissions.
+
+When you convey a copy of a covered work, you may at your option remove any additional permissions from that copy, or from any part of it. (Additional permissions may be written to require their own removal in certain cases when you modify the work.) You may place additional permissions on material, added by you to a covered work, for which you have or can give appropriate copyright permission.
+
+Notwithstanding any other provision of this License, for material you add to a covered work, you may (if authorized by the copyright holders of that material) supplement the terms of this License with terms:
+
+     a) Disclaiming warranty or limiting liability differently from the terms of sections 15 and 16 of this License; or
+
+     b) Requiring preservation of specified reasonable legal notices or author attributions in that material or in the Appropriate Legal Notices displayed by works containing it; or
+
+     c) Prohibiting misrepresentation of the origin of that material, or requiring that modified versions of such material be marked in reasonable ways as different from the original version; or
+
+     d) Limiting the use for publicity purposes of names of licensors or authors of the material; or
+
+     e) Declining to grant rights under trademark law for use of some trade names, trademarks, or service marks; or
+
+     f) Requiring indemnification of licensors and authors of that material by anyone who conveys the material (or modified versions of it) with contractual assumptions of liability to the recipient, for any liability that these contractual assumptions directly impose on those licensors and authors.
+
+All other non-permissive additional terms are considered “further restrictions” within the meaning of section 10. If the Program as you received it, or any part of it, contains a notice stating that it is governed by this License along with a term that is a further restriction, you may remove that term. If a license document contains a further restriction but permits relicensing or conveying under this License, you may add to a covered work material governed by the terms of that license document, provided that the further restriction does not survive such relicensing or conveying.
+
+If you add terms to a covered work in accord with this section, you must place, in the relevant source files, a statement of the additional terms that apply to those files, or a notice indicating where to find the applicable terms.
+
+Additional terms, permissive or non-permissive, may be stated in the form of a separately written license, or stated as exceptions; the above requirements apply either way.
+
+8. Termination.
+You may not propagate or modify a covered work except as expressly provided under this License. Any attempt otherwise to propagate or modify it is void, and will automatically terminate your rights under this License (including any patent licenses granted under the third paragraph of section 11).
+
+However, if you cease all violation of this License, then your license from a particular copyright holder is reinstated (a) provisionally, unless and until the copyright holder explicitly and finally terminates your license, and (b) permanently, if the copyright holder fails to notify you of the violation by some reasonable means prior to 60 days after the cessation.
+
+Moreover, your license from a particular copyright holder is reinstated permanently if the copyright holder notifies you of the violation by some reasonable means, this is the first time you have received notice of violation of this License (for any work) from that copyright holder, and you cure the violation prior to 30 days after your receipt of the notice.
+
+Termination of your rights under this section does not terminate the licenses of parties who have received copies or rights from you under this License. If your rights have been terminated and not permanently reinstated, you do not qualify to receive new licenses for the same material under section 10.
+
+9. Acceptance Not Required for Having Copies.
+You are not required to accept this License in order to receive or run a copy of the Program. Ancillary propagation of a covered work occurring solely as a consequence of using peer-to-peer transmission to receive a copy likewise does not require acceptance. However, nothing other than this License grants you permission to propagate or modify any covered work. These actions infringe copyright if you do not accept this License. Therefore, by modifying or propagating a covered work, you indicate your acceptance of this License to do so.
+
+10. Automatic Licensing of Downstream Recipients.
+Each time you convey a covered work, the recipient automatically receives a license from the original licensors, to run, modify and propagate that work, subject to this License. You are not responsible for enforcing compliance by third parties with this License.
+
+An “entity transaction” is a transaction transferring control of an organization, or substantially all assets of one, or subdividing an organization, or merging organizations. If propagation of a covered work results from an entity transaction, each party to that transaction who receives a copy of the work also receives whatever licenses to the work the party's predecessor in interest had or could give under the previous paragraph, plus a right to possession of the Corresponding Source of the work from the predecessor in interest, if the predecessor has it or can get it with reasonable efforts.
+
+You may not impose any further restrictions on the exercise of the rights granted or affirmed under this License. For example, you may not impose a license fee, royalty, or other charge for exercise of rights granted under this License, and you may not initiate litigation (including a cross-claim or counterclaim in a lawsuit) alleging that any patent claim is infringed by making, using, selling, offering for sale, or importing the Program or any portion of it.
+
+11. Patents.
+A “contributor” is a copyright holder who authorizes use under this License of the Program or a work on which the Program is based. The work thus licensed is called the contributor's “contributor version”.
+
+A contributor's “essential patent claims” are all patent claims owned or controlled by the contributor, whether already acquired or hereafter acquired, that would be infringed by some manner, permitted by this License, of making, using, or selling its contributor version, but do not include claims that would be infringed only as a consequence of further modification of the contributor version. For purposes of this definition, “control” includes the right to grant patent sublicenses in a manner consistent with the requirements of this License.
+
+Each contributor grants you a non-exclusive, worldwide, royalty-free patent license under the contributor's essential patent claims, to make, use, sell, offer for sale, import and otherwise run, modify and propagate the contents of its contributor version.
+
+In the following three paragraphs, a “patent license” is any express agreement or commitment, however denominated, not to enforce a patent (such as an express permission to practice a patent or covenant not to sue for patent infringement). To “grant” such a patent license to a party means to make such an agreement or commitment not to enforce a patent against the party.
+
+If you convey a covered work, knowingly relying on a patent license, and the Corresponding Source of the work is not available for anyone to copy, free of charge and under the terms of this License, through a publicly available network server or other readily accessible means, then you must either (1) cause the Corresponding Source to be so available, or (2) arrange to deprive yourself of the benefit of the patent license for this particular work, or (3) arrange, in a manner consistent with the requirements of this License, to extend the patent license to downstream recipients. “Knowingly relying” means you have actual knowledge that, but for the patent license, your conveying the covered work in a country, or your recipient's use of the covered work in a country, would infringe one or more identifiable patents in that country that you have reason to believe are valid.
+
+If, pursuant to or in connection with a single transaction or arrangement, you convey, or propagate by procuring conveyance of, a covered work, and grant a patent license to some of the parties receiving the covered work authorizing them to use, propagate, modify or convey a specific copy of the covered work, then the patent license you grant is automatically extended to all recipients of the covered work and works based on it.
+
+A patent license is “discriminatory” if it does not include within the scope of its coverage, prohibits the exercise of, or is conditioned on the non-exercise of one or more of the rights that are specifically granted under this License. You may not convey a covered work if you are a party to an arrangement with a third party that is in the business of distributing software, under which you make payment to the third party based on the extent of your activity of conveying the work, and under which the third party grants, to any of the parties who would receive the covered work from you, a discriminatory patent license (a) in connection with copies of the covered work conveyed by you (or copies made from those copies), or (b) primarily for and in connection with specific products or compilations that contain the covered work, unless you entered into that arrangement, or that patent license was granted, prior to 28 March 2007.
+
+Nothing in this License shall be construed as excluding or limiting any implied license or other defenses to infringement that may otherwise be available to you under applicable patent law.
+
+12. No Surrender of Others' Freedom.
+If conditions are imposed on you (whether by court order, agreement or otherwise) that contradict the conditions of this License, they do not excuse you from the conditions of this License. If you cannot convey a covered work so as to satisfy simultaneously your obligations under this License and any other pertinent obligations, then as a consequence you may not convey it at all. For example, if you agree to terms that obligate you to collect a royalty for further conveying from those to whom you convey the Program, the only way you could satisfy both those terms and this License would be to refrain entirely from conveying the Program.
+
+13. Use with the GNU Affero General Public License.
+Notwithstanding any other provision of this License, you have permission to link or combine any covered work with a work licensed under version 3 of the GNU Affero General Public License into a single combined work, and to convey the resulting work. The terms of this License will continue to apply to the part which is the covered work, but the special requirements of the GNU Affero General Public License, section 13, concerning interaction through a network will apply to the combination as such.
+
+14. Revised Versions of this License.
+The Free Software Foundation may publish revised and/or new versions of the GNU General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number. If the Program specifies that a certain numbered version of the GNU General Public License “or any later version” applies to it, you have the option of following the terms and conditions either of that numbered version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of the GNU General Public License, you may choose any version ever published by the Free Software Foundation.
+
+If the Program specifies that a proxy can decide which future versions of the GNU General Public License can be used, that proxy's public statement of acceptance of a version permanently authorizes you to choose that version for the Program.
+
+Later license versions may give you additional or different permissions. However, no additional obligations are imposed on any author or copyright holder as a result of your choosing to follow a later version.
+
+15. Disclaimer of Warranty.
+THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+16. Limitation of Liability.
+IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+17. Interpretation of Sections 15 and 16.
+If the disclaimer of warranty and limitation of liability provided above cannot be given local legal effect according to their terms, reviewing courts shall apply local law that most closely approximates an absolute waiver of all civil liability in connection with the Program, unless a warranty or assumption of liability accompanies a copy of the Program in return for a fee.
+
+END OF TERMS AND CONDITIONS
+
+How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms.
+
+To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively state the exclusion of warranty; and each file should have at least the “copyright” line and a pointer to where the full notice is found.
+
+     <one line to give the program's name and a brief idea of what it does.>
+     Copyright (C) <year>  <name of author>
+
+     This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+
+     This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+
+     You should have received a copy of the GNU General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 Also add information on how to contact you by electronic and paper mail.
 
-If the program is interactive, make it output a short notice like this
-when it starts in an interactive mode:
+If the program does terminal interaction, make it output a short notice like this when it starts in an interactive mode:
 
-    Gnomovision version 69, Copyright (C) year name of author
-    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
-    This is free software, and you are welcome to redistribute it
-    under certain conditions; type `show c' for details.
+     <program>  Copyright (C) <year>  <name of author>
+     This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+     This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details.
 
-The hypothetical commands `show w' and `show c' should show the appropriate
-parts of the General Public License.  Of course, the commands you use may
-be called something other than `show w' and `show c'; they could even be
-mouse-clicks or menu items--whatever suits your program.
+The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, your program's commands might be different; for a GUI interface, you would use an “about box”.
 
-You should also get your employer (if you work as a programmer) or your
-school, if any, to sign a "copyright disclaimer" for the program, if
-necessary.  Here is a sample; alter the names:
+You should also get your employer (if you work as a programmer) or school, if any, to sign a “copyright disclaimer” for the program, if necessary. For more information on this, and how to apply and follow the GNU GPL, see <https://www.gnu.org/licenses/>.
 
-  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
-  `Gnomovision' (which makes passes at compilers) written by James Hacker.
-
-  <signature of Ty Coon>, 1 April 1989
-  Ty Coon, President of Vice
-
-This General Public License does not permit incorporating your program into
-proprietary programs.  If your program is a subroutine library, you may
-consider it more useful to permit linking proprietary applications with the
-library.  If this is what you want to do, use the GNU Lesser General
-Public License instead of this License.
+The GNU General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Lesser General Public License instead of this License. But first, please read <https://www.gnu.org/philosophy/why-not-lgpl.html>.

ChangeLog

@@ -1,4 +1,544 @@
-3.0
+5.2.0
+ * increase minimum required Python to 3.9
+ * index and output entrances of buildings and areas (thanks @emlove)
+ * name tags used for creating display names are now configurable
+   (thanks @astridx)
+ * new pattern-replacement query preprocessor (thanks @TuringVerified)
+ * special phrases can now be filtered by presence of tags (thanks @anqixxx)
+ * lua import style now always includes tags required by Nominatim
+ * improved query time reporting and logging
+ * improve word matching for languages with no word boundaries
+ * POIs with addresses inherited from surrounding building are no
+   longer returned in the address layer
+ * avoid creating a directory for the tokenizer when not needed
+ * replace behave with pytest-bdd for BDD testing
+ * refactoring and performance improvements to query parsing
+ * various smaller updates to styles
+ * remove English as default language for South Korea
+ * remove Japanese word variants
+ * updated country names for Norwegians (thanks @Johannes-Andersen)
+ * remove support for deprecated osm2pgsql gazetteer style
+ * fix updating of importances (also needs to update search_name table)
+ * fix query for deletable endpoint to use index again
+ * fix reindexing of contained places when a boundary is deleted and reinstated
+ * fix difference computation error when updating postcodes
+ * bracket handling sanitizer no longer strips bracket terms in the middle of
+   name
+ * reduce precision of stored coordinates to 7-digits everywhere
+ * avoid ST_Relate as it seems buggy on some systems
+ * remove setting for logging queries in DB, no longer functional
+ * postcode updates no longer require a project directory (needed for tests)
+ * refactor locale handling code (thanks @anqixxx)
+ * code updates for newer Python (thanks @emmanuel-ferdman)
+ * better test coverage (thanks @asharmalik19)
+ * various fixes and improvements to documentation
+   (thanks @anqixxx, @dave-meyer, @hasandiwan)
+
+5.1.0
+ * replace datrie with simple internal trie implementation
+ * add pattern-based postcode parser for queries,
+   postcodes no longer need to be present in OSM to be found
+ * take variants into account when computing token similarity
+ * add extratags output to geocodejson format
+ * fix default layer setting used for structured queries
+ * update abbreviation lists for Russian and English
+   (thanks @shoorick, @IvanShift, @mhsrn21)
+ * fix variant generation for Norwegian
+ * fix normalization around space-like characters
+ * improve postcode search and handling of postcodes in queries
+ * reorganise internal query structure and get rid of slow enums
+ * enable code linting for tests
+ * various code moderinsations in test code (thanks @eumiro)
+ * remove setting osm2pgsql location via config.lib_dir
+ * make SQL functions parallel save as far as possible (thanks @otbutz)
+ * various fixes and improvements to documentation (thanks @TuringVerified)
+
+5.0.0
+ * increase required versions for PostgreSQL (12+), PostGIS (3.0+)
+ * remove installation via cmake and debundle osm2pgsql
+ * remove deprecated PHP frontend
+ * remove deprecated legacy tokenizer
+ * add configurable pre-processing of queries
+ * add query pre-processor to split up Japanese addresses
+ * rewrite of osm2pgsql style implementation
+   (also adds support for osm2pgsql-themepark)
+ * reduce the number of SQL queries needed to complete a 'lookup' call
+ * improve computation of centroid for lines with only two points
+ * improve bbox output for postcode areas
+ * improve result order by returning the largest object when other things are
+   equal
+ * add fallback for reverse geocoding to default country tables
+ * exclude postcode areas from reverse geocoding
+ * disable search endpoint when database is reverse-only (regression)
+ * minor performance improvements to area split algorithm
+ * switch table and index creation to use autocommit mode to avoid deadlocks
+ * drop overly long ways during import
+ * restrict automatic migrations to versions 4.3+
+ * switch linting from pylint to flake8
+ * switch tests to use a wikimedia test file in the new CSV style
+ * various fixes and improvements to documentation
+
+4.5.0
+ * allow building Nominatim as a pip package
+ * make osm2pgsql building optional
+ * switch importer to psycopg3
+ * allow output format of web search to be customized in self-installations
+ * look up potential postcode areas for postcode results
+ * add word usage statistics for address terms
+ * implement more light-weight CSV format for wiki importance tables
+ * rewrite SQL for place search to use window functions
+ * increase search radius when filtering by postcode
+ * prefer POI points over POI areas
+ * reintroduce full terms for address terms in search_name table
+ * reindex postcodes when their parent is deleted
+ * indexing: precompute counts of affected rows
+ * ensure consistent country assignments for overlapping countries
+ * make Nominatim[Async]API context manager to ensure proper calling of
+   close()
+ * make usage of project dir optional for library
+ * drop interpolations when no parent can be found
+ * style tweaks to reflect OSM usage (man_made, highway and others)
+ * deprecation of: bundled osm2pgsql, legacy tokenizer, PHP frontend
+ * make documentation buildable without CMake
+ * various fixes and improvements to documentation
+
+4.4.1
+ * fix geocodejson output: admin level output should only print boundaries
+ * updating: restrict invalidation of child objects on large street features
+ * restrict valid interpolation house numbers to 0-999999
+ * fix import error when SQLAlchemy 1.4 and psycopg3 are installed
+ * various typo fixes in the documentation
+
+4.4.0
+ * add export to SQLite database and SQLite support for the frontend
+ * switch to Python frontend as the default frontend
+ * update to osm2pgsql 1.11.0
+ * add support for new osm2pgsql middle table format
+ * simplify geometry for large polygon objects not used in addresses
+ * various performance tweaks for search in Python frontend
+ * fix regression in search with categories where it was confused with near
+   search
+ * partially roll back use of SQLAlchemy lambda statements due to bugs
+   in SQLAlchemy
+ * fix handling of timezones for timestamps from the database
+ * fix handling of full address searches in connection with a viewbox
+ * fix postcode computation of highway areas
+ * fix handling of timeout errors for Python <= 3.10
+ * fix address computation for postcode areas
+ * fix variable shadowing in osm2pgsql flex script, causing bugs with LuaJIT
+ * make sure extratags are always null when empty
+ * reduce importance of places without wikipedia reference
+ * improve performance of word count computations
+ * drop support for wikipedia tags with full URLs
+ * replace get_addressdata() SQL implementation with a Python function
+ * improve display name for non-address features
+ * fix postcode validation for postcodes with country code
+   (thanks @pawel-wroniszewski)
+ * add possibility to run imports without superuser database rights
+   (thanks @robbe-haesendonck)
+ * new CLI command for cleaning deleted relations (thanks @lujoh)
+ * add check for database version in the CLI check command
+ * updates to import styles ignoring more unused objects
+ * various typo fixes (thanks @kumarUjjawal)
+
+4.3.2
+ * fix potential SQL injection issue for 'nominatim admin --collect-os-info'
+ * PHP frontend: fix on-the-fly lookup of postcode areas near boundaries
+ * Python frontend: improve handling of viewbox
+ * Python frontend: correct deployment instructions
+
+4.3.1
+ * reintroduce result rematching
+ * improve search of multi-part names
+ * fix accidentally switched meaning of --reverse-only and --search-only in
+   warm command
+
+4.3.0
+ * fix failing importance recalculation command
+ * fix merging of linked names into unnamed boundaries
+ * fix a number of corner cases with interpolation splitting resulting in
+   invalid geometries
+ * fix failure in website generation when password contains curly brackets
+ * fix broken use of ST_Project in PostGIS 3.4
+ * new NOMINATIM_SEARCH_WITHIN_COUNTRIES setting to restrict reverse lookups
+   to known countries (thanks @alfmarcua)
+ * allow negative OSM IDs (thanks @alfmarcua)
+ * disallow import of Tiger data in a frozen DB
+ * avoid UPDATE to change settings to be compatible with r/o DBs (thanks @t-tomek)
+ * update bundled osm2pgsql to 1.9.2
+ * reorganise osm2pgsql flex style and make it the default
+ * exclude names ending in :wikipedia from indexing
+ * no longer accept comma as a list separator in name tags
+ * process forward dependencies on update to catch updates in geometries
+   of ways and relations
+ * fix handling of isolated silent letters during transliteration
+ * no longer assign postcodes to large linear features like rivers
+ * introduce nominatim.paths module for finding data and libraries
+ * documentation layout changed to material theme
+ * new documentation section for library
+ * various smaller fixes to existing documentation
+   (thanks @woodpeck, @bloom256, @biswajit-k)
+ * updates to vagrant install scripts, drop support for Ubuntu 18
+   (thanks @n-timofeev)
+ * removed obsolete configuration variables from env.defaults
+ * add script for generating a taginfo description (thanks @biswajit-k)
+ * modernize Python code around BDD test and add testing of Python frontend
+ * lots of new BDD tests for API output
+
+4.2.3
+
+ * fix deletion handling for 'nominatim add-data'
+ * adapt place_force_delete() to new deletion handling
+ * flex style: avoid dropping of postcode areas
+ * fix update errors on address interpolation handling
+
+4.2.2
+
+ * extend flex-style library to fully support all default styles
+ * fix handling of Hebrew aleph
+ * do not assign postcodes to rivers
+ * fix string matching in PHP code
+ * update osm2pgsql (various updates to flex)
+ * fix slow query when deleting places on update
+ * fix CLI details query
+ * fix recalculation of importance values
+ * fix polygon simplification in reverse results
+ * add class/type information to reverse geocodejson result
+ * minor improvements to default tokenizer configuration
+ * various smaller fixes to documentation
+
+4.2.1
+
+ * fix XSS vulnerability in debug view
+
+4.2.0
+
+ * add experimental support for osm2pgsql flex style
+ * introduce secondary importance value to be retrieved from a raster data file
+   (currently still unused, to replace address importance, thanks to @tareqpi)
+ * add new report tool `nominatim admin --collect-os-info`
+   (thanks @micahcochran, @tareqpi)
+ * reorganise index to improve lookup performance and size
+ * run index creation after import in parallel
+ * run ANALYZE more selectively to speed up continuation of indexing
+ * fix crash on update when addr:interpolation receives an illegal value
+ * fix minimum number of retrieved results to be at least 10
+ * fix search for combinations of special term + name (e.g Hotel Bellevue)
+ * do not return interpolations without a parent street on reverse search
+ * improve invalidation of linked places on updates
+ * fix address parsing for interpolation lines
+ * make sure socket timeouts are respected during replication
+   (working around a bug in some versions of pyosmium)
+ * update bundled osm2pgsql to 1.7.1
+ * add support for PostgreSQL 15
+ * typing fixes to work with latest type annotations from typeshed
+ * smaller improvements to documentation (thanks to @mausch)
+
+4.1.1
+
+ * fix XSS vulnerability in debug view
+
+4.1.0
+
+ * switch to ICU tokenizer as default
+ * add housenumber normalization and support optional spaces during search
+ * add postcode format checking and support optional spaces during search
+ * add function for cleaning housenumbers in word table
+ * add updates/deletion of country names imported from OSM
+ * linked places no longer overwrite names from a place permanently
+ * move default country name configuration into yaml file (thanks @tareqpi)
+ * more compact layout for interpolation and TIGER tables
+ * introduce mutations to ICU tokenizer (used for German umlauts)
+ * support reinitializing a full project directory with refresh --website
+ * fix various issues with linked places on updates
+ * add support for external sanitizers and token analyzers
+ * add CLI commands for forced indexing
+ * add CLI command for version report
+ * add offline import mode
+ * change geocodejson to return a feature class in the 'type' field
+ * add ISO3166-2 to address output (thanks @I70l0teN4ik)
+ * improve parsing and matching of addr: tags
+ * support relations as street members of associatedStreet
+ * better ranking for address results from TIGER data
+ * adapt rank classification to changed tag usage in OSM
+ * update bundled osm2pgsql to 1.6.0
+ * add typing information to Python code
+ * improve unit test coverage
+ * reorganise and speed up code for BDD tests, drop support for scenes
+ * move PHP unit tests to PHP 9.5
+ * extensive typo fixes in documentation (thanks @woodpeck,@StephanGeorg,
+   @amandasaurus, @nslxndr, @stefkiourk, @Luflosi, @kianmeng)
+ * drop official support for installation on CentOS
+ * add installation instructions for Ubuntu 22.04
+ * add support for PHP8
+ * add setup instructions for updates and systemd
+ * drop support for PostgreSQL 9.5
+
+4.0.2
+
+ * fix XSS vulnerability in debug view
+
+4.0.1
+
+ * fix initialisation error in replication script
+ * ICU tokenizer: avoid any special characters in word tokens
+ * better error message when API php script does not exist
+ * fix quoting of house numbers in SQL queries
+ * small fixes and improvements in search query parsing
+ * add documentation for moving the database to a different machine
+
+4.0.0
+
+ * refactor name token computation and introduce ICU tokenizer
+   * name processing now happens in the indexer outside the DB
+   * reorganizes abbreviation handling and moves it to the indexing phases
+   * adds preprocessing of names
+ * add country-specific ranking for Spain, Slovakia
+ * partially switch to using SP-GIST indexes
+ * better updating of dependent addresses for name changes in streets
+ * remove unused/broken tables for external housenumbers
+ * move external postcodes to CSV format and no longer save them in tables
+   (adds support for postcodes for arbitrary countries)
+ * remove postcode helper entries from placex (thanks @AntoJvlt)
+ * change required format for TIGER data to CSV
+ * move configuration of default languages from wiki into config file
+ * expect customized configuration files in project directory by default
+ * disable search API for reverse-only import (thanks @darkshredder)
+ * port most of maintenance/import code to Python and remove PHP utils
+ * add catch-up mode for replication
+ * add updating of special phrases (thanks @AntoJvlt)
+ * add support for special phrases in CSV files (thanks @AntoJvlt)
+ * switch to case-independent matching between place and boundary names
+ * remove disabling of reverse query parsing
+ * minor tweaks to search algorithm to avoid more false positives
+ * major overhaul of the administrator and developer documentation
+ * add security disclosure policy
+ * add testing of installation scripts via CI
+ * drop support for Python < 3.6 and Postgresql < 9.5
+
+3.7.3
+
+ * fix XSS vulnerability in debug view
+
+3.7.2
+
+ * fix database check for reverse-only imports
+ * do not error out in status API result when import date is missing
+ * add array_key_last function for PHP < 7.3 (thanks to @woodpeck)
+ * fix more url when server name is unknown (thanks to @mogita)
+ * commit changes to replication log table
+
+3.7.1
+
+ * fix smaller issues with special phrases import (thanks @AntoJvlt)
+ * add index to speed up continued indexing during import
+ * fix index on location_property_tiger(parent_place_id) (thanks @changpingc)
+ * make sure Python code is backward-compatible with Python 3.5
+ * various documentation fixes
+
+3.7.0
+
+ * switch to dotenv for configuration file
+ * introduce 'make install' (reorganising most of the code)
+ * introduce nominatim tool as replacement for various php scripts
+ * introduce project directories and allow multiple installations from same build
+ * clean up BDD tests: drop nose, reorganise step code
+ * simplify test database for API BDD tests and autoinstall database
+ * port most of the code for command-line tools to Python
+   (thanks to @darkshredder and @AntoJvlt)
+ * add tests for all tooling
+ * replace pyosmium-get-changes with custom internal implementation using
+   pyosmium
+ * improve search for queries with housenumber and partial terms
+ * add database versioning
+ * use jinja2 for preprocessing SQL files
+ * introduce automatic migrations
+ * reverse fix preference of interpolations over housenumbers
+ * parallelize indexing of postcodes
+ * add non-key indexes to speed up housenumber + street searches
+ * switch housenumber field in placex to save transliterated names
+
+3.6.0
+
+ * add full support for searching by and displaying of addr:* tags
+ * improve address output for large-area objects
+ * better use of country names from OSM data for search and display
+ * better debug output for reverse call
+ * add support for addr:place links without an place equivalent in OSM
+ * improve finding postcodes with normalisation artefacts
+ * batch object to index for rank 30, avoiding a wrap-around of transaction
+   IDs in PostgreSQL
+ * introduce dynamic address rank computation for administrative boundaries
+   depending on linked objects and their place in the admin level hierarchy
+ * add country-specific address ranking for Indonesia, Russia, Belgium and
+   the Netherlands (thanks @hendrikmoree)
+ * make sure wikidata/wikipedia tags are imported for all styles
+ * make POIs searchable by name and housenumber (thanks @joy-yyd)
+ * reverse geocoding now ignores places without an address rank (rivers etc.)
+ * installation of a webserver is no longer mandatory, for development
+   use the php internal webserver via 'make serve
+ * reduce the influence of place nodes in addresses
+ * drop support for the unspecific is_in tag
+ * various minor tweaks to supplied styles
+ * move HTML web frontend into its own project
+ * move scripts for processing external data sources into separate directories
+ * introduce separate configuration for website (thanks @krahulreddy)
+ * update documentation, in particular, clean up development docs
+ * update osm2pgsql to 1.4.0
+
+3.5.2
+
+ * ensure that wikipedia tags are imported for all styles
+ * reinstate verbosity for indexing during updates
+ * make house number reappear in display name on named POIs
+ * introduce batch processing in indexer to avoid transaction ID overrun
+ * increase splitting for large geometries to improve indexing speed
+ * remove deprecated get_magic_quotes_gpc() function
+ * make sure that all postcodes have an entry in word and are thus searchable
+ * remove use of ST_Covers in conjunction with ST_Intersects,
+   causes bad query planning and slow updates in Postgis3
+ * update osm2pgsql
+
+3.5.1
+
+ * disable jit and parallel processing in PostgreSQL for osm2pgsql
+ * update libosmium to 2.15.6 (fixes an issue with processing hanging
+   on large multipolygons)
+
+3.5.0
+
+ * structured select on HTML search page
+ * new PHP Nominatim\Shell class to wrap shell escaping
+ * remove polygon parameter from all API calls
+ * improve handling of postcode areas
+ * reorganise place linking algorithm, now using wikidata tag as well
+ * remove linkees from search_name and larger_area tables
+ * introduce country-specific address ranks
+ * reorganise rank address computation
+ * cleanup of partition function
+ * improve parenting for large POIs
+ * add support for Postgresql 12 and Postgis 3
+ * add earlier cleanup when --drop is given, to reduce memory usage
+ * remove use of place_id in URLs
+ * replace C nominatim indexer with a simpler Python implementation
+ * split up the huge sql/functions.sql file
+ * move osm2pgsql tests to osm2pgsql
+ * add new extratags style which imports all tags from OSM
+ * add new script for checking the import after completion
+ * update osm2pgsql, reducing memory usage
+ * use new wikipedia importance and add processing of wikidata tags
+ * add search form for details page
+ * use ExtraDataPath for country_grid table
+ * remove short_name from list of names to be displayed
+ * split up CMakeFile, so that all parts can be built separately
+ * update installation instructions for CentOS and Ubuntu
+ * add script for importing/updating multiple country extracts
+ * various documentation improvements
+
+3.4.2
+
+ * fix security bug in /details endpoint where user input was not
+   properly sanitized
+
+3.4.1
+
+ * update osm2pgsql to fix hans during updates and lost address numbers
+   during updates
+
+3.4.0
+
+ * increase required version for PostgreSQL(9.3), PostGIS(2.2) and PHP(7.0)
+ * better error reporting for out-of-memory errors
+ * exclude postcode ranges separated by colon from centre point calculation
+ * update osm2pgsql, better handling of imports without flatnode file
+ * switch to more efficient algorithm for word set computation
+ * use only boundaries for country and state parts of addresses
+ * improve updates of addresses with housenumbers and interpolations
+ * remove country from place_addressline table and use country_code instead
+ * optimise indexes on search_name partition tables
+ * improve searching of attached streets for large objects like airports
+ * drop support for python 2
+ * new scripts for importing Wikidata for importance
+ * create and drop indexes concurrently to not clash with auto vacuum
+ * various documentation improvements
+
+
+3.3.0
+
+ * zoom 17 in reverse now zooms in on minor streets
+ * fix use of postcode relations in address
+ * support for housenumber 0 on interpolations
+ * replace database abstraction DB with PDO and switch to using exceptions
+ * exclude line features at rank 30 from reverse geocoding
+ * remove self-reference and country from place_addressline
+ * make json output more readable (less escaping)
+ * update conversion scripts for postcodes
+ * scripts in utils/ are no longer executable (always use scripts in build dir)
+ * remove Natural Earth country fallback (OSM is complete enough)
+ * make rank assignments configurable
+ * allow accept languages with underscore
+ * new reverse-only import mode (without search index table)
+ * rely on boundaries only for states and countries
+ * update osm2pgsql, now using a configurable style
+ * provide multiple import styles
+ * improve search when house number and postcodes are dropped
+ * overhaul of setup code
+ * add support for PHPUnit 6
+ * update test database
+ * various documentation improvements
+
+3.2.0
+
+ * complete rewrite of reverse search algorithm
+ * add new geojson and geocodejson output formats
+ * add simple export script to export addresses to CSV
+ * remove is_in terms from address computation
+ * remove unused search_name_country tables
+ * various smaller fixes to query parsing
+ * convert Tokens and token types to class types
+ * correctly handle update when boundary object type is changed
+ * improve debug output for /search endpoint
+ * update to latest osm2pgsql and leaflet.js
+ * overhaul of /details endpoint:
+     * new class parameter when using osmtype/osmid parameters
+     * permalink to instance-independent osmtype/osmid parameter format
+     * new json output format
+ * update CentOS vagrant machine to use SELinux
+ * add vagrant scripts for Ubuntu 18.04
+ * fix build process for BSD
+ * enable running the database on a different host than the setup scripts
+ * allow to configure use of custom PHP binaries (PHP_BIN)
+ * extensive coding style improvements to PHP code
+ * more PHP unit tests for new classes
+ * increase coverage for API tests
+ * add documentation for API
+
+3.1.0
+
+ * rework postcode handling and introduce location_postcode table
+ * make setup less verbose and print a summary in the end
+ * setup: error out when web site user does not exist
+ * add more API tests to complete code coverage
+ * reinstate key-value amenity search (special term [key=value])
+ * fix detection of coordinates in query
+ * various smaller tweaks to ranking of search interpretations
+ * complete overhaul of PHP frontend code using OOP
+ * add address rank to details page
+ * update Tiger scripts for 2017 data and clean up unused code
+ * various bug fixes and improvements to UI
+ * improve reverse geocoding performance close to coasts
+ * more PHP style cleanup (quoting)
+ * allow unnamed road in reverse geocoding to avoid too far off results
+ * add function to recalculate counts for full-word search term
+ * add function to check if new updates are available
+ * update documentation and switch to mkdocs for generating HTML
+
+3.0.1
+
+ * fix bug in geometry building algorithm in osm2pgsql
+ * fix typos in build instructions
+
+3.0.0
 
  * move to cmake build system
  * various fixes to HTML output
@@ -16,7 +556,7 @@
  * move installation documentation into this repo
  * add self-documenting vagrant scripts
  * remove --create-website, recommend to use website directory in build
- * add accessor functions for URL parameters and improve erro checking
+ * add accessor functions for URL parameters and improve error checking
  * remove IP blocking and rate-limiting code
  * enable CI via travis
  * reformatting for more consistent coding style
@@ -27,7 +567,7 @@
  * update to refactored osm2pgsql which use libosmium based types
  * switch from osmosis to pyosmium for updates
  * be more strict when matching against special search terms
- * handle postcode entries with mutliple values correctly
+ * handle postcode entries with multiple values correctly
 
 2.5
 

LICENSES/Apache-2.0.txt

@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

LICENSES/GPL-2.0-only.txt

@@ -0,0 +1,339 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+                    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+                            NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License along
+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.

Makefile

@@ -0,0 +1,44 @@
+all:
+
+# Building of wheels
+
+build: clean-build build-db build-api
+
+clean-build:
+	rm -f dist/*
+
+build-db:
+	python3 -m build packaging/nominatim-db --outdir dist/
+
+build-api:
+	python3 -m build packaging/nominatim-api --outdir dist/
+
+# Tests
+
+tests: mypy lint pytest bdd
+
+mypy:
+	mypy --strict --python-version 3.9 src
+
+pytest:
+	pytest test/python
+
+lint:
+	flake8 src test/python test/bdd
+
+bdd:
+	pytest test/bdd --nominatim-purge
+
+# Documentation
+
+doc:
+	mkdocs build
+
+serve-doc:
+	mkdocs serve
+
+manpage:
+	argparse-manpage --pyfile man/create-manpage.py --function get_parser --project-name Nominatim --url https://nominatim.org  > man/nominatim.1 --author 'the Nominatim developer community' --author-email info@nominatim.org
+
+
+.PHONY: tests mypy pytest lint bdd build clean-build build-db build-api doc serve-doc manpage

README.md

@@ -1,4 +1,4 @@
-[![Build Status](https://travis-ci.org/openstreetmap/Nominatim.svg?branch=master)](https://travis-ci.org/openstreetmap/Nominatim)
+[![Build Status](https://github.com/osm-search/Nominatim/workflows/CI%20Tests/badge.svg)](https://github.com/osm-search/Nominatim/actions?query=workflow%3A%22CI+Tests%22)
 
 Nominatim
 =========
@@ -6,56 +6,79 @@ Nominatim
 Nominatim (from the Latin, 'by name') is a tool to search OpenStreetMap data
 by name and address (geocoding) and to generate synthetic addresses of
 OSM points (reverse geocoding). An instance with up-to-date data can be found
-at http://nominatim.openstreetmap.org. Nominatim is also used as one of the
-sources for the Search box on the OpenStreetMap home page and powers the search
-on the MapQuest Open Initiative websites.
+at https://nominatim.openstreetmap.org. Nominatim is also used as one of the
+sources for the Search box on the OpenStreetMap home page.
 
 Documentation
 =============
 
-More information about Nominatim, including usage and installation instructions,
-can be found in the docs/ subdirectory and in the OSM wiki at:
-
-http://wiki.openstreetmap.org/wiki/Nominatim
+The documentation of the latest development version is in the
+`docs/` subdirectory. A HTML version can be found at
+https://nominatim.org/release-docs/develop/ .
 
 Installation
 ============
 
-There are detailed installation instructions in the /docs directory.
-Here is a quick summary of the necessary steps.
+The latest stable release can be downloaded from https://nominatim.org.
+There you can also find [installation instructions for the release](https://nominatim.org/release-docs/latest/admin/Installation), as well as an extensive [Troubleshooting/FAQ section](https://nominatim.org/release-docs/latest/admin/Faq/).
 
-1. Compile Nominatim:
+[Detailed installation instructions for current master](https://nominatim.org/release-docs/develop/admin/Installation)
+can be found at nominatim.org as well.
 
-        mkdir build
-        cd build
-        cmake ..
-        make
+A quick summary of the necessary steps:
 
-   For more detailed installation instructions see [docs/Installation.md](docs/Installation.md).
-   There are also step-by-step instructions for
-     [Ubuntu 16.04](docs/install-on-ubuntu-16.md) and
-     [CentOS 7.2](docs/install-on-centos-7.md).
 
-2. Get OSM data and import:
+1. Clone this git repository and download the country grid
 
-        ./build/utils/setup.php --osm-file <your planet file> --all
+        git clone https://github.com/osm-search/Nominatim.git
+        wget -O Nominatim/data/country_osm_grid.sql.gz https://nominatim.org/data/country_grid.sql.gz
 
-   Details can be found in [docs/Import_and_update.md](docs/Import_and_update.md)
+2. Create a Python virtualenv and install the packages:
 
-3. Point your webserver to the ./build/website directory.
+        python3 -m venv nominatim-venv
+        ./nominatim-venv/bin/pip install packaging/nominatim-{api,db}
 
+3. Create a project directory, get OSM data and import:
+
+        mkdir nominatim-project
+        cd nominatim-project
+        ../nominatim-venv/bin/nominatim import --osm-file <your planet file> 2>&1 | tee setup.log
+
+
+4. Start the webserver:
+
+        ./nominatim-venv/bin/pip install uvicorn falcon
+        ../nominatim-venv/bin/nominatim serve
 
 
 License
 =======
 
-The source code is available under a GPLv2 license.
+The Python source code is available under a GPL license version 3 or later.
+The Lua configuration files for osm2pgsql are released under the
+Apache License, Version 2.0. All other files are under a GPLv2 license.
 
-Contact and Bugreports
-======================
 
-For questions you can join the geocoding mailinglist, see
-http://lists.openstreetmap.org/listinfo/geocoding
+Contributing
+============
 
-Bugs may be reported on the github project site:
-https://github.com/openstreetmap/Nominatim
+Contributions, bug reports and pull requests are welcome. When reporting a
+bug, please use one of the
+[issue templates](https://github.com/osm-search/Nominatim/issues/new/choose)
+and make sure to provide all the information requested. If you are not
+sure if you have really found a bug, please ask for help in the forums
+first (see 'Questions' below).
+
+For details on contributing, have a look at the
+[contribution guide](CONTRIBUTING.md).
+
+
+Questions and help
+==================
+
+If you have questions about search results and the OpenStreetMap data
+used in the search, use the [OSM Forum](https://community.openstreetmap.org/).
+
+For questions, community help and discussions around the software and
+your own installation of Nominatim, use the
+[Github discussions forum](https://github.com/osm-search/Nominatim/discussions).

SECURITY.md

@@ -0,0 +1,41 @@
+# Security Policy
+
+## Supported Versions
+
+All Nominatim releases receive security updates for two years.
+
+The following table lists the end of support for all currently supported
+versions.
+
+| Version | End of support for security updates |
+| ------- | ----------------------------------- |
+| 5.2.x   | 2027-10-29                          |
+| 5.1.x   | 2027-04-01                          |
+| 5.0.x   | 2027-02-06                          |
+| 4.5.x   | 2026-09-12                          |
+| 4.4.x   | 2026-03-07                          |
+
+## Reporting a Vulnerability
+
+If you believe, you have found an issue in Nominatim that has implications on
+security, please send a description of the issue to **security@nominatim.org**.
+You will receive an acknowledgement of your mail within 3 work days where we
+also notify you of the next steps.
+
+## How we Disclose Security Issues
+
+** The following section only applies to security issues found in released
+versions. Issues that concern the master development branch only will be
+fixed immediately on the branch with the corresponding PR containing the
+description of the nature and severity of the issue. **
+
+Patches for identified security issues are applied to all affected versions and
+new minor versions are released. At the same time we release a statement at
+the [Nominatim blog](https://nominatim.org/blog/) describing the nature of the
+incident.
+
+## List of Previous Incidents
+
+* 2023-11-20 - [SQL injection vulnerability](https://nominatim.org/2023/11/20/release-432.html)
+* 2023-02-21 - [cross-site scripting vulnerability](https://nominatim.org/2023/02/21/release-421.html)
+* 2020-05-04 - [SQL injection issue on /details endpoint](https://lists.openstreetmap.org/pipermail/geocoding/2020-May/002012.html)

VAGRANT.md

@@ -1,11 +1,11 @@
 # Install Nominatim in a virtual machine for development and testing
 
-This document describes how you can install Nominatim inside a Ubuntu 14
+This document describes how you can install Nominatim inside a Ubuntu 24
 virtual machine on your desktop/laptop (host machine). The goal is to give
 you a development environment to easily edit code and run the test suite
 without affecting the rest of your system. 
 
-The installation can run largely unsupervised. You should expect 1-2h from
+The installation can run largely unsupervised. You should expect 1h from
 start to finish depending on how fast your computer and download speed
 is.
 
@@ -15,157 +15,118 @@ is.
 
 2. [Vagrant](https://www.vagrantup.com/downloads.html)
 
-3. Nominatim 
-
-        git clone --recursive https://github.com/openstreetmap/Nominatim.git
-
-    If you haven't used `--recursive`, then you can load the submodules using
-    
-        git submodule init
-        git submodule update
-
+3. Nominatim
 
+        git clone https://github.com/openstreetmap/Nominatim.git
 
 ## Installation
 
 1. Start the virtual machine
 
-        vagrant up ubuntu
+        vagrant up ubuntu24-nginx
 
 2. Log into the virtual machine
 
-        vagrant ssh ubuntu
+        vagrant ssh ubuntu24-nginx
 
 3. Import a small country (Monaco)
 
-    You need to give the virtual machine more memory (2GB) for an import,
-    see `Vagrantfile`. Otherwise 1GB is enough.
-    
     See the FAQ how to skip this step and point Nominatim to an existing database.
 
       ```
       # inside the virtual machine:
-      mkdir data
-      cd build
-      wget --no-verbose --output-document=../data/monaco.osm.pbf http://download.geofabrik.de/europe/monaco-latest.osm.pbf
-      ./utils/setup.php --osm-file ../data/monaco.osm.pbf --osm2pgsql-cache 1000 --all 2>&1 | tee monaco.$$.log
+      cd nominatim-project
+      wget --no-verbose --output-document=monaco.osm.pbf http://download.geofabrik.de/europe/monaco-latest.osm.pbf
+      nominatim import --osm-file monaco.osm.pbf 2>&1 | tee monaco.$$.log
       ```
 
     To repeat an import you'd need to delete the database first
 
-        dropdb -if-exists nominatim
+        dropdb --if-exists nominatim
 
 
 
 ## Development
 
 Vagrant maps the virtual machine's port 8089 to your host machine. Thus you can
-see Nominatim in action on [locahost:8089](http://localhost:8089/nominatim/).
+see Nominatim in action on [localhost:8089](http://localhost:8089/nominatim/).
 
 You edit code on your host machine in any editor you like. There is no need to
 restart any software: just refresh your browser window.
 
-PHP errors are written to `/var/log/apache2/error.log`.
-
-With `echo` and `var_dump()` you write into the output (HTML/XML/JSON) when
-you either add `&debug=1` to the URL (preferred) or set
-`@define('CONST_Debug', true);` in `settings/local.php`.
-
-
-
-
-## Running functional tests
-
-Tests in `/features/db` and `/features/osm2pgsql` have to pass 100%. Other
-tests might require full planet-wide data. Sadly even if you have your own
-planet-wide data there will be enough differences to the openstreetmap.org
-installation to cause false positives in the other tests (see FAQ). 
-
-To run the full test suite
-
-    cd ~/Nominatim/tests
-    NOMINATIM_SERVER=http://localhost:8089/nominatim lettuce features
-
-To run a single file
-
-    NOMINATIM_SERVER=http://localhost:8089/nominatim lettuce features/api/reverse.feature
-    
-To run specific tests you can add tags just before the `Scenario line`, e.g.
-
-    @bug-34
-    Scenario: address lookup for non-existing or invalid node, way, relation
-
-and then
-
-    NOMINATIM_SERVER=http://localhost:8089/nominatim lettuce -t bug-34
-
-
-## Running unit tests
-
-    cd ~/Nominatim/tests-php
-    phpunit ./
-
-
+Use the functions of the `log()` object to create temporary debug output.
+Add `&debug=1` to the URL to see the output.
 
+In the Python BDD test you can use `logger.info()` for temporary debug
+statements.
 
+For more information on running tests, see
+https://nominatim.org/release-docs/develop/develop/Testing/
 
 
 ## FAQ
 
 ##### Will it run on Windows?
 
-Yes, Vagrant and Virtualbox can be installed on MS Windows just fine. You need a 64bit
-version of Windows.
+Yes, Vagrant and Virtualbox can be installed on MS Windows just fine. You need
+a 64bit version of Windows.
 
+##### Will it run on Apple Silicon?
+
+You might need to replace Virtualbox with [Parallels](https://www.parallels.com/products/desktop/).
+There is no free/open source version of Parallels.
 
 ##### Why Monaco, can I use another country?
 
-Of course! The Monaco import takes less than 30 minutes and works with 2GB RAM.
+Of course! The Monaco import takes less than 10 minutes and works with 2GB RAM.
 
 ##### Will the results be the same as those from nominatim.openstreetmap.org?
 
-No. Long running Nominatim installations will differ once new import features (or
+No. Long-running Nominatim installations will differ once new import features (or
 bug fixes) get added since those usually only get applied to new/changed data.
 
 Also this document skips the optional Wikipedia data import which affects ranking
-of search results. See [Nominatim installation](http://wiki.openstreetmap.org/wiki/Nominatim/Installation) for details.
+of search results. See [Nominatim installation](https://nominatim.org/release-docs/latest/admin/Installation)
+for details.
 
-##### Why Ubuntu and CentOS, can I test CentOS/CoreOS/FreeBSD?
+##### Why Ubuntu? Can I test CentOS/Fedora/CoreOS/FreeBSD?
 
-There is a Vagrant script for CentOS available. Simply start your box
-with `vagrant up centos` and then log in with `vagrant ssh centos`.
-In general Nominatim will also run in the other environments. The installation steps
+There used to be a Vagrant script for CentOS available, but the Nominatim directory
+isn't symlinked/mounted to the host which makes development trickier. We used
+it mainly for debugging installation with SELinux.
+
+In general Nominatim will run in the other environments. The installation steps
 are slightly different, e.g. the name of the package manager, Apache2 package
 name, location of files. We chose Ubuntu because that is closest to the
 nominatim.openstreetmap.org production environment.
 
-You can configure/download other Vagrant boxes from [vagrantbox.es](http://www.vagrantbox.es/).
-
+You can configure/download other Vagrant boxes from
+[https://app.vagrantup.com/boxes/search](https://app.vagrantup.com/boxes/search).
 
 ##### How can I connect to an existing database?
 
-Let's say you have a Postgres database named `nominatim_it` on server `your-server.com` and port `5432`. The Postgres username is `postgres`. You can edit `settings/local.php` and point Nominatim to it.
+Let's say you have a Postgres database named `nominatim_it` on server `your-server.com`
+and port `5432`. The Postgres username is `postgres`. You can edit the `.env` in your
+project directory and point Nominatim to it.
 
-    pgsql://postgres@your-server.com:5432/nominatim_it
-    
-No data import necessary, no restarting necessary.
+    NOMINATIM_DATABASE_DSN="pgsql:host=your-server.com;port=5432;user=postgres;dbname=nominatim_it
+
+No data import or restarting necessary.
 
 If the Postgres installation is behind a firewall, you can try
 
     ssh -L 9999:localhost:5432 your-username@your-server.com
 
 inside the virtual machine. It will map the port to `localhost:9999` and then
-you edit `settings/local.php` with
+you edit `.env` file with
 
-    pgsql://postgres@localhost:9999/nominatim_it
+    NOMINATIM_DATABASE_DSN="pgsql:host=localhost;port=9999;user=postgres;dbname=nominatim_it"
 
-To access postgres directly remember to specify the hostname, e.g. `psql --host localhost --port 9999 nominatim_it`
+To access postgres directly remember to specify the hostname,
+e.g. `psql --host localhost --port 9999 nominatim_it`
 
 
 ##### My computer is slow and the import takes too long. Can I start the virtual machine "in the cloud"?
 
-Yes. It's possible to start the virtual machine on [Amazon AWS (plugin)](https://github.com/mitchellh/vagrant-aws) or [DigitalOcean (plugin)](https://github.com/smdahlen/vagrant-digitalocean).
-
-
-
-
+Yes. It's possible to start the virtual machine on [Amazon AWS (plugin)](https://github.com/mitchellh/vagrant-aws)
+or [DigitalOcean (plugin)](https://github.com/smdahlen/vagrant-digitalocean).

Vagrantfile

@@ -4,66 +4,107 @@
 Vagrant.configure("2") do |config|
   # Apache webserver
   config.vm.network "forwarded_port", guest: 80, host: 8089
+  config.vm.network "forwarded_port", guest: 8088, host: 8088
 
   # If true, then any SSH connections made will enable agent forwarding.
   config.ssh.forward_agent = true
 
+  # Never sync the current directory to /vagrant.
+  config.vm.synced_folder ".", "/vagrant", disabled: true
+
   checkout = "yes"
   if ENV['CHECKOUT'] != 'y' then
-      config.vm.synced_folder ".", "/home/vagrant/Nominatim"
-      checkout = "no"
+    checkout = "no"
   end
 
-  config.vm.define "ubuntu", primary: true do |sub|
-      sub.vm.box = "bento/ubuntu-16.04"
-      sub.vm.provision :shell do |s|
-        s.path = "vagrant/Install-on-Ubuntu-16.sh"
-        s.privileged = false
-        s.args = [checkout]
-      end
+  config.vm.provider "hyperv" do |hv, override|
+    hv.memory = 2048
+    hv.linked_clone = true
+    if ENV['CHECKOUT'] != 'y' then
+      override.vm.synced_folder ".", "/home/vagrant/Nominatim", type: "smb", smb_host: ENV['SMB_HOST'] || ENV['COMPUTERNAME']
+    end
   end
 
-  config.vm.define "travis" do |sub|
-      sub.vm.box = "bento/ubuntu-14.04"
-      sub.vm.provision :shell do |s|
-        s.path = "vagrant/install-on-travis-ci.sh"
-        s.privileged = false
-        s.args = [checkout]
-      end
-  end
-
-   config.vm.define "centos" do |sub|
-      sub.vm.box = "bento/centos-7.2"
-      sub.vm.provision :shell do |s|
-        s.path = "vagrant/Install-on-Centos-7.sh"
-        s.privileged = false
-        s.args = [checkout]
-      end
-  end
-
-  # configure shared package cache if possible
-  #if Vagrant.has_plugin?("vagrant-cachier")
-  #  config.cache.enable :apt
-  #  config.cache.scope = :box
-  #end
-
-
-  config.vm.provider "virtualbox" do |vb|
+  config.vm.provider "virtualbox" do |vb, override|
     vb.gui = false
-    vb.customize ["modifyvm", :id, "--memory", "2048"]
+    vb.memory = 2048
+    vb.customize ["setextradata", :id, "VBoxInternal2/SharedFoldersEnableSymlinksCreate//vagrant","0"]
+    if ENV['CHECKOUT'] != 'y' then
+      override.vm.synced_folder ".", "/home/vagrant/Nominatim"
+    end
   end
 
+  config.vm.provider "parallels" do |prl, override|
+    prl.update_guest_tools = false
+    prl.memory = 2048
+    if ENV['CHECKOUT'] != 'y' then
+      override.vm.synced_folder ".", "/home/vagrant/Nominatim"
+    end
+  end
 
-  # config.vm.provider :digital_ocean do |provider, override|
-  #   override.ssh.private_key_path = '~/.ssh/id_rsa'
-  #   override.vm.box = 'digital_ocean'
-  #   override.vm.box_url = "https://github.com/smdahlen/vagrant-digitalocean/raw/master/box/digital_ocean.box"
+  config.vm.provider "libvirt" do |lv, override|
+    lv.memory = 2048
+    lv.nested = true
+    if ENV['CHECKOUT'] != 'y' then
+      override.vm.synced_folder ".", "/home/vagrant/Nominatim", type: 'nfs', nfs_udp: false
+    end
+  end
 
-  #   provider.token = ''
-  #   # provider.token = 'YOUR TOKEN'
-  #   provider.image = 'ubuntu-14-04-x64'
-  #   provider.region = 'nyc2'
-  #   provider.size = '512mb'
-  # end
+  config.vm.define "ubuntu22", primary: true do |sub|
+      sub.vm.box = "generic/ubuntu2204"
+      sub.vm.provision :shell do |s|
+        s.path = "vagrant/Install-on-Ubuntu-22.sh"
+        s.privileged = false
+        s.args = [checkout]
+      end
+  end
 
+  config.vm.define "ubuntu22-apache" do |sub|
+      sub.vm.box = "generic/ubuntu2204"
+      sub.vm.provision :shell do |s|
+        s.path = "vagrant/Install-on-Ubuntu-22.sh"
+        s.privileged = false
+        s.args = [checkout, "install-apache"]
+      end
+  end
+
+  config.vm.define "ubuntu22-nginx" do |sub|
+      sub.vm.box = "generic/ubuntu2204"
+      sub.vm.provision :shell do |s|
+        s.path = "vagrant/Install-on-Ubuntu-22.sh"
+        s.privileged = false
+        s.args = [checkout, "install-nginx"]
+      end
+  end
+
+  config.vm.define "ubuntu24" do |sub|
+      sub.vm.box = "bento/ubuntu-24.04"
+      if RUBY_PLATFORM.include?('darwin') && RUBY_PLATFORM.include?('arm64')
+        # Apple M processor
+        sub.vm.box = 'gutehall/ubuntu24-04'
+      end
+      sub.vm.provision :shell do |s|
+        s.path = "vagrant/Install-on-Ubuntu-24.sh"
+        s.privileged = false
+        s.args = [checkout]
+      end
+  end
+
+  config.vm.define "ubuntu24-apache" do |sub|
+      sub.vm.box = "bento/ubuntu-24.04"
+      sub.vm.provision :shell do |s|
+        s.path = "vagrant/Install-on-Ubuntu-24.sh"
+        s.privileged = false
+        s.args = [checkout, "install-apache"]
+      end
+  end
+
+  config.vm.define "ubuntu24-nginx" do |sub|
+      sub.vm.box = "bento/ubuntu-24.04"
+      sub.vm.provision :shell do |s|
+        s.path = "vagrant/Install-on-Ubuntu-24.sh"
+        s.privileged = false
+        s.args = [checkout, "install-nginx"]
+      end
+  end
 end

data/gb_postcode_table.sql

@@ -1,26 +0,0 @@
--- This data contains Ordnance Survey data © Crown copyright and database right 2010. 
--- Code-Point Open contains Royal Mail data © Royal Mail copyright and database right 2010.
--- OS data may be used under the terms of the OS OpenData licence:
--- http://www.ordnancesurvey.co.uk/oswebsite/opendata/licence/docs/licence.pdf
-
-SET statement_timeout = 0;
-SET client_encoding = 'UTF8';
-SET standard_conforming_strings = off;
-SET check_function_bodies = false;
-SET client_min_messages = warning;
-SET escape_string_warning = off;
-
-SET search_path = public, pg_catalog;
-
-SET default_tablespace = '';
-
-SET default_with_oids = false;
-
-CREATE TABLE gb_postcode (
-    id integer,
-    postcode character varying(9),
-    geometry geometry,
-    CONSTRAINT enforce_dims_geometry CHECK ((st_ndims(geometry) = 2)),
-    CONSTRAINT enforce_srid_geometry CHECK ((st_srid(geometry) = 4326))
-);
-

data/words.sql

@@ -18,12 +18,13 @@ SET default_with_oids = false;
 -- Name: word_frequencies; Type: TABLE; Schema: public; Owner: -; Tablespace: 
 --
 
+DROP TABLE IF EXISTS word_frequencies;
+
 CREATE TABLE word_frequencies (
     word_token text,
     count bigint
 );
 
-
 --
 -- Data for Name: word_frequencies; Type: TABLE DATA; Schema: public; Owner: -
 --
@@ -29786,8 +29787,7 @@ st	5557484
 
 -- prefill word table
 
-select count(make_keywords(v)) from (select distinct svals(name) as v from place) as w where v is not null;
-select count(make_keywords(v)) from (select distinct address->'postcode' as v from place where address ? 'postcode') as w where v is not null;
+select count(precompute_words(v)) from (select distinct svals(name) as v from place) as w where v is not null;
 select count(getorcreate_housenumber_id(make_standard_name(v))) from (select distinct address->'housenumber' as v from place where address ? 'housenumber') as w;
 
 -- copy the word frequencies

docs/CMakeLists.txt

@@ -1,32 +0,0 @@
-# Auto-generated vagrant install documentation
-
-set (INSTALLDOCFILES
-     Install-on-Centos-7
-     Install-on-Ubuntu-16
-    )
-
-foreach (df ${INSTALLDOCFILES})
-    ADD_CUSTOM_COMMAND( OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${df}.md
-        COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/bash2md.sh ${PROJECT_SOURCE_DIR}/vagrant/${df}.sh ${CMAKE_CURRENT_BINARY_DIR}/${df}.md
-        MAIN_DEPENDENCY ${PROJECT_SOURCE_DIR}/vagrant/${df}.sh
-        DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/bash2md.sh
-        COMMENT "Creating markdown docs from vagrant/${df}.sh"
-        )
-
-ADD_CUSTOM_TARGET( md_install_${df} ALL
-        DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${df}.md
-        )
-endforeach()
-
-# Copied static documentation
-
-set (GENERALDOCFILES
-     Installation.md
-     Import-and-Update.md
-     Faq.md
-    )
-
-foreach (df ${GENERALDOCFILES})
-   CONFIGURE_FILE(${df} ${df})
-endforeach()
-

docs/Faq.md

@@ -1,127 +0,0 @@
-Frequently Asked Questions
-==========================
-
-Running Your Own Instance
--------------------------
-
-### Can I import only a few countries and also keep them up to date?
-
-You should use the extracts and updates from http://download.geofabrik.de.
-For the intial import, download the countries you need and merge them.
-See [OSM Help](https://help.openstreetmap.org/questions/48843/merging-two-or-more-geographical-areas-to-import-two-or-more-osm-files-in-nominatim)
-for examples how to do that. Use the resulting single osm file when
-running `setup.php`.
-
-For updates you need to download the change files for each country
-once per day and apply them **separately** using
-
-    ./utils/update.php --import-diff <filename> --index
-    
-See [this issue](https://github.com/openstreetmap/Nominatim/issues/60#issuecomment-18679446)
-for a script that runs the updates using osmosis.
-
-### My website shows: `XML Parsing Error: XML or text declaration not at start of entity Location</code>.`
-
-Make sure there are no spaces at the beginning of your `settings/local.php` file.
-
-
-Installation
-------------
-
-### I accidentally killed the import process after it has been running for many hours. Can it be resumed?
-
-It is possible if the import already got to the indexing stage.
-Check the last line of output that was logged before the process
-was killed. If it looks like this:
-
-   Done 844 in 13 @ 64.923080 per second - Rank 26 ETA (seconds): 7.886255
-
-then you can resume with the following command:
-
-   ./utils/setup.php --index --create-search-indices --create-country-names
-
-If the reported rank is 26 or higher, you can also safely add `-index-noanalyse`.
-
-
-### When running the setup.php script I get a warning:
-    `PHP Warning:  file_get_contents(): open_basedir restriction in effect.`
-
-You need to adjust the [open_basedir](http://www.php.net/manual/en/ini.core.php#ini.open-basedir) setting
-in your PHP configuration (php.ini file). By default this setting may look like this:
-
-    open_basedir = /srv/http/:/home/:/tmp/:/usr/share/pear/
-
-Either add reported directories to the list or disable this setting temporarily by 
-dding ";" at the beginning of the line. Don't forget to enable this setting again
-once you are done with the PHP command line operations.
-
-
-### The Apache log contains lots of PHP warnings like this:
-    `PHP Warning:  date_default_timezone_set() function.`
-
-You should set the default time zone as instructed in the warning in
-your `php.ini` file. Find the entry about timezone and set it to
-something like this:
-  
-    ; Defines the default timezone used by the date functions
-    ; http://php.net/date.timezone
-    date.timezone = 'America/Denver'
-
-Or
-
-   echo "date.timezone = 'America/Denver'" > /etc/php.d/timezone.ini
-
-
-### When running the import I get a version mismatch:
-    `COPY_END for place failed: ERROR: incompatible library "/opt/Nominatim/module/nominatim.so": version mismatch`
-
-pg_config seems to use bad includes sometimes when multiple versions
-of PostgreSQL are available in the system. Make sure you remove the
-server development libraries (`postgresql-server-dev-9.1` on Ubuntu)
-and recompile (`cmake .. && make`).
-
-
-### I see the error: `function transliteration(text) does not exist`
-
-Reinstall the nominatim functions with `setup.php --create--functions`
-and check for any errors, e.g. a missing `nominatim.so` file.
-
-
-### The website shows: `Could not get word tokens`
-
-The server cannot access your database. Add `&debug=1` to your URL
-to get the full error message.
-
-
-### On CentOS the website shows `could not connect to server: No such file or directory`
-
-On CentOS v7 the PostgreSQL server is started with `systemd`.
-Check if `/usr/lib/systemd/system/httpd.service` contains a line `PrivateTmp=true`.
-If so then Apache cannot see the `/tmp/.s.PGSQL.5432` file. It's a good security feature,
-so use the [[#PostgreSQL_UNIX_Socket_Location_on_CentOS|preferred solution]] 
-
-However, you can solve this the quick and dirty way by commenting out that line and then run
-
-    sudo systemctl daemon-reload
-    sudo systemctl restart httpd
-
-
-### Setup.php fails with the message: `DB Error: extension not found`
-
-Make sure you have the Postgres extensions hstore and postgis installed.
-See the installation instruction for a full list of required packages.
-
-### When running the setup.php script I get a error:
-    `Cannot redeclare getDB() (previously declared in /your/path/Nominatim/lib/db.php:4)`
-
-The message is a bit misleading as PHP needs to load the file `DB.php` and
-instead re-loads Nominatim's `db.php`. To solve this make sure you
-have the [http://pear.php.net/package/DB/ Pear module 'DB'] installed.
-
-    sudo pear install DB
-
-### I forgot to delete the flatnodes file before starting an import
-
-That's fine. For each import the flatnodes file get overwritten.
-See https://help.openstreetmap.org/questions/52419/nominatim-flatnode-storage
-for more information.

docs/Import-and-Update.md

@@ -1,177 +0,0 @@
-Importing a new database
-========================
-
-The following instructions explain how to create a Nominatim database
-from an OSM planet file and how to keep the database up to date. It
-is assumed that you have already successfully installed the Nominatim
-software itself, if not return to the [installation page](Installation.md).
-
-Configuration setup in settings/local.php
------------------------------------------
-
-There are lots of configuration settings you can tweak. Have a look
-at `settings/settings.php` for a full list. Most should have a sensible default.
-If you plan to import a large dataset (e.g. Europe, North America, planet),
-you should also enable flatnode storage of node locations. With this
-setting enabled, node coordinates are stored in a simple file instead
-of the database. This will save you import time and disk storage.
-Add to your `settings/local.php`:
-
-    @define('CONST_Osm2pgsql_Flatnode_File', '/path/to/flatnode.file');
-
-Replace the second part with a suitable path on your system and make sure
-the directory exists. There should be at least 35GB of free space.
-
-Downloading additional data
----------------------------
-
-### Wikipedia rankings
-
-Wikipedia can be used as an optional auxiliary data source to help indicate
-the importance of osm features. Nominatim will work without this information
-but it will improve the quality of the results if this is installed.
-This data is available as a binary download:
-
-    cd $NOMINATIM_SOURCE_DIR/data
-    wget http://www.nominatim.org/data/wikipedia_article.sql.bin
-    wget http://www.nominatim.org/data/wikipedia_redirect.sql.bin
-
-Combined the 2 files are around 1.5GB and add around 30GB to the install
-size of nominatim. They also increase the install time by an hour or so.
-
-### UK postcodes
-
-Nominatim can use postcodes from an external source to improve searches that involve a UK postcode. This data can be optionally downloaded: 
-
-    cd $NOMINATIM_SOURCE_DIR/data
-    wget http://www.nominatim.org/data/gb_postcode_data.sql.gz
-
-
-Initial import of the data
---------------------------
-
-**Important:** first try the import with a small excerpt, for example from
-[Geofabrik](http://download.geofabrik.de).
-
-Download the data to import and load the data with the following command:
-
-    ./utils/setup.php --osm-file <your data file> --all [--osm2pgsql-cache 28000] 2>&1 | tee setup.log
-
-The `--osm2pgsql-cache` parameter is optional but strongly recommended for
-planet imports. It sets the node cache size for the osm2pgsql import part
-(see `-C` parameter in osm2pgsql help). 28GB are recommended for a full planet
-import, for excerpts you can use less. Adapt to your available RAM to
-avoid swapping, never give more than 2/3 of RAM to osm2pgsql.
-
-
-Loading additional datasets
----------------------------
-
-The following commands will create additional entries for POI searches:
-
-    ./utils/specialphrases.php --wiki-import > specialphrases.sql
-    psql -d nominatim -f specialphrases.sql
-
-
-Installing Tiger housenumber data for the US
-============================================
-
-Nominatim is able to use the official TIGER address set to complement the
-OSM housenumber data in the US. You can add TIGER data to your own Nominatim
-instance by following these steps:
-
-  1. Install the GDAL library and python bindings and the unzip tool
-
-       * Ubuntu: `sudo apt-get install python-gdal unzip`
-       * CentOS: `sudo yum install gdal-python unzip`
-
-  2. Get the TIGER 2015 data. You will need the EDGES files
-     (3,234 zip files, 11GB total). Choose one of the two sources:
-
-         wget -r ftp://ftp2.census.gov/geo/tiger/TIGER2015/EDGES/
-         wget -r ftp://mirror1.shellbot.com/census/geo/tiger/TIGER2015/EDGES/
-
-     The first one is the original source, the second a considerably faster
-     mirror.
-
-  3. Convert the data into SQL statements (stored in data/tiger): 
-
-         ./utils/imports.php --parse-tiger <tiger edge data directory>
-
-  4. Import the data into your Nominatim database: 
-
-         ./utils/setup.php --import-tiger-data
-
-  5. Enable use of the Tiger data in your `settings/local.php` by adding:
-
-         @define('CONST_Use_US_Tiger_Data', true);
-
-  6. Apply the new settings:
-
-        ./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
-
-Be warned that the import can take a very long time, especially if you
-import all of the US. The entire US adds about 10GB to your database.
-
-
-Updates
-=======
-
-There are many different possibilities to update your Nominatim database.
-The following section describes how to keep it up-to-date with Pyosmium.
-For a list of other methods see the output of `./utils/update.php --help`.
-
-Installing the newest version of Pyosmium
------------------------------------------
-
-It is recommended to install Pyosmium via pip:
-
-    pip install --user osmium
-
-Nominatim needs a tool called `pyosmium-get-updates` that comes with
-Pyosmium. You need to tell Nominatim where to find it. Add the
-following line to your `settings/local.php`:
-
-    @define('CONST_Pyosmium_Binary', '/home/user/.local/bin/pyosmium-get-changes');
-
-The path above is fine if you used the `--user` parameter with pip.
-Replace `user` with your user name.
-
-Setting up the update process
------------------------------
-
-Next the update needs to be initialised. By default Nominatim is configured
-to update using the global minutely diffs.
-
-If you want a different update source you will need to add some settings
-to `settings/local.php`. For example, to use the daily country extracts
-diffs for Ireland from geofabrik add the following:
-
-    // base URL of the replication service
-    @define('CONST_Replication_Url', 'http://download.geofabrik.de/europe/ireland-and-northern-ireland-updates');
-    // How often upstream publishes diffs
-    @define('CONST_Replication_Update_Interval', '86400');
-    // How long to sleep if no update found yet
-    @define('CONST_Replication_Recheck_Interval', '900');
-
-To set up the update process now run the following command:
-
-    ./utils/update --init-updates
-
-It outputs the date where updates will start. Recheck that this date is
-what you expect.
-
-The --init-updates command needs to be rerun whenever the replication service
-is changed.
-
-Updating Nominatim
-------------------
-
-The following command will keep your database constantly up to date:
-
-    ./utils/update.php --import-osmosis-all
-
-If you have imported multiple country extracts and want to keep them
-up-to-date, have a look at the script in
-[issue #60](https://github.com/openstreetmap/Nominatim/issues/60).
-

docs/Install-on-Centos-7.md

@@ -1,181 +0,0 @@
-
-*Note:* these installation instructions are also available in executable
-        form for use with vagrant under `vagrant/Install-on-Centos-7.sh`.
-
-Installing the Required Software
-================================
-
-These instructions expect that you have a freshly installed CentOS version 7.
-Make sure all packages are up-to-date by running:
-
-    sudo yum update -y
-
-The standard CentOS repositories don't contain all the required packages,
-you need to enable the EPEL repository as well. To enable it on CentOS,
-install the epel-release RPM by running:
-
-    sudo yum install -y epel-release
-
-Now you can install all packages needed for Nominatim:
-
-    sudo yum install -y postgresql-server postgresql-contrib postgresql-devel postgis postgis-utils \
-                        git cmake make gcc gcc-c++ libtool policycoreutils-python \
-                        php-pgsql php php-pear php-pear-DB php-intl libpqxx-devel proj-epsg \
-                        bzip2-devel proj-devel geos-devel libxml2-devel boost-devel expat-devel zlib-devel
-
-If you want to run the test suite, you need to install the following
-additional packages:
-
-    sudo yum install -y python-pip python-Levenshtein python-psycopg2 \
-                        python-numpy php-phpunit-PHPUnit
-    pip install --user --upgrade pip setuptools lettuce==0.2.18 six==1.9 \
-                                 haversine Shapely pytidylib
-    sudo pear install PHP_CodeSniffer
-
-
-System Configuration
-====================
-
-The following steps are meant to configure a fresh CentOS installation
-for use with Nominatim. You may skip some of the steps if you have your
-OS already configured.
-
-Creating Dedicated User Accounts
---------------------------------
-
-Nominatim will run as a global service on your machine. It is therefore
-best to install it under its own separate user account. In the following
-we assume this user is called nominatim and the installation will be in
-/srv/nominatim. To create the user and directory run:
-
-    sudo useradd -d /srv/nominatim -s /bin/bash -m nominatim
-
-You may find a more suitable location if you wish.
-
-To be able to copy and paste instructions from this manual, export
-user name and home directory now like this:
-
-    export USERNAME=nominatim
-    export USERHOME=/srv/nominatim
-
-**Never, ever run the installation as a root user.** You have been warned.
-
-Make sure that system servers can read from the home directory:
-
-    chmod a+x $USERHOME
-
-Setting up PostgreSQL
----------------------
-
-CentOS does not automatically create a database cluster. Therefore, start
-with initializing the database, then enable the server to start at boot:
-
-    sudo postgresql-setup initdb
-    sudo systemctl enable postgresql
-
-
-Next tune the postgresql configuration, which is located in 
-`/var/lib/pgsql/data/postgresql.conf`. See section *Postgres Tuning* in
-[the installation page](Installation.md) for the parameters to change.
-
-Now start the postgresql service after updating this config file.
-
-    sudo systemctl restart postgresql
-
-
-Finally, we need to add two postgres users: one for the user that does
-the import and another for the webserver which should access the database
-only for reading:
-
-
-    sudo -u postgres createuser -s $USERNAME
-    sudo -u postgres createuser apache
-
-
-Setting up the Apache Webserver
--------------------------------
-
-You need to create an alias to the website directory in your apache
-configuration. Add a separate nominatim configuration to your webserver:
-
-```
-sudo tee /etc/httpd/conf.d/nominatim.conf << EOFAPACHECONF
-<Directory "$USERHOME/Nominatim/build/website">
-  Options FollowSymLinks MultiViews
-  AddType text/html   .php
-  DirectoryIndex search.php
-  Require all granted
-</Directory>
-
-Alias /nominatim $USERHOME/Nominatim/build/website
-EOFAPACHECONF
-```
-
-
-
-
-Then reload apache
-
-
-    sudo systemctl restart httpd
-
-
-Adding SELinux Security Settings
---------------------------------
-
-It is a good idea to leave SELinux enabled and enforcing, particularly
-with a web server accessible from the Internet. At a minimum the
-following SELinux labeling should be done for Nominatim:
-
-    sudo semanage fcontext -a -t httpd_sys_content_t "$USERHOME/Nominatim/(website|lib|settings)(/.*)?"
-    sudo semanage fcontext -a -t lib_t "$USERHOME/Nominatim/module/nominatim.so"
-    sudo restorecon -R -v $USERHOME/Nominatim
-
-
-Installing Nominatim
-====================
-
-Building and Configuration
---------------------------
-
-Get the source code from Github and change into the source directory
-
-
-
-    cd $USERHOME
-    git clone --recursive git://github.com/openstreetmap/Nominatim.git
-    cd Nominatim
-
-
-
-
-
-When installing the latest source from github, you also need to
-download the country grid:
-
-
-    wget -O data/country_osm_grid.sql.gz http://www.nominatim.org/data/country_grid.sql.gz
-
-
-The code must be built in a separate directory. Create this directory,
-then configure and build Nominatim in there:
-
-    mkdir build
-    cd build
-    cmake $USERHOME/Nominatim
-    make
-
-You need to create a minimal configuration file that tells nominatim
-the name of your webserver user and the URL of the website:
-
-```
-tee settings/local.php << EOF
-<?php
- @define('CONST_Database_Web_User', 'apache');
- @define('CONST_Website_BaseURL', '/nominatim/');
-EOF
-```
-
-
-Nominatim is now ready to use. Continue with
-[importing a database from OSM data](Import-and-Update.md).

docs/Install-on-Ubuntu-16.md

@@ -1,167 +0,0 @@
-
-
-
-
-
-
-
-
-*Note:* these installation instructions are also available in executable
-        form for use with vagrant under vagrant/Install-on-Ubuntu-16.sh.
-
-Installing the Required Software
-================================
-
-These instructions expect that you have a freshly installed Ubuntu 16.04.
-
-Make sure all packages are are up-to-date by running:
-
-
-
-    sudo apt-get update -qq
-
-Now you can install all packages needed for Nominatim:
-
-    sudo apt-get install -y build-essential cmake g++ libboost-dev libboost-system-dev \
-                            libboost-filesystem-dev libexpat1-dev zlib1g-dev libxml2-dev\
-                            libbz2-dev libpq-dev libgeos-dev libgeos++-dev libproj-dev \
-                            postgresql-server-dev-9.5 postgresql-9.5-postgis-2.2 postgresql-contrib-9.5 \
-                            apache2 php php-pgsql libapache2-mod-php php-pear php-db \
-                            php-intl git
-
-If you want to run the test suite, you need to install the following
-additional packages:
-
-    sudo apt-get install -y python3-dev python3-pip python3-psycopg2 python3-tidylib phpunit
-
-    pip3 install --user behave nose # urllib3
-    sudo pear install PHP_CodeSniffer
-
-
-System Configuration
-====================
-
-The following steps are meant to configure a fresh Ubuntu installation
-for use with Nominatim. You may skip some of the steps if you have your
-OS already configured.
-
-Creating Dedicated User Accounts
---------------------------------
-
-Nominatim will run as a global service on your machine. It is therefore
-best to install it under its own separate user account. In the following
-we assume this user is called nominatim and the installation will be in
-/srv/nominatim. To create the user and directory run:
-
-    sudo useradd -d /srv/nominatim -s /bin/bash -m nominatim
-
-You may find a more suitable location if you wish.
-
-To be able to copy and paste instructions from this manual, export
-user name and home directory now like this:
-
-    export USERNAME=nominatim
-    export USERHOME=/srv/nominatim
-
-**Never, ever run the installation as a root user.** You have been warned.
-
-Make sure that system servers can read from the home directory:
-
-    chmod a+x $USERHOME
-
-Setting up PostgreSQL
----------------------
-
-Tune the postgresql configuration, which is located in 
-`/etc/postgresql/9.5/main/postgresql.conf`. See section *Postgres Tuning* in
-[the installation page](Installation.md) for the parameters to change.
-
-Restart the postgresql service after updating this config file.
-
-    sudo systemctl restart postgresql
-
-
-Finally, we need to add two postgres users: one for the user that does
-the import and another for the webserver which should access the database
-for reading only:
-
-
-    sudo -u postgres createuser -s $USERNAME
-    sudo -u postgres createuser www-data
-
-
-Setting up the Apache Webserver
--------------------------------
-
-You need to create an alias to the website directory in your apache
-configuration. Add a separate nominatim configuration to your webserver:
-
-```
-sudo tee /etc/apache2/conf-available/nominatim.conf << EOFAPACHECONF
-<Directory "$USERHOME/Nominatim/build/website">
-  Options FollowSymLinks MultiViews
-  AddType text/html   .php
-  DirectoryIndex search.php
-  Require all granted
-</Directory>
-
-Alias /nominatim $USERHOME/Nominatim/build/website
-EOFAPACHECONF
-```
-
-
-
-
-Then enable the configuration and restart apache
-
-
-    sudo a2enconf nominatim
-    sudo systemctl restart apache2
-
-
-Installing Nominatim
-====================
-
-Building and Configuration
---------------------------
-
-Get the source code from Github and change into the source directory
-
-
-
-    cd $USERHOME
-    git clone --recursive git://github.com/openstreetmap/Nominatim.git
-    cd Nominatim
-
-
-
-
-
-When installing the latest source from github, you also need to
-download the country grid:
-
-
-    wget -O data/country_osm_grid.sql.gz http://www.nominatim.org/data/country_grid.sql.gz
-
-
-The code must be built in a separate directory. Create this directory,
-then configure and build Nominatim in there:
-
-    mkdir build
-    cd build
-    cmake $USERHOME/Nominatim
-    make
-
-You need to create a minimal configuration file that tells nominatim
-where it is located on the webserver:
-
-```
-tee settings/local.php << EOF
-<?php
- @define('CONST_Website_BaseURL', '/nominatim/');
-EOF
-```
-
-
-Nominatim is now ready to use. Continue with
-[importing a database from OSM data](Import-and-Update.md).

docs/Installation.md

@@ -1,154 +0,0 @@
-Nominatim installation
-======================
-
-This page contains generic installation instructions for Nominatim and its
-prerequisites. There are also step-by-step instructions available for
-the following operating systems:
-
-  * [Ubuntu 16.04](Install-on-Ubuntu-16.md)
-  * [CentOS 7.2](Install-on-Centos-7.md)
-
-These OS-specific instructions can also be found in executable form
-in the `vagrant/` directory.
-
-Prerequisites
--------------
-
-### Software
-
-For compiling:
-
-  * [cmake](https://cmake.org/)
-  * [libxml2](http://xmlsoft.org/)
-  * a recent C++ compiler
-
-Nominatim comes with its own version of osm2pgsql. See the
-[osm2pgsql README](../osm2pgsql/README.md) for additional dependencies
-required for compiling osm2pgsql.
-
-For running tests:
-
-  * [behave](http://pythonhosted.org/behave/)
-  * [Psycopg2](http://initd.org/psycopg)
-  * [nose](https://nose.readthedocs.io)
-  * [phpunit](https://phpunit.de)
-
-For running Nominatim:
-
-  * [PostgreSQL](http://www.postgresql.org) (9.1 or later)
-  * [PostGIS](http://postgis.refractions.net) (2.0 or later)
-  * [PHP](http://php.net) (5.4 or later)
-  * PHP-pgsql
-  * PHP-intl (bundled with PHP)
-  * [PEAR::DB](http://pear.php.net/package/DB)
-  * a webserver (apache or nginx are recommended)
-
-For running continuous updates:
-
-  * [pyosmium](http://osmcode.org/pyosmium/)
-
-### Hardware
-
-A minimum of 2GB of RAM is required or installation will fail. For a full
-planet import 32GB of RAM or more strongly are recommended.
-
-For a full planet install you will need about 500GB of hard disk space (as of
-June 2016, take into account that the OSM database is growing fast). SSD disks
-will help considerably to speed up import and queries.
-
-On a 6-core machine with 32GB RAM and SSDs the import of a full planet takes
-a bit more than 2 days. Without SSDs 7-8 days are more realistic.
-
-
-Setup of the server
--------------------
-
-### PostgreSQL tuning
-
-You might want to tune your PostgreSQL installation so that the later steps
-make best use of your hardware. You should tune the following parameters in
-your `postgresql.conf` file.
-
-    shared_buffers (2GB)
-    maintenance_work_mem (10GB)
-    work_mem (50MB)
-    effective_cache_size (24GB)
-    synchronous_commit = off
-    checkpoint_segments = 100 # only for postgresql <= 9.4
-    checkpoint_timeout = 10min
-    checkpoint_completion_target = 0.9
-
-The numbers in brackets behind some parameters seem to work fine for
-32GB RAM machine. Adjust to your setup.
-
-For the initial import, you should also set:
-
-    fsync = off
-    full_page_writes = off
-
-Don't forget to reenable them after the initial import or you risk database
-corruption. Autovacuum must not be switched off because it ensures that the
-tables are frequently analysed.
-
-### Webserver setup
-
-The `website/` directory in the build directory contains the configured
-website. Include the directory into your webbrowser to serve php files
-from there.
-
-#### Configure for use with Apache
-
-Make sure your Apache configuration contains the required permissions for the
-directory and create an alias:
-
-    <Directory "/srv/nominatim/build/website">
-      Options FollowSymLinks MultiViews
-      AddType text/html   .php
-      DirectoryIndex search.php
-      Require all granted
-    </Directory>
-    Alias /nominatim /srv/nominatim/build/website
-
-`/srv/nominatim/build` should be replaced with the location of your
-build directory.
-
-After making changes in the apache config you need to restart apache.
-The website should now be available on http://localhost/nominatim.
-
-#### Configure for use with Nginx
-
-Use php-fpm as a deamon for serving PHP cgi. Install php-fpm together with nginx.
-
-By default php listens on a network socket. If you want it to listen to a
-Unix socket instead, change the pool configuration (`pool.d/www.conf`) as
-follows:
-
-    ; Comment out the tcp listener and add the unix socket
-    ;listen = 127.0.0.1:9000
-    listen = /var/run/php5-fpm.sock
-
-    ; Ensure that the daemon runs as the correct user
-    listen.owner = www-data
-    listen.group = www-data
-    listen.mode = 0666
-
-Tell nginx that php files are special and to fastcgi_pass to the php-fpm
-unix socket by adding the location definition to the default configuration.
-
-    root /srv/nominatim/build/website;
-    index search.php index.html;
-    location ~ [^/]\.php(/|$) {
-        fastcgi_split_path_info ^(.+?\.php)(/.*)$;
-        if (!-f $document_root$fastcgi_script_name) {
-            return 404;
-        }
-        fastcgi_pass unix:/var/run/php5-fpm.sock;
-        fastcgi_index search.php;
-        include fastcgi.conf;
-    }
-
-Restart the nginx and php5-fpm services and the website should now be available
-on http://localhost/.
-
-
-Now continue with [importing the database](Import-and-Update.md).

docs/admin/Advanced-Installations.md

@@ -0,0 +1,170 @@
+# Advanced installations
+
+This page contains instructions for setting up multiple countries in 
+your Nominatim database. It is assumed that you have already successfully
+installed the Nominatim software itself, if not return to the 
+[installation page](Installation.md).
+
+## Importing with a database user without superuser rights
+
+Nominatim usually creates its own PostgreSQL database at the beginning of the
+import process. This makes usage easier for the user but means that the
+database user doing the import needs the appropriate rights.
+
+If you prefer to run the import with a database user with limited rights,
+you can do so by changing the import process as follows:
+
+1. Run the command for database preparation with a database user with
+   superuser rights. For example, to use a db user 'dbadmin' for a
+   database 'nominatim', execute:
+
+   ```
+   NOMINATIM_DATABASE_DSN="pgsql:dbname=nominatim;user=dbadmin" nominatim import --prepare-database
+   ```
+
+2. Grant the import user the right to create tables. For example, foe user 'import-user':
+
+   ```
+   psql -d nominatim -c 'GRANT CREATE ON SCHEMA public TO "import-user"'
+   ```
+
+3. Now run the reminder of the import with the import user:
+
+   ```
+   NOMINATIM_DATABASE_DSN="pgsql:dbname=nominatim;user=import-user" nominatim import --continue import-from-file --osm-file file.pbf
+   ```
+
+## Importing multiple regions (without updates)
+
+To import multiple regions in your database you can simply give multiple
+OSM files to the import command:
+
+```
+nominatim import --osm-file file1.pbf --osm-file file2.pbf
+```
+
+If you already have imported a file and want to add another one, you can
+use the add-data function to import the additional data as follows:
+
+```
+nominatim add-data --file <FILE>
+nominatim refresh --postcodes
+nominatim index -j <NUMBER OF THREADS>
+```
+
+Please note that adding additional data is always significantly slower than
+the original import.
+
+## Importing multiple regions (with updates)
+
+If you want to import multiple regions _and_ be able to keep them up-to-date
+with updates, then you can use the scripts provided in the `utils` directory.
+
+These scripts will set up an `update` directory in your project directory,
+which has the following structure:
+
+```bash
+update
+ ├── europe
+ │    ├── andorra
+ │    │    └── sequence.state
+ │    └── monaco
+ │         └── sequence.state
+ └── tmp
+      └── europe
+           ├── andorra-latest.osm.pbf
+           └── monaco-latest.osm.pbf
+
+```
+
+The `sequence.state` files contain the sequence ID for each region. They will
+be used by pyosmium to get updates. The `tmp` folder is used for import dump and
+can be deleted once the import is complete.
+
+
+### Setting up multiple regions
+
+Create a project directory as described for the
+[simple import](Import.md#creating-the-project-directory). If necessary,
+you can also add an `.env` configuration with customized options. In particular,
+you need to make sure that `NOMINATIM_REPLICATION_UPDATE_INTERVAL` and
+`NOMINATIM_REPLICATION_RECHECK_INTERVAL` are set according to the update
+interval of the extract server you use.
+
+Copy the scripts `utils/import_multiple_regions.sh` and `utils/update_database.sh`
+into the project directory.
+
+Now customize both files as per your requirements
+
+1. List of countries. e.g.
+
+        COUNTRIES="europe/monaco europe/andorra"
+
+2. URL to the service providing the extracts and updates. eg:
+
+        BASEURL="https://download.geofabrik.de"
+        DOWNCOUNTRYPOSTFIX="-latest.osm.pbf"
+
+5. Followup in the update script can be set according to your installation.
+   E.g. for Photon,
+
+        FOLLOWUP="curl http://localhost:2322/nominatim-update"
+
+    will handle the indexing.
+
+
+To start the initial import, change into the project directory and run
+
+```
+    bash import_multiple_regions.sh
+```
+
+### Updating the database
+
+Change into the project directory and run the following command:
+
+    bash update_database.sh
+
+This will get diffs from the replication server, import diffs and index
+the database. The default replication server in the
+script ([Geofabrik](https://download.geofabrik.de)) provides daily updates.
+
+## Using an external PostgreSQL database
+
+You can install Nominatim using a database that runs on a different server.
+Simply point the configuration variable `NOMINATIM_DATABASE_DSN` to the
+server and follow the standard import documentation.
+
+The import will be faster, if the import is run directly from the database
+machine. You can easily switch to a different machine for the query frontend
+after the import.
+
+## Moving the database to another machine
+
+For some configurations it may be useful to run the import on one machine, then
+move the database to another machine and run the Nominatim service from there.
+For example, you might want to use a large machine to be able to run the import
+quickly but only want a smaller machine for production because there is not so
+much load. Or you might want to do the import once and then replicate the
+database to many machines.
+
+The important thing to keep in mind when transferring the Nominatim installation
+is that you need to transfer the database _and the project directory_. Both
+parts are essential for your installation.
+
+The Nominatim database can be transferred using the `pg_dump`/`pg_restore` tool.
+Make sure to use the same version of PostgreSQL and PostGIS on source and
+target machine.
+
+!!! note
+    Before creating a dump of your Nominatim database, consider running
+    `nominatim freeze` first. Your database looses the ability to receive further
+    data updates but the resulting database is only about a third of the size
+    of a full database.
+
+Next install nominatim-api on the target machine by following the standard
+installation instructions. Again, make sure to use the same version as the
+source machine.
+
+Create a project directory on your destination machine and set up the `.env`
+file to match the configuration on the source machine. That's all.

docs/admin/Deployment-Python.md

@@ -0,0 +1,152 @@
+# Deploying the Nominatim Python frontend
+
+Nominatim can be run as a Python-based
+[ASGI web application](https://asgi.readthedocs.io/en/latest/). You have the
+choice between [Falcon](https://falcon.readthedocs.io/en/stable/)
+and [Starlette](https://www.starlette.io/) as the ASGI framework.
+
+This section gives a quick overview on how to configure Nginx to serve
+Nominatim. Please refer to the documentation of
+[Nginx](https://nginx.org/en/docs/) for background information on how
+to configure it.
+
+### Installing the required packages
+
+!!! warning
+    ASGI support in gunicorn requires at least version 25.0. If you need
+    to work with an older version of gunicorn, please refer to
+    [older Nominatim deployment documentation](https://nominatim.org/release-docs/5.2/admin/Deployment-Python/)
+    to learn how to run gunicorn with uvicorn.
+
+The Nominatim frontend is best run from its own virtual environment. If
+you have already created one for the database backend during the
+[installation](Installation.md#building-nominatim), you can use that. Otherwise
+create one now with:
+
+```sh
+sudo apt-get install virtualenv
+virtualenv /srv/nominatim-venv
+```
+
+The Nominatim frontend is contained in the 'nominatim-api' package. To
+install directly from the source tree run:
+
+```sh
+cd Nominatim
+/srv/nominatim-venv/bin/pip install packaging/nominatim-api
+```
+
+The recommended way to deploy a Python ASGI application is to run
+the [gunicorn](https://gunicorn.org/) HTTP server. We use
+Falcon here as the web framework.
+
+Add the necessary packages to your virtual environment:
+
+``` sh
+/srv/nominatim-venv/bin/pip install falcon gunicorn
+```
+
+### Setting up Nominatim as a systemd job
+
+!!! Note
+    These instructions assume your Nominatim project directory is
+    located in `/srv/nominatim-project`. If you have put it somewhere else,
+    you need to adjust the commands and configuration accordingly.
+
+Next you need to set up the service that runs the Nominatim frontend. This is
+easiest done with a systemd job.
+
+First you need to tell systemd to create a socket file to be used by
+gunicorn. Create the following file `/etc/systemd/system/nominatim.socket`:
+
+``` systemd
+[Unit]
+Description=Gunicorn socket for Nominatim
+
+[Socket]
+ListenStream=/run/nominatim.sock
+SocketUser=www-data
+
+[Install]
+WantedBy=multi-user.target
+```
+
+Now you can add the systemd service for Nominatim itself.
+Create the following file `/etc/systemd/system/nominatim.service`:
+
+``` systemd
+[Unit]
+Description=Nominatim running as a gunicorn application
+After=network.target
+Requires=nominatim.socket
+
+[Service]
+Type=simple
+User=www-data
+Group=www-data
+WorkingDirectory=/srv/nominatim-project
+ExecStart=/srv/nominatim-venv/bin/gunicorn -b unix:/run/nominatim.sock -w 4 --worker-class asgi --protocol uwsgi --worker-connections 1000 "nominatim_api.server.falcon.server:run_wsgi()"
+ExecReload=/bin/kill -s HUP $MAINPID
+PrivateTmp=true
+TimeoutStopSec=5
+KillMode=mixed
+
+[Install]
+WantedBy=multi-user.target
+```
+
+This sets up gunicorn with 4 workers (`-w 4` in ExecStart). Each worker runs
+its own Python process using
+[`NOMINATIM_API_POOL_SIZE`](../customize/Settings.md#nominatim_api_pool_size)
+connections to the database to serve requests in parallel. The parameter
+`--worker-connections` restricts how many requests gunicorn will queue for
+each worker. This can help distribute work better when the server is under
+high load.
+
+Make the new services known to systemd and start it:
+
+``` sh
+sudo systemctl daemon-reload
+sudo systemctl enable nominatim.socket
+sudo systemctl start nominatim.socket
+sudo systemctl enable nominatim.service
+sudo systemctl start nominatim.service
+```
+
+This sets the service up so that Nominatim is automatically started
+on reboot.
+
+### Configuring nginx
+
+To make the service available to the world, you need to proxy it through
+nginx. We use the binary uwsgi protocol to speed up communication
+between nginx and gunicorn. Add the following definition to the default
+configuration:
+
+``` nginx
+upstream nominatim_service {
+  server unix:/run/nominatim.sock fail_timeout=0;
+}
+
+server {
+    listen 80;
+    listen [::]:80;
+
+    root /var/www/html;
+    index /search;
+
+    location / {
+        uwsgi_pass nominatim_service;
+        include uwsgi_params;
+    }
+}
+```
+
+Reload nginx with
+
+```
+sudo systemctl reload nginx
+```
+
+and you should be able to see the status of your server under
+`http://localhost/status`.

docs/admin/Faq.md

@@ -0,0 +1,119 @@
+# Troubleshooting Nominatim Installations
+
+## Installation Issues
+
+### Can a stopped/killed import process be resumed?
+
+"I accidentally killed the import process after it has been running for many hours. Can it be resumed?"
+
+It is possible if the import already got to the indexing stage.
+Check the last line of output that was logged before the process
+was killed. If it looks like this:
+
+
+    Done 844 in 13 @ 64.923080 per second - Rank 26 ETA (seconds): 7.886255
+
+then you can resume with the following command:
+
+```sh
+nominatim import --continue indexing
+```
+
+If the reported rank is 26 or higher, you can also safely add `--index-noanalyse`.
+
+
+### PostgreSQL crashed "invalid page in block"
+
+Usually serious problem, can be a hardware issue, not all data written to disc
+for example. Check PostgreSQL log file and search PostgreSQL issues/mailing
+list for hints.
+
+If it happened during index creation you can try rerunning the step with
+
+```sh
+nominatim import --continue indexing
+```
+
+Otherwise it's best to start the full setup from the beginning.
+
+
+### I see the error: "ERROR: mmap (remap) failed"
+
+This may be a simple out-of-memory error. Try reducing the memory used
+for `--osm2pgsql-cache`. Also make sure that overcommitting memory is
+allowed: `cat /proc/sys/vm/overcommit_memory` should print 0 or 1.
+
+If you are using a flatnode file, then it may also be that the underlying
+filesystem does not fully support 'mmap'. A notable candidate is virtualbox's
+vboxfs.
+
+### nominatim UPDATE failed: ERROR: buffer 179261 is not owned by resource owner Portal
+
+Several users [reported this](https://github.com/openstreetmap/Nominatim/issues/1168)
+during the initial import of the database. It's
+something PostgreSQL internal Nominatim doesn't control. And PostgreSQL forums
+suggest it's threading related but definitely some kind of crash of a process.
+Users reported either rebooting the server, different hardware or just trying
+the import again worked.
+
+### The website shows: "Could not get word tokens"
+
+The server cannot access your database. Add `&debug=1` to your URL
+to get the full error message.
+
+
+### Website reports "DB Error: insufficient permissions"
+
+The user the webserver, e.g. Apache, runs under needs to have access to the
+Nominatim database. You can find the user like
+[this](https://serverfault.com/questions/125865/finding-out-what-user-apache-is-running-as),
+for default Ubuntu operating system for example it's `www-data`.
+
+1. Repeat the `createuser` step of the installation instructions.
+
+2. Give the user permission to existing tables
+
+```
+   GRANT usage ON SCHEMA public TO "www-data";
+   GRANT SELECT ON ALL TABLES IN SCHEMA public TO "www-data";
+```
+
+### Setup fails with "DB Error: extension not found"
+
+Make sure you have the PostgreSQL extensions "hstore" and "postgis" installed.
+See the installation instructions for a full list of required packages.
+
+
+### UnicodeEncodeError: 'ascii' codec can't encode character
+
+Make sure that the operating system's locale is UTF-8. With some prebuilt
+images (e.g. LXC containers from Proxmox, see
+[discussion](https://github.com/osm-search/Nominatim/discussions/2343)) or
+images that optimize for size it might be missing.
+
+On Ubuntu you can check the locale is installed:
+
+```
+   grep UTF-8 /etc/default/locale
+```
+
+And install it using
+
+```
+   dpkg-reconfigure locales
+```
+
+### I forgot to delete the flatnodes file before starting an import.
+
+That's fine. For each import the flatnodes file get overwritten.
+See [https://help.openstreetmap.org/questions/52419/nominatim-flatnode-storage](https://help.openstreetmap.org/questions/52419/nominatim-flatnode-storage)
+for more information.
+
+
+## Running your own instance
+
+### Can I import negative OSM ids into Nominatim?
+
+No, negative IDs are no longer supported by osm2pgsql. You can use
+large 64-bit IDs that are guaranteed not to clash with OSM IDs. However,
+you will not able to use a flatnode file with them.

docs/admin/Import.md

@@ -0,0 +1,316 @@
+# Importing the Database
+
+The following instructions explain how to create a Nominatim database
+from an OSM planet file. It is assumed that you have already successfully
+installed the Nominatim software itself and the `nominatim` tool can be found
+in your `PATH`. If this is not the case, return to the
+[installation page](Installation.md).
+
+## Creating the project directory
+
+Before you start the import, you should create a project directory for your
+new database installation. This directory receives all data that is related
+to a single Nominatim setup: configuration, extra data, etc. Create a project
+directory apart from the Nominatim software and change into the directory:
+
+```
+mkdir ~/nominatim-project
+cd ~/nominatim-project
+```
+
+In the following, we refer to the project directory as `$PROJECT_DIR`. To be
+able to copy&paste instructions, you can export the appropriate variable:
+
+```
+export PROJECT_DIR=~/nominatim-project
+```
+
+The Nominatim tool assumes per default that the current working directory is
+the project directory but you may explicitly state a different directory using
+the `--project-dir` parameter. The following instructions assume that you run
+all commands from the project directory.
+
+!!! tip "Migration Tip"
+
+    Nominatim used to be run directly from the build directory until version 3.6.
+    Essentially, the build directory functioned as the project directory
+    for the database installation. This setup still works and can be useful for
+    development purposes. It is not recommended anymore for production setups.
+    Create a project directory that is separate from the Nominatim software.
+
+### Configuration setup in `.env`
+
+The Nominatim server can be customized via an `.env` configuration file in the 
+project directory. This is a file in [dotenv](https://github.com/theskumar/python-dotenv)
+format which looks the same as variable settings in a standard shell environment.
+You can also set the same configuration via environment variables. All
+settings have a `NOMINATIM_` prefix to avoid conflicts with other environment
+variables.
+
+There are lots of configuration settings you can tweak. A full reference
+can be found in the chapter [Configuration Settings](../customize/Settings.md).
+Most should have a sensible default.
+
+#### Flatnode files
+
+If you plan to import a large dataset (e.g. Europe, North America, planet),
+you should also enable flatnode storage of node locations. With this
+setting enabled, node coordinates are stored in a simple file instead
+of the database. This will save you import time and disk storage.
+Add to your `.env`:
+
+    NOMINATIM_FLATNODE_FILE="/path/to/flatnode.file"
+
+Replace the second part with a suitable path on your system and make sure
+the directory exists. There should be at least 75GB of free space.
+
+## Downloading additional data
+
+### Wikipedia/Wikidata rankings
+
+Wikipedia can be used as an optional auxiliary data source to help indicate
+the importance of OSM features. Nominatim will work without this information
+but it will improve the quality of the results if this is installed.
+This data is available as a binary download. Put it into your project directory:
+
+    cd $PROJECT_DIR
+    wget https://nominatim.org/data/wikimedia-importance.csv.gz
+    wget -O secondary_importance.sql.gz https://nominatim.org/data/wikimedia-secondary-importance.sql.gz
+
+The files are about 400MB and add around 4GB to the Nominatim database. For
+more information about importance,
+see [Importance Customization](../customize/Importance.md).
+
+!!! tip
+    If you forgot to download the wikipedia rankings, then you can
+    also add importances after the import. Download the SQL files, then
+    run `nominatim refresh --wiki-data --secondary-importance --importance`.
+    Updating importances for a planet will take a couple of hours.
+
+### External postcodes
+
+Nominatim can use postcodes from an external source to improve searching with
+postcodes. We provide precomputed postcodes sets for the US (using TIGER data)
+and the UK (using the [CodePoint OpenData set](https://osdatahub.os.uk/downloads/open/CodePointOpen).
+This data can be optionally downloaded into the project directory:
+
+    cd $PROJECT_DIR
+    wget https://nominatim.org/data/gb_postcodes.csv.gz
+    wget https://nominatim.org/data/us_postcodes.csv.gz
+
+You can also add your own custom postcode sources, see
+[Customization of postcodes](../customize/Postcodes.md).
+
+## Choosing the data to import
+
+In its default setup Nominatim is configured to import the full OSM data
+set for the entire planet. Such a setup requires a powerful machine with
+at least 64GB of RAM and around 900GB of SSD hard disks. Depending on your
+use case there are various ways to reduce the amount of data imported. This
+section discusses these methods. They can also be combined.
+
+### Using an extract
+
+If you only need geocoding for a smaller region, then precomputed OSM extracts
+are a good way to reduce the database size and import time.
+[Geofabrik](https://download.geofabrik.de) offers extracts for most countries.
+They even have daily updates which can be used with the update process described
+[in the next section](Update.md). There are also
+[other providers for extracts](https://wiki.openstreetmap.org/wiki/Planet.osm#Downloading).
+
+Please be aware that some extracts are not cut exactly along the country
+boundaries. As a result some parts of the boundary may be missing which means
+that Nominatim cannot compute the areas for some administrative areas.
+
+### Dropping Data Required for Dynamic Updates
+
+About half of the data in Nominatim's database is not really used for serving
+the API. It is only there to allow the data to be updated from the latest
+changes from OSM. For many uses these dynamic updates are not really required.
+If you don't plan to apply updates, you can run the import with the
+`--no-updates` parameter. This will drop the dynamic part of the database as
+soon as it is not required anymore.
+
+You can also drop the dynamic part later using the following command:
+
+```
+nominatim freeze
+```
+
+Note that you still need to provide for sufficient disk space for the initial
+import. So this option is particularly interesting if you plan to transfer the
+database or reuse the space later.
+
+!!! warning
+    The data structure for updates are also required when adding additional data
+    after the import, for example [TIGER housenumber data](../customize/Tiger.md).
+    If you plan to use those, you must not use the `--no-updates` parameter.
+    Do a normal import, add the external data and once you are done with
+    everything run `nominatim freeze`.
+
+
+### Reverse-only Imports
+
+If you only want to use the Nominatim database for reverse lookups or
+if you plan to use the installation only for exports to a
+[photon](https://photon.komoot.io/) database, then you can set up a database
+without search indexes. Add `--reverse-only` to your setup command above.
+
+This saves about 5% of disk space, import time won't be significant faster.
+
+### Filtering Imported Data
+
+Nominatim normally sets up a full search database containing administrative
+boundaries, places, streets, addresses and POI data. There are also other
+import styles available which only read selected data:
+
+* **admin**
+  Only import administrative boundaries and places.
+* **street**
+  Like the admin style but also adds streets.
+* **address**
+  Import all data necessary to compute addresses down to house number level.
+* **full**
+  Default style that also includes points of interest.
+* **extratags**
+  Like the full style but also adds most of the OSM tags into the extratags
+  column.
+
+The style can be changed with the configuration `NOMINATIM_IMPORT_STYLE`.
+
+To give you an idea of the impact of using the different styles, the table
+below gives rough estimates of the final database size after import of a
+2020 planet and after using the `--drop` option. It also shows the time
+needed for the import on a machine with 64GB RAM, 4 CPUS and NVME disks.
+Note that the given sizes are just an estimate meant for comparison of
+style requirements. Your planet import is likely to be larger as the
+OSM data grows with time.
+
+style     | Import time  |  DB size   |  after drop
+----------|--------------|------------|------------
+admin     |    4h        |  215 GB    |   20 GB
+street    |   22h        |  440 GB    |  185 GB
+address   |   36h        |  545 GB    |  260 GB
+full      |   54h        |  640 GB    |  330 GB
+extratags |   54h        |  650 GB    |  340 GB
+
+You can also customize the styles further.
+A [description of the style format](../customize/Import-Styles.md)
+can be found in the customization guide.
+
+## Initial import of the data
+
+!!! danger "Important"
+    First try the import with a small extract, for example from
+    [Geofabrik](https://download.geofabrik.de).
+
+Download the data to import. Then issue the following command
+from the **project directory** to start the import:
+
+```sh
+nominatim import --osm-file <data file> 2>&1 | tee setup.log
+```
+
+The **project directory** is the one that you have set up at the beginning.
+See [creating the project directory](#creating-the-project-directory).
+
+### Notes on full planet imports
+
+Even on a perfectly configured machine
+the import of a full planet takes around 2 days. Once you see messages
+with `Rank .. ETA` appear, the indexing process has started. This part takes
+the most time. There are 30 ranks to process. Rank 26 and 30 are the most complex.
+They take each about a third of the total import time. If you have not reached
+rank 26 after two days of import, it is worth revisiting your system
+configuration as it may not be optimal for the import.
+
+### Notes on memory usage
+
+In the first step of the import Nominatim uses [osm2pgsql](https://osm2pgsql.org)
+to load the OSM data into the PostgreSQL database. This step is very demanding
+in terms of RAM usage. osm2pgsql and PostgreSQL are running in parallel at 
+this point. PostgreSQL blocks at least the part of RAM that has been configured
+with the `shared_buffers` parameter during
+[PostgreSQL tuning](Installation.md#tuning-the-postgresql-database)
+and needs some memory on top of that. osm2pgsql needs at least 2GB of RAM for
+its internal data structures, potentially more when it has to process very large
+relations. In addition it needs to maintain a cache for node locations. The size
+of this cache can be configured with the parameter `--osm2pgsql-cache`.
+
+When importing with a flatnode file, it is best to disable the node cache
+completely and leave the memory for the flatnode file. Nominatim will do this
+by default, so you do not need to configure anything in this case.
+
+For imports without a flatnode file, set `--osm2pgsql-cache` approximately to
+the size of the OSM pbf file you are importing. The size needs to be given in
+MB. Make sure you leave enough RAM for PostgreSQL and osm2pgsql as mentioned
+above. If the system starts swapping or you are getting out-of-memory errors,
+reduce the cache size or even consider using a flatnode file.
+
+
+### Testing the installation
+
+Run this script to verify that all required tables and indices got created
+successfully.
+
+```sh
+nominatim admin --check-database
+```
+
+If you have installed the `nominatim-api` package, then you can try out
+your installation by executing a simple query on the command line:
+
+``` sh
+nominatim search --query Berlin
+```
+
+or, when you have a reverse-only installation:
+
+``` sh
+nominatim reverse --lat 51 --lon 45
+```
+
+If you want to run Nominatim as a service, make sure you have installed
+the right packages as per [Installation](Installation.md#software).
+
+#### Testing the Python frontend
+
+To run the test server against the Python frontend, you must choose a
+web framework to use, either starlette or falcon. Make sure the appropriate
+packages are installed. Then run
+
+``` sh
+nominatim serve
+```
+
+or, if you prefer to use Starlette instead of Falcon as webserver,
+
+``` sh
+nominatim serve --engine starlette
+```
+
+Go to `http://localhost:8088/status` and you should see the message `OK`.
+You can also run a search query, e.g. `http://localhost:8088/search?q=Berlin`
+or, for reverse-only installations a reverse query,
+e.g. `http://localhost:8088/reverse?lat=27.1750090510034&lon=78.04209025`.
+
+Do not use this test server in production.
+To run Nominatim via webservers like Apache or nginx, please continue reading
+[Deploy the Python frontend](Deployment-Python.md).
+
+
+## Enabling search by category phrases
+
+To be able to search for places by their type using
+[special phrases](https://wiki.openstreetmap.org/wiki/Nominatim/Special_Phrases)
+you also need to import these key phrases like this:
+
+```sh
+nominatim special-phrases --import-from-wiki
+```
+
+Note that this command downloads the phrases from the wiki link above. You
+need internet access for the step.
+
+You can also import special phrases from a csv file, for more 
+information please see the [Customization part](../customize/Special-Phrases.md).

docs/admin/Installation.md

@@ -0,0 +1,147 @@
+# Basic Installation
+
+This page contains generic installation instructions for Nominatim and its
+prerequisites. There are also step-by-step instructions available for
+the following operating systems:
+
+  * [Ubuntu 24.04](Install-on-Ubuntu-24.md)
+  * [Ubuntu 22.04](Install-on-Ubuntu-22.md)
+
+These OS-specific instructions can also be found in executable form
+in the `vagrant/` directory.
+
+Users have created instructions for other frameworks. We haven't tested those
+and can't offer support.
+
+  * [Docker](https://github.com/mediagis/nominatim-docker)
+  * [Docker on Kubernetes](https://github.com/peter-evans/nominatim-k8s)
+  * [Kubernetes with Helm](https://github.com/robjuz/helm-charts/blob/master/charts/nominatim/README.md)
+  * [Ansible](https://github.com/synthesio/infra-ansible-nominatim)
+
+## Prerequisites
+
+### Software
+
+For running Nominatim:
+
+  * [PostgreSQL](https://www.postgresql.org) (12+ will work, 13+ strongly recommended)
+  * [PostGIS](https://postgis.net) (3.0+ will work, 3.2+ strongly recommended)
+  * [osm2pgsql](https://osm2pgsql.org) (1.8+)
+  * [Python 3](https://www.python.org/) (3.9+)
+
+Furthermore the following Python libraries are required:
+
+  * [Psycopg3](https://www.psycopg.org)
+  * [Python Dotenv](https://github.com/theskumar/python-dotenv)
+  * [psutil](https://github.com/giampaolo/psutil)
+  * [Jinja2](https://palletsprojects.com/p/jinja/)
+  * [PyICU](https://pypi.org/project/PyICU/)
+  * [PyYaml](https://pyyaml.org/) (5.1+)
+  * [mwparserfromhell](https://github.com/earwig/mwparserfromhell/)
+
+These will be installed automatically when using pip installation.
+
+For running continuous updates:
+
+  * [pyosmium](https://osmcode.org/pyosmium/)
+
+For running the Python frontend:
+
+  * [SQLAlchemy](https://www.sqlalchemy.org/) (1.4.31+ with greenlet support)
+  * [asyncpg](https://magicstack.github.io/asyncpg) (0.8+, only when using SQLAlchemy < 2.0)
+  * one of the following web frameworks:
+    * [falcon](https://falconframework.org/) (3.0+)
+    * [starlette](https://www.starlette.io/)
+  * [uvicorn](https://www.uvicorn.org/)
+
+For dependencies for running tests and building documentation, see
+the [Development section](../develop/Development-Environment.md).
+
+### Hardware
+
+A minimum of 2GB of RAM is required or installation will fail. For a full
+planet import 128GB of RAM or more are strongly recommended. Do not report
+out of memory problems if you have less than 64GB RAM.
+
+For a full planet install you will need at least 1TB of hard disk space.
+Take into account that the OSM database is growing fast.
+Fast disks are essential. Using NVME disks is recommended.
+
+Even on a well configured machine the import of a full planet takes
+around 2.5 days. When using traditional SSDs, 4-5 days are more realistic.
+
+## Tuning the PostgreSQL database
+
+You might want to tune your PostgreSQL installation so that the later steps
+make best use of your hardware. You should tune the following parameters in
+your `postgresql.conf` file.
+
+    shared_buffers = 2GB
+    maintenance_work_mem = (10GB)
+    autovacuum_work_mem = 2GB
+    work_mem = (50MB)
+    synchronous_commit = off
+    max_wal_size = 1GB
+    checkpoint_timeout = 60min
+    checkpoint_completion_target = 0.9
+    random_page_cost = 1.0
+    wal_level = minimal
+    max_wal_senders = 0
+
+The numbers in brackets behind some parameters seem to work fine for
+128GB RAM machine. Adjust to your setup. A higher number for `max_wal_size`
+means that PostgreSQL needs to run checkpoints less often but it does require
+the additional space on your disk.
+
+Autovacuum must not be switched off because it ensures that the
+tables are frequently analysed. If your machine has very little memory,
+you might consider setting:
+
+    autovacuum_max_workers = 1
+
+and even reduce `autovacuum_work_mem` further. This will reduce the amount
+of memory that autovacuum takes away from the import process.
+
+## Installing the latest release
+
+Nominatim is easiest installed directly from Pypi. Make sure you have installed
+osm2pgsql, PostgreSQL/PostGIS and libICU together with its header files.
+
+Then you can install Nominatim with:
+
+    pip install nominatim-db nominatim-api
+
+## Downloading and building Nominatim
+
+### Downloading the latest release
+
+You can download the [latest release from nominatim.org](https://nominatim.org/downloads/).
+The release contains all necessary files. Just unpack it.
+
+### Downloading the latest development version
+
+If you want to install latest development version from github:
+
+```
+git clone https://github.com/osm-search/Nominatim.git
+```
+
+The development version does not include the country grid. Download it separately:
+
+```
+wget -O Nominatim/data/country_osm_grid.sql.gz https://nominatim.org/data/country_grid.sql.gz
+```
+
+### Building Nominatim
+
+Nominatim is easiest to run from its own virtual environment. To create one, run:
+
+    sudo apt-get install virtualenv
+    virtualenv /srv/nominatim-venv
+
+To install Nominatim directly from the source tree into the virtual environment, run:
+
+    /srv/nominatim-venv/bin/pip install packaging/nominatim-{db,api}
+
+
+Now continue with [importing the database](Import.md).

docs/admin/Maintenance.md

@@ -0,0 +1,72 @@
+This chapter describes the various operations the Nominatim database administrator
+may use to clean and maintain the database. None of these operations is mandatory
+but they may help improve the performance and accuracy of results.
+
+
+## Updating postcodes
+
+Command: `nominatim refresh --postcodes`
+
+Postcode centroids (aka 'calculated postcodes') are generated by looking at all
+postcodes of a country, grouping them and calculating the geometric centroid.
+There is currently no logic to deal with extreme outliers (typos or other
+mistakes in OSM data). There is also no check if a postcodes adheres to a
+country's format, e.g. if Swiss postcodes are 4 digits.
+
+When running regular updates, postcodes results can be improved by running
+this command on a regular basis. Note that only the postcode table and the
+postcode search terms are updated. The postcode that is assigned to each place
+is only updated when the place is updated.
+
+The command takes around 70min to run on the planet and needs ca. 40GB of
+temporary disk space.
+
+
+## Updating word counts
+
+Command: `nominatim refresh --word-counts`
+
+Nominatim keeps frequency statistics about all search terms it indexes. These
+statistics are currently used to optimise queries to the database. Thus better
+statistics mean better performance. Word counts are created once after import
+and are usually sufficient even when running regular updates. You might want
+to rerun the statistics computation when adding larger amounts of new data,
+for example, when adding an additional country via `nominatim add-data`.
+
+
+## Forcing recomputation of places and areas
+
+Command: `nominatim refresh --data-object [NWR]<id> --data-area [NWR]<id>`
+
+When running replication updates, Nominatim tries to recompute the search
+and address information for all places that are affected by a change. But it
+needs to restrict the total number of changes to make sure it can keep up
+with the minutely updates. Therefore it will refrain from propagating changes
+that affect a lot of objects.
+
+The administrator may force an update of places in the database.
+`nominatim refresh --data-object` invalidates a single OSM object.
+`nominatim refresh --data-area` invalidates an OSM object and all dependent
+objects. That are usually the places that inside its area or around the
+center of the object. Both commands expect the OSM object as an argument
+of the form OSM type + OSM id. The type must be `N` (node), `W` (way) or
+`R` (relation).
+
+After invalidating the object, indexing must be run again. If continuous
+update are running in the background, the objects will be recomputed together
+with the next round of updates. Otherwise you need to run `nominatim index`
+to finish the recomputation.
+
+
+## Removing large deleted objects
+
+Command: `nominatim admin --clean-deleted <PostgreSQL Time Interval>`
+
+Nominatim refuses to delete very large areas because often these deletions are
+accidental and are reverted within hours. Instead the deletions are logged in
+the `import_polygon_delete` table and left to the administrator to clean up.
+
+To run this command you will need to pass a PostgreSQL time interval. For example to 
+delete any objects that have been deleted more than a month ago you would run:
+`nominatim admin --clean-deleted '1 month'`
+

docs/admin/Migration.md

@@ -0,0 +1,487 @@
+# Database Migrations
+
+Nominatim offers automatic migrations for versions 4.3+. Please follow
+the following steps:
+
+* Stop any updates that are potentially running
+* Update the backend: `pip install -U nominatim-db`
+* Go to your project directory and run `nominatim admin --migrate`
+* Update the frontend: `pip install -U nominatim-api`
+* (optionally) Restart updates
+
+Below you find additional migrations and hints about other structural and
+breaking changes. **Please read them before running the migration.**
+
+!!! note
+    If you are migrating from a version <4.3, you need to install 4.3
+    and migrate to 4.3 first. Then you can migrate to the current
+    version. It is strongly recommended to do a reimport instead.
+
+## 5.1.0 -> 5.2.0
+
+### Lua import style: required extratags removed
+
+Tags that are required by Nominatim as extratags are now always included
+independent of what is defined in the style. The line
+
+    flex.add_for_extratags('required')
+
+is no longer required in custom styles and will throw an error. Simply
+remove the line from your style.
+
+## 4.5.0 -> 5.0.0
+
+### PHP frontend removed
+
+The PHP frontend has been completely removed. Please switch to the Python
+frontend.
+
+Without the PHP code, the `nominatim refresh --website` command is no longer
+needed. It currently omits a warning and does otherwise nothing. It will be
+removed in later versions of Nominatim. So make sure you remove it from your
+scripts.
+
+### CMake building removed
+
+Nominatim can now only be installed via pip. Please follow the installation
+instructions for the current version to change to pip.
+
+### osm2pgsql no longer vendored in
+
+Nominatim no longer ships its own version of osm2pgsql. Please install a
+stock version of osm2pgsql from your distribution. See the
+[installation instruction for osm2pgsql](https://osm2pgsql.org/doc/install.html)
+for details. A minimum version of 1.8 is required. The current stable versions
+of Ubuntu and Debian already ship with an appropriate versions. For older
+installation, you may have to compile a newer osm2pgsql yourself.
+
+### Legacy tokenizer removed
+
+The `legacy` tokenizer is no longer enabled. This tokenizer has been superseded
+by the `ICU` tokenizer a long time ago. In the unlikely case that your database
+still uses the `legacy` tokenizer, you must reimport your database.
+
+### osm2pgsql style overhauled
+
+There are some fundamental changes to how customized osm2pgsql styles should
+be written. The changes are mostly backwards compatible, i.e. custom styles
+should still work with the new implementation. The only exception is a
+customization of the `process_tags()` function. This function is no longer
+considered public and neither are the helper functions used in it.
+They currently still work but will be removed at some point. If you have
+been making changes to `process_tags`, please review your style and try
+to switch to the new convenience functions.
+
+For more information on the changes, see the
+[pull request](https://github.com/osm-search/Nominatim/pull/3615)
+and read the new
+[customization documentation](https://nominatim.org/release-docs/latest/customize/Import-Styles/).
+
+## 4.4.0 -> 4.5.0
+
+### New structure for Python packages
+
+The nominatim Python package has been split into `nominatim-db` and `nominatim-api`.
+Any imports need to be adapted accordingly.
+
+If you are running the Python frontend, change the server module from
+`nominatim.server.falcon.server` to `nominatim_api.server.falcon.server`.
+
+If you are using the Nominatim library, all imports need to be changed
+from `nominatim.api.<module>` to `nominatim_api.<module>`.
+
+If you have written custom tokenizers or sanitizers, the appropriate modules
+are now found in `nominatim_db`.
+
+## 4.2.0 -> 4.3.0
+
+### New indexes for reverse lookup
+
+The reverse lookup algorithm has changed slightly to improve performance.
+This change needs a different index in the database. The required index
+will be automatically build during migration. Until the new index is available
+performance of the /reverse endpoint is significantly reduced. You should
+therefore either remove traffic from the machine before attempting a
+version update or create the index manually **before** starting the update
+using the following SQL:
+
+```sql
+CREATE INDEX IF NOT EXISTS idx_placex_geometry_reverse_lookupPlaceNode
+  ON placex USING gist (ST_Buffer(geometry, reverse_place_diameter(rank_search)))
+  WHERE rank_address between 4 and 25 AND type != 'postcode'
+    AND name is not null AND linked_place_id is null AND osm_type = 'N';
+```
+
+## 4.0.0 -> 4.1.0
+
+### ICU tokenizer is the new default
+
+Nominatim now installs the [ICU tokenizer](../customize/Tokenizers.md#icu-tokenizer)
+by default. This only has an effect on newly installed databases. When
+updating older databases, it keeps its installed tokenizer. If you still
+run with the legacy tokenizer, make sure to compile Nominatim with the
+PostgreSQL module, see [Installation](Installation.md#building-nominatim).
+
+### geocodejson output changed
+
+The `type` field of the geocodejson output has changed. It now contains
+the address class of the object instead of the value of the OSM tag. If
+your client has used the `type` field, switch them to read `osm_value`
+instead.
+
+## 3.7.0 -> 4.0.0
+
+### NOMINATIM_PHRASE_CONFIG removed
+
+Custom blacklist configurations for special phrases now need to be handed
+with the `--config` parameter to `nominatim special-phrases`. Alternatively
+you can put your custom configuration in the project directory in a file
+named `phrase-settings.json`.
+
+Version 3.8 also removes the automatic converter for the php format of
+the configuration in older versions. If you are updating from Nominatim < 3.7
+and still work with a custom `phrase-settings.php`, you need to manually
+convert it into a json format.
+
+### PHP utils removed
+
+The old PHP utils have now been removed completely. You need to switch to
+the appropriate functions of the nominatim  command line tool. See
+[Introducing `nominatim` command line tool](#introducing-nominatim-command-line-tool)
+below.
+
+## 3.6.0 -> 3.7.0
+
+### New format and name of configuration file
+
+The configuration for an import is now saved in a `.env` file in the project
+directory. This file follows the dotenv format. For more information, see
+the [installation chapter](Import.md#configuration-setup-in-env).
+
+To migrate to the new system, create a new project directory, add the `.env`
+file and port your custom configuration from `settings/local.php`. Most
+settings are named similar and only have received a `NOMINATIM_` prefix.
+Use the default settings in `settings/env.defaults` as a reference.
+
+### New location for data files
+
+External data files for Wikipedia importance, postcodes etc. are no longer
+expected to reside in the source tree by default. Instead they will be searched
+in the project directory. If you have an automated setup script you must
+either adapt the download location or explicitly set the location of the
+files to the old place in your `.env`.
+
+### Introducing `nominatim` command line tool
+
+The various php utilities have been replaced with a single `nominatim`
+command line tool. Make sure to adapt any scripts. There is no direct 1:1
+matching between the old utilities and the commands of nominatim CLI. The
+following list gives you a list of nominatim sub-commands that contain
+functionality of each script:
+
+* ./utils/setup.php: `import`, `freeze`, `refresh`
+* ./utils/update.php: `replication`, `add-data`, `index`, `refresh`
+* ./utils/specialphrases.php: `special-phrases`
+* ./utils/check_import_finished.php: `admin`
+* ./utils/warm.php: `admin`
+* ./utils/export.php: `export`
+
+Try `nominatim <command> --help` for more information about each subcommand.
+
+`./utils/query.php` no longer exists in its old form. `nominatim search`
+provides a replacement but returns different output.
+
+### Switch to normalized house numbers
+
+The housenumber column in the placex table uses now normalized version.
+The automatic migration step will convert the column but this may take a
+very long time. It is advisable to take the machine offline while doing that.
+
+## 3.5.0 -> 3.6.0
+
+### Change of layout of search_name_* tables
+
+The table need a different index for nearest place lookup. Recreate the
+indexes using the following shell script:
+
+```bash
+for table in `psql -d nominatim -c "SELECT tablename FROM pg_tables WHERE tablename LIKE 'search_name_%'" -tA | grep -v search_name_blank`;
+do
+    psql -d nominatim -c "DROP INDEX idx_${table}_centroid_place; CREATE INDEX idx_${table}_centroid_place ON ${table} USING gist (centroid) WHERE ((address_rank >= 2) AND (address_rank <= 25)); DROP INDEX idx_${table}_centroid_street; CREATE INDEX idx_${table}_centroid_street ON ${table} USING gist (centroid) WHERE ((address_rank >= 26) AND (address_rank <= 27))";
+done
+```
+
+### Removal of html output
+
+The debugging UI is no longer directly provided with Nominatim. Instead we
+now provide a simple Javascript application. Please refer to
+[Setting up the Nominatim UI](Setup-Nominatim-UI.md) for details on how to
+set up the UI.
+
+The icons served together with the API responses have been moved to the
+nominatim-ui project as well. If you want to keep the `icon` field in the
+response, you need to set `CONST_MapIcon_URL` to the URL of the `/mapicon`
+directory of nominatim-ui.
+
+### Change order during indexing
+
+When reindexing places during updates, there is now a different order used
+which needs a different database index. Create it with the following SQL command:
+
+```sql
+CREATE INDEX idx_placex_pendingsector_rank_address
+  ON placex
+  USING BTREE (rank_address, geometry_sector)
+  WHERE indexed_status > 0;
+```
+
+You can then drop the old index with:
+
+```sql
+DROP INDEX idx_placex_pendingsector;
+```
+
+### Unused index
+
+This index has been unused ever since the query using it was changed two years ago. Saves about 12GB on a planet installation.
+
+```sql
+DROP INDEX idx_placex_geometry_reverse_lookupPoint;
+```
+
+### Switching to dotenv
+
+As part of the work changing the configuration format, the configuration for
+the website is now using a separate configuration file. To create the
+configuration file, run the following command after updating:
+
+```sh
+./utils/setup.php --setup-website
+```
+
+### Update SQL code
+
+To update the SQL code to the leatest version run:
+
+```
+./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
+```
+
+## 3.4.0 -> 3.5.0
+
+### New Wikipedia/Wikidata importance tables
+
+The `wikipedia_*` tables have a new format that also includes references to
+Wikidata. You need to update the computation functions and the tables as
+follows:
+
+  * download the new Wikipedia tables as described in the import section
+  * reimport the tables: `./utils/setup.php --import-wikipedia-articles`
+  * update the functions: `./utils/setup.php --create-functions --enable-diff-updates`
+  * create a new lookup index:
+```sql
+CREATE INDEX idx_placex_wikidata
+  ON placex
+  USING BTREE ((extratags -> 'wikidata'))
+  WHERE extratags ? 'wikidata'
+    AND class = 'place'
+    AND osm_type = 'N'
+    AND rank_search < 26;
+```
+  * compute importance: `./utils/update.php --recompute-importance`
+
+The last step takes about 10 hours on the full planet.
+
+Remove one function (it will be recreated in the next step):
+
+```sql
+DROP FUNCTION create_country(hstore,character varying);
+```
+
+Finally, update all SQL functions:
+
+```sh
+./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
+```
+
+## 3.3.0 -> 3.4.0
+
+### Reorganisation of location_area_country table
+
+The table `location_area_country` has been optimized. You need to switch to the
+new format when you run updates. While updates are disabled, run the following
+SQL commands:
+
+```sql
+CREATE TABLE location_area_country_new AS
+  SELECT place_id, country_code, geometry FROM location_area_country;
+DROP TABLE location_area_country;
+ALTER TABLE location_area_country_new RENAME TO location_area_country;
+CREATE INDEX idx_location_area_country_geometry ON location_area_country USING GIST (geometry);
+CREATE INDEX idx_location_area_country_place_id ON location_area_country USING BTREE (place_id);
+```
+
+Finally, update all SQL functions:
+
+```sh
+./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
+```
+
+## 3.2.0 -> 3.3.0
+
+### New database connection string (DSN) format
+
+Previously database connection setting (`CONST_Database_DSN` in `settings/*.php`) had the format
+
+   * (simple) `pgsql://@/nominatim`
+   * (complex) `pgsql://johndoe:secret@machine1.domain.com:1234/db1`
+
+The new format is
+
+   * (simple) `pgsql:dbname=nominatim`
+   * (complex) `pgsql:dbname=db1;host=machine1.domain.com;port=1234;user=johndoe;password=secret`
+
+### Natural Earth country boundaries no longer needed as fallback
+
+```sql
+DROP TABLE country_naturalearthdata;
+```
+
+Finally, update all SQL functions:
+
+```sh
+./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
+```
+
+### Configurable Address Levels
+
+The new configurable address levels require a new table. Create it with the
+following command:
+
+```sh
+./utils/update.php --update-address-levels
+```
+
+## 3.1.0 -> 3.2.0
+
+### New reverse algorithm
+
+The reverse algorithm has changed and requires new indexes. Run the following
+SQL statements to create the indexes:
+
+```sql
+CREATE INDEX idx_placex_geometry_reverse_lookupPoint
+  ON placex
+  USING gist (geometry)
+  WHERE (name IS NOT null or housenumber IS NOT null or rank_address BETWEEN 26 AND 27)
+    AND class NOT IN ('railway','tunnel','bridge','man_made')
+    AND rank_address >= 26
+    AND indexed_status = 0
+    AND linked_place_id IS null;
+CREATE INDEX idx_placex_geometry_reverse_lookupPolygon
+  ON placex USING gist (geometry)
+  WHERE St_GeometryType(geometry) in ('ST_Polygon', 'ST_MultiPolygon')
+    AND rank_address between 4 and 25
+    AND type != 'postcode'
+    AND name is not null
+    AND indexed_status = 0
+    AND linked_place_id is null;
+CREATE INDEX idx_placex_geometry_reverse_placeNode
+  ON placex USING gist (geometry)
+  WHERE osm_type = 'N'
+    AND rank_search between 5 and 25
+    AND class = 'place'
+    AND type != 'postcode'
+    AND name is not null
+    AND indexed_status = 0
+    AND linked_place_id is null;
+```
+
+You also need to grant the website user access to the `country_osm_grid` table:
+
+```sql
+GRANT SELECT ON table country_osm_grid to "www-user";
+```
+
+Replace the `www-user` with the user name of your website server if necessary.
+
+You can now drop the unused indexes:
+
+```sql
+DROP INDEX idx_placex_reverse_geometry;
+```
+
+Finally, update all SQL functions:
+
+```sh
+./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
+```
+
+## 3.0.0 -> 3.1.0
+
+### Postcode Table
+
+A new separate table for artificially computed postcode centroids was introduced.
+Migration to the new format is possible but **not recommended**.
+
+Create postcode table and indexes, running the following SQL statements:
+
+```sql
+CREATE TABLE location_postcode
+  (place_id BIGINT, parent_place_id BIGINT, rank_search SMALLINT,
+   rank_address SMALLINT, indexed_status SMALLINT, indexed_date TIMESTAMP,
+   country_code varchar(2), postcode TEXT,
+   geometry GEOMETRY(Geometry, 4326));
+CREATE INDEX idx_postcode_geometry ON location_postcode USING GIST (geometry);
+CREATE UNIQUE INDEX idx_postcode_id ON location_postcode USING BTREE (place_id);
+CREATE INDEX idx_postcode_postcode ON location_postcode USING BTREE (postcode);
+GRANT SELECT ON location_postcode TO "www-data";
+DROP TYPE IF EXISTS nearfeaturecentr CASCADE;
+CREATE TYPE nearfeaturecentr AS (
+  place_id BIGINT,
+  keywords int[],
+  rank_address smallint,
+  rank_search smallint,
+  distance float,
+  isguess boolean,
+  postcode TEXT,
+  centroid GEOMETRY
+);
+```
+
+Add postcode column to `location_area` tables with SQL statement:
+
+```sql
+ALTER TABLE location_area ADD COLUMN postcode TEXT;
+```
+
+Then reimport the functions:
+
+```sh
+./utils/setup.php --create-functions --enable-diff-updates --create-partition-functions
+```
+
+Create appropriate triggers with SQL:
+
+```sql
+CREATE TRIGGER location_postcode_before_update BEFORE UPDATE ON location_postcode
+    FOR EACH ROW EXECUTE PROCEDURE postcode_update();
+```
+
+Finally populate the postcode table (will take a while):
+
+```sh
+./utils/setup.php --calculate-postcodes --index --index-noanalyse
+```
+
+This will create a working database. You may also delete the old artificial
+postcodes now. Note that this may be expensive and is not absolutely necessary.
+The following SQL statement will remove them:
+
+```sql
+DELETE FROM place_addressline a USING placex p
+ WHERE a.address_place_id = p.place_id and p.osm_type = 'P';
+ALTER TABLE placex DISABLE TRIGGER USER;
+DELETE FROM placex WHERE osm_type = 'P';
+ALTER TABLE placex ENABLE TRIGGER USER;
+```

docs/admin/Setup-Nominatim-UI.md

@@ -0,0 +1,162 @@
+# Setting up the Nominatim UI
+
+Nominatim is a search API, it does not provide a website interface on its
+own. [nominatim-ui](https://github.com/osm-search/nominatim-ui) offers a
+small website for testing your setup and inspecting the database content.
+
+This section provides a quick start how to use nominatim-ui with your
+installation. For more details, please also have a look at the
+[README of nominatim-ui](https://github.com/osm-search/nominatim-ui/blob/master/README.md).
+
+## Installing nominatim-ui
+
+We provide regular releases of nominatim-ui that contain the packaged website.
+They do not need any special installation. Just download, configure
+and run it. Grab the latest release from
+[nominatim-ui's Github release page](https://github.com/osm-search/nominatim-ui/releases)
+and unpack it. You can use `nominatim-ui-x.x.x.tar.gz` or `nominatim-ui-x.x.x.zip`.
+
+Next you need to adapt the UI to your installation. Custom settings need to be
+put into `dist/theme/config.theme.js`. At a minimum you need to
+set `Nominatim_API_Endpoint` to point to your Nominatim installation:
+
+    cd nominatim-ui
+    echo "Nominatim_Config.Nominatim_API_Endpoint='https://myserver.org/nominatim/';" > dist/theme/config.theme.js
+
+For the full set of available settings, have a look at `dist/config.defaults.js`.
+
+Then you can just test it locally by spinning up a webserver in the `dist`
+directory. For example, with Python:
+
+    cd nominatim-ui/dist
+    python3 -m http.server 8765
+
+The website is now available at `http://localhost:8765`.
+
+## Forwarding searches to nominatim-ui
+
+Nominatim used to provide the search interface directly by itself when
+`format=html` was requested. For the `/search` endpoint this even used
+to be the default.
+
+The following section describes how to set up Apache or nginx, so that your
+users are forwarded to nominatim-ui when they go to a URL that formerly presented
+the UI.
+
+### Setting up forwarding in Nginx
+
+First of all make nominatim-ui available under `/ui` on your webserver:
+
+``` nginx
+server {
+
+    # Here is the Nominatim setup as described in the Installation section
+
+    location /ui/ {
+        alias <full path to the nominatim-ui directory>/dist/;
+        index index.html;
+    }
+}
+```
+
+Now we need to find out if a URL should be forwarded to the UI. Add the
+following `map` commands *outside* the server section:
+
+``` nginx
+# Inspect the format parameter in the query arguments. We are interested
+# if it is set to html or something else or if it is missing completely.
+map $args $format {
+    default                  default;
+    ~(^|&)format=html(&|$)   html;
+    ~(^|&)format=            other;
+}
+
+# Determine from the URI and the format parameter above if forwarding is needed.
+map $uri/$format $forward_to_ui {
+    default               0;  # no forwarding by default
+    ~/search.*/default    1;  # Use this line only, if search should go to UI by default.
+    ~/reverse.*/html      1;  # Forward API calls that UI supports, when
+    ~/status.*/html       1;  #   format=html is explicitly requested.
+    ~/search.*/html       1;
+    ~/details.*/html      1;
+}
+```
+
+The `$forward_to_ui` parameter can now be used to conditionally forward the
+calls:
+
+``` nginx
+location / {
+    if ($forward_to_ui) {
+        rewrite ^(/[^/.]*) https://$http_host/ui$1.html redirect;
+    }
+
+    # proxy_pass commands
+}
+```
+
+Reload nginx and the UI should be available.
+
+### Setting up forwarding in Apache
+
+First of all make nominatim-ui available in the `ui/` subdirectory where
+Nominatim is installed. For example, given you have set up an alias under
+`nominatim` like this:
+
+``` apache
+Alias /nominatim /home/vagrant/build/website
+```
+
+you need to insert the following rules for nominatim-ui before that alias:
+
+```
+<Directory "/home/vagrant/nominatim-ui/dist">
+  DirectoryIndex search.html
+  Require all granted
+</Directory>
+
+Alias /nominatim/ui /home/vagrant/nominatim-ui/dist
+```
+
+Replace `/home/vagrant/nominatim-ui` with the directory where you have cloned
+nominatim-ui.
+
+!!! important
+    The alias for nominatim-ui must come before the alias for the Nominatim
+    website directory.
+
+To set up forwarding, the Apache rewrite module is needed. Enable it with:
+
+``` sh
+sudo a2enmod rewrite
+```
+
+Then add rewrite rules to the `Directory` directive of the Nominatim website
+directory like this:
+
+``` apache
+<Directory "/home/vagrant/build/website">
+  Options FollowSymLinks MultiViews
+  AddType text/html   .php
+  Require all granted
+
+  RewriteEngine On
+
+  # This must correspond to the URL where nominatim can be found.
+  RewriteBase "/nominatim/"
+
+  # If no endpoint is given, then use search.
+  RewriteRule ^(/|$)   "search"
+
+  # If format-html is explicitly requested, forward to the UI.
+  RewriteCond %{QUERY_STRING} "format=html"
+  RewriteRule ^([^/.]+) ui/$1.html [R,END]
+
+  # Optionally: if no format parameter is there then forward /search.
+  RewriteCond %{QUERY_STRING} "!format="
+  RewriteCond %{REQUEST_URI}  "/search"
+  RewriteRule ^([^/.]+) ui/$1.html [R,END]
+</Directory>
+```
+
+Restart Apache and the UI should be available.

docs/admin/Update.md

@@ -0,0 +1,202 @@
+# Updating the Database
+
+There are many different ways to update your Nominatim database.
+The following section describes how to keep it up-to-date using
+an [online replication service for OpenStreetMap data](https://wiki.openstreetmap.org/wiki/Planet.osm/diffs)
+For a list of other methods to add or update data see the output of
+`nominatim add-data --help`.
+
+!!! important
+    If you have configured a flatnode file for the import, then you
+    need to keep this flatnode file around for updates.
+
+### Installing the newest version of Pyosmium
+
+The replication process uses
+[Pyosmium](https://docs.osmcode.org/pyosmium/latest/updating_osm_data.html)
+to download update data from the server.
+It is recommended to install Pyosmium via pip.
+Run (as the same user who will later run the updates):
+
+```sh
+pip3 install --user osmium
+```
+
+### Setting up the update process
+
+Next the update process needs to be initialised. By default Nominatim is configured
+to update using the global minutely diffs.
+
+If you want a different update source you will need to add some settings
+to `.env`. For example, to use the daily country extracts
+diffs for Ireland from Geofabrik add the following:
+
+    # base URL of the replication service
+    NOMINATIM_REPLICATION_URL="https://download.geofabrik.de/europe/ireland-and-northern-ireland-updates"
+    # How often upstream publishes diffs (in seconds)
+    NOMINATIM_REPLICATION_UPDATE_INTERVAL=86400
+    # How long to sleep if no update found yet (in seconds)
+    NOMINATIM_REPLICATION_RECHECK_INTERVAL=900
+
+To set up the update process now run the following command:
+
+    nominatim replication --init
+
+It outputs the date where updates will start. Recheck that this date is
+what you expect.
+
+The `replication --init` command needs to be rerun whenever the replication
+service is changed.
+
+### Updating Nominatim
+
+Nominatim supports different modes how to retrieve the update data from the
+server. Which one you want to use depends on your exact setup and how often you
+want to retrieve updates.
+
+These instructions are for using a single source of updates. If you have
+imported multiple country extracts and want to keep them
+up-to-date, [Advanced installations section](Advanced-Installations.md)
+contains instructions to set up and update multiple country extracts.
+
+#### One-time mode
+
+When the `--once` parameter is given, then Nominatim will download exactly one
+batch of updates and then exit. This one-time mode still respects the
+`NOMINATIM_REPLICATION_UPDATE_INTERVAL` that you have set. If according to
+the update interval no new data has been published yet, it will go to sleep
+until the next expected update and only then attempt to download the next batch.
+
+The one-time mode is particularly useful if you want to run updates continuously
+but need to schedule other work in between updates. For example, you might
+want to regularly recompute postcodes -- a process that
+must not be run while updates are in progress. An update script refreshing
+postcodes regularly might look like this:
+
+```sh
+#!/bin/bash
+
+# Switch to your project directory.
+cd /srv/nominatim
+
+while true; do
+  nominatim replication --once
+  if [ -f "/srv/nominatim/schedule-maintenance" ]; then
+    rm /srv/nominatim/schedule-maintenance
+    nominatim refresh --postcodes
+  fi
+done
+```
+
+A cron job then creates the file `/srv/nominatim/schedule-maintenance` once per night.
+
+##### One-time mode with systemd
+
+You can run the one-time mode with a systemd timer & service.
+
+Create a timer description like `/etc/systemd/system/nominatim-updates.timer`:
+
+```
+[Unit]
+Description=Timer to start updates of Nominatim
+
+[Timer]
+OnActiveSec=2
+OnUnitActiveSec=1min
+Unit=nominatim-updates.service
+
+[Install]
+WantedBy=multi-user.target
+```
+
+`OnUnitActiveSec` defines how often the individual update command is run.
+
+Then add a service definition for the timer in `/etc/systemd/system/nominatim-updates.service`:
+
+```
+[Unit]
+Description=Single updates of Nominatim
+
+[Service]
+WorkingDirectory=/srv/nominatim-project
+ExecStart=/srv/nominatim-venv/bin/nominatim replication --once
+StandardOutput=journald
+StandardError=inherit
+User=nominatim
+Group=nominatim
+Type=simple
+
+[Install]
+WantedBy=multi-user.target
+```
+
+Replace the `WorkingDirectory` with your project directory. `ExecStart` points
+to the nominatim binary that was installed in your virtualenv earlier.
+Finally, you might need to adapt user and group names as required.
+
+Now activate the service and start the updates:
+
+```
+sudo systemctl daemon-reload
+sudo systemctl enable nominatim-updates.timer
+sudo systemctl start nominatim-updates.timer
+```
+
+You can stop future data updates while allowing any current, in-progress
+update steps to finish, by running `sudo systemctl stop
+nominatim-updates.timer` and waiting until `nominatim-updates.service` isn't
+running (`sudo systemctl is-active nominatim-updates.service`).
+
+To check the output from the update process, use journalctl: `journalctl -u
+nominatim-updates.service`
+
+
+#### Catch-up mode
+
+With the `--catch-up` parameter, Nominatim will immediately try to download
+all changes from the server until the database is up-to-date. The catch-up mode
+still respects the parameter `NOMINATIM_REPLICATION_MAX_DIFF`. It downloads and
+applies the changes in appropriate batches until all is done.
+
+The catch-up mode is foremost useful to bring the database up to date after the
+initial import. Give that the service usually is not in production at this
+point, you can temporarily be a bit more generous with the batch size and
+number of threads you use for the updates by running catch-up like this:
+
+```
+cd /srv/nominatim-project
+NOMINATIM_REPLICATION_MAX_DIFF=5000 nominatim replication --catch-up --threads 15
+```
+
+The catch-up mode is also useful when you want to apply updates at a lower
+frequency than what the source publishes. You can set up a cron job to run
+replication catch-up at whatever interval you desire.
+
+!!! hint
+    When running scheduled updates with catch-up, it is a good idea to choose
+    a replication source with an update frequency that is an order of magnitude
+    lower. For example, if you want to update once a day, use an hourly updated
+    source. This ensures that you don't miss an entire day of updates when
+    the source is unexpectedly late to publish its update.
+
+    If you want to use the source with the same update frequency (e.g. a daily
+    updated source with daily updates), use the
+    once mode together with a frequently run systemd script as described above.
+    It ensures to re-request the newest update until they have been published.
+
+
+#### Continuous updates
+
+!!! danger
+    This mode is no longer recommended to use and will removed in future
+    releases. systemd is much better
+    suited for running regular updates. Please refer to the setup
+    instructions for running one-time mode with systemd above.
+
+This is the easiest mode. Simply run the replication command without any
+parameters:
+
+    nominatim replication
+
+The update application keeps running forever and retrieves and applies
+new updates from the server as they are published.

docs/api/Details.md

@@ -0,0 +1,187 @@
+# Place details
+
+Show all details about a single place saved in the database.
+
+This API endpoint is meant for visual inspection of the data in the database,
+mainly together with [Nominatim-UI](https://github.com/osm-search/nominatim-ui/).
+The parameters of the endpoint and the output may change occasionally between
+versions of Nominatim. Do not rely on the output in scripts or applications.
+
+!!! warning
+    The details endpoint at https://nominatim.openstreetmap.org
+    may not used in scripts or bots at all.
+    See [Nominatim Usage Policy](https://operations.osmfoundation.org/policies/nominatim/).
+
+
+
+The details API supports the following two request formats:
+
+``` xml
+https://nominatim.openstreetmap.org/details?osmtype=[N|W|R]&osmid=<value>&class=<value>
+```
+
+`osmtype` and `osmid` are required parameters. The type is one of node (N), way (W)
+or relation (R). The id must be a number. The `class` parameter is optional and
+allows to distinguish between entries, when the corresponding OSM object has more
+than one main tag. For example, when a place is tagged with `tourism=hotel` and
+`amenity=restaurant`, there will be two place entries in Nominatim, one for a
+restaurant, one for a hotel. You need to specify `class=tourism` or `class=amentity`
+to get exactly the one you want. If there are multiple places in the database
+but the `class` parameter is left out, then one of the places will be chosen
+at random and displayed.
+
+``` xml
+https://nominatim.openstreetmap.org/details?place_id=<value>
+```
+
+Place IDs are assigned sequentially during Nominatim data import. The ID
+for a place is different between Nominatim installation (servers) and
+changes when data gets reimported. Therefore it cannot be used as
+a permanent id and shouldn't be used in bug reports.
+
+!!! danger "Deprecation warning"
+    The API can also be used with the URL
+    `https://nominatim.openstreetmap.org/details.php`. This is now deprecated
+    and will be removed in future versions.
+
+
+## Parameters
+
+This section lists additional optional parameters.
+
+### Output format
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| json_callback | function name | _unset_ |
+
+When set, then JSON output will be wrapped in a callback function with
+the given name. See [JSONP](https://en.wikipedia.org/wiki/JSONP) for more
+information.
+
+### Output details
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| addressdetails | 0 or 1 | 0 |
+
+When set to 1, include a breakdown of the address into elements.
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| keywords  | 0 or 1 | 0 |
+
+When set to 1, include a list of name keywords and address keywords
+in the result.
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| linkedplaces  | 0 or 1 | 1 |
+
+Include details of places that are linked with this one. Places get linked
+together when they are different forms of the same physical object. Nominatim
+links two kinds of objects together: place nodes get linked with the
+corresponding administrative boundaries. Waterway relations get linked together with their
+members.
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| hierarchy  | 0 or 1 | 0 |
+
+Include details of POIs and address that depend on the place. Only POIs
+that use this place to determine their address will be returned.
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| group_hierarchy  | 0 or 1 | 0 |
+
+When set to 1, the output of the address hierarchy will be
+grouped by type.
+
+| Parameter | Value  | Default |
+|-----------| -----  | ------- |
+| polygon_geojson | 0 or 1 | 0 |
+
+
+Include geometry of result.
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| entrances | 0 or 1 | 0 |
+
+When set to 1, include the tagged entrances in the result.
+
+
+### Language of results
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| accept-language | browser language string | content of "Accept-Language" HTTP header |
+
+Preferred language order for showing search results. This may either be
+a simple comma-separated list of language codes or have the same format
+as the ["Accept-Language" HTTP header](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept-Language).
+
+
+## Examples
+
+##### JSON
+
+[https://nominatim.openstreetmap.org/details?osmtype=W&osmid=38210407&format=json](https://nominatim.openstreetmap.org/details?osmtype=W&osmid=38210407&format=json)
+
+
+```json
+{
+  "place_id": 85993608,
+  "parent_place_id": 72765313,
+  "osm_type": "W",
+  "osm_id": 38210407,
+  "category": "place",
+  "type": "square",
+  "admin_level": "15",
+  "localname": "Pariser Platz",
+  "names": {
+    "name": "Pariser Platz",
+    "name:be": "Парыжская плошча",
+    "name:de": "Pariser Platz",
+    "name:es": "Plaza de París",
+    "name:he": "פאריזר פלאץ",
+    "name:ko": "파리저 광장",
+    "name:la": "Forum Parisinum",
+    "name:ru": "Парижская площадь",
+    "name:uk": "Паризька площа",
+    "name:zh": "巴黎廣場"
+  },
+  "addresstags": {
+    "postcode": "10117"
+  },
+  "housenumber": null,
+  "calculated_postcode": "10117",
+  "country_code": "de",
+  "indexed_date": "2018-08-18T17:02:45+00:00",
+  "importance": 0.339401620591472,
+  "calculated_importance": 0.339401620591472,
+  "extratags": {
+    "wikidata": "Q156716",
+    "wikipedia": "de:Pariser Platz"
+  },
+  "calculated_wikipedia": "de:Pariser_Platz",
+  "rank_address": 30,
+  "rank_search": 30,
+  "isarea": true,
+  "centroid": {
+    "type": "Point",
+    "coordinates": [
+      13.3786822618517,
+      52.5163654
+    ]
+  },
+  "geometry": {
+    "type": "Point",
+    "coordinates": [
+      13.3786822618517,
+      52.5163654
+    ]
+  }
+}
+```

docs/api/Faq.md

@@ -0,0 +1,85 @@
+# Frequently Asked Questions
+
+## API Results
+
+#### 1. The address of my search results contains far-away places that don't belong there.
+
+Nominatim computes the address from two sources in the OpenStreetMap data:
+from administrative boundaries and from place nodes. Boundaries are the more
+useful source. They precisely describe an area. So it is very clear for
+Nominatim if a point belongs to an area or not. Place nodes are more complicated.
+These are only points without any precise extent. So Nominatim has to take a
+guess and assume that an address belongs to the closest place node it can find.
+In an ideal world, Nominatim would not need the place nodes but there are
+many places on earth where there are no precise boundaries available for
+all parts that make up an address. This is in particular true for the more
+local address parts, like villages and suburbs. Therefore it is not possible
+to completely dismiss place nodes. And sometimes they sneak in where they
+don't belong.
+
+As a OpenStreetMap mapper, you can improve the situation in two ways: if you
+see a place node for which already an administrative area exists, then you
+should _link_ the two by adding the node with a 'label' role to the boundary
+relation. If there is no administrative area, you can add the approximate
+extent of the place and tag it place=<something> as well.
+
+#### 2. When doing reverse search, the address details have parts that don't contain the point I was looking up.
+
+There is a common misconception how the reverse API call works in Nominatim.
+Reverse does not give you the address of the point you asked for. Reverse
+returns the closest object to the point you asked for and then returns the
+address of that object. Now, if you are close to a border, then the closest
+object may be across that border. When Nominatim then returns the address,
+it contains the county/state/country across the border.
+
+#### 3. I get different counties/states/countries when I change the zoom parameter in the reverse query. How is that possible?
+
+This is basically the same problem as in the previous answer.
+The zoom level influences at which [search rank](../customize/Ranking.md#search-rank) Nominatim starts looking
+for the closest object. So the closest house number maybe on one side of the
+border while the closest street is on the other. As the address details contain
+the address of the closest object found, you might sometimes get one result,
+sometimes the other for the closest point.
+
+#### 4. Can you return the continent?
+
+Nominatim assigns each map feature one country. Those outside any administrative
+boundaries are assigned a special no-country. Continents or other super-national
+administrations (e.g. European Union, NATO, Custom unions) are not supported,
+see also [Administrative Boundary](https://wiki.openstreetmap.org/wiki/Tag:boundary%3Dadministrative#Super-national_administrations).
+
+#### 5. Can you return the timezone?
+
+See this separate OpenStreetMap-based project [Timezone Boundary Builder](https://github.com/evansiroky/timezone-boundary-builder).
+
+#### 6. I want to download a list of streets/restaurants of a city/region
+
+The [Overpass API](https://wiki.openstreetmap.org/wiki/Overpass_API) is more
+suited for these kinds of queries.
+
+That said if you installed your own Nominatim instance you can use the
+`nominatim export` PHP script as basis to return such lists.
+
+#### 7. My result has a wrong postcode. Where does it come from?
+
+Most places in OSM don't have a postcode, so Nominatim tries to interpolate
+one. It first look at all the places that make up the address of the place.
+If one of them has a postcode defined, this is the one to be used. When
+none of the address parts has a postcode either, Nominatim interpolates one
+from the surrounding objects. If the postcode is for your result is one, then
+most of the time there is an OSM object with the wrong postcode nearby.
+
+To find the bad postcode, go to
+[https://nominatim.openstreetmap.org](https://nominatim.openstreetmap.org)
+and search for your place. When you have found it, click on the 'details' link
+under the result to go to the details page. There is a field 'Computed Postcode'
+which should display the bad postcode. Click on the 'how?' link. A small
+explanation text appears. It contains a link to a query for Overpass Turbo.
+Click on that and you get a map with all places in the area that have the bad
+postcode. If none is displayed, zoom the map out a bit and then click on 'Run'.
+
+Now go to [OpenStreetMap](https://openstreetmap.org) and fix the error you
+have just found. It will take at least a day for Nominatim to catch up with
+your data fix. Sometimes longer, depending on how much editing activity is in
+the area.
+

docs/api/Lookup.md

@@ -0,0 +1,233 @@
+# Address lookup
+
+The lookup API allows to query the address and other details of one or
+multiple OSM objects like node, way or relation.
+
+## Endpoint
+
+The lookup API has the following format:
+
+```
+  https://nominatim.openstreetmap.org/lookup?osm_ids=[N|W|R]<value>,…,…,&<params>
+```
+
+`osm_ids` is mandatory and must contain a comma-separated list of OSM ids each
+prefixed with its type, one of node(N), way(W) or relation(R). Up to 50 ids
+can be queried at the same time.
+
+!!! danger "Deprecation warning"
+    The API can also be used with the URL
+    `https://nominatim.openstreetmap.org/lookup.php`. This is now deprecated
+    and will be removed in future versions.
+
+
+## Parameters
+
+This section lists additional optional parameters.
+
+### Output format
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| format    | one of: `xml`, `json`, `jsonv2`, `geojson`, `geocodejson` | `jsonv2` |
+
+See [Place Output Formats](Output.md) for details on each format.
+
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| json_callback | function name | _unset_ |
+
+When given, then JSON output will be wrapped in a callback function with
+the given name. See [JSONP](https://en.wikipedia.org/wiki/JSONP) for more
+information.
+
+Only has an effect for JSON output formats.
+
+
+### Output details
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| addressdetails | 0 or 1 | 1 |
+
+When set to 1, include a breakdown of the address into elements.
+The exact content of the address breakdown depends on the output format.
+
+!!! tip
+    If you are interested in a stable classification of address categories
+    (suburb, city, state, etc), have a look at the `geocodejson` format.
+    All other formats return classifications according to OSM tagging.
+    There is a much larger set of categories and they are not always consistent,
+    which makes them very hard to work with.
+
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| extratags | 0 or 1 | 0 |
+
+When set to 1, the response include any additional information in the result
+that is available in the database, e.g. wikipedia link, opening hours.
+
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| namedetails | 0 or 1 | 0 |
+
+When set to 1, include a full list of names for the result. These may include
+language variants, older names, references and brand.
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| entrances | 0 or 1 | 0 |
+
+When set to 1, include the tagged entrances in the result.
+
+
+### Language of results
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| accept-language | browser language string | content of "Accept-Language" HTTP header |
+
+Preferred language order for showing search results. This may either be
+a simple comma-separated list of language codes or have the same format
+as the ["Accept-Language" HTTP header](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept-Language).
+
+!!! tip
+    First-time users of Nominatim tend to be confused that they get different
+    results when using Nominatim in the browser versus in a command-line tool
+    like wget or curl. The command-line tools
+    usually don't send any Accept-Language header, prompting Nominatim
+    to show results in the local language. Browsers on the contrary always
+    send the currently chosen browser language.
+
+
+### Polygon output
+
+| Parameter | Value  | Default |
+|-----------| -----  | ------- |
+| polygon_geojson | 0 or 1 | 0 |
+| polygon_kml     | 0 or 1 | 0 |
+| polygon_svg     | 0 or 1 | 0 |
+| polygon_text    | 0 or 1 | 0 |
+
+Add the full geometry of the place to the result output. Output formats
+in GeoJSON, KML, SVG or WKT are supported. Only one of these
+options can be used at a time.
+
+| Parameter | Value  | Default |
+|-----------| -----  | ------- |
+| polygon_threshold | floating-point number | 0.0 |
+
+When one of the polygon_* outputs is chosen, return a simplified version
+of the output geometry. The parameter describes the
+tolerance in degrees with which the geometry may differ from the original
+geometry. Topology is preserved in the geometry.
+
+
+### Other
+
+| Parameter | Value  | Default |
+|-----------| -----  | ------- |
+| email     | valid email address | _unset_ |
+
+If you are making large numbers of request please include an appropriate email
+address to identify your requests. See Nominatim's
+[Usage Policy](https://operations.osmfoundation.org/policies/nominatim/) for more details.
+
+
+| Parameter | Value  | Default |
+|-----------| -----  | ------- |
+| debug     | 0 or 1 | 0       |
+
+Output assorted developer debug information. Data on internals of Nominatim's
+"search loop" logic, and SQL queries. The output is HTML format.
+This overrides the specified machine readable format.
+
+
+## Examples
+
+##### XML
+
+[https://nominatim.openstreetmap.org/lookup?osm_ids=R146656,W104393803,N240109189](https://nominatim.openstreetmap.org/lookup?osm_ids=R146656,W50637691,N240109189)
+
+```xml
+  <lookupresults timestamp="Mon, 28 Mar 22 14:38:54 +0000" attribution="Data &#xA9; OpenStreetMap contributors, ODbL 1.0. http://www.openstreetmap.org/copyright" querystring="R146656,W50637691,N240109189" more_url="">
+    <place place_id="282236157" osm_type="relation" osm_id="146656" place_rank="16" address_rank="16" boundingbox="53.3401044,53.5445923,-2.3199185,-2.1468288" lat="53.44246175" lon="-2.2324547359718547" display_name="Manchester, Greater Manchester, North West England, England, United Kingdom" class="boundary" type="administrative" importance="0.35">
+      <city>Manchester</city>
+      <county>Greater Manchester</county>
+      <state_district>North West England</state_district>
+      <state>England</state>
+      <country>United Kingdom</country>
+      <country_code>gb</country_code>
+    </place>
+    <place place_id="115462561" osm_type="way" osm_id="50637691" place_rank="30" address_rank="30" boundingbox="52.3994612,52.3996426,13.0479574,13.0481754" lat="52.399550700000006" lon="13.048066846939687" display_name="Brandenburger Tor, Brandenburger Stra&#xDF;e, Historische Innenstadt, Innenstadt, Potsdam, Brandenburg, 14467, Germany" class="tourism" type="attraction" importance="0.29402874005524">
+      <tourism>Brandenburger Tor</tourism>
+      <road>Brandenburger Stra&#xDF;e</road>
+      <suburb>Historische Innenstadt</suburb>
+      <city>Potsdam</city>
+      <state>Brandenburg</state>
+      <postcode>14467</postcode>
+      <country>Germany</country>
+      <country_code>de</country_code>
+    </place>
+    <place place_id="567505" osm_type="node" osm_id="240109189" place_rank="15" address_rank="16" boundingbox="52.3586925,52.6786925,13.2396024,13.5596024" lat="52.5186925" lon="13.3996024" display_name="Berlin, 10178, Germany" class="place" type="city" importance="0.78753902824914">
+      <city>Berlin</city>
+      <state>Berlin</state>
+      <postcode>10178</postcode>
+      <country>Germany</country>
+      <country_code>de</country_code>
+    </place>
+  </lookupresults>
+```
+
+##### JSON with extratags
+
+[https://nominatim.openstreetmap.org/lookup?osm_ids=W50637691&format=json&extratags=1](https://nominatim.openstreetmap.org/lookup?osm_ids=W50637691&format=json&extratags=1)
+
+```json
+[
+   {
+      "place_id": 115462561,
+      "licence": "Data © OpenStreetMap contributors, ODbL 1.0. https://osm.org/copyright",
+      "osm_type": "way",
+      "osm_id": 50637691,
+      "boundingbox": [
+        "52.3994612",
+        "52.3996426",
+        "13.0479574",
+        "13.0481754"
+      ],
+      "lat": "52.399550700000006",
+      "lon": "13.048066846939687",
+      "display_name": "Brandenburger Tor, Brandenburger Straße, Historische Innenstadt, Innenstadt, Potsdam, Brandenburg, 14467, Germany",
+      "class": "tourism",
+      "type": "attraction",
+      "importance": 0.2940287400552381,
+      "address": {
+        "tourism": "Brandenburger Tor",
+        "road": "Brandenburger Straße",
+        "suburb": "Historische Innenstadt",
+        "city": "Potsdam",
+        "state": "Brandenburg",
+        "postcode": "14467",
+        "country": "Germany",
+        "country_code": "de"
+      },
+      "extratags": {
+        "image": "http://commons.wikimedia.org/wiki/File:Potsdam_brandenburger_tor.jpg",
+        "heritage": "4",
+        "wikidata": "Q695045",
+        "architect": "Carl von Gontard;Georg Christian Unger",
+        "wikipedia": "de:Brandenburger Tor (Potsdam)",
+        "wheelchair": "yes",
+        "description": "Kleines Brandenburger Tor in Potsdam",
+        "heritage:website": "http://www.bldam-brandenburg.de/images/stories/PDF/DML%202012/04-p-internet-13.pdf",
+        "heritage:operator": "bldam",
+        "architect:wikidata": "Q68768;Q95223",
+        "year_of_construction": "1771"
+      }
+   }
+]
+```

docs/api/Output.md

@@ -0,0 +1,386 @@
+# Place Output
+
+The [/reverse](Reverse.md), [/search](Search.md) and [/lookup](Lookup.md)
+API calls produce very similar output which is explained in this section.
+There is one section for each format. The format correspond to what was
+selected via the `format` parameter.
+
+## JSON
+
+The JSON format returns an array of places (for search and lookup) or
+a single place (for reverse) of the following format:
+
+```
+  {
+    "place_id": 100149,
+    "licence": "Data © OpenStreetMap contributors, ODbL 1.0. https://osm.org/copyright",
+    "osm_type": "node",
+    "osm_id": "107775",
+    "boundingbox": ["51.3473219", "51.6673219", "-0.2876474", "0.0323526"],
+    "lat": "51.5073219",
+    "lon": "-0.1276474",
+    "display_name": "London, Greater London, England, SW1A 2DU, United Kingdom",
+    "class": "place",
+    "type": "city",
+    "importance": 0.9654895765402,
+    "icon": "https://nominatim.openstreetmap.org/images/mapicons/poi_place_city.p.20.png",
+    "address": {
+      "city": "London",
+      "state_district": "Greater London",
+      "state": "England",
+      "ISO3166-2-lvl4": "GB-ENG",
+      "postcode": "SW1A 2DU",
+      "country": "United Kingdom",
+      "country_code": "gb"
+    },
+    "extratags": {
+      "capital": "yes",
+      "website": "http://www.london.gov.uk",
+      "wikidata": "Q84",
+      "wikipedia": "en:London",
+      "population": "8416535"
+    }
+  }
+```
+
+The possible fields are:
+
+ * `place_id` - reference to the Nominatim internal database ID ([see notes](#place_id-is-not-a-persistent-id))
+ * `osm_type`, `osm_id` - reference to the OSM object ([see notes](#osm-reference))
+ * `boundingbox` - area of corner coordinates ([see notes](#boundingbox))
+ * `lat`, `lon` - latitude and longitude of the centroid of the object
+ * `display_name` - full comma-separated address
+ * `class`, `type` - key and value of the main OSM tag
+ * `importance` - computed importance rank
+ * `icon` - link to class icon (if available)
+ * `address` - dictionary of address details (only with `addressdetails=1`,
+   [see notes](#addressdetails))
+ * `extratags` - dictionary with additional useful tags like website or maxspeed
+   (only with `extratags=1`)
+ * `namedetails` - dictionary with full list of available names including ref etc.
+ * `geojson`, `svg`, `geotext`, `geokml` - full geometry
+   (only with the appropriate `polygon_*` parameter)
+ * `entrances` - array of objects representing tagged entrances for the object, or
+   null if none are found (only with `entrances=1`)
+
+## JSONv2
+
+This is the same as the JSON format with two changes:
+
+ * `class` renamed to `category`
+ * additional field `place_rank` with the search rank of the object
+
+## GeoJSON
+
+This format follows the [RFC7946](https://geojson.org). Every feature includes
+a bounding box (`bbox`).
+
+The properties object has the following fields:
+
+ * `place_id` - reference to the Nominatim internal database ID ([see notes](#place_id-is-not-a-persistent-id))
+ * `osm_type`, `osm_id` - reference to the OSM object ([see notes](#osm-reference))
+ * `category`, `type` - key and value of the main OSM tag
+ * `display_name` - full comma-separated address
+ * `place_rank` - class search rank
+ * `importance` - computed importance rank
+ * `icon` - link to class icon (if available)
+ * `address` - dictionary of address details (only with `addressdetails=1`,
+   [see notes](#addressdetails))
+ * `extratags` - dictionary with additional useful tags like `website` or `maxspeed`
+   (only with `extratags=1`)
+ * `namedetails` - dictionary with full list of available names including ref etc.
+ * `entrances` - array of objects representing tagged entrances for the object, or
+   null if none are found (only with `entrances=1`)
+
+Use `polygon_geojson` to output the full geometry of the object instead
+of the centroid.
+
+## GeocodeJSON
+
+The GeocodeJSON format follows the
+[GeocodeJSON spec 0.1.0](https://github.com/geocoders/geocodejson-spec).
+The following feature attributes are implemented:
+
+ * `osm_type`, `osm_id` - reference to the OSM object (unofficial extension, [see notes](#osm-reference))
+ * `type` - the 'address level' of the object ('house', 'street', `district`, `city`,
+            `county`, `state`, `country`, `locality`)
+ * `osm_key`- key of the main tag of the OSM object (e.g. boundary, highway, amenity)
+ * `osm_value` - value of the main tag of the OSM object (e.g. residential, restaurant)
+ * `label` - full comma-separated address
+ * `name` - localised name of the place
+ * `housenumber`, `street`, `locality`, `district`, `postcode`, `city`,
+   `county`, `state`, `country` -
+   provided when it can be determined from the address (only with `addressdetails=1`)
+ * `admin` - list of localised names of administrative boundaries (only with `addressdetails=1`)
+ * `extra` - dictionary with additional useful tags like `website` or `maxspeed`
+   (only with `extratags=1`)
+ * `entrances` - array of objects representing tagged entrances for the object, or
+   null if none are found (only with `entrances=1`)
+
+
+Use `polygon_geojson` to output the full geometry of the object instead
+of the centroid.
+
+## XML
+
+The XML response returns one or more place objects in slightly different
+formats depending on the API call.
+
+### Reverse
+
+```
+<reversegeocode timestamp="Sat, 11 Aug 18 11:53:21 +0000"
+                attribution="Data © OpenStreetMap contributors, ODbL 1.0. https://www.openstreetmap.org/copyright"
+                querystring="lat=48.400381&lon=11.745876&zoom=5&format=xml">
+  <result place_id="179509537" osm_type="relation" osm_id="2145268" ref="BY" place_rank="15" address_rank="15"
+          lat="48.9467562" lon="11.4038717"
+          boundingbox="47.2701114,50.5647142,8.9763497,13.8396373">
+       Bavaria, Germany
+  </result>
+  <addressparts>
+     <state>Bavaria</state>
+     <ISO3166-2-lvl4>DE-BY</ISO3166-2-lvl4>
+     <country>Germany</country>
+     <country_code>de</country_code>
+  </addressparts>
+  <extratags>
+    <tag key="place" value="state"/>
+    <tag key="wikidata" value="Q980"/>
+    <tag key="wikipedia" value="de:Bayern"/>
+    <tag key="population" value="12520000"/>
+    <tag key="name:prefix" value="Freistaat"/>
+  </extratags>
+</reversegeocode>
+```
+
+The attributes of the outer `reversegeocode` element return generic information
+about the query, including the time when the response was sent (in UTC),
+attribution to OSM and the original querystring.
+
+The place information can be found in the `result` element. The attributes of that element contain:
+
+ * `place_id` - reference to the Nominatim internal database ID ([see notes](#place_id-is-not-a-persistent-id))
+ * `osm_type`, `osm_id` - reference to the OSM object ([see notes](#osm-reference))
+ * `ref` - content of `ref` tag if it exists
+ * `lat`, `lon` - latitude and longitude of the centroid of the object
+ * `boundingbox` - comma-separated list of corner coordinates ([see notes](#boundingbox))
+
+The full address of the result can be found in the content of the
+`result` element as a comma-separated list.
+
+Additional information requested with `addressdetails=1`, `extratags=1`,
+`namedetails=1`, and `entrances=1` can be found in extra elements.
+
+### Search and Lookup
+
+```
+<searchresults timestamp="Sat, 11 Aug 18 11:55:35 +0000"
+               attribution="Data © OpenStreetMap contributors, ODbL 1.0. https://www.openstreetmap.org/copyright"
+               querystring="london" polygon="false" exclude_place_ids="100149"
+               more_url="https://nominatim.openstreetmap.org/search?q=london&addressdetails=1&extratags=1&exclude_place_ids=100149&format=xml&accept-language=en-US%2Cen%3Bq%3D0.7%2Cde%3Bq%3D0.3">
+  <place place_id="100149" osm_type="node" osm_id="107775" place_rank="15" address_rank="15"
+         boundingbox="51.3473219,51.6673219,-0.2876474,0.0323526" lat="51.5073219" lon="-0.1276474"
+         display_name="London, Greater London, England, SW1A 2DU, United Kingdom"
+         class="place" type="city" importance="0.9654895765402"
+         icon="https://nominatim.openstreetmap.org/images/mapicons/poi_place_city.p.20.png">
+    <extratags>
+      <tag key="capital" value="yes"/>
+      <tag key="website" value="http://www.london.gov.uk"/>
+      <tag key="wikidata" value="Q84"/>
+      <tag key="wikipedia" value="en:London"/>
+      <tag key="population" value="8416535"/>
+    </extratags>
+    <city>London</city>
+    <state_district>Greater London</state_district>
+    <state>England</state>
+    <ISO3166-2-lvl4>GB-ENG</ISO3166-2-lvl4>
+    <postcode>SW1A 2DU</postcode>
+    <country>United Kingdom</country>
+    <country_code>gb</country_code>
+  </place>
+</searchresults>
+```
+
+The attributes of the outer `searchresults` or `lookupresults` element return
+generic information about the query:
+
+ * `timestamp` - UTC time when the response was sent
+ * `attribution` - OSM licensing information
+ * `querystring` - original query
+ * `polygon` - true when extra geometry information was requested
+ * `exclude_place_ids` - IDs of places that should be ignored in a follow-up request
+ * `more_url` - search call that will yield additional results for the query
+   just sent
+
+The place information can be found in the `place` elements, of which there may
+be more than one. The attributes of that element contain:
+
+ * `place_id` - reference to the Nominatim internal database ID ([see notes](#place_id-is-not-a-persistent-id))
+ * `osm_type`, `osm_id` - reference to the OSM object ([see notes](#osm-reference))
+ * `ref` - content of `ref` tag if it exists
+ * `lat`, `lon` - latitude and longitude of the centroid of the object
+ * `boundingbox` - comma-separated list of corner coordinates ([see notes](#boundingbox))
+ * `place_rank` - class [search rank](../customize/Ranking.md#search-rank)
+ * `address_rank` - place [address rank](../customize/Ranking.md#address-rank)
+ * `display_name` - full comma-separated address
+ * `class`, `type` - key and value of the main OSM tag
+ * `importance` - computed importance rank
+ * `icon` - link to class icon (if available)
+
+When `addressdetails=1` is requested, the localised address parts appear
+as subelements with the type of the address part.
+
+Additional information requested with `extratags=1`, `namedetails=1`, and
+`entrances=1` can be found in extra elements as sub-element of `extratags`,
+`namedetails`, and `entrances` respectively.
+
+
+## Notes on field values
+
+### place_id is not a persistent id
+
+The `place_id` is an internal identifier that is assigned data is imported
+into a Nominatim database. The same OSM object will have a different value
+on another server. It may even change its ID on the same server when it is
+removed and reimported while updating the database with fresh OSM data.
+It is thus not useful to treat it as permanent for later use.
+
+The combination `osm_type`+`osm_id` is slightly better but remember in
+OpenStreetMap mappers can delete, split, recreate places (and those
+get a new `osm_id`), there is no link between those old and new ids.
+Places can also change their meaning without changing their `osm_id`,
+e.g. when a restaurant is retagged as supermarket. For a more in-depth
+discussion see [Permanent ID](https://wiki.openstreetmap.org/wiki/Permanent_ID).
+
+If you need an ID that is consistent over multiple installations of Nominatim,
+then you should use the combination of `osm_type`+`osm_id`+`class`.
+
+### OSM reference
+
+Nominatim may sometimes return special objects that do not correspond directly
+to an object in OpenStreetMap. These are:
+
+* **Postcodes**. Nominatim returns an postcode point created from all mapped
+  postcodes of the same name. The class and type of these object is `place=postcdode`.
+  No `osm_type` and `osm_id` are included in the result.
+* **Housenumber interpolations**. Nominatim returns a single interpolated
+  housenumber from the interpolation way. The class and type are `place=house`
+  and `osm_type` and `osm_id` correspond to the interpolation way in OSM.
+* **TIGER housenumber.** Nominatim returns a single interpolated housenumber
+  from the TIGER data. The class and type are `place=house`
+  and `osm_type` and `osm_id` correspond to the street mentioned in the result.
+
+Please note that the `osm_type` and `osm_id` returned may be changed in the
+future. You should not expect to only find `node`, `way` and `relation` for
+the type.
+
+### boundingbox
+
+Comma separated list of min latitude, max latitude, min longitude, max longitude.
+The whole planet would be `-90,90,-180,180`.
+
+Can be used to pan and center the map on the result, for example with leafletjs
+mapping library
+`map.fitBounds([[bbox[0],bbox[2]],[bbox[1],bbox[3]]], {padding: [20, 20], maxzoom: 16});`
+
+Bounds crossing the antimeridian have a min latitude -180 and max latitude 180,
+essentially covering the entire planet
+(see [issue 184](https://github.com/openstreetmap/Nominatim/issues/184)).
+
+### addressdetails
+
+Address details in the xml and json formats return a list of names together
+with a designation label. Per default the following labels may appear:
+
+ * continent
+ * country, country_code
+ * region, state, state_district, county, ISO3166-2-lvl<admin_level>
+ * municipality, city, town, village
+ * city_district, district, borough, suburb, subdivision
+ * hamlet, croft, isolated_dwelling
+ * neighbourhood, allotments, quarter
+ * city_block, residential, farm, farmyard, industrial, commercial, retail
+ * road
+ * house_number, house_name
+ * emergency, historic, military, natural, landuse, place, railway,
+   man_made, aerialway, boundary, amenity, aeroway, club, craft, leisure,
+   office, mountain_pass, shop, tourism, bridge, tunnel, waterway
+ * postcode
+
+They roughly correspond to the classification of the OpenStreetMap data
+according to either the `place` tag or the main key of the object.
+
+### entrances
+
+Entrance details in the xml and json formats return the latitude and longitude
+of the entrance, the osm node ID, the [type of
+entrance](https://wiki.openstreetmap.org/wiki/Key:entrance), and any extra tags
+associated with the entrance node.
+
+ * osm_id
+ * type
+ * lat
+ * lon
+ * extratags
+
+They roughly correspond to the classification of the OpenStreetMap data
+according to either the `place` tag or the main key of the object.
+
+#### Example
+
+##### JSON
+
+[https://nominatim.openstreetmap.org/details?osmtype=W&osmid=32619803&entrances=1&format=json](https://nominatim.openstreetmap.org/details?osmtype=W&osmid=32619803&entrances=1&format=json)
+
+
+```json
+{
+  "place_id": 124325848,
+  "parent_place_id": 123936289,
+  "osm_type": "W",
+  "osm_id": 32619803,
+  "category": "shop",
+  "type": "supermarket",
+  "admin_level": 15,
+  "localname": "PENNY",
+  ...
+  "entrances": [
+    {
+      "osm_id": 1733488238,
+      "type": "yes",
+      "lat": "51.0466704",
+      "lon": "12.8077106",
+      "extratags": {
+        "foot": "yes"
+      }
+    },
+    {
+      "osm_id": 1733488256,
+      "type": "main",
+      "lat": "51.0467197",
+      "lon": "12.8078448",
+      "extratags": {
+        "foot": "yes"
+      }
+    },
+    {
+      "osm_id": 1733498087,
+      "type": "exit",
+      "lat": "51.0467081",
+      "lon": "12.8078131",
+      "extratags": {
+        "foot": "yes"
+      }
+    },
+    {
+      "osm_id": 7914950851,
+      "type": "service",
+      "lat": "51.0468487",
+      "lon": "12.8075876",
+      "extratags": {
+        "access": "delivery"
+      }
+    }
+  ]
+}
+```

docs/api/Overview.md

@@ -0,0 +1,14 @@
+This section describes the API V1 of the Nominatim web service. The
+service offers the following endpoints:
+
+ * __[/search](Search.md)__ - search OSM objects by name or type
+ * __[/reverse](Reverse.md)__ - search OSM object by their location
+ * __[/lookup](Lookup.md)__ - look up address details for OSM objects by their ID
+ * __[/status](Status.md)__ - query the status of the server
+ * __/deletable__ - list objects that have been deleted in OSM but are held
+                    back in Nominatim in case the deletion was accidental
+ * __/polygons__ - list of broken polygons detected by Nominatim
+ * __[/details](Details.md)__ - show internal details for an object (for debugging only)
+
+
+

docs/api/Reverse.md

@@ -0,0 +1,372 @@
+# Reverse Geocoding
+
+Reverse geocoding generates an address from a coordinate given as
+latitude and longitude.
+
+## How it works
+
+The reverse geocoding API does not exactly compute the address for the
+coordinate it receives. It works by finding the closest suitable OSM object
+and returning its address information. This may occasionally lead to
+unexpected results.
+
+First of all, Nominatim only includes OSM objects in
+its index that are suitable for searching. Small, unnamed paths for example
+are missing from the database and can therefore not be used for reverse
+geocoding either.
+
+The other issue to be aware of is that the closest OSM object may not always
+have a similar enough address to the coordinate you were requesting. For
+example, in dense city areas it may belong to a completely different street.
+
+## Endpoint
+
+The main format of the reverse API is
+
+```
+https://nominatim.openstreetmap.org/reverse?lat=<value>&lon=<value>&<params>
+```
+
+where `lat` and `lon` are latitude and longitude of a coordinate in WGS84
+projection. The API returns exactly one result or an error when the coordinate
+is in an area with no OSM data coverage.
+
+
+!!! tip
+    The reverse API allows a lookup of object by coordinate. If you want
+    to look up an object by ID, use the [Address Lookup API](Lookup.md) instead.
+
+!!! danger "Deprecation warning"
+    The API can also be used with the URL
+    `https://nominatim.openstreetmap.org/reverse.php`. This is now deprecated
+    and will be removed in future versions.
+
+
+## Parameters
+
+This section lists additional parameters to further influence the output.
+
+### Output format
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| format    | one of: `xml`, `json`, `jsonv2`, `geojson`, `geocodejson` | `xml` |
+
+See [Place Output Formats](Output.md) for details on each format.
+
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| json_callback | function name | _unset_ |
+
+When given, then JSON output will be wrapped in a callback function with
+the given name. See [JSONP](https://en.wikipedia.org/wiki/JSONP) for more
+information.
+
+Only has an effect for JSON output formats.
+
+
+### Output details
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| addressdetails | 0 or 1 | 1 |
+
+When set to 1, include a breakdown of the address into elements.
+The exact content of the address breakdown depends on the output format.
+
+!!! tip
+    If you are interested in a stable classification of address categories
+    (suburb, city, state, etc), have a look at the `geocodejson` format.
+    All other formats return classifications according to OSM tagging.
+    There is a much larger set of categories and they are not always consistent,
+    which makes them very hard to work with.
+
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| extratags | 0 or 1 | 0 |
+
+When set to 1, the response include any additional information in the result
+that is available in the database, e.g. wikipedia link, opening hours.
+
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| namedetails | 0 or 1 | 0 |
+
+When set to 1, include a full list of names for the result. These may include
+language variants, older names, references and brand.
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| entrances | 0 or 1 | 0 |
+
+When set to 1, include the tagged entrances in the result.
+
+
+### Language of results
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| accept-language | browser language string | content of "Accept-Language" HTTP header |
+
+Preferred language order for showing search results. This may either be
+a simple comma-separated list of language codes or have the same format
+as the ["Accept-Language" HTTP header](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept-Language).
+
+!!! tip
+    First-time users of Nominatim tend to be confused that they get different
+    results when using Nominatim in the browser versus in a command-line tool
+    like wget or curl. The command-line tools
+    usually don't send any Accept-Language header, prompting Nominatim
+    to show results in the local language. Browsers on the contrary always
+    send the currently chosen browser language.
+
+
+### Result restriction
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| zoom      | 0-18  | 18      |
+
+Level of detail required for the address. This is a number that
+corresponds roughly to the zoom level used in XYZ tile sources in frameworks
+like Leaflet.js, Openlayers etc.
+In terms of address details the zoom levels are as follows:
+
+ zoom | address detail
+ -----|---------------
+  3   | country
+  5   | state
+  8   | county
+  10  | city
+  12  | town / borough
+  13  | village / suburb
+  14  | neighbourhood
+  15  | any settlement
+  16  | major streets
+  17  | major and minor streets
+  18  | building
+
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| layer     | comma-separated list of: `address`, `poi`, `railway`, `natural`, `manmade` | `address,poi` |
+
+The layer filter allows to select places by themes.
+
+The `address` layer contains all places that make up an address:
+address points with house numbers, streets, inhabited places (suburbs, villages,
+cities, states etc.) and administrative boundaries.
+
+The `poi` layer selects all point of interest. This includes classic points
+of interest like restaurants, shops, hotels but also less obvious features
+like recycling bins, guideposts or benches.
+
+The `railway` layer includes railway infrastructure like tracks.
+Note that in Nominatim's standard configuration, only very few railway
+features are imported into the database.
+
+The `natural` layer collects features like rivers, lakes and mountains while
+the `manmade` layer functions as a catch-all for features not covered by the
+other layers.
+
+
+### Polygon output
+
+| Parameter | Value  | Default |
+|-----------| -----  | ------- |
+| polygon_geojson | 0 or 1 | 0 |
+| polygon_kml     | 0 or 1 | 0 |
+| polygon_svg     | 0 or 1 | 0 |
+| polygon_text    | 0 or 1 | 0 |
+
+Add the full geometry of the place to the result output. Output formats
+in GeoJSON, KML, SVG or WKT are supported. Only one of these
+options can be used at a time.
+
+| Parameter | Value  | Default |
+|-----------| -----  | ------- |
+| polygon_threshold | floating-point number | 0.0 |
+
+When one of the polygon_* outputs is chosen, return a simplified version
+of the output geometry. The parameter describes the
+tolerance in degrees with which the geometry may differ from the original
+geometry. Topology is preserved in the geometry.
+
+
+### Other
+
+| Parameter | Value  | Default |
+|-----------| -----  | ------- |
+| email     | valid email address | _unset_ |
+
+If you are making large numbers of request please include an appropriate email
+address to identify your requests. See Nominatim's
+[Usage Policy](https://operations.osmfoundation.org/policies/nominatim/) for more details.
+
+
+| Parameter | Value  | Default |
+|-----------| -----  | ------- |
+| debug     | 0 or 1 | 0       |
+
+Output assorted developer debug information. Data on internals of Nominatim's
+"search loop" logic, and SQL queries. The output is HTML format.
+This overrides the specified machine readable format.
+
+
+## Examples
+
+* [https://nominatim.openstreetmap.org/reverse?format=xml&lat=52.5487429714954&lon=-1.81602098644987&zoom=18&addressdetails=1&layer=address](https://nominatim.openstreetmap.org/reverse?format=xml&lat=52.5487429714954&lon=-1.81602098644987&zoom=18&addressdetails=1&layer=address)
+
+```xml
+  <reversegeocode timestamp="Fri, 06 Nov 09 16:33:54 +0000" querystring="...">
+    <result place_id="1620612" osm_type="node" osm_id="452010817">
+      135, Pilkington Avenue, Wylde Green, City of Birmingham, West Midlands (county), B72, United Kingdom
+    </result>
+    <addressparts>
+      <house_number>135</house_number>
+      <road>Pilkington Avenue</road>
+      <village>Wylde Green</village>
+      <town>Sutton Coldfield</town>
+      <city>City of Birmingham</city>
+      <county>West Midlands (county)</county>
+      <postcode>B72</postcode>
+      <country>United Kingdom</country>
+      <country_code>gb</country_code>
+    </addressparts>
+  </reversegeocode>
+```
+
+##### Example with `format=jsonv2`
+
+* [https://nominatim.openstreetmap.org/reverse?format=jsonv2&lat=-34.44076&lon=-58.70521&layer=address](https://nominatim.openstreetmap.org/reverse?format=jsonv2&lat=-34.44076&lon=-58.70521&layer=address)
+
+```json
+{
+  "place_id":"134140761",
+  "licence":"Data © OpenStreetMap contributors, ODbL 1.0. https:\/\/www.openstreetmap.org\/copyright",
+  "osm_type":"way",
+  "osm_id":"280940520",
+  "lat":"-34.4391708",
+  "lon":"-58.7064573",
+  "place_rank":"26",
+  "category":"highway",
+  "type":"motorway",
+  "importance":"0.1",
+  "addresstype":"road",
+  "display_name":"Autopista Pedro Eugenio Aramburu, El Triángulo, Partido de Malvinas Argentinas, Buenos Aires, 1.619, Argentina",
+  "name":"Autopista Pedro Eugenio Aramburu",
+  "address":{
+    "road":"Autopista Pedro Eugenio Aramburu",
+    "village":"El Triángulo",
+    "state_district":"Partido de Malvinas Argentinas",
+    "state":"Buenos Aires",
+    "postcode":"1.619",
+    "country":"Argentina",
+    "country_code":"ar"
+  },
+  "boundingbox":["-34.44159","-34.4370994","-58.7086067","-58.7044712"]
+}
+```
+
+##### Example with `format=geojson`
+
+* [https://nominatim.openstreetmap.org/reverse?format=geojson&lat=44.50155&lon=11.33989&layer=address](https://nominatim.openstreetmap.org/reverse?format=geojson&lat=44.50155&lon=11.33989&layer=address)
+
+```json
+{
+  "type": "FeatureCollection",
+  "licence": "Data © OpenStreetMap contributors, ODbL 1.0. https://osm.org/copyright",
+  "features": [
+    {
+      "type": "Feature",
+      "properties": {
+        "place_id": "18512203",
+        "osm_type": "node",
+        "osm_id": "1704756187",
+        "place_rank": "30",
+        "category": "place",
+        "type": "house",
+        "importance": "0",
+        "addresstype": "place",
+        "name": null,
+        "display_name": "71, Via Guglielmo Marconi, Saragozza-Porto, Bologna, BO, Emilia-Romagna, 40122, Italy",
+        "address": {
+          "house_number": "71",
+          "road": "Via Guglielmo Marconi",
+          "suburb": "Saragozza-Porto",
+          "city": "Bologna",
+          "county": "BO",
+          "state": "Emilia-Romagna",
+          "postcode": "40122",
+          "country": "Italy",
+          "country_code": "it"
+        }
+      },
+      "bbox": [
+        11.3397676,
+        44.5014307,
+        11.3399676,
+        44.5016307
+      ],
+      "geometry": {
+        "type": "Point",
+        "coordinates": [
+          11.3398676,
+          44.5015307
+        ]
+      }
+    }
+  ]
+}
+```
+
+##### Example with `format=geocodejson`
+
+[https://nominatim.openstreetmap.org/reverse?format=geocodejson&lat=60.2299&lon=11.1663&layer=address](https://nominatim.openstreetmap.org/reverse?format=geocodejson&lat=60.2299&lon=11.1663&layer=address)
+
+```json
+{
+  "type": "FeatureCollection",
+  "geocoding": {
+    "version": "0.1.0",
+    "attribution": "Data © OpenStreetMap contributors, ODbL 1.0. https://osm.org/copyright",
+    "licence": "ODbL",
+    "query": "60.229917843587,11.16630979382"
+  },
+  "features": {
+    "type": "Feature",
+    "properties": {
+      "geocoding": {
+        "place_id": "42700574",
+        "osm_type": "node",
+        "osm_id": "3110596255",
+        "type": "house",
+        "accuracy": 0,
+        "label": "1, Løvenbergvegen, Mogreina, Ullensaker, Akershus, 2054, Norway",
+        "name": null,
+        "housenumber": "1",
+        "street": "Løvenbergvegen",
+        "postcode": "2054",
+        "county": "Akershus",
+        "country": "Norway",
+        "admin": {
+          "level7": "Ullensaker",
+          "level4": "Akershus",
+          "level2": "Norway"
+        }
+      }
+    },
+    "geometry": {
+      "type": "Point",
+      "coordinates": [
+        11.1658572,
+        60.2301296
+      ]
+    }
+  }
+}
+```
+

docs/api/Search.md

@@ -0,0 +1,523 @@
+# Search queries
+
+The search API allows you to look up a location from a textual description
+or address. Nominatim supports structured and free-form search queries.
+
+The search query may also contain
+[special phrases](https://wiki.openstreetmap.org/wiki/Nominatim/Special_Phrases)
+which are translated into specific OpenStreetMap (OSM) tags (e.g. Pub => `amenity=pub`).
+This can be used to narrow down the kind of objects to be returned.
+
+!!! note
+    Special phrases are not suitable to query all objects of a certain type in an
+    area. Nominatim will always just return a collection of the best matches. To
+    download OSM data by object type, use the [Overpass API](https://overpass-api.de/).
+
+## Endpoint
+
+The search API has the following format:
+
+```
+   https://nominatim.openstreetmap.org/search?<params>
+```
+
+!!! danger "Deprecation warning"
+    The API can also be used with the URL
+    `https://nominatim.openstreetmap.org/search.php`. This is now deprecated
+    and will be removed in future versions.
+
+The query term can be given in two different forms: free-form or structured.
+
+### Free-form query
+
+| Parameter | Value |
+|-----------| ----- |
+| q         | Free-form query string to search for |
+
+In this form, the query can be unstructured.
+Free-form queries are processed first left-to-right and then right-to-left if that fails. So you may search for
+[pilkington avenue, birmingham](https://nominatim.openstreetmap.org/search?q=pilkington+avenue,birmingham) as well as for
+[birmingham, pilkington avenue](https://nominatim.openstreetmap.org/search?q=birmingham,+pilkington+avenue).
+Commas are optional, but improve performance by reducing the complexity of the search.
+
+The free-form may also contain special phrases to describe the type of
+place to be returned or a coordinate to search close to a position.
+
+### Structured query
+
+| Parameter  | Value |
+|----------- | ----- |
+| amenity    | name and/or type of POI |
+| street     | housenumber and streetname |
+| city       | city |
+| county     | county |
+| state      | state |
+| country    | country |
+| postalcode | postal code |
+
+The structured form of the search query allows to lookup up an address
+that is already split into its components. Each parameter represents a field
+of the address. All parameters are optional. You should only use the ones
+that are relevant for the address you want to geocode.
+
+!!! Attention
+    Cannot be combined with the `q=<query>` parameter. Newer versions of
+    the API will return an error if you do so. Older versions simply return
+    unexpected results.
+
+## Parameters
+
+The following parameters can be used to further restrict the search and
+change the output. They are usable for both forms of the search query.
+
+### Output format
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| format    | one of: `xml`, `json`, `jsonv2`, `geojson`, `geocodejson` | `jsonv2` |
+
+See [Place Output Formats](Output.md) for details on each format.
+
+!!! note
+    The Nominatim service at
+    [https://nominatim.openstreetmap.org](https://nominatim.openstreetmap.org)
+    has a different default behaviour for historical reasons. When the
+    `format` parameter is omitted, the request will be forwarded to the Web UI.
+
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| json_callback | function name | _unset_ |
+
+When given, then JSON output will be wrapped in a callback function with
+the given name. See [JSONP](https://en.wikipedia.org/wiki/JSONP) for more
+information.
+
+Only has an effect for JSON output formats.
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| limit     | number | 10 |
+
+Limit the maximum number of returned results. Cannot be more than 40.
+Nominatim may decide to return less results than given, if additional
+results do not sufficiently match the query.
+
+
+### Output details
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| addressdetails | 0 or 1 | 0 |
+
+When set to 1, include a breakdown of the address into elements.
+The exact content of the address breakdown depends on the output format.
+
+!!! tip
+    If you are interested in a stable classification of address categories
+    (suburb, city, state, etc), have a look at the `geocodejson` format.
+    All other formats return classifications according to OSM tagging.
+    There is a much larger set of categories and they are not always consistent,
+    which makes them very hard to work with.
+
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| extratags | 0 or 1 | 0 |
+
+When set to 1, the response include any additional information in the result
+that is available in the database, e.g. wikipedia link, opening hours.
+
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| namedetails | 0 or 1 | 0 |
+
+When set to 1, include a full list of names for the result. These may include
+language variants, older names, references and brand.
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| entrances | 0 or 1 | 0 |
+
+When set to 1, include the tagged entrances in the result.
+
+
+### Language of results
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| accept-language | browser language string | content of "Accept-Language" HTTP header |
+
+Preferred language order for showing search results. This may either be
+a simple comma-separated list of language codes or have the same format
+as the ["Accept-Language" HTTP header](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Accept-Language).
+
+!!! tip
+    First-time users of Nominatim tend to be confused that they get different
+    results when using Nominatim in the browser versus in a command-line tool
+    like wget or curl. The command-line tools
+    usually don't send any Accept-Language header, prompting Nominatim
+    to show results in the local language. Browsers on the contrary always
+    send the currently chosen browser language.
+
+### Result restriction
+
+There are two ways to influence the results. *Filters* exclude certain
+kinds of results completely. *Boost parameters* only change the order of the
+results and thus give a preference to some results over others.
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| countrycodes | comma-separated list of country codes | _unset_ |
+
+Filter that limits the search results to one or more countries.
+The country code must be the
+[ISO 3166-1alpha2](https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2) code
+of the country, e.g. `gb` for the United Kingdom, `de` for Germany.
+
+Each place in Nominatim is assigned to one country code based
+on OSM country boundaries. In rare cases a place may not be in any country
+at all, for example, when it is in international waters. These places are
+also excluded when the filter is set.
+
+!!! Note
+    This parameter should not be confused with the 'country' parameter of
+    the structured query. The 'country' parameter contains a search term
+    and will be handled with some fuzziness. The `countrycodes` parameter
+    is a hard filter and as such should be preferred. Having both parameters
+    in the same query will work. If the parameters contradict each other,
+    the search will come up empty.
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| layer     | comma-separated list of: `address`, `poi`, `railway`, `natural`, `manmade` | _unset_ (no restriction) |
+
+The layer filter allows to select places by themes.
+
+The `address` layer contains all places that make up an address:
+address points with house numbers, streets, inhabited places (suburbs, villages,
+cities, states tec.) and administrative boundaries.
+
+The `poi` layer selects all point of interest. This includes classic POIs like
+restaurants, shops, hotels but also less obvious features like recycling bins,
+guideposts or benches.
+
+The `railway` layer includes railway infrastructure like tracks.
+Note that in Nominatim's standard configuration, only very few railway
+features are imported into the database.
+
+The `natural` layer collects features like rivers, lakes and mountains while
+the `manmade` layer functions as a catch-all for features not covered by the
+other layers.
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| featureType | one of: `country`, `state`, `city`, `settlement` | _unset_ |
+
+The featureType allows to have a more fine-grained selection for places
+from the address layer. Results can be restricted to places that make up
+the 'state', 'country' or 'city' part of an address. A featureType of
+`settlement` selects any human inhabited feature from 'state' down to
+'neighbourhood'.
+
+When featureType is set, then results are automatically restricted
+to the address layer (see above).
+
+!!! tip
+    Instead of using the featureType filters `country`, `state` or `city`,
+    you can also use a structured query without the finer-grained parameters
+    amenity or street.
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| exclude_place_ids | comma-separated list of place ids |
+
+If you do not want certain OSM objects to appear in the search
+result, give a comma separated list of the `place_id`s you want to skip.
+This can be used to retrieve additional search results. For example, if a
+previous query only returned a few results, then including those here would
+cause the search to return other, less accurate, matches (if possible).
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| viewbox   | `<x1>,<y1>,<x2>,<y2>` | _unset_ |
+
+Boost parameter which focuses the search on the given area.
+Any two corner points of the box are accepted as long as they make a proper
+box. `x` is longitude, `y` is latitude.
+
+| Parameter | Value  | Default |
+|-----------| -----  | ------- |
+| bounded   | 0 or 1 | 0       |
+
+When set to 1, then it turns the 'viewbox' parameter (see above) into
+a filter parameter, excluding any results outside the viewbox.
+
+When `bounded=1` is given and the viewbox is small enough, then an amenity-only
+search is allowed. Give the special keyword for the amenity in square
+brackets, e.g. `[pub]` and a selection of objects of this type is returned.
+There is no guarantee that the result returns all objects in the area.
+
+
+### Polygon output
+
+| Parameter | Value  | Default |
+|-----------| -----  | ------- |
+| polygon_geojson | 0 or 1 | 0 |
+| polygon_kml     | 0 or 1 | 0 |
+| polygon_svg     | 0 or 1 | 0 |
+| polygon_text    | 0 or 1 | 0 |
+
+Add the full geometry of the place to the result output. Output formats
+in GeoJSON, KML, SVG or WKT are supported. Only one of these
+options can be used at a time.
+
+| Parameter | Value  | Default |
+|-----------| -----  | ------- |
+| polygon_threshold | floating-point number | 0.0 |
+
+When one of the polygon_* outputs is chosen, return a simplified version
+of the output geometry. The parameter describes the
+tolerance in degrees with which the geometry may differ from the original
+geometry. Topology is preserved in the geometry.
+
+### Other
+
+| Parameter | Value  | Default |
+|-----------| -----  | ------- |
+| email     | valid email address | _unset_ |
+
+If you are making large numbers of request please include an appropriate email
+address to identify your requests. See Nominatim's
+[Usage Policy](https://operations.osmfoundation.org/policies/nominatim/) for more details.
+
+| Parameter | Value  | Default |
+|-----------| -----  | ------- |
+| dedupe    | 0 or 1 | 1       |
+
+Sometimes you have several objects in OSM identifying the same place or
+object in reality. The simplest case is a street being split into many
+different OSM ways due to different characteristics. Nominatim will
+attempt to detect such duplicates and only return one match. Setting
+this parameter to 0 disables this deduplication mechanism and
+ensures that all results are returned.
+
+| Parameter | Value  | Default |
+|-----------| -----  | ------- |
+| debug     | 0 or 1 | 0       |
+
+Output assorted developer debug information. Data on internals of Nominatim's
+"search loop" logic, and SQL queries. The output is HTML format.
+This overrides the specified machine readable format.
+
+
+## Examples
+
+
+##### XML with KML polygon
+
+* [https://nominatim.openstreetmap.org/search?q=135+pilkington+avenue,+birmingham&format=xml&polygon_kml=1&addressdetails=1](https://nominatim.openstreetmap.org/search?q=135+pilkington+avenue,+birmingham&format=xml&polygon_kml=1&addressdetails=1)
+
+```xml
+<?xml version="1.0" encoding="UTF-8" ?>
+<searchresults timestamp="Tue, 08 Aug 2023 15:45:41 +00:00"
+               attribution="Data © OpenStreetMap contributors, ODbL 1.0. http://osm.org/copyright"
+               querystring="135 pilkington avenue, birmingham"
+               more_url="https://nominatim.openstreetmap.org/search?q=135+pilkington+avenue%2C+birmingham&amp;polygon_kml=1&amp;addressdetails=1&amp;limit=20&amp;exclude_place_ids=125279639&amp;format=xml"
+               exclude_place_ids="125279639">
+  <place place_id="125279639"
+         osm_type="way"
+         osm_id="90394480"
+         lat="52.5487921"
+         lon="-1.8164308"
+         boundingbox="52.5487473,52.5488481,-1.8165130,-1.8163464"
+         place_rank="30"
+         address_rank="30"
+         display_name="135, Pilkington Avenue, Maney, Sutton Coldfield, Wylde Green, Birmingham, West Midlands Combined Authority, England, B72 1LH, United Kingdom"
+         class="building"
+         type="residential"
+         importance="9.999999994736442e-08">
+    <geokml>
+      <Polygon>
+        <outerBoundaryIs>
+          <LinearRing>
+            <coordinates>-1.816513,52.5487566 -1.816434,52.5487473 -1.816429,52.5487629 -1.8163717,52.5487561 -1.8163464,52.5488346 -1.8164599,52.5488481 -1.8164685,52.5488213 -1.8164913,52.548824 -1.816513,52.5487566</coordinates>
+          </LinearRing>
+        </outerBoundaryIs>
+      </Polygon>
+    </geokml>
+    <house_number>135</house_number>
+    <road>Pilkington Avenue</road>
+    <hamlet>Maney</hamlet>
+    <town>Sutton Coldfield</town>
+    <village>Wylde Green</village>
+    <city>Birmingham</city>
+    <ISO3166-2-lvl8>GB-BIR</ISO3166-2-lvl8>
+    <state_district>West Midlands Combined Authority</state_district>
+    <state>England</state>
+    <ISO3166-2-lvl4>GB-ENG</ISO3166-2-lvl4>
+    <postcode>B72 1LH</postcode>
+    <country>United Kingdom</country>
+    <country_code>gb</country_code>
+  </place>
+</searchresults>
+```
+
+##### JSON with SVG polygon
+
+[https://nominatim.openstreetmap.org/search?q=Unter%20den%20Linden%201%20Berlin&format=json&addressdetails=1&limit=1&polygon_svg=1](https://nominatim.openstreetmap.org/search?q=Unter%20den%20Linden%201%20Berlin&format=json&addressdetails=1&limit=1&polygon_svg=1)
+
+```json
+[
+  {
+    "address": {
+      "ISO3166-2-lvl4": "DE-BE",
+      "borough": "Mitte",
+      "city": "Berlin",
+      "country": "Deutschland",
+      "country_code": "de",
+      "historic": "Kommandantenhaus",
+      "house_number": "1",
+      "neighbourhood": "Friedrichswerder",
+      "postcode": "10117",
+      "road": "Unter den Linden",
+      "suburb": "Mitte"
+    },
+    "boundingbox": [
+      "52.5170798",
+      "52.5173311",
+      "13.3975116",
+      "13.3981577"
+    ],
+    "class": "historic",
+    "display_name": "Kommandantenhaus, 1, Unter den Linden, Friedrichswerder, Mitte, Berlin, 10117, Deutschland",
+    "importance": 0.8135042058306902,
+    "lat": "52.51720765",
+    "licence": "Data © OpenStreetMap contributors, ODbL 1.0. https://osm.org/copyright",
+    "lon": "13.397834399325466",
+    "osm_id": 15976890,
+    "osm_type": "way",
+    "place_id": 108681845,
+    "svg": "M 13.3975116 -52.5172905 L 13.397549 -52.5170798 13.397715 -52.5170906 13.3977122 -52.5171064 13.3977392 -52.5171086 13.3977417 -52.5170924 13.3979655 -52.5171069 13.3979623 -52.5171233 13.3979893 -52.5171248 13.3979922 -52.5171093 13.3981577 -52.5171203 13.398121 -52.5173311 13.3978115 -52.5173103 Z",
+    "type": "house"
+  }
+]
+```
+
+##### JSON with address details
+
+[https://nominatim.openstreetmap.org/search?addressdetails=1&q=bakery+in+berlin+wedding&format=jsonv2&limit=1](https://nominatim.openstreetmap.org/search?addressdetails=1&q=bakery+in+berlin+wedding&format=jsonv2&limit=1)
+
+```json
+[
+  {
+    "address": {
+      "ISO3166-2-lvl4": "DE-BE",
+      "borough": "Mitte",
+      "city": "Berlin",
+      "country": "Deutschland",
+      "country_code": "de",
+      "neighbourhood": "Sprengelkiez",
+      "postcode": "13347",
+      "road": "Lindower Straße",
+      "shop": "Ditsch",
+      "suburb": "Wedding"
+    },
+    "addresstype": "shop",
+    "boundingbox": [
+      "52.5427201",
+      "52.5427654",
+      "13.3668619",
+      "13.3669442"
+    ],
+    "category": "shop",
+    "display_name": "Ditsch, Lindower Straße, Sprengelkiez, Wedding, Mitte, Berlin, 13347, Deutschland",
+    "importance": 9.99999999995449e-06,
+    "lat": "52.54274275",
+    "licence": "Data © OpenStreetMap contributors, ODbL 1.0. http://osm.org/copyright",
+    "lon": "13.36690305710228",
+    "name": "Ditsch",
+    "osm_id": 437595031,
+    "osm_type": "way",
+    "place_id": 204751033,
+    "place_rank": 30,
+    "type": "bakery"
+  }
+]
+```
+
+##### GeoJSON
+
+[https://nominatim.openstreetmap.org/search?q=17+Strada+Pictor+Alexandru+Romano%2C+Bukarest&format=geojson](https://nominatim.openstreetmap.org/search?q=17+Strada+Pictor+Alexandru+Romano%2C+Bukarest&format=geojson)
+
+```json
+{
+  "type": "FeatureCollection",
+  "licence": "Data © OpenStreetMap contributors, ODbL 1.0. https://osm.org/copyright",
+  "features": [
+    {
+      "type": "Feature",
+      "properties": {
+        "place_id": "35811445",
+        "osm_type": "node",
+        "osm_id": "2846295644",
+        "display_name": "17, Strada Pictor Alexandru Romano, Bukarest, Bucharest, Sector 2, Bucharest, 023964, Romania",
+        "place_rank": "30",
+        "category": "place",
+        "type": "house",
+        "importance": 0.62025
+      },
+      "bbox": [
+        26.1156689,
+        44.4354754,
+        26.1157689,
+        44.4355754
+      ],
+      "geometry": {
+        "type": "Point",
+        "coordinates": [
+          26.1157189,
+          44.4355254
+        ]
+      }
+    }
+  ]
+}
+```
+
+##### GeocodeJSON
+
+[https://nominatim.openstreetmap.org/search?q=%CE%91%CE%B3%CE%AF%CE%B1+%CE%A4%CF%81%CE%B9%CE%AC%CE%B4%CE%B1%2C+%CE%91%CE%B4%CF%89%CE%BD%CE%B9%CE%B4%CE%BF%CF%82%2C+Athens%2C+Greece&format=geocodejson](https://nominatim.openstreetmap.org/search?q=%CE%91%CE%B3%CE%AF%CE%B1+%CE%A4%CF%81%CE%B9%CE%AC%CE%B4%CE%B1%2C+%CE%91%CE%B4%CF%89%CE%BD%CE%B9%CE%B4%CE%BF%CF%82%2C+Athens%2C+Greece&format=geocodejson)
+
+```json
+{
+  "type": "FeatureCollection",
+  "geocoding": {
+    "version": "0.1.0",
+    "attribution": "Data © OpenStreetMap contributors, ODbL 1.0. https://osm.org/copyright",
+    "licence": "ODbL",
+    "query": "Αγία Τριάδα, Αδωνιδος, Athens, Greece"
+  },
+  "features": [
+    {
+      "type": "Feature",
+      "properties": {
+        "geocoding": {
+          "type": "place_of_worship",
+          "label": "Αγία Τριάδα, Αδωνιδος, Άγιος Νικόλαος, 5º Δημοτικό Διαμέρισμα Αθηνών, Athens, Municipality of Athens, Regional Unit of Central Athens, Region of Attica, Attica, 11472, Greece",
+          "name": "Αγία Τριάδα",
+          "admin": null
+        }
+      },
+      "geometry": {
+        "type": "Point",
+        "coordinates": [
+          23.72949633941,
+          38.0051697
+        ]
+      }
+    }
+  ]
+}
+```

docs/api/Status.md

@@ -0,0 +1,71 @@
+# Status
+
+Report on the state of the service and database. Useful for checking if the
+service is up and running. The JSON output also reports
+when the database was last updated.
+
+## Endpoint
+
+The status API has the following format:
+
+```
+https://nominatim.openstreetmap.org/status
+```
+
+!!! danger "Deprecation warning"
+    The API can also be used with the URL
+    `https://nominatim.openstreetmap.org/status.php`. This is now deprecated
+    and will be removed in future versions.
+
+
+## Parameters
+
+The status endpoint takes a single optional parameter:
+
+| Parameter | Value | Default |
+|-----------| ----- | ------- |
+| format    | one of: `text`, `json` | 'text' |
+
+Selects the output format. See below.
+
+
+## Output
+
+#### Text format
+
+When everything is okay, a status code 200 is returned and a simple message: `OK`
+
+On error it will return HTTP status code 500 and print a detailed error message, e.g.
+`ERROR: Database connection failed`.
+
+
+
+#### JSON format
+
+Always returns a HTTP code 200, when the status call could be executed.
+
+On success a JSON dictionary with the following structure is returned:
+
+```json
+  {
+      "status": 0,
+      "message": "OK",
+      "data_updated": "2020-05-04T14:47:00+00:00",
+      "software_version": "3.6.0-0",
+      "database_version": "3.6.0-0"
+  }
+```
+
+The `software_version` field contains the version of Nominatim used to serve
+the API. The `database_version` field contains the version of the data format
+in the database.
+
+On error will return a shorter JSON dictionary with the error message
+and status only, e.g.
+
+```json
+   {
+       "status": 700,
+       "message": "Database connection failed"
+   }
+```

docs/bash2md.sh

@@ -1,7 +0,0 @@
-#!/bin/sh
-#
-# Extract markdown-formatted documentation from a source file
-#
-# Usage: bash2md.sh <infile> <outfile>
-
-sed '/^#!/d;s:^#\( \|$\)::;s/.*#DOCS://' $1 > $2

docs/customize/Country-Settings.md

@@ -0,0 +1,149 @@
+# Customizing Per-Country Data
+
+Whenever an OSM is imported into Nominatim, the object is first assigned
+a country. Nominatim can use this information to adapt various aspects of
+the address computation to the local customs of the country. This section
+explains how country assignment works and the principal per-country
+localizations.
+
+## Country assignment
+
+Countries are assigned on the basis of country data from the OpenStreetMap
+input data itself. Countries are expected to be tagged according to the
+[administrative boundary schema](https://wiki.openstreetmap.org/wiki/Tag:boundary%3Dadministrative):
+a OSM relation with `boundary=administrative` and `admin_level=2`. Nominatim
+uses the country code to distinguish the countries.
+
+If there is no country data available for a point, then Nominatim uses the
+fallback data imported from `data/country_osm_grid.sql.gz`. This was computed
+from OSM data as well but is guaranteed to cover all countries.
+
+Some OSM objects may also be located outside any country, for example a buoy
+in the middle of the ocean. These object do not get any country assigned and
+get a default treatment when it comes to localized handling of data.
+
+## Per-country settings
+
+### Global country settings
+
+The main place to configure settings per country is the file
+`settings/country_settings.yaml`. This file has one section per country that
+is recognised by Nominatim. Each section is tagged with the country code
+(in lower case) and contains the different localization information. Only
+countries which are listed in this file are taken into account for computations.
+
+For example, the section for Andorra looks like this:
+
+```
+    partition: 35
+    languages: ca
+    names: !include country-names/ad.yaml
+    postcode:
+      pattern: "(ddd)"
+      output: AD\1
+```
+
+The individual settings are described below.
+
+#### `partition`
+
+Nominatim internally splits the data into multiple tables to improve
+performance. The partition number tells Nominatim into which table to put
+the country. This is purely internal management and has no effect on the
+output data.
+
+The default is to have one partition per country.
+
+#### `languages`
+
+A comma-separated list of ISO-639 language codes of default languages in the
+country. These are the languages used in name tags without a language suffix.
+Note that this is not necessarily the same as the list of official languages
+in the country. There may be officially recognised languages in a country
+which are only ever used in name tags with the appropriate language suffixes.
+Conversely, a non-official language may appear a lot in the name tags, for
+example when used as an unofficial Lingua Franca.
+
+List the languages in order of frequency of appearance with the most frequently
+used language first. It is not recommended to add languages when there are only
+very few occurrences.
+
+If only one language is listed, then Nominatim will 'auto-complete' the
+language of names without an explicit language-suffix.
+
+#### `names`
+
+List of names of the country and its translations. These names are used as
+a baseline. It is always possible to search countries by the given names, no
+matter what other names are in the OSM data. They are also used as a fallback
+when a needed translation is not available.
+
+!!! Note
+    The list of names per country is currently fairly large because Nominatim
+    supports translations in many languages per default. That is why the
+    name lists have been separated out into extra files. You can find the
+    name lists in the file `settings/country-names/<country code>.yaml`.
+    The names section in the main country settings file only refers to these
+    files via the special `!include` directive.
+
+#### `postcode`
+
+Describes the format of the postcode that is in use in the country.
+
+When a country has no official postcodes, set this to no. Example:
+
+```
+ae:
+    postcode: no
+```
+
+When a country has a postcode, you need to state the postcode pattern and
+the default output format. Example:
+
+```
+bm:
+    postcode:
+      pattern: "(ll)[ -]?(dd)"
+      output: \1 \2
+```
+
+The **pattern** is a regular expression that describes the possible formats
+accepted as a postcode. The pattern follows the standard syntax for
+[regular expressions in Python](https://docs.python.org/3/library/re.html#regular-expression-syntax)
+with two extra shortcuts: `d` is a shortcut for a single digit([0-9])
+and `l` for a single ASCII letter ([A-Z]).
+
+Use match groups to indicate groups in the postcode that may optionally be
+separated with a space or a hyphen.
+
+For example, the postcode for Bermuda above always consists of two letters
+and two digits. They may optionally be separated by a space or hyphen. That
+means that Nominatim will consider `AB56`, `AB 56` and `AB-56` spelling variants
+for one and the same postcode.
+
+Never add the country code in front of the postcode pattern. Nominatim will
+automatically accept variants with a country code prefix for all postcodes.
+
+The **output** field is an optional field that describes what the canonical
+spelling of the postcode should be. The format is the
+[regular expression expand syntax](https://docs.python.org/3/library/re.html#re.Match.expand) referring back to the bracket groups in the pattern.
+
+Most simple postcodes only have one spelling variant. In that case, the
+**output** can be omitted. The postcode will simply be used as is.
+
+In the Bermuda example above, the canonical spelling would be to have a space
+between letters and digits.
+
+!!! Warning
+    When your postcode pattern covers multiple variants of the postcode, then
+    you must explicitly state the canonical output or Nominatim will not
+    handle the variations correctly.
+
+### Other country-specific configuration
+
+There are some other configuration files where you can set localized settings
+according to the assigned country. These are:
+
+ * [Place ranking configuration](Ranking.md)
+
+Please see the linked documentation sections for more information.

docs/customize/Import-Styles.md

@@ -0,0 +1,623 @@
+# Configuring the Import of OSM data
+
+In the very first step of a Nominatim import, OSM data is loaded into the
+database. Nominatim uses [osm2pgsql](https://osm2pgsql.org) for this task.
+It comes with a [flex style](https://osm2pgsql.org/doc/manual.html#the-flex-output)
+specifically tailored to filter and convert OSM data into Nominatim's
+internal data representation. Nominatim ships with a few preset
+configurations for this import, each results in a geocoding database of
+different detail. The
+[Import section](../admin/Import.md#filtering-imported-data) explains
+these default configurations in detail.
+
+If you want to have more control over which OSM data is added to the database,
+you can also create your own custom style. Create a new lua style file, put it
+into your project directory and then set `NOMINATIM_IMPORT_STYLE` to the name
+of the file. Custom style files can be used to modify the existing preset
+configurations or to implement your own configuration from scratch.
+
+The remainder of the page describes how the flex style works and how to
+customize it.
+
+## The `flex-base` lua module
+
+The core of Nominatim's flex import configuration is the `flex-base` module.
+It defines the table layout used by Nominatim and provides standard
+implementations for the import callbacks that help with customizing
+how OSM tags are used by Nominatim.
+
+Every custom style must include this module to make sure that the correct
+tables are created. Thus start your custom style as follows:
+
+``` lua
+local flex = require('flex-base')
+```
+
+### Using preset configurations
+
+If you want to start with one of the existing presets, then you can import
+its settings using the `load_topic()` function:
+
+``` lua
+local flex = require('flex-base')
+
+flex.load_topic('streets')
+```
+
+The `load_topic` function takes an optional second configuration
+parameter. The available options are explained in the
+[themepark section](#using-osm2pgsql-themepark).
+
+Available topics are: `admin`, `street`, `address`, `full`. These topic
+correspond to the [import styles](../admin/Import.md#filtering-imported-data)
+you can choose during import. To start with the 'extratags' style, use the
+`full` topic with the appropriate config parameter:
+
+``` lua
+flex.load_topic('full', {with_extratags = true})
+```
+
+!!! note
+    You can also directly import the preset style files, e.g.
+    `local flex = require('import-street')`. It is not possible to
+    set extra configuration this way.
+
+### How processing works
+
+When Nominatim processes an OSM object, it looks for four kinds of tags:
+The _main tags_ classify what kind of place the OSM object represents. One
+OSM object can have more than one main tag. In such case one database entry
+is created for each main tag. _Name tags_ represent searchable names of the
+place. _Address tags_ are used to compute the address information of the place.
+Address tags are used for searching and for creating a display name of the place.
+_Extra tags_ are any tags that are not directly related to search but
+contain interesting additional information. These are just saved in the database
+and may be returned with the result [on request](../api/Search.md#output-details).
+
+!!! danger
+    Some tags in the extratags category are used by Nominatim to better
+    classify the place. These tags will always be added, independent of
+    any settings in the style.
+
+Configuring the style means deciding which key and/or key/value is used
+in which category.
+
+## Changing the recognized tags
+
+The flex style offers a number of functions to set the classification of
+each OSM tag. Most of these functions can also take a preset string instead
+of a tag description. These presets describe common configurations that
+are also used in the definition of the predefined styles. This section
+lists the configuration functions and the accepted presets.
+
+#### Key match lists
+
+Some of the following functions take _key match lists_. These lists can
+contain three kinds of strings to match against tag keys:
+A string that ends in an asterisk `*` is a prefix match and accordingly matches
+against any key that starts with the given string (minus the `*`). 
+A suffix match can be defined similarly with a string that starts with a `*`.
+Any other string is matched exactly against tag keys.
+
+###  Main tags
+
+`set/modify_main_tags()` allow to define which tags are used as main tags. It
+takes a lua table parameter which defines for keys and key/value
+combinations, how they are classified.
+
+The following classifications are recognized:
+
+| classification  | meaning |
+| :-------------- | :------ |
+| always          | Unconditionally use this tag as a main tag. |
+| named           | Consider as main tag, when the object has a primary name (see [names](#name-tags) below) |
+| named_with_key  | Consider as main tag, when the object has a primary name with a domain prefix. For example, if the main tag is  `bridge=yes`, then it will only be added as an extra entry, if there is a tag `bridge:name[:XXX]` for the same object. If this property is set, all names that are not domain-specific are ignored. |
+| fallback        | Consider as main tag only when no other main tag was found. Fallback always implies `named`, i.e. fallbacks are only tried for objects with primary names. |
+| postcode_area   | Tag indicates a postcode area. Copy area into the table of postcodes but only when the object is a relation and has a postcode tagged. |
+| delete          | Completely ignore the tag in any further processing |
+| extra           | Move the tag to extratags and then ignore it for further processing |
+| `<function>`| Advanced handling, see [below](#advanced-main-tag-handling) |
+
+Each key in the table parameter defines an OSM tag key. The value may
+be directly a classification as described above. Then the tag will
+be considered a main tag for any possible value that is not further defined.
+To further restrict which values are acceptable, give a table with the
+permitted values and their kind of main tag. If the table contains a simple
+value without key, then this is used as default for values that are not listed.
+
+`set_main_tags()` will completely replace the current main tag configuration
+with the new configuration. `modify_main_tags()` will merge the new
+configuration with the existing one. Merging is done at value level.
+For example, when the current setting is `highway = {'always', primary = 'named'}`,
+then `set_main_tags{highway = 'delete'}` will result in a rule
+`highway = {'delete', primary = 'named'}`.
+
+!!! example
+    ``` lua
+    local flex = require('import-full')
+
+    flex.set_main_tags{
+        boundary = {administrative = 'named'},
+        highway = {'always', street_lamp = 'named', no = 'delete'},
+        landuse = 'fallback'
+    }
+    ```
+
+    In this example an object with a `boundary` tag will only be included
+    when it has a value of `administrative`. Objects with `highway` tags are
+    always included with two exceptions: the troll tag `highway=no` is
+    deleted on the spot. And when the value is `street_lamp` then the object
+    must also have a name, to be included. Finally, if a `landuse` tag is
+    present then it will be used independently of the concrete value when
+    neither boundary nor highway tags were found and the object is named.
+
+##### Presets
+
+| Name   | Description |
+| :----- | :---------- |
+| admin  | Basic tag set collecting places and administrative boundaries. This set is needed also to ensure proper address computation and should therefore always be present. You can disable selected place types like `place=locality` after adding this set, if they are not relevant for your use case. |
+| all_boundaries | Extends the set of recognized boundaries and places to all available ones. |
+| natural | Tags for natural features like rivers and mountain peaks. |
+| street/default | Tags for streets. Major streets are always included, minor ones only when they have a name. |
+| street/car | Tags for all streets that can be used by a motor vehicle. |
+| street/all | Includes all highway features named and unnamed. |
+| poi/delete | Adds most POI features with and without name. Some frequent but very domain-specific values are excluded by deleting them. |
+| poi/extra | Like 'poi/delete' but excluded values are moved to extratags. |
+
+
+##### Advanced main tag handling
+
+The groups described above are in fact only a preset for a filtering function
+that is used to make the final decision how a pre-selected main tag is entered
+into Nominatim's internal table. To further customize handling you may also
+supply your own filtering function.
+
+The function takes up to three parameters: a Place object of the object
+being processed, the key of the main tag and the value of the main tag.
+The function may return one of three values:
+
+* `nil` or `false` causes the entry to be ignored
+* the Place object causes the place to be added as is
+* `Place.copy(names=..., address=..., extratags=...) causes the
+  place to be enter into the database but with name/address/extratags
+  set to the given different values.
+
+The Place object has some read-only values that can be used to determine
+the handling:
+
+* **object** is the original OSM object data handed in by osm2pgsql
+* **admin_level** is the content of the admin_level tag, parsed into an integer and normalized to a value between 0 and 15
+* **has_name** is a boolean indicating if the object has a primary name tag
+* **names** is a table with the collected list of name tags
+* **address** is a table with the collected list of address tags
+* **extratags** is a table with the collected list of additional tags to save
+
+!!! example
+    ``` lua
+    local flex = require('flex-base')
+
+    flex.add_topic('street')
+
+    local function no_sidewalks(place, k, v)
+        if place.object.tags.footway == 'sidewalk' then
+            return false
+        end
+
+        -- default behaviour is to have all footways
+        return place
+    end
+
+    flex.modify_main_tags(highway = {'footway' = no_sidewalks}
+    ```
+    This script adds a custom handler for `highway=footway`. It only includes
+    them in the database, when the object doesn't have a tag `footway=sidewalk`
+    indicating that it is just part of a larger street which should already
+    be indexed. Note that it is not necessary to check the key and value
+    of the main tag because the function is only used for the specific
+    main tag.
+
+
+### Ignored tags
+
+The function `ignore_keys()` sets the `delete` classification for keys.
+This function takes a _key match list_ so that it is possible to exclude
+groups of keys.
+
+Note that full matches always take precedence over suffix matches, which
+in turn take precedence over prefix matches.
+
+!!! example
+    ``` lua
+    local flex = require('flex-base')
+
+    flex.add_topic('admin')
+    flex.ignore_keys{'old_name', 'old_name:*'}
+    ```
+
+    This example uses the `admin` preset with the exception that names
+    that are no longer are in current use, are ignored.
+
+##### Presets
+
+| Name     | Description |
+| :-----   | :---------- |
+| metatags | Tags with meta information about the OSM tag like source, notes and import sources. |
+| name     | Non-names that actually describe properties or name parts. These names can throw off search and should always be removed. |
+| address  | Extra `addr:*` tags that are not useful for Nominatim. |
+
+
+### Tags for `extratags`
+
+The function `add_for_extratags()` sets the `extra` classification for keys.
+This function takes a
+_key match list_ so that it is possible to move groups of keys to extratags.
+
+Note that full matches always take precedence over suffix matches, which
+in turn take precedence over prefix matches.
+
+!!! example
+    ``` lua
+    local flex = require('flex-base')
+
+    flex.add_topic('street')
+    flex.add_for_extratags{'surface', 'access', 'vehicle', 'maxspeed'}
+    ```
+
+    This example uses the `street` preset but adds a couple of tags that
+    are of interest about the condition of the street.
+
+##### Presets
+
+Accepts all [presets from ignored tags](#presets_1).
+
+### General pre-filtering
+
+_(deprecated)_ `set_prefilters()` allows to set the `delete` and `extra`
+classification for main tags.
+
+This function removes all previously set main tags with `delete` and `extra`
+classification and then adds the newly defined tags.
+
+`set_prefilters()` takes a table with four optional fields:
+
+* __delete_keys__ is a _key match list_ for tags that should be deleted
+* __delete_tags__ contains a table of tag keys pointing to a list of tag
+  values. Tags with matching key/value pairs are deleted.
+* __extra_keys__ is a _key match list_ for tags which should be saved into
+  extratags
+* __extra_tags__ contains a table of tag keys pointing to a list of tag
+  values. Tags with matching key/value pairs are moved to extratags.
+
+!!! danger "Deprecation warning"
+    Use of this function should be replaced with `modify_main_tags()` to
+    set the data from `delete_tags` and `extra_tags`, with `ignore_keys()`
+    for the `delete_keys` parameter and with `add_for_extratags()` for the
+    `extra_keys` parameter.
+
+### Name tags
+
+`set/modify_name_tags()` allow to define the tags used for naming places. Name tags
+can only be selected by their keys. The import script distinguishes
+between primary and auxiliary names. A primary name is the given name of
+a place. Having a primary name makes a place _named_. This is important
+for main tags that are only included when a name is present. Auxiliary names
+are identifiers like references. They may be searched for but should not
+be included on their own.
+
+The functions take a table with two optional fields `main` and `extra`.
+They take _key match lists_ for primary and auxiliary names respectively.
+A third field `house` can contain tags for names that appear in place of
+house numbers in addresses. This field can only contain complete key names.
+'house tags' are special in that they cause the OSM object to be added to
+the database independently of the presence of other main tags.
+
+`set_name_tags()` overwrites the current configuration, while
+`modify_name_tags()` replaces the fields that are given. (Be aware that
+the fields are replaced as a whole. `main = {'foo_name'}` will cause
+`foo_name` to become the only recognized primary name. Any previously
+defined primary names are forgotten.)
+
+!!! example
+    ``` lua
+    local flex = require('flex-base')
+
+    flex.set_main_tags{highway = {traffic_light = 'named'}}
+    flex.set_name_tags{main = {'name', 'name:*'},
+                       extra = {'ref'}
+                      }
+    ```
+
+    This example creates a search index over traffic lights but will
+    only include those that have a common name and not those which just
+    have some reference ID from the city.
+
+##### Presets
+
+| Name     | Description |
+| :-----   | :---------- |
+| core     | Basic set of recognized names for all places. |
+| address  | Additional names useful when indexing full addresses. |
+| poi      | Extended set of recognized names for pois. Use on top of the core set. |
+
+### Address tags
+
+`set/modify_address_tags()` defines the tags that will be used to build
+up the address of an object. Address tags can only be chosen by their key.
+
+The functions take a table with arbitrary fields, each defining
+a key list or _key match list_. Some fields have a special meaning:
+
+| Field     | Type      | Description |
+| :---------| :-------- | :-----------|
+| main      | key list  | Tags that make a full address object out of the OSM object. This is usually the house number or variants thereof. If a main address tag appears, then the object will always be included, if necessary with a fallback of `place=house`. If the key has a prefix of `addr:` or `is_in:` this will be stripped. |
+| extra     | key match list | Supplementary tags for addresses, tags like `addr:street`, `addr:city` etc. If the key has a prefix of `addr:` or `is_in:` this will be stripped. |
+| interpolation | key list | Tags that identify address interpolation lines. |
+| country   | key match list | Tags that may contain the country the place is in. The first found value with a two-letter code will be accepted, all other values are discarded. |
+| _other_   | key match list | Summary field. If a key matches the key match list, then its value will be added to the address tags with the name of the field as key. If multiple tags match, then an arbitrary one wins. |
+
+`set_address_tags()` overwrites the current configuration, while
+`modify_address_tags()` replaces the fields that are given. (Be aware that
+the fields are replaced as a whole.)
+
+!!! example
+    ``` lua
+    local flex = require('import-full')
+
+    flex.set_address_tags{
+        main = {'addr:housenumber'},
+        extra = {'addr:*'},
+        postcode = {'postal_code', 'postcode', 'addr:postcode'},
+        country = {'country_code', 'ISO3166-1'}
+    }
+    ```
+
+    In this example all tags which begin with `addr:` will be saved in
+    the address tag list. If one of the tags is `addr:housenumber`, the
+    object will fall back to be entered as a `place=house` in the database
+    unless there is another interested main tag to be found.
+
+    Tags with keys `country_code` and `ISO3166-1` are saved with their
+    value under `country` in the address tag list. The same thing happens
+    to postcodes, they will always be saved under the key `postcode` thus
+    normalizing the multitude of keys that are used in the OSM database.
+
+##### Presets
+
+| Name     | Description |
+| :-----   | :---------- |
+| core     | Basic set of tags needed to recognize address relationship for any place. Always include this. |
+| houses   | Additional set of tags needed to recognize proper addresses |
+
+### Handling of unclassified tags
+
+`set_unused_handling()` defines what to do with tags that remain after all tags
+have been classified using the functions above. There are two ways in
+which the function can be used:
+
+`set_unused_handling(delete_keys = ..., delete_tags = ...)` deletes all
+keys that match the descriptions in the parameters and moves all remaining
+tags into the extratags list.
+
+`set_unused_handling(extra_keys = ..., extra_tags = ...)` moves all tags
+matching the parameters into the extratags list and then deletes the remaining
+tags. For the format of the parameters see the description in `set_prefilters()`
+above.
+
+When no special handling is set, then unused tags will be discarded with one
+exception: place tags are kept in extratags for administrative boundaries.
+When using a custom setting, you should also make sure that the place tag
+is added for extratags.
+
+!!! example
+    ``` lua
+    local flex = require('import-full')
+
+    flex.set_address_tags{
+        main = {'addr:housenumber'},
+        extra = {'addr:*', 'tiger:county'}
+    }
+    flex.set_unused_handling{delete_keys = {'tiger:*'}}
+    ```
+
+    In this example all remaining tags except those beginning with `tiger:`
+    are moved to the extratags list. Note that it is not possible to
+    already delete the tiger tags with `set_prefilters()` because that
+    would remove tiger:county before the address tags are processed.
+
+## Filling additional tables
+
+Most of the OSM objects are saved in the main `place` table for further
+processing. In addition to that, there are some smaller tables that save
+specialised information. The content of these tables can be customized as
+well.
+
+### Entrance table
+
+The table `place_entrance` saves information about OSM nodes that represent
+an entrance. This data is later mingled with buildings and other areas and
+can be returned [on request](../api/Search.md#output-details). The table
+saves the type of entrance as well as a set of custom extra tags.
+
+The function `set_entrance_filter()` can be used to customize the table's
+content.
+
+When called without any parameter, then filling the entrance table will be
+disabled. When called with a preset name, the appropriate preset will be
+applied.
+
+To create a custom configuration, call the function
+with a table with the following fields:
+
+* __main_tags__ is a list of tags that mark an entrance node. The value of the
+  first tag found in the list will be used as the entrance type.
+* __extra_include__ is an optional list of tags to be added to the extratags
+  for this entrance. When left out, all tags except for the ones defined
+  in 'main_tags' will be included. To disable saving of extra tags, set
+  this to the empty list.
+* __extra_exclude__ defines an optional list of tags to drop before including
+  the remaining tags as extratags. Note that the tags defined in 'main_tags'
+  will always be excluded, independently of this setting.
+
+To have even more fine-grained control over the output, you can also hand
+in a callback for processing entrance information. The callback function
+receives a single parameter, the
+[osm2pgsql object](https://osm2pgsql.org/doc/manual.html#processing-callbacks).
+This object itself must not be modified. The callback should return either
+`nil` when the object is not an entrance. Or it returns a table with a
+mandatory `entrance` field containing a string with the type of entrance
+and an optional `extratags` field with a simple key-value table of extra
+information.
+
+##### Presets
+
+| Name     | Description |
+| :-----   | :---------- |
+| default  | Standard configuration used with `full` and `extratags` styles. |
+
+## Customizing osm2pgsql callbacks
+
+osm2pgsql expects the flex style to implement three callbacks, one process
+function per OSM type. If you want to implement special handling for
+certain OSM types, you can override the default implementations provided
+by the flex-base module.
+
+### Enabling additional relation types
+
+OSM relations can represent very diverse
+[types of real-world objects](https://wiki.openstreetmap.org/wiki/Key:type). To
+be able to process them correctly, Nominatim needs to understand how to
+create a geometry for each type. By default, the script knows how to
+process relations of type `multipolygon`, `boundary` and `waterway`. All
+other relation types are ignored.
+
+To add other types relations, set `RELATION_TYPES` for
+the type to the kind of geometry that should be created. The following
+kinds of geometries can be used:
+
+* __relation_as_multipolygon__ creates a (Multi)Polygon from the ways in
+  the relation. If the ways do not form a valid area, then the object is
+  silently discarded.
+* __relation_as_multiline__ creates a (Multi)LineString from the ways in
+  the relations. Ways are combined as much as possible without any regards
+  to their order in the relation.
+
+!!! Example
+    ``` lua
+    local flex = require('import-full')
+
+    flex.RELATION_TYPES['site'] = flex.relation_as_multipolygon
+    ```
+
+    With this line relations of `type=site` will be included in the index
+    according to main tags found. This only works when the site relation
+    resolves to a valid area. Nodes in the site relation are not part of the
+    geometry.
+
+
+### Adding additional logic to processing functions
+
+The default processing functions are also exported by the flex-base module
+as `process_node`, `process_way` and `process_relation`. These can be used
+to implement your own processing functions with some additional processing
+logic.
+
+!!! Example
+    ``` lua
+    local flex = require('import-full')
+
+    function osm2pgsql.process_relation(object)
+        if object.tags.boundary ~= 'administrative' or object.tags.admin_level ~= '2' then
+          flex.process_relation(object)
+        end
+    end
+    ```
+
+    This example discards all country-level boundaries and uses standard
+    handling for everything else. This can be useful if you want to use
+    your own custom country boundaries.
+
+
+### Customizing the main processing function
+
+!!! danger "Deprecation Warning"
+    The style used to allow overwriting the internal processing function
+    `process_tags()`. While this is currently still possible, it is no longer
+    encouraged and may stop working in future versions. The internal
+    `Place` class should now be considered read-only.
+
+
+## Using osm2pgsql-themepark
+
+The Nominatim osm2pgsql style is designed so that it can also be used as
+a theme for [osm2pgsql-themepark](https://osm2pgsql.org/themepark/). This
+makes it easy to combine Nominatim with other projects like
+[openstreetmap-carto](https://github.com/gravitystorm/openstreetmap-carto)
+in the same database.
+
+To set up one of the preset styles, simply include a topic with the same name:
+
+```
+local themepark = require('themepark')
+themepark:add_topic('nominatim/address')
+```
+
+Themepark topics offer two configuration options:
+
+* **street_theme** allows to choose one of the sub topics for streets:
+    * _default_ - include all major streets and named minor paths
+    * _car_ - include all streets physically usable by cars
+    * _all_ - include all major streets and minor paths
+* **with_extratags**, when set to a truthy value, then tags that are
+  not specifically used for address or naming are added to the
+  extratags column
+
+The customization functions described in the
+[Changing recognized tags](#changing-the-recognized-tags) section
+are available from the theme. To access the theme you need to explicitly initialize it.
+
+!!! Example
+    ``` lua
+    local themepark = require('themepark')
+
+    themepark:add_topic('nominatim/full', {with_extratags = true})
+
+    local flex = themepark:init_theme('nominatim')
+
+    flex.modify_main_tags{'amenity' = {
+                           'waste_basket' = 'delete'}
+                      }
+    ```
+    This example uses the full Nominatim configuration but disables
+    importing waste baskets.
+
+You may also write a new configuration from scratch. Simply omit including
+a Nominatim topic and only call the required customization functions.
+
+Customizing the osm2pgsql processing functions as explained
+[above](#adding-additional-logic-to-processing-functions) is not possible
+when running under themepark. Instead include other topics that make the
+necessary modifications or add an additional processor before including
+the Nominatim topic.
+
+!!! Example
+    ``` lua
+    local themepark = require('themepark')
+
+    local function discard_country_boundaries(object)
+        if object.tags.boundary == 'administrative' and object.tags.admin_level == '2' then
+            return 'stop'
+        end
+    end
+
+    themepark:add_proc('relation', discard_country_boundaries)
+    -- Order matters here. The topic needs to be added after the custom callback.
+    themepark:add_topic('nominatim/full', {with_extratags = true})
+    ```
+    Discarding country-level boundaries when running under themepark.
+
+## Changing the style of existing databases
+
+There is usually no issue changing the style of a database that is already
+imported and now kept up-to-date with change files. Just be aware that any
+change in the style applies to updates only. If you want to change the data
+that is already in the database, then a reimport is necessary.

docs/customize/Importance.md

@@ -0,0 +1,55 @@
+## Importance
+
+Search requests can yield multiple results which match equally well with
+the original query. In such case Nominatim needs to order the results
+according to a different criterion: importance. This is a measure for how
+likely it is that a user will search for a given place. This section explains
+the sources Nominatim uses for computing importance of a place and how to
+customize them.
+
+### How importance is computed
+
+The main value for importance is derived from page ranking values for Wikipedia
+pages for a place. For places that do not have their own
+Wikipedia page, a formula is used that derives a static importance from the
+place's [search rank](../customize/Ranking.md#search-rank).
+
+In a second step, a secondary importance value is added which is meant to
+represent how well-known the general area is where the place is located. It
+functions as a tie-breaker between places with very similar primary
+importance values.
+
+nominatim.org has preprocessed importance tables for the
+[primary Wikipedia rankings](https://nominatim.org/data/wikimedia-importance.sql.gz)
+and for [secondary importance](https://nominatim.org/data/wikimedia-secondary-importance.sql.gz)
+based on Wikipedia importance of the administrative areas.
+
+The source code for creating these files is available in the Github projects
+[osm-search/wikipedia-wikidata](https://github.com/osm-search/wikipedia-wikidata)
+and
+[osm-search/secondary-importance](https://github.com/osm-search/secondary-importance).
+
+### Customizing secondary importance
+
+The secondary importance is implemented as a simple
+[Postgis raster](https://postgis.net/docs/raster.html) table, where Nominatim
+looks up the value for the coordinates of the centroid of a place. You can
+provide your own secondary importance raster in form of an SQL file named
+`secondary_importance.sql.gz` in your project directory.
+
+The SQL file needs to drop and (re)create a table `secondary_importance` which
+must as a minimum contain a column `rast` of type `raster`. The raster must
+be in EPSG:4326 and contain 16bit unsigned ints
+(`raster_constraint_pixel_types(rast) = '{16BUI}'). Any other columns in the
+table will be ignored. You must furthermore create an index as follows:
+
+```
+CREATE INDEX ON secondary_importance USING gist(ST_ConvexHull(gist))
+```
+
+The following raster2pgsql command will create a table from a tiff file
+that conforms to the requirements:
+
+```
+raster2pgsql -I -C -Y -d -t 128x128 input.tiff public.secondary_importance
+```

docs/customize/Overview.md

@@ -0,0 +1,22 @@
+Nominatim comes with a predefined set of configuration options that should
+work for most standard installations. If you have special requirements, there
+are many places where the configuration can be adapted. This chapter describes
+the following configurable parts:
+
+* [Global Settings](Settings.md) has a detailed description of all parameters that
+  can be set in your local `.env` configuration
+* [Import styles](Import-Styles.md) explains how to write your own import style
+  in order to control what kind of OSM data will be imported
+* [API Result Formatting](Result-Formatting.md) shows how to change the
+  output of the Nominatim API
+* [Place ranking](Ranking.md) describes the configuration around classifing
+  places in terms of their importance and their role in an address
+* [Tokenizers](Tokenizers.md) describes the configuration of the module
+  responsible for analysing and indexing names
+* [Special Phrases](Special-Phrases.md) are common nouns or phrases that
+  can be used in search to identify a class of places
+
+There are also guides for adding the following external data:
+
+* [US house numbers from the TIGER dataset](Tiger.md)
+* [External postcodes](Postcodes.md)

docs/customize/Postcodes.md

@@ -0,0 +1,37 @@
+# External postcode data
+
+Nominatim creates a table of known postcode centroids during import. This table
+is used for searches of postcodes and for adding postcodes to places where the
+OSM data does not provide one. These postcode centroids are mainly computed
+from the OSM data itself. In addition, Nominatim supports reading postcode
+information from an external CSV file, to supplement the postcodes that are
+missing in OSM.
+
+To enable external postcode support, simply put one CSV file per country into
+your project directory and name it `<CC>_postcodes.csv`. `<CC>` must be the
+two-letter country code for which to apply the file. The file may also be
+gzipped. Then it must be called `<CC>_postcodes.csv.gz`.
+
+The CSV file must use commas as a delimiter and have a header line. Nominatim
+expects three columns to be present: `postcode`, `lat` and `lon`. All other
+columns are ignored. `lon` and `lat` must describe the x and y coordinates of the
+postcode centroids in WGS84.
+
+The postcode files are loaded only when there is data for the given country
+in your database. For example, if there is a `us_postcodes.csv` file in your
+project directory but you import only an excerpt of Italy, then the US postcodes
+will simply be ignored.
+
+As a rule, the external postcode data should be put into the project directory
+**before** starting the initial import. Still, you can add, remove and update the
+external postcode data at any time. Simply
+run:
+
+```
+nominatim refresh --postcodes
+```
+
+to make the changes visible in your database. Be aware, however, that the changes
+only have an immediate effect on searches for postcodes. Postcodes that were
+added to places are only updated, when they are reindexed. That usually happens
+only during replication updates.

docs/customize/Ranking.md

@@ -0,0 +1,139 @@
+# Place Ranking in Nominatim
+
+Nominatim uses two metrics to rank a place: search rank and address rank.
+This chapter explains what place ranking means and how it can be customized.
+
+## Search rank
+
+The search rank describes the extent and importance of a place. It is used
+when ranking search results. Simply put, if there are two results for a
+search query which are otherwise equal, then the result with the _lower_
+search rank will be appear higher in the result list.
+
+Search ranks are not so important these days because many well-known
+places use the Wikipedia importance ranking instead.
+
+The following table gives an overview of the kind of features that Nominatim
+expects for each rank:
+
+rank   | typical place types             | extent
+-------|---------------------------------|-------
+1-3    | oceans, continents              | -
+4      | countries                       | -
+5-9    | states, regions, provinces      | -
+10-12  | counties                        | -
+13-16  | cities, municipalities, islands | 15 km
+17-18  | towns, boroughs                 | 4 km
+19     | villages, suburbs               | 2 km
+20     | hamlets, farms, neighbourhoods  |  1 km
+21-25  | isolated dwellings, city blocks | 500 m
+
+The extent column describes how far a feature is assumed to reach when it
+is mapped only as a point. Larger features like countries and states are usually
+available with their exact area in the OpenStreetMap data. That is why no extent
+is given.
+
+## Address rank
+
+The address rank describes where a place shows up in an address hierarchy.
+Usually only administrative boundaries and place nodes and areas are
+eligible to be part of an address. Places that should not appear in the
+address must have an address rank of 0.
+
+The following table gives an overview how ranks are mapped to address parts:
+
+ rank        | address part
+-------------|-------------
+ 1-3         | _unused_
+ 4           | country
+ 5-9         | state
+ 10-12       | county
+ 13-16       | city
+ 17-21       | suburb
+ 22-24       | neighbourhood
+ 25          | squares, farms, localities
+ 26-27       | street
+ 28-30       | POI/house number
+
+The country rank 4 usually doesn't show up in the address parts of an object.
+The country is determined indirectly from the country code.
+
+Ranks 5-24 can be assigned more or less freely. They make up the major part
+of the address.
+
+Rank 25 is also an addressing rank but it is special because while it can be
+the parent to a POI with an addr:place of the same name, it cannot be a parent
+to streets. Use it for place features that are technically on the same level
+as a street (e.g. squares, city blocks) or for places that should not normally
+appear in an address unless explicitly tagged so (e.g place=locality which
+should be uninhabited and as such not addressable).
+
+The street ranks 26 and 27 are handled slightly differently. Only one object
+from these ranks shows up in an address.
+
+For POI level objects like shops, buildings or house numbers always use rank 30.
+Ranks 28 is reserved for house number interpolations. 29 is for internal use
+only.
+
+## Rank configuration
+
+Search and address ranks are assigned to a place when it is first imported
+into the database. There are a few hard-coded rules for the assignment:
+
+ * postcodes follow special rules according to their length
+ * boundaries that are not areas and railway=rail are dropped completely
+ * the following are always search rank 30 and address rank 0:
+    * highway nodes
+    * landuse that is not an area
+
+Other than that, the ranks can be freely assigned via the JSON file according
+to their type and the country they are in. The name of the config file to be
+used can be changed with the setting `NOMINATIM_ADDRESS_LEVEL_CONFIG`.
+
+The address level configuration must consist of an array of configuration
+entries, each containing a tag definition and an optional country array:
+
+```
+[ {
+    "tags" : {
+      "place" : {
+        "county" : 12,
+        "city" : 16,
+      },
+      "landuse" : {
+        "residential" : 22,
+        "" : 30
+      }
+    }
+  },
+  {
+    "countries" : [ "ca", "us" ],
+    "tags" : {
+      "boundary" : {
+        "administrative8" : 18,
+        "administrative9" : 20
+      },
+      "landuse" : {
+        "residential" : [22, 0]
+      }
+    }
+  }
+]
+```
+
+The `countries` field contains a list of countries (as ISO 3166-1 alpha 2 code)
+for which the definition applies. When the field is omitted, then the
+definition is used as a fallback, when nothing more specific for a given
+country exists.
+
+`tags` contains the ranks for key/value pairs. The ranks can be either a
+single number, in which case they are the search and address rank, or an array
+of search and address rank (in that order). The value may be left empty.
+Then the rank is used when no more specific value is found for the given
+key.
+
+Countries and key/value combination may appear in multiple definitions. Just
+make sure that each combination of country/key/value appears only once per
+file. Otherwise the import will fail with a UNIQUE INDEX constraint violation
+on import.
+

docs/customize/Result-Formatting.md

@@ -0,0 +1,259 @@
+# Changing the Appearance of Results in the Server API
+
+The Nominatim Server API offers a number of formatting options that
+present search results in [different output formats](../api/Output.md).
+These results only contain a subset of all the information that Nominatim
+has about the result. This page explains how to adapt the result output
+or add additional result formatting.
+
+## Defining custom result formatting
+
+To change the result output, you need to place a file `api/v1/format.py`
+into your project directory. This file needs to define a single variable
+`dispatch` containing a [FormatDispatcher](#formatdispatcher). This class
+serves to collect the functions for formatting the different result types
+and offers helper functions to apply the formatters.
+
+There are two ways to define the `dispatch` variable. If you want to reuse
+the default output formatting and just make some changes or add an additional
+format type, then import the dispatch object from the default API:
+
+``` python
+from nominatim_api.v1.format import dispatch as dispatch
+```
+
+If you prefer to define a completely new result output, then you can
+create an empty dispatcher object:
+
+``` python
+from nominatim_api import FormatDispatcher
+
+dispatch = FormatDispatcher()
+```
+
+## The formatting function
+
+The dispatcher organises the formatting functions by format and result type.
+The format corresponds to the `format` parameter of the API. It can contain
+one of the predefined format names or you can invent your own new format.
+
+API calls return data classes or an array of a data class which represent
+the result. You need to make sure there are formatters defined for the
+following result types:
+
+* StatusResult (single object, returned by `/status`)
+* DetailedResult (single object, returned by `/details`)
+* SearchResults (list of objects, returned by `/search`)
+* ReverseResults (list of objects, returned by `/reverse` and `/lookup`)
+* RawDataList (simple object, returned by `/deletable` and `/polygons`)
+
+A formatter function has the following signature:
+
+``` python
+def format_func(result: ResultType, options: Mapping[str, Any]) -> str
+```
+
+The options dictionary contains additional information about the original
+query. See the [reference below](#options-for-different-result-types)
+about the possible options.
+
+To set the result formatter for a certain result type and format, you need
+to write the format function and decorate it with the
+[`format_func`](#nominatim_api.FormatDispatcher.format_func)
+decorator.
+
+For example, let us extend the result for the status call in text format
+and add the server URL. Such a formatter would look like this:
+
+``` python
+from nominatim_api import StatusResult
+
+@dispatch.format_func(StatusResult, 'text')
+def _format_status_text(result, _):
+    header = 'Status for server nominatim.openstreetmap.org'
+    if result.status:
+        return f"{header}\n\nERROR: {result.message}"
+
+    return f"{header}\n\nOK"
+```
+
+If your dispatcher is derived from the default one, then this definition
+will overwrite the original formatter function. This way it is possible
+to customize the output of selected results.
+
+## Adding new formats
+
+You may also define a completely different output format. This is as simple
+as adding formatting functions for all result types using the custom
+format name:
+
+``` python
+from nominatim_api import StatusResult
+
+@dispatch.format_func(StatusResult, 'chatty')
+def _format_status_text(result, _):
+    if result.status:
+        return f"The server is currently not running. {result.message}"
+
+    return "Good news! The server is running just fine."
+```
+
+That's all. Nominatim will automatically pick up the new format name and
+will allow the user to use it. There is no need to implement formatter
+functions for all the result types, when you invent a new one. The
+available formats will be determined for each API endpoint separately.
+To find out which formats are available, you can use the `--list-formats`
+option of the CLI tool:
+
+```
+me@machine:planet-project$ nominatim status --list-formats
+2024-08-16 19:54:00: Using project directory: /home/nominatim/planet-project
+text
+json
+chatty
+debug
+me@machine:planet-project$
+```
+
+The `debug` format listed in the last line will always appear. It is a
+special format that enables debug output via the command line (the same
+as the `debug=1` parameter enables for the server API). To not clash
+with this built-in function, you shouldn't name your own format 'debug'.
+
+### Content type of new formats
+
+All responses will be returned with the content type application/json by
+default. If your format produces a different content type, you need
+to configure the content type with the `set_content_type()` function.
+
+For example, the 'chatty' format above returns just simple text. So the
+content type should be set up as:
+
+``` python
+from nominatim_api.server.content_types import CONTENT_TEXT
+
+dispatch.set_content_type('chatty', CONTENT_TEXT)
+```
+
+The `content_types` module used above provides constants for the most
+frequent content types. You set the content type to an arbitrary string,
+if the content type you need is not available.
+
+## Formatting error messages
+
+Any exception thrown during processing of a request is given to
+a special error formatting function. It takes the requested content type,
+the status code and the error message. It should return the error message
+in a form appropriate for the given content type.
+
+You can overwrite the default formatting function with the decorator
+`error_format_func`:
+
+``` python
+import nominatim_api.server.content_types as ct
+
+@dispatch.error_format_func
+def _format_error(content_type: str, msg: str, status: int) -> str:
+    if content_type == ct.CONTENT_XML:
+        return f"""<?xml version="1.0" encoding="UTF-8" ?>
+                     <message>{msg}</message>
+                """
+    if content_type == ct.CONTENT_JSON:
+        return f'"{msg}"'
+
+    return f"ERROR: {msg}"
+```
+
+
+## Debugging custom formatters
+
+The easiest way to try out your custom formatter is by using the Nominatim
+CLI commands. Custom formats can be chosen with the `--format` parameter:
+
+```
+me@machine:planet-project$ nominatim status --format chatty
+2024-08-16 19:54:00: Using project directory: /home/nominatim/planet-project
+Good news! The server is running just fine.
+me@machine:planet-project$
+```
+
+They will also emit full error messages when there is a problem with the
+code you need to debug.
+
+!!! danger
+    In some cases, when you make an error with your import statement, the
+    CLI will not give you an error but instead tell you, that the API
+    commands are no longer available:
+
+        me@machine: nominatim status
+        usage: nominatim [-h] [--version] {import,freeze,replication,special-phrases,add-data,index,refresh,admin} ...
+        nominatim: error: argument subcommand: invalid choice: 'status'
+
+    This happens because the CLI tool is meant to still work when the
+    nominatim-api package is not installed. Import errors involving
+    `nominatim_api` are interpreted as "package not installed".
+
+    Use the help command to find out which is the offending import that
+    could not be found:
+
+        me@machine: nominatim -h
+        ... [other help text] ...
+        Nominatim API package not found (was looking for module: nominatim_api.xxx).
+
+## Reference
+
+### FormatDispatcher
+
+::: nominatim_api.FormatDispatcher
+    options:
+        heading_level: 6
+        group_by_category: False
+
+### JsonWriter
+
+::: nominatim_api.utils.json_writer.JsonWriter
+    options:
+        heading_level: 6
+        group_by_category: False
+
+### Options for different result types
+
+This section lists the options that may be handed in with the different result
+types in the v1 version of the Nominatim API.
+
+#### StatusResult
+
+_None._
+
+#### DetailedResult
+
+| Option          | Description |
+|-----------------|-------------|
+| locales         | [Locales](../library/Result-Handling.md#locale) object for the requested language(s) |
+| group_hierarchy | Setting of [group_hierarchy](../api/Details.md#output-details) parameter |
+| icon_base_url   | (optional) URL pointing to icons as set in [NOMINATIM_MAPICON_URL](Settings.md#nominatim_mapicon_url) |
+
+#### SearchResults
+
+| Option          | Description |
+|-----------------|-------------|
+| query           | Original query string |
+| more_url        | URL for requesting additional results for the same query |
+| exclude_place_ids | List of place IDs already returned |
+| viewbox         | Setting of [viewbox](../api/Search.md#result-restriction) parameter |
+| extratags       | Setting of [extratags](../api/Search.md#output-details) parameter |
+| namedetails     | Setting of [namedetails](../api/Search.md#output-details) parameter |
+| addressdetails  | Setting of [addressdetails](../api/Search.md#output-details) parameter |
+
+#### ReverseResults
+
+| Option          | Description |
+|-----------------|-------------|
+| query           | Original query string |
+| extratags       | Setting of [extratags](../api/Search.md#output-details) parameter |
+| namedetails     | Setting of [namedetails](../api/Search.md#output-details) parameter |
+| addressdetails  | Setting of [addressdetails](../api/Search.md#output-details) parameter |
+
+#### RawDataList
+
+_None._

docs/customize/SQLite.md

@@ -0,0 +1,60 @@
+A Nominatim database can be converted into an SQLite database and used as
+a read-only source for geocoding queries. This sections describes how to
+create and use an SQLite database.
+
+!!! danger
+    This feature is in an experimental state at the moment. Use at your own
+    risk.
+
+## Installing prerequisites
+
+To use a SQLite database, you need to install:
+
+* SQLite (>= 3.30)
+* Spatialite (> 5.0.0)
+* aiosqlite
+
+On Ubuntu/Debian, you can run:
+
+    sudo apt install sqlite3 libsqlite3-mod-spatialite libspatialite7
+
+Install the aiosqlite Python package in your virtual environment:
+
+    /srv/nominatim-venv/bin/pip install aiosqlite
+
+## Creating a new SQLite database
+
+Nominatim cannot import directly into SQLite database. Instead you have to
+first create a geocoding database in PostgreSQL by running a
+[regular Nominatim import](../admin/Import.md).
+
+Once this is done, the database can be converted to SQLite with
+
+    nominatim convert -o mydb.sqlite
+
+This will create a database where all geocoding functions are available.
+Depending on what functions you need, the database can be made smaller:
+
+* `--without-reverse` omits indexes only needed for reverse geocoding
+* `--without-search` omit tables and indexes used for forward search
+* `--without-details` leaves out extra information only available in the
+  details API
+
+## Using an SQLite database
+
+Once you have created the database, you can use it by simply pointing the
+database DSN to the SQLite file:
+
+    NOMINATIM_DATABASE_DSN=sqlite:dbname=mydb.sqlite
+
+Please note that SQLite support is only available for the Python frontend. To
+use the test server with an SQLite database, you therefore need to switch
+the frontend engine:
+
+    nominatim serve --engine falcon
+
+You need to install falcon or starlette for this, depending on which engine
+you choose.
+
+The CLI query commands and the library interface already use the new Python
+frontend and therefore work right out of the box.

docs/customize/Settings.md

@@ -0,0 +1,714 @@
+This section provides a reference of all configuration parameters that can
+be used with Nominatim.
+
+# Configuring Nominatim
+
+Nominatim uses [dotenv](https://github.com/theskumar/python-dotenv) to manage
+its configuration settings. There are two means to set configuration
+variables: through an `.env` configuration file or through an environment
+variable.
+
+The `.env` configuration file needs to be placed into the
+[project directory](../admin/Import.md#creating-the-project-directory). It
+must contain configuration parameters in `<parameter>=<value>` format.
+Please refer to the dotenv documentation for details.
+
+The configuration options may also be set in the form of shell environment
+variables. This is particularly useful, when you want to temporarily change
+a configuration option. For example, to force the replication serve to
+download the next change, you can temporarily disable the update interval:
+
+    NOMINATIM_REPLICATION_UPDATE_INTERVAL=0 nominatim replication --once
+
+If a configuration option is defined through .env file and environment
+variable, then the latter takes precedence. 
+
+## Configuration Parameter Reference
+
+### Import and Database Settings
+
+#### NOMINATIM_DATABASE_DSN
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Database connection string |
+| **Format:**        | string: `pgsql:<param1>=<value1>;<param2>=<value2>;...` |
+| **Default:**       | pgsql:dbname=nominatim |
+| **After Changes:** | run `nominatim refresh --website` |
+
+Sets the connection parameters for the Nominatim database. At a minimum
+the name of the database (`dbname`) is required. You can set any additional
+parameter that is understood by libpq. See the [Postgres documentation](https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-PARAMKEYWORDS) for a full list.
+
+!!! note
+    It is usually recommended not to set the password directly in this
+    configuration parameter. Use a
+    [password file](https://www.postgresql.org/docs/current/libpq-pgpass.html)
+    instead.
+
+
+#### NOMINATIM_DATABASE_WEBUSER
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Database query user |
+| **Format:**        | string  |
+| **Default:**       | www-data |
+| **After Changes:** | cannot be changed after import |
+
+Defines the name of the database user that will run search queries. Usually
+this is the user under which the webserver is executed. The Postgres user
+needs to be set up before starting the import.
+
+Nominatim grants minimal rights to this user to all tables that are needed
+for running geocoding queries.
+
+
+#### NOMINATIM_TOKENIZER
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Tokenizer used for normalizing and parsing queries and names |
+| **Format:**        | string |
+| **Default:**       | icu |
+| **After Changes:** | cannot be changed after import |
+
+Sets the tokenizer type to use for the import. For more information on
+available tokenizers and how they are configured, see
+[Tokenizers](../customize/Tokenizers.md).
+
+
+#### NOMINATIM_TOKENIZER_CONFIG
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Configuration file for the tokenizer |
+| **Format:**        | path |
+| **Default:**       | _empty_ (default file depends on tokenizer) |
+| **After Changes:** | see documentation for each tokenizer |
+
+Points to the file with additional configuration for the tokenizer.
+See the [Tokenizer](../customize/Tokenizers.md) descriptions for details
+on the file format.
+
+If a relative path is given, then the file is searched first relative to the
+project directory and then in the global settings directory.
+
+
+#### NOMINATIM_LIMIT_REINDEXING
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Avoid invalidating large areas |
+| **Format:**        | bool |
+| **Default:**       | yes |
+
+Nominatim computes the address of each place at indexing time. This has the
+advantage to make search faster but also means that more objects needs to
+be invalidated when the data changes. For example, changing the name of
+the state of Florida would require recomputing every single address point
+in the state to make the new name searchable in conjunction with addresses.
+
+Setting this option to 'yes' means that Nominatim skips reindexing of contained
+objects when the area becomes too large.
+
+
+#### NOMINATIM_LANGUAGES
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Restrict search languages |
+| **Format:**        | string: comma-separated list of language codes |
+| **Default:**       | _empty_ |
+
+Normally Nominatim will include all language variants of name:XX
+in the search index. Set this to a comma separated list of language
+codes, to restrict import to a subset of languages.
+
+Currently only affects the initial import of country names and special phrases.
+
+
+#### NOMINATIM_USE_US_TIGER_DATA
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Enable searching for Tiger house number data |
+| **Format:**        | boolean |
+| **Default:**       | no |
+| **After Changes:** | run `nominatim refresh --functions` |
+
+When this setting is enabled, search and reverse queries also take data
+from [Tiger house number data](Tiger.md) into account.
+
+
+#### NOMINATIM_USE_AUX_LOCATION_DATA
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Enable searching in external house number tables |
+| **Format:**        | boolean |
+| **Default:**       | no |
+| **After Changes:** | run `nominatim refresh --functions` |
+| **Comment:**       | Do not use. |
+
+When this setting is enabled, search queries also take data from external
+house number tables into account.
+
+*Warning:* This feature is currently unmaintained and should not be used.
+
+
+#### NOMINATIM_HTTP_PROXY
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Use HTTP proxy when downloading data |
+| **Format:**        | boolean |
+| **Default:**       | no |
+
+When this setting is enabled and at least
+[NOMINATIM_HTTP_PROXY_HOST](#nominatim_http_proxy_host) and
+[NOMINATIM_HTTP_PROXY_PORT](#nominatim_http_proxy_port) are set, the
+configured proxy will be used, when downloading external data like
+replication diffs.
+
+
+#### NOMINATIM_HTTP_PROXY_HOST
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Host name of the proxy to use |
+| **Format:**        | string |
+| **Default:**       | _empty_ |
+
+When [NOMINATIM_HTTP_PROXY](#nominatim_http_proxy) is enabled, this setting
+configures the proxy host name.
+
+
+#### NOMINATIM_HTTP_PROXY_PORT
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Port number of the proxy to use |
+| **Format:**        | integer |
+| **Default:**       | 3128 |
+
+When [NOMINATIM_HTTP_PROXY](#nominatim_http_proxy) is enabled, this setting
+configures the port number to use with the proxy.
+
+
+#### NOMINATIM_HTTP_PROXY_LOGIN
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Username for proxies that require login |
+| **Format:**        | string |
+| **Default:**       | _empty_ |
+
+When [NOMINATIM_HTTP_PROXY](#nominatim_http_proxy) is enabled, use this
+setting to define the username for proxies that require a login.
+
+
+#### NOMINATIM_HTTP_PROXY_PASSWORD
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Password for proxies that require login |
+| **Format:**        | string |
+| **Default:**       | _empty_ |
+
+When [NOMINATIM_HTTP_PROXY](#nominatim_http_proxy) is enabled, use this
+setting to define the password for proxies that require a login.
+
+
+#### NOMINATIM_OSM2PGSQL_BINARY
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Location of the osm2pgsql binary |
+| **Format:**        | path |
+| **Default:**       | _empty_ (use binary shipped with Nominatim) |
+| **Comment:**       | EXPERT ONLY |
+
+Nominatim uses [osm2pgsql](https://osm2pgsql.org) to load the OSM data
+initially into the database. Nominatim comes bundled with a version of
+osm2pgsql that is guaranteed to be compatible. Use this setting to use
+a different binary instead. You should do this only when you know exactly
+what you are doing. If the osm2pgsql version is not compatible, then the
+result is undefined.
+
+
+#### NOMINATIM_WIKIPEDIA_DATA_PATH
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Directory with the wikipedia importance data |
+| **Format:**        | path |
+| **Default:**       | _empty_ (project directory) |
+
+Set a custom location for the
+[wikipedia ranking file](../admin/Import.md#wikipediawikidata-rankings). When
+unset, Nominatim expects the data to be saved in the project directory.
+
+#### NOMINATIM_ADDRESS_LEVEL_CONFIG
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Configuration file for rank assignments |
+| **Format:**        | path |
+| **Default:**       | address-levels.json |
+
+The _address level configuration_ defines the rank assignments for places. See
+[Place Ranking](Ranking.md) for a detailed explanation what rank assignments
+are and what the configuration file must look like.
+
+When a relative path is given, then the file is searched first relative to the
+project directory and then in the global settings directory.
+
+
+#### NOMINATIM_IMPORT_STYLE
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Configuration to use for the initial OSM data import |
+| **Format:**        | string or path |
+| **Default:**       | extratags |
+
+The _style configuration_ describes which OSM objects and tags are taken
+into consideration for the search database. Nominatim comes with a set
+of pre-configured styles, that may be configured here.
+
+You can also write your own custom style and point the setting to the file
+with the style. When a relative path is given, then the style file is searched
+first relative to the project directory and then in the global settings
+directory.
+
+See [Import Styles](Import-Styles.md)
+for more information on the available internal styles and the format of the
+configuration file.
+
+#### NOMINATIM_FLATNODE_FILE
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Location of osm2pgsql flatnode file |
+| **Format:**        | path |
+| **Default:**       | _empty_ (do not use a flatnote file) |
+| **After Changes:** | Only change when moving the file physically. |
+
+The `osm2pgsql flatnode file` is file that efficiently stores geographic
+location for OSM nodes. For larger imports it can significantly speed up
+the import. When this option is unset, then osm2pgsql uses a PsotgreSQL table
+to store the locations.
+
+When a relative path is given, then the flatnode file is created/searched
+relative to the project directory.
+
+!!! warning
+
+    The flatnode file is not only used during the initial import but also
+    when adding new data with `nominatim add-data` or `nominatim replication`.
+    Make sure you keep the flatnode file around and this setting unmodified,
+    if you plan to add more data or run regular updates.
+
+
+#### NOMINATIM_TABLESPACE_*
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Group of settings for distributing the database over tablespaces |
+| **Format:**        | string |
+| **Default:**       | _empty_ (do not use a table space) |
+| **After Changes:** | no effect after initial import |
+
+Nominatim allows to distribute the search database over up to 10 different
+[PostgreSQL tablespaces](https://www.postgresql.org/docs/current/manage-ag-tablespaces.html).
+If you use this option, make sure that the tablespaces exist before starting
+the import.
+
+The available tablespace groups are:
+
+NOMINATIM_TABLESPACE_SEARCH_DATA
+:    Data used by the geocoding frontend.
+
+NOMINATIM_TABLESPACE_SEARCH_INDEX
+:    Indexes used by the geocoding frontend.
+
+NOMINATIM_TABLESPACE_OSM_DATA
+:    Raw OSM data cache used for import and updates.
+
+NOMINATIM_TABLESPACE_OSM_INDEX
+:    Indexes on the raw OSM data cache.
+
+NOMINATIM_TABLESPACE_PLACE_DATA
+:    Data table with the pre-filtered but still unprocessed OSM data.
+     Used only during imports and updates.
+
+NOMINATIM_TABLESPACE_PLACE_INDEX
+:    Indexes on raw data table. Used only during imports and updates.
+
+NOMINATIM_TABLESPACE_ADDRESS_DATA
+:    Data tables used for computing search terms and addresses of places
+     during import and updates.
+
+NOMINATIM_TABLESPACE_ADDRESS_INDEX
+:    Indexes on the data tables for search term and address computation.
+     Used only for import and updates.
+
+NOMINATIM_TABLESPACE_AUX_DATA
+:    Auxiliary data tables for non-OSM data, e.g. for Tiger house number data.
+
+NOMINATIM_TABLESPACE_AUX_INDEX
+:    Indexes on auxiliary data tables.
+
+
+### Replication Update Settings
+
+#### NOMINATIM_REPLICATION_URL
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Base URL of the replication service |
+| **Format:**        | url |
+| **Default:**       | https://planet.openstreetmap.org/replication/minute |
+| **After Changes:** | run `nominatim replication --init` |
+
+Replication services deliver updates to OSM data. Use this setting to choose
+which replication service to use. See [Updates](../admin/Update.md) for more
+information on how to set up regular updates.
+
+#### NOMINATIM_REPLICATION_MAX_DIFF
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Maximum amount of data to download per update cycle (in MB) |
+| **Format:**        | integer |
+| **Default:**       | 50 |
+| **After Changes:** | restart the replication process |
+
+At each update cycle Nominatim downloads diffs until either no more diffs
+are available on the server (i.e. the database is up-to-date) or the limit
+given in this setting is exceeded. Nominatim guarantees to downloads at least
+one diff, if one is available, no matter how small the setting.
+
+The default for this setting is fairly conservative because Nominatim keeps
+all data downloaded in one cycle in RAM. Using large values in a production
+server may interfere badly with the search frontend because it evicts data
+from RAM that is needed for speedy answers to incoming requests. It is usually
+a better idea to keep this setting lower and run multiple update cycles
+to catch up with updates.
+
+When catching up in non-production mode, for example after the initial import,
+the setting can easily be changed temporarily on the command line:
+
+    NOMINATIM_REPLICATION_MAX_DIFF=3000 nominatim replication
+
+
+#### NOMINATIM_REPLICATION_UPDATE_INTERVAL
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Publication interval of the replication service (in seconds) |
+| **Format:**        | integer |
+| **Default:**       | 75 |
+| **After Changes:** | restart the replication process |
+
+This setting determines when Nominatim will attempt to download again a new
+update. The time is computed from the publication date of the last diff
+downloaded. Setting this to a slightly higher value than the actual
+publication interval avoids unnecessary rechecks.
+
+
+#### NOMINATIM_REPLICATION_RECHECK_INTERVAL
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Wait time to recheck for a pending update (in seconds)  |
+| **Format:**        | integer |
+| **Default:**       | 60 |
+| **After Changes:** | restart the replication process |
+
+When replication updates are run in continuous mode (using `nominatim replication`),
+this setting determines how long Nominatim waits until it looks for updates
+again when updates were not available on the server.
+
+Note that this is different from
+[NOMINATIM_REPLICATION_UPDATE_INTERVAL](#nominatim_replication_update_interval).
+Nominatim will never attempt to query for new updates for UPDATE_INTERVAL
+seconds after the current database date. Only after the update interval has
+passed it asks for new data. If then no new data is found, it waits for
+RECHECK_INTERVAL seconds before it attempts again.
+
+### API Settings
+
+#### NOMINATIM_CORS_NOACCESSCONTROL
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Send permissive CORS access headers |
+| **Format:**        | boolean |
+| **Default:**       | yes |
+| **After Changes:** | run `nominatim refresh --website` |
+
+When this setting is enabled, API HTTP responses include the HTTP
+[CORS](https://en.wikipedia.org/wiki/CORS) headers
+`access-control-allow-origin: *` and `access-control-allow-methods: OPTIONS,GET`.
+
+#### NOMINATIM_MAPICON_URL
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | URL prefix for static icon images |
+| **Format:**        | url |
+| **Default:**       | _empty_ |
+| **After Changes:** | run `nominatim refresh --website` |
+
+When a mapicon URL is configured, then Nominatim includes an additional `icon`
+field in the responses, pointing to an appropriate icon for the place type.
+
+Map icons used to be included in Nominatim itself but now have moved to the
+[nominatim-ui](https://github.com/osm-search/nominatim-ui/) project. If you
+want the URL to be included in API responses, make the `/mapicon`
+directory of the project available under a public URL and point this setting
+to the directory.
+
+
+#### NOMINATIM_DEFAULT_LANGUAGE
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Language of responses when no language is requested |
+| **Format:**        | language code |
+| **Default:**       | _empty_ (use the local language of the feature) |
+| **After Changes:** | run `nominatim refresh --website` |
+
+Nominatim localizes the place names in responses when the corresponding
+translation is available. Users can request a custom language setting through
+the HTTP accept-languages header or through the explicit parameter
+[accept-languages](../api/Search.md#language-of-results). If neither is
+given, it falls back to this setting. If the setting is also empty, then
+the local languages (in OSM: the name tag without any language suffix) is
+used.
+
+
+#### NOMINATIM_LOOKUP_MAX_COUNT
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Maximum number of OSM ids accepted by /lookup |
+| **Format:**        | integer |
+| **Default:**       | 50 |
+| **After Changes:** | run `nominatim refresh --website` |
+
+The /lookup point accepts list of ids to look up address details for. This
+setting restricts the number of places a user may look up with a single
+request.
+
+
+#### NOMINATIM_POLYGON_OUTPUT_MAX_TYPES
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Number of different geometry formats that may be returned |
+| **Format:**        | integer |
+| **Default:**       | 1 |
+| **After Changes:** | run `nominatim refresh --website` |
+
+Nominatim supports returning full geometries of places. The geometries may
+be requested in different formats with one of the
+[`polygon_*` parameters](../api/Search.md#polygon-output). Use this
+setting to restrict the number of geometry types that may be requested
+with a single query.
+
+Setting this parameter to 0 disables polygon output completely.
+
+
+#### NOMINATIM_SEARCH_WITHIN_COUNTRIES
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Disable search for elements that are not in the country grid |
+| **Format:**        | boolean |
+| **Default:**       | no |
+| **After Changes:** | run `nominatim refresh --website` |
+
+Enable to search elements just within countries.
+
+When enabled, if, despite not finding a point within the static grid of countries, it
+finds a geometry of a region, do not return the geometry.
+Return "Unable to geocode" instead.
+
+
+#### NOMINATIM_SERVE_LEGACY_URLS
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Enable serving via URLs with a .php suffix |
+| **Format:**        | boolean |
+| **Default:**       | yes |
+| **Comment:**       | Python frontend only |
+
+When enabled, then endpoints are reachable as `/<name>` as well as `/<name>.php`.
+This can be useful when you want to be backwards-compatible with previous
+versions of Nominatim.
+
+
+#### NOMINATIM_API_POOL_SIZE
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Number of parallel database connections per worker |
+| **Format:**        | number |
+| **Default:**       | 10 |
+| **Comment:**       | Python frontend only |
+
+Sets the maximum number of database connections available for a single instance
+of Nominatim. When configuring the maximum number of connections that your
+PostgreSQL database can handle, you need at least
+`NOMINATIM_API_POOL_SIZE` * `<number of configured workers>` connections.
+For configuring the number of workers, refer to the section about
+[Deploying the Python frontend](../admin/Deployment-Python.md).
+
+#### NOMINATIM_QUERY_TIMEOUT
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Timeout for SQL queries to the database |
+| **Format:**        | number (seconds) |
+| **Default:**       | 10 |
+| **Comment:**       | Python frontend only |
+
+When this timeout is set, then all SQL queries that run longer than the
+specified numbers of seconds will be cancelled and the user receives a
+timeout exceptions. Users of the API see a 503 HTTP error.
+
+The timeout does ont apply when using the
+[low-level DB access](../library/Low-Level-DB-Access.md)
+of the library. A timeout can be manually set, if required.
+
+
+#### NOMINATIM_REQUEST_TIMEOUT
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Timeout for search queries |
+| **Format:**        | number (seconds) |
+| **Default:**       | 60 |
+| **Comment:**       | Python frontend only |
+
+When this timeout is set, a search query will finish sending queries
+to the database after the timeout has passed and immediately return the
+results gathered so far.
+
+Note that under high load you may observe that users receive different results
+than usual without seeing an error. This may cause some confusion.
+
+#### NOMINATIM_OUTPUT_NAMES
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Specifies order of name tags |
+| **Format:**        | string: comma-separated list of tag names |
+| **Default:**       | name:XX,name,brand,official_name:XX,short_name:XX,official_name,short_name,ref |
+
+Specifies the order in which different name tags are used.
+The values in this list determine the preferred order of name variants,
+including language-specific names (in OSM: the name tag with and without any language suffix).
+
+Comma-separated list, where :XX stands for language suffix
+(e.g. name:en) and no :XX stands for general tags (e.g. name).
+
+See also [NOMINATIM_DEFAULT_LANGUAGE](#nominatim_default_language).
+
+!!! note
+    If NOMINATIM_OUTPUT_NAMES = `name:XX,name,short_name:XX,short_name` the search follows
+
+        ```
+        'name', 'short_name'
+        ```
+
+    if we have no preferred language order for showing search results.
+
+    For languages ['en', 'es'] the search follows
+
+        ```
+        'name:en', 'name:es',
+        'name',
+        'short_name:en', 'short_name:es',
+        'short_name'
+        ```
+
+    For those familiar with the internal implementation, the `_place_*` expansion is added, but to simplify, it is not included in this example.
+
+### Logging Settings
+
+#### NOMINATIM_LOG_FILE
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Log requests into a file |
+| **Format:**        | path |
+| **Default:**       | _empty_ (logging disabled) |
+
+Enable logging of requests into a file with this setting by setting the log
+file where to log to. A relative file name is assumed to be relative to
+the project directory. The format of the log output can be set
+with NOMINATIM_LOG_FORMAT.
+
+#### NOMINATIM_LOG_FORMAT
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Log requests into a file |
+| **Format:**        | [Python String Format](https://docs.python.org/3/library/string.html#formatstrings) string |
+| **Default:**       | `[{start}] {total_time:.4f} {results_total} {endpoint} "{query_string}"` |
+
+Describes the content of a log line for a single request. The format
+must be readable by Python's format function. Nominatim provides a number
+of metrics than can be logged. The default set of metrics is the following:
+
+/// html | div.simple-table
+| name            | type   | Description |
+| --------------- | ------ | ------------|
+| start           | time   | Point in time when the request arrived. |
+| end             | time   | Point in time when the request was done. |
+| query_start     | time   | Point in time when processing started. |
+| total_time      | float  | Total time in seconds to handle the request. |
+| wait_time       | float  | Time in seconds the request waited for a database connection to be available. |
+| query_time      | float  | Total time in seconds to process the request once a connection was available. |
+| results_total   | int    | Number of results found. |
+| endpoint        | string | API endpoint used. |
+| query_string    | string | Raw query string received. |
+///
+
+Variables of type 'time' contain a UTC timestamp string in ISO format.
+
+Nominatim also exposes additional metrics to help with development. These
+are subject to change between versions:
+
+/// html | div.simple-table
+| name                      | type   | Description |
+| ------------------------- | ------ | ------------|
+| search_rounds             | int    | Total number of searches executed for the request. |
+| search_min_penalty        | float  | Minimal possible penalty for the request. |
+| search_first_result_round | int    | Number of first search to yield any result. |
+| search_min_result_penalty | float  | Minimal penalty by a result found. |
+| search_best_penalty_round | int    | Search round that yielded the best penalty result. |
+///
+
+
+#### NOMINATIM_DEBUG_SQL
+
+| Summary            |                                                     |
+| --------------     | --------------------------------------------------- |
+| **Description:**   | Enable printing of raw SQL by SQLAlchemy |
+| **Format:**        | boolean |
+| **Default:**       | no |
+| **Comment:**       | **For developers only.** |
+
+This settings enables
+[SQL debugging](https://docs.sqlalchemy.org/en/20/core/engines.html#dbengine-logging)
+by SQLAlchemy. This can be helpful when debugging some bugs with internal
+query handling. It should only be used together with the CLI query functions.
+Enabling it for server mode may have unintended consequences. Use the `debug`
+parameter instead, which prints information on how the search is executed
+including SQL statements.

docs/customize/Special-Phrases.md

@@ -0,0 +1,49 @@
+# Special phrases
+
+## Importing OSM user-maintained special phrases
+
+As described in the [Import section](../admin/Import.md), it is possible to
+import special phrases from the wiki with the following command:
+
+```sh
+nominatim special-phrases --import-from-wiki
+```
+
+## Importing custom special phrases
+
+Special phrases may also be imported from any custom CSV file. The file needs
+to have a header line, use comma as delimiter and define the following
+columns:
+
+ * **phrase**: the keyword to look for
+ * **class**: key of the main tag of the place to find
+   (see [Import styles](Import-Styles.md#how-processing-works)
+ * **type**: value of the main tag
+ * **operator**: type of special phrase, may be one of:
+     * *in*: place is within the place defined by the search term (e.g. "_Hotels in_ Berlin")
+     * *near*: place is near the place defined by the search term (e.g. "_bus stops near_ Big Ben")
+     * *named*: special phrase is a classifier (e.g. "_hotel_ California")
+     * *-*: unspecified, can be any of the above
+
+If the file contains any other columns, then they are silently ignored
+
+To import the CSV file, use the following command:
+
+```sh
+nominatim special-phrases --import-from-csv <csv file>
+```
+
+Note that the two previous import commands will update the phrases from your database.
+This means that if you import some phrases from a CSV file, only the phrases
+present in the CSV file will be kept in the database. All other phrases will
+be removed.
+
+If you want to only add new phrases and not update the other ones you can add
+the argument `--no-replace` to the import command. For example:
+
+```sh
+nominatim special-phrases --import-from-csv <csv file> --no-replace
+```
+
+This will add the phrases present in the CSV file into the database without
+removing the other ones.

docs/customize/Tiger.md

@@ -0,0 +1,28 @@
+# Installing TIGER housenumber data for the US
+
+Nominatim is able to use the official [TIGER](https://www.census.gov/geographies/mapping-files/time-series/geo/tiger-line-file.html)
+address set to complement the OSM house number data in the US. You can add
+TIGER data to your own Nominatim instance by following these steps. The
+entire US adds about 10GB to your database.
+
+  1. Get preprocessed TIGER data:
+
+        cd $PROJECT_DIR
+        wget https://nominatim.org/data/tiger-nominatim-preprocessed-latest.csv.tar.gz
+
+  2. Import the data into your Nominatim database:
+
+        nominatim add-data --tiger-data tiger-nominatim-preprocessed-latest.csv.tar.gz
+
+  3. Enable use of the Tiger data in your existing `.env` file by adding:
+
+        echo NOMINATIM_USE_US_TIGER_DATA=yes >> .env
+
+  4. Apply the new settings:
+
+        nominatim refresh --functions --website
+
+
+See the [TIGER-data project](https://github.com/osm-search/TIGER-data) for more
+information on how the data got preprocessed.
+

docs/customize/Tokenizers.md

@@ -0,0 +1,408 @@
+# Tokenizers
+
+The tokenizer module in Nominatim is responsible for analysing the names given
+to OSM objects and the terms of an incoming query in order to make sure, they
+can be matched appropriately.
+
+Nominatim currently offers only one tokenizer module, the ICU tokenizer. This section
+describes the tokenizer and how it can be configured.
+
+!!! important
+    The selection of tokenizer is tied to a database installation. You need to choose
+    and configure the tokenizer before starting the initial import. Once the import
+    is done, you cannot switch to another tokenizer anymore. Reconfiguring the
+    chosen tokenizer is very limited as well. See the comments in each tokenizer
+    section.
+
+## ICU tokenizer
+
+The ICU tokenizer uses the [ICU library](http://site.icu-project.org/) to
+normalize names and queries. It also offers configurable decomposition and
+abbreviation handling.
+This tokenizer is currently the default.
+
+To enable the tokenizer add the following line to your project configuration:
+
+```
+NOMINATIM_TOKENIZER=icu
+```
+
+### How it works
+
+On import the tokenizer processes names in the following three stages:
+
+1. During the **Sanitizer step** incoming names are cleaned up and converted to
+   **full names**. This step can be used to regularize spelling, split multi-name
+   tags into their parts and tag names with additional attributes. See the
+   [Sanitizers section](#sanitizers) below for available cleaning routines.
+2. The **Normalization** part removes all information from the full names
+   that are not relevant for search.
+3. The **Token analysis** step takes the normalized full names and creates
+   all transliterated variants under which the name should be searchable.
+   See the [Token analysis](#token-analysis) section below for more
+   information.
+
+During query time, the tokeinzer is responsible for processing incoming
+queries. This happens in two stages:
+
+1. During **query preprocessing** the incoming text is split into name
+   chunks and normalised. This usually means applying the same normalisation
+   as during the import process but may involve other processing like,
+   for example, word break detection.
+2. The **token analysis** step breaks down the query parts into tokens,
+   looks them up in the database and assigns them possible functions and
+   probabilities.
+
+Query processing can be further customized while the rest of the analysis
+is hard-coded.
+
+### Configuration
+
+The ICU tokenizer is configured using a YAML file which can be configured using
+`NOMINATIM_TOKENIZER_CONFIG`. The configuration is read on import and then
+saved as part of the internal database status. Later changes to the variable
+have no effect.
+
+Here is an example configuration file:
+
+``` yaml
+query-preprocessing:
+    - step: split_japanese_phrases
+    - step: regex_replace
+      replacements:
+        - pattern: https?://[^\s]* # Filter URLs starting with http or https
+          replace: ''
+    - step: normalize
+
+normalization:
+    - ":: lower ()"
+    - "ß > 'ss'" # German szet is unambiguously equal to double ss
+transliteration:
+    - !include /etc/nominatim/icu-rules/extended-unicode-to-asccii.yaml
+    - ":: Ascii ()"
+sanitizers:
+    - step: split-name-list
+token-analysis:
+    - analyzer: generic
+      variants:
+          - !include icu-rules/variants-ca.yaml
+          - words:
+              - road -> rd
+              - bridge -> bdge,br,brdg,bri,brg
+      mutations:
+          - pattern: 'ä'
+            replacements: ['ä', 'ae']
+```
+
+The configuration file contains five sections:
+`query-preprocessing`, `normalization`, `transliteration`, `sanitizers` and `token-analysis`.
+
+#### Query preprocessing
+
+The section for `query-preprocessing` defines an ordered list of functions
+that are applied to the query before the token analysis.
+
+The following is a list of preprocessors that are shipped with Nominatim.
+
+##### normalize
+
+::: nominatim_api.query_preprocessing.normalize
+    options:
+        members: False
+        heading_level: 6
+        docstring_section_style: spacy
+
+##### regex-replace
+
+::: nominatim_api.query_preprocessing.regex_replace
+    options:
+        members: False
+        heading_level: 6
+        docstring_section_style: spacy
+    description: 
+        This option runs any given regex pattern on the input and replaces values accordingly
+    replacements:
+        - pattern: regex pattern
+          replace: string to replace with
+
+
+#### Normalization and Transliteration
+
+The normalization and transliteration sections each define a set of
+ICU rules that are applied to the names.
+
+The **normalization** rules are applied after sanitation. They should remove
+any information that is not relevant for search at all. Usual rules to be
+applied here are: lower-casing, removing of special characters, cleanup of
+spaces.
+
+The **transliteration** rules are applied at the end of the tokenization
+process to transfer the name into an ASCII representation. Transliteration can
+be useful to allow for further fuzzy matching, especially between different
+scripts.
+
+Each section must contain a list of
+[ICU transformation rules](https://unicode-org.github.io/icu/userguide/transforms/general/rules.html).
+The rules are applied in the order in which they appear in the file.
+You can also include additional rules from external yaml file using the
+`!include` tag. The included file must contain a valid YAML list of ICU rules
+and may again include other files.
+
+!!! warning
+    The ICU rule syntax contains special characters that conflict with the
+    YAML syntax. You should therefore always enclose the ICU rules in
+    double-quotes.
+
+#### Sanitizers
+
+The sanitizers section defines an ordered list of functions that are applied
+to the name and address tags before they are further processed by the tokenizer.
+They allows to clean up the tagging and bring it to a standardized form more
+suitable for building the search index.
+
+!!! hint
+    Sanitizers only have an effect on how the search index is built. They
+    do not change the information about each place that is saved in the
+    database. In particular, they have no influence on how the results are
+    displayed. The returned results always show the original information as
+    stored in the OpenStreetMap database.
+
+Each entry contains information of a sanitizer to be applied. It has a
+mandatory parameter `step` which gives the name of the sanitizer. Depending
+on the type, it may have additional parameters to configure its operation.
+
+The order of the list matters. The sanitizers are applied exactly in the order
+that is configured. Each sanitizer works on the results of the previous one.
+
+The following is a list of sanitizers that are shipped with Nominatim.
+
+##### split-name-list
+
+::: nominatim_db.tokenizer.sanitizers.split_name_list
+    options:
+        members: False
+        heading_level: 6
+        docstring_section_style: spacy
+
+##### strip-brace-terms
+
+::: nominatim_db.tokenizer.sanitizers.strip_brace_terms
+    options:
+        members: False
+        heading_level: 6
+        docstring_section_style: spacy
+
+##### tag-analyzer-by-language
+
+::: nominatim_db.tokenizer.sanitizers.tag_analyzer_by_language
+    options:
+        members: False
+        heading_level: 6
+        docstring_section_style: spacy
+
+##### clean-housenumbers
+
+::: nominatim_db.tokenizer.sanitizers.clean_housenumbers
+    options:
+        members: False
+        heading_level: 6
+        docstring_section_style: spacy
+
+##### clean-postcodes
+
+::: nominatim_db.tokenizer.sanitizers.clean_postcodes
+    options:
+        members: False
+        heading_level: 6
+        docstring_section_style: spacy
+
+##### clean-tiger-tags
+
+::: nominatim_db.tokenizer.sanitizers.clean_tiger_tags
+    options:
+        members: False
+        heading_level: 6
+        docstring_section_style: spacy
+
+#### delete-tags
+
+::: nominatim_db.tokenizer.sanitizers.delete_tags
+    options:
+        members: False
+        heading_level: 6
+        docstring_section_style: spacy
+
+#### tag-japanese
+
+::: nominatim_db.tokenizer.sanitizers.tag_japanese
+    options:
+        members: False
+        heading_level: 6
+        docstring_section_style: spacy
+
+#### Token Analysis
+
+Token analyzers take a full name and transform it into one or more normalized
+form that are then saved in the search index. In its simplest form, the
+analyzer only applies the transliteration rules. More complex analyzers
+create additional spelling variants of a name. This is useful to handle
+decomposition and abbreviation.
+
+The ICU tokenizer may use different analyzers for different names. To select
+the analyzer to be used, the name must be tagged with the `analyzer` attribute
+by a sanitizer (see for example the
+[tag-analyzer-by-language sanitizer](#tag-analyzer-by-language)).
+
+The token-analysis section contains the list of configured analyzers. Each
+analyzer must have an `id` parameter that uniquely identifies the analyzer.
+The only exception is the default analyzer that is used when no special
+analyzer was selected. There are analysers with special ids:
+
+ * '@housenumber'. If an analyzer with that name is present, it is used
+   for normalization of house numbers.
+ * '@potcode'. If an analyzer with that name is present, it is used
+   for normalization of postcodes.
+
+Different analyzer implementations may exist. To select the implementation,
+the `analyzer` parameter must be set. The different implementations are
+described in the following.
+
+##### Generic token analyzer
+
+The generic analyzer `generic` is able to create variants from a list of given
+abbreviation and decomposition replacements and introduce spelling variations.
+
+###### Variants
+
+The optional 'variants' section defines lists of replacements which create alternative
+spellings of a name. To create the variants, a name is scanned from left to
+right and the longest matching replacement is applied until the end of the
+string is reached.
+
+The variants section must contain a list of replacement groups. Each group
+defines a set of properties that describes where the replacements are
+applicable. In addition, the word section defines the list of replacements
+to be made. The basic replacement description is of the form:
+
+```
+<source>[,<source>[...]] => <target>[,<target>[...]]
+```
+
+The left side contains one or more `source` terms to be replaced. The right side
+lists one or more replacements. Each source is replaced with each replacement
+term.
+
+!!! tip
+    The source and target terms are internally normalized using the
+    normalization rules given in the configuration. This ensures that the
+    strings match as expected. In fact, it is better to use unnormalized
+    words in the configuration because then it is possible to change the
+    rules for normalization later without having to adapt the variant rules.
+
+###### Decomposition
+
+In its standard form, only full words match against the source. There
+is a special notation to match the prefix and suffix of a word:
+
+``` yaml
+- ~strasse => str  # matches "strasse" as full word and in suffix position
+- hinter~ => hntr  # matches "hinter" as full word and in prefix position
+```
+
+There is no facility to match a string in the middle of the word. The suffix
+and prefix notation automatically trigger the decomposition mode: two variants
+are created for each replacement, one with the replacement attached to the word
+and one separate. So in above example, the tokenization of "hauptstrasse" will
+create the variants "hauptstr" and "haupt str". Similarly, the name "rote strasse"
+triggers the variants "rote str" and "rotestr". By having decomposition work
+both ways, it is sufficient to create the variants at index time. The variant
+rules are not applied at query time.
+
+To avoid automatic decomposition, use the '|' notation:
+
+``` yaml
+- ~strasse |=> str
+```
+
+simply changes "hauptstrasse" to "hauptstr" and "rote strasse" to "rote str".
+
+###### Initial and final terms
+
+It is also possible to restrict replacements to the beginning and end of a
+name:
+
+``` yaml
+- ^south => s  # matches only at the beginning of the name
+- road$ => rd  # matches only at the end of the name
+```
+
+So the first example would trigger a replacement for "south 45th street" but
+not for "the south beach restaurant".
+
+###### Replacements vs. variants
+
+The replacement syntax `source => target` works as a pure replacement. It changes
+the name instead of creating a variant. To create an additional version, you'd
+have to write `source => source,target`. As this is a frequent case, there is
+a shortcut notation for it:
+
+```
+<source>[,<source>[...]] -> <target>[,<target>[...]]
+```
+
+The simple arrow causes an additional variant to be added. Note that
+decomposition has an effect here on the source as well. So a rule
+
+``` yaml
+- "~strasse -> str"
+```
+
+means that for a word like `hauptstrasse` four variants are created:
+`hauptstrasse`, `haupt strasse`, `hauptstr` and `haupt str`.
+
+###### Mutations
+
+The 'mutation' section in the configuration describes an additional set of
+replacements to be applied after the variants have been computed.
+
+Each mutation is described by two parameters: `pattern` and `replacements`.
+The pattern must contain a single regular expression to search for in the
+variant name. The regular expressions need to follow the syntax for
+[Python regular expressions](file:///usr/share/doc/python3-doc/html/library/re.html#regular-expression-syntax).
+Capturing groups are not permitted.
+`replacements` must contain a list of strings that the pattern
+should be replaced with. Each occurrence of the pattern is replaced with
+all given replacements. Be mindful of combinatorial explosion of variants.
+
+###### Modes
+
+The generic analyser supports a special mode `variant-only`. When configured
+then it consumes the input token and emits only variants (if any exist). Enable
+the mode by adding:
+
+```
+  mode: variant-only
+```
+
+to the analyser configuration.
+
+##### Housenumber token analyzer
+
+The analyzer `housenumbers` is purpose-made to analyze house numbers. It
+creates variants with optional spaces between numbers and letters. Thus,
+house numbers of the form '3 a', '3A', '3-A' etc. are all considered equivalent.
+
+The analyzer cannot be customized.
+
+##### Postcode token analyzer
+
+The analyzer `postcodes` is pupose-made to analyze postcodes. It supports
+a 'lookup' variant of the token, which produces variants with optional
+spaces. Use together with the clean-postcodes sanitizer.
+
+The analyzer cannot be customized.
+
+### Reconfiguration
+
+Changing the configuration after the import is currently not possible, although
+this feature may be added at a later time.

docs/develop/Database-Layout.md

@@ -0,0 +1,166 @@
+# Database Layout
+
+### Import tables
+
+OSM data is initially imported using [osm2pgsql](https://osm2pgsql.org).
+Nominatim uses a custom flex style to create the initial import tables.
+
+The import process creates the following tables:
+
+![osm2pgsql tables](osm2pgsql-tables.svg)
+
+The `planet_osm_*` tables are the usual backing tables for OSM data. Note
+that Nominatim uses them to look up special relations and to find nodes on
+ways.
+
+The osm2pgsql import produces a single table `place` as output with the following
+columns:
+
+ * `osm_type` - kind of OSM object (**N** - node, **W** - way, **R** - relation)
+ * `osm_id` - original OSM ID
+ * `class` - key of principal tag defining the object type
+ * `type` - value of principal tag defining the object type
+ * `name` - collection of tags that contain a name or reference
+ * `admin_level` - numerical value of the tagged administrative level
+ * `address` - collection of tags defining the address of an object
+ * `extratags` - collection of additional interesting tags that are not
+                 directly relevant for searching
+ * `geometry` - geometry of the object (in WGS84)
+
+A single OSM object may appear multiple times in this table when it is tagged
+with multiple tags that may constitute a principal tag. Take for example a
+motorway bridge. In OSM, this would be a way which is tagged with
+`highway=motorway` and `bridge=yes`. This way would appear in the `place` table
+once with `class` of `highway` and once with a `class` of `bridge`. Thus the
+*unique key* for `place` is (`osm_type`, `osm_id`, `class`).
+
+How raw OSM tags are mapped to the columns in the place table is to a certain
+degree configurable. See [Customizing Import Styles](../customize/Import-Styles.md)
+for more information.
+
+### Search tables
+
+The following tables carry all information needed to do the search:
+
+![search tables](search-tables.svg)
+
+The **placex** table is the central table that saves all information about the
+searchable places in Nominatim. The basic columns are the same as for the
+place table and have the same meaning. The placex tables adds the following
+additional columns:
+
+ * `place_id` - the internal unique ID to identify the place
+ * `partition` - the id to use with partitioned tables (see below)
+ * `geometry_sector` - a location hash used for geographically close ordering
+ * `parent_place_id` - the next higher place in the address hierarchy, only
+   relevant for POI-type places (with rank 30)
+ * `linked_place_id` - place ID of the place this object has been merged with.
+   When this ID is set, then the place is invisible for search.
+ * `importance` - measure how well known the place is
+ * `rank_search`, `rank_address` - search and address rank (see [Customizing ranking](../customize/Ranking.md)
+ * `wikipedia` - the wikipedia page used for computing the importance of the place
+ * `country_code` - the country the place is located in
+ * `housenumber` - normalized housenumber, if the place has one
+ * `postcode` - computed postcode for the place
+ * `indexed_status` - processing status of the place (0 - ready, 1 - freshly inserted, 2 - needs updating, 100 - needs deletion)
+ * `indexed_date` - timestamp when the place was processed last
+ * `centroid` - a point feature for the place
+
+The **location_property_osmline** table is a special table for
+[address interpolations](https://wiki.openstreetmap.org/wiki/Addresses#Using_interpolation).
+The columns have the same meaning and use as the columns with the same name in
+the placex table. Only three columns are special:
+
+ * `startnumber` and `endnumber` - beginning and end of the number range
+    for the interpolation
+ * `interpolationtype` - a string `odd`, `even` or `all` to indicate
+    the interval between the numbers
+
+Address interpolations are always ways in OSM, which is why there is no column
+`osm_type`.
+
+The **location_postcodes** table holds computed centroids of all postcodes that
+can be found in the OSM data. The meaning of the columns is again the same
+as that of the placex table.
+
+Every place needs an address, a set of surrounding places that describe the
+location of the place. The set of address places is made up of OSM places
+themselves. The **place_addressline** table cross-references for each place
+all the places that make up its address. Two columns define the address
+relation:
+
+  * `place_id` - reference to the place being addressed
+  * `address_place_id` - reference to the place serving as an address part
+
+The most of the columns cache information from the placex entry of the address
+part. The exceptions are:
+
+  * `fromarea` - is true if the address part has an area geometry and can
+    therefore be considered preceise
+  * `isaddress` - is true if the address part should show up in the address
+    output. Sometimes there are multiple places competing for for same address
+    type (e.g. multiple cities) and this field resolves the tie.
+
+The **search_name** table contains the search index proper. It saves for each
+place the terms with which the place can be found. The terms are split into
+the name itself and all terms that make up the address. The table mirrors some
+of the columns from placex for faster lookup.
+
+Search terms are not saved as strings. Each term is assigned an integer and those
+integers are saved in the name and address vectors of the search_name table. The
+**word** table serves as the lookup table from string to such a word ID. The
+exact content of the word table depends on the [tokenizer](Tokenizers.md) used.
+
+## Address computation tables
+
+Next to the main search tables, there is a set of secondary helper tables used
+to compute the address relations between places. These tables are partitioned.
+Each country is assigned a partition number in the country_name table (see
+below) and the data is then split between a set of tables, one for each
+partition. Note that Nominatim still manually manages partitioned tables.
+Native support for partitions in PostgreSQL only became usable with version 13.
+It will be a little while before Nominatim drops support for older versions.
+
+![address tables](address-tables.svg)
+
+The **search_name_X** tables are used to look up streets that appear in the
+`addr:street` tag.
+
+The **location_area_large_X** tables are used to look up larger areas
+(administrative boundaries and place nodes) either through their geographic
+closeness or through `addr:*` entries.
+
+The **location_road_X** tables are used to find the closest street for a
+dependent place.
+
+All three table cache specific information from the placex table for their
+selected subset of places:
+
+ * `keywords` and `name_vector` contain lists of term ids (from the word table)
+   that the full name of the place should match against
+ * `isguess` is true for places that are not described by an area
+
+All other columns reflect their counterpart in the placex table.
+
+## Static data tables
+
+Nominatim also creates a number of static tables at import:
+
+ * `nominatim_properties` saves settings that must not be changed after
+    import
+ * `address_levels` save the rank information from the
+   [ranking configuration](../customize/Ranking.md)
+ * `country_name` contains a fallback of names for all countries, their
+   default languages and saves the assignment of countries to partitions.
+ * `country_osm_grid` provides a fallback for country geometries
+
+## Auxiliary data tables
+
+Finally there are some table for auxiliary data:
+
+ * `location_property_tiger` - saves housenumber from the Tiger import. Its
+   layout is similar to that of `location_propoerty_osmline`.
+ * `place_class_*` tables are helper tables to facilitate lookup of POIs
+   by their class and type. They exist because it is not possible to create
+   combined indexes with geometries.
+

docs/develop/Development-Environment.md

@@ -0,0 +1,152 @@
+# Setting up Nominatim for Development
+
+This chapter gives an overview how to set up Nominatim for development
+and how to run tests.
+
+!!! Important
+    This guide assumes you develop under the latest version of Debian/Ubuntu.
+    You can of course also use your favourite distribution. You just might have
+    to adapt the commands below slightly, in particular the commands for
+    installing additional software.
+
+## Installing Nominatim
+
+The first step is to install Nominatim itself. Please follow the installation
+instructions in the [Admin section](../admin/Installation.md). You don't need
+to set up a webserver for development, the webserver that can be started
+via `nominatim serve` is sufficient.
+
+If you want to run Nominatim in a VM via Vagrant, use the default `ubuntu24` setup.
+Vagrant's libvirt provider runs out-of-the-box under Ubuntu. You also need to
+install an NFS daemon to enable directory sharing between host and guest. The
+following packages should get you started:
+
+    sudo apt install vagrant vagrant-libvirt libvirt-daemon nfs-kernel-server
+
+## Prerequisites for testing and documentation
+
+The Nominatim test suite consists of behavioural tests (using pytest-bdd) and
+unit tests (using pytest). It has the following additional requirements:
+
+* [flake8](https://flake8.pycqa.org/en/stable/) (CI always runs the latest version from pip)
+* [mypy](http://mypy-lang.org/) (plus typing information for external libs)
+* [Python Typing Extensions](https://github.com/python/typing_extensions) (for Python < 3.9)
+* [pytest](https://pytest.org)
+* [pytest-asyncio](https://pytest-asyncio.readthedocs.io)
+* [pytest-bdd](https://pytest-bdd.readthedocs.io)
+
+For testing the Python search frontend, you need to install extra dependencies
+depending on your choice of webserver framework:
+
+* [httpx](https://www.python-httpx.org/) (Starlette only)
+* [asgi-lifespan](https://github.com/florimondmanca/asgi-lifespan) (Starlette only)
+
+The documentation is built with mkdocs:
+
+* [mkdocs](https://www.mkdocs.org/) >= 1.1.2
+* [mkdocstrings](https://mkdocstrings.github.io/) >= 0.25
+* [mkdocs-material](https://squidfunk.github.io/mkdocs-material/)
+* [mkdocs-gen-files](https://oprypin.github.io/mkdocs-gen-files/)
+
+
+### Installing prerequisites on Ubuntu/Debian
+
+The Python tools should always be run with the most recent version.
+The easiest way, to handle these Python dependencies is to run your
+development from within a virtual environment.
+
+```sh
+sudo apt install build-essential libsqlite3-mod-spatialite osm2pgsql \
+                 postgresql-postgis postgresql-postgis-scripts \
+                 pkg-config libicu-dev virtualenv
+```
+
+To set up the virtual environment with all necessary packages run:
+
+```sh
+virtualenv ~/nominatim-dev-venv
+~/nominatim-dev-venv/bin/pip install\
+    psutil 'psycopg[binary]' PyICU SQLAlchemy \
+    python-dotenv jinja2 pyYAML \
+    mkdocs 'mkdocstrings[python]' mkdocs-gen-files mkdocs-material \
+    pytest pytest-asyncio pytest-bdd flake8 \
+    types-jinja2 types-markupsafe types-psutil types-psycopg2 \
+    types-pygments types-pyyaml types-requests types-ujson \
+    types-urllib3 typing-extensions gunicorn falcon starlette \
+    uvicorn mypy osmium aiosqlite mwparserfromhell
+```
+
+Now enter the virtual environment whenever you want to develop:
+
+```sh
+. ~/nominatim-dev-venv/bin/activate
+```
+
+### Running Nominatim during development
+
+The source code for Nominatim can be found in the `src` directory and can
+be run in-place. The source directory features a special script
+`nominatim-cli.py` which does the same as the installed 'nominatim' binary
+but executes against the code in the source tree. For example:
+
+```
+me@machine:~$ cd Nominatim
+me@machine:~Nominatim$ ./nominatim-cli.py --version
+Nominatim version 5.1.0-0
+```
+
+Make sure you have activated the virtual environment holding all
+necessary dependencies.
+
+## Executing Tests
+
+All tests are located in the `/test` directory.
+
+To run all tests, run make from the source root:
+
+```sh
+make tests
+```
+
+There are also make targets for executing only parts of the test suite.
+For example to run linting only use:
+
+```sh
+make lint
+```
+
+The possible testing targets are: mypy, lint, pytest, bdd.
+
+For more information about the structure of the tests and how to change and
+extend the test suite, see the [Testing chapter](Testing.md).
+
+## Documentation Pages
+
+The [Nominatim documentation](https://nominatim.org/release-docs/develop/) is
+built using the [MkDocs](https://www.mkdocs.org/) static site generation
+framework. The master branch is automatically deployed every night on
+[https://nominatim.org/release-docs/develop/](https://nominatim.org/release-docs/develop/)
+
+To build the documentation run
+
+```
+make doc
+```
+
+
+For local testing, you can start webserver:
+
+```
+build> make serve-doc
+[server:296] Serving on http://127.0.0.1:8000
+[handlers:62] Start watching changes
+```
+
+If you develop inside a Vagrant virtual machine, use a port that is forwarded
+to your host:
+
+```
+build> mkdocs serve --dev-addr 0.0.0.0:8088
+[server:296] Serving on http://0.0.0.0:8088
+[handlers:62] Start watching changes
+```

docs/develop/ICU-Tokenizer-Modules.md

@@ -0,0 +1,269 @@
+# Writing custom sanitizer and token analysis modules for the ICU tokenizer
+
+The [ICU tokenizer](../customize/Tokenizers.md#icu-tokenizer) provides a
+highly customizable method to pre-process and normalize the name information
+of the input data before it is added to the search index. It comes with a
+selection of sanitizers and token analyzers which you can use to adapt your
+installation to your needs. If the provided modules are not enough, you can
+also provide your own implementations. This section describes the API
+of sanitizers and token analysis.
+
+!!! warning
+    This API is currently in early alpha status. While this API is meant to
+    be a public API on which other sanitizers and token analyzers may be
+    implemented, it is not guaranteed to be stable at the moment.
+
+
+## Using non-standard modules
+
+Sanitizer names (in the `step` property), token analysis names (in the
+`analyzer`) and query preprocessor names (in the `step` property)
+may refer to externally supplied modules. There are two ways
+to include external modules: through a library or from the project directory.
+
+To include a module from a library, use the absolute import path as name and
+make sure the library can be found in your PYTHONPATH.
+
+To use a custom module without creating a library, you can put the module
+somewhere in your project directory and then use the relative path to the
+file. Include the whole name of the file including the `.py` ending.
+
+## Custom query preprocessors
+
+A query preprocessor must export a single factory function `create` with
+the following signature:
+
+``` python
+create(self, config: QueryConfig) -> Callable[[list[Phrase]], list[Phrase]]
+```
+
+The function receives the custom configuration for the preprocessor and
+returns a callable (function or class) with the actual preprocessing
+code. When a query comes in, then the callable gets a list of phrases
+and needs to return the transformed list of phrases. The list and phrases
+may be changed in place or a completely new list may be generated.
+
+The `QueryConfig` is a simple dictionary which contains all configuration
+options given in the yaml configuration of the ICU tokenizer. It is up to
+the function to interpret the values.
+
+A `nominatim_api.search.Phrase` describes a part of the query that contains one or more independent
+search terms. Breaking a query into phrases helps reducing the number of
+possible tokens Nominatim has to take into account. However a phrase break
+is definitive: a multi-term search word cannot go over a phrase break.
+A Phrase object has two fields:
+
+ * `ptype` further refines the type of phrase (see list below)
+ * `text` contains the query text for the phrase
+
+The order of phrases matters to Nominatim when doing further processing.
+Thus, while you may split or join phrases, you should not reorder them
+unless you really know what you are doing.
+
+Phrase types can further help narrowing down how the tokens in the phrase
+are interpreted. The following phrase types are known:
+
+| Name           | Description |
+|----------------|-------------|
+| PHRASE_ANY     | No specific designation (i.e. source is free-form query) |
+| PHRASE_AMENITY | Contains name or type of a POI |
+| PHRASE_STREET  | Contains a street name optionally with a housenumber |
+| PHRASE_CITY    | Contains the postal city |
+| PHRASE_COUNTY  | Contains the equivalent of a county |
+| PHRASE_STATE   | Contains a state or province |
+| PHRASE_POSTCODE| Contains a postal code |
+| PHRASE_COUNTRY | Contains the country name or code |
+
+
+## Custom sanitizer modules
+
+A sanitizer module must export a single factory function `create` with the
+following signature:
+
+``` python
+def create(config: SanitizerConfig) -> Callable[[ProcessInfo], None]
+```
+
+The function receives the custom configuration for the sanitizer and must
+return a callable (function or class) that transforms the name and address
+terms of a place. When a place is processed, then a `ProcessInfo` object
+is created from the information that was queried from the database. This
+object is sequentially handed to each configured sanitizer, so that each
+sanitizer receives the result of processing from the previous sanitizer.
+After the last sanitizer is finished, the resulting name and address lists
+are forwarded to the token analysis module.
+
+Sanitizer functions are instantiated once and then called for each place
+that is imported or updated. They don't need to be thread-safe.
+If multi-threading is used, each thread creates their own instance of
+the function.
+
+### Sanitizer configuration
+
+::: nominatim_db.tokenizer.sanitizers.config.SanitizerConfig
+    options:
+        heading_level: 6
+
+### The main filter function of the sanitizer
+
+The filter function receives a single object of type `ProcessInfo`
+which has with three members:
+
+ * `place: PlaceInfo`: read-only information about the place being processed.
+   See PlaceInfo below.
+ * `names: List[PlaceName]`: The current list of names for the place.
+ * `address: List[PlaceName]`: The current list of address names for the place.
+
+While the `place` member is provided for information only, the `names` and
+`address` lists are meant to be manipulated by the sanitizer. It may add and
+remove entries, change information within a single entry (for example by
+adding extra attributes) or completely replace the list with a different one.
+
+#### PlaceInfo - information about the place
+
+::: nominatim_db.data.place_info.PlaceInfo
+    options:
+        heading_level: 6
+
+
+#### PlaceName - extended naming information
+
+::: nominatim_db.data.place_name.PlaceName
+    options:
+        heading_level: 6
+
+
+### Example: Filter for US street prefixes
+
+The following sanitizer removes the directional prefixes from street names
+in the US:
+
+!!! example
+    ``` python
+    import re
+
+    def _filter_function(obj):
+        if obj.place.country_code == 'us' \
+           and obj.place.rank_address >= 26 and obj.place.rank_address <= 27:
+            for name in obj.names:
+                name.name = re.sub(r'^(north|south|west|east) ',
+                                   '',
+                                   name.name,
+                                   flags=re.IGNORECASE)
+
+    def create(config):
+        return _filter_function
+    ```
+
+This is the most simple form of a sanitizer module. If defines a single
+filter function and implements the required `create()` function by returning
+the filter.
+
+The filter function first checks if the object is interesting for the
+sanitizer. Namely it checks if the place is in the US (through `country_code`)
+and it the place is a street (a `rank_address` of 26 or 27). If the
+conditions are met, then it goes through all available names and
+removes any leading directional prefix using a simple regular expression.
+
+Save the source code in a file in your project directory, for example as
+`us_streets.py`. Then you can use the sanitizer in your `icu_tokenizer.yaml`:
+
+``` yaml
+...
+sanitizers:
+    - step: us_streets.py
+...
+```
+
+!!! warning
+    This example is just a simplified show case on how to create a sanitizer.
+    It is not really meant for real-world use: while the sanitizer would
+    correctly transform `West 5th Street` into `5th Street`. it would also
+    shorten a simple `North Street` to `Street`.
+
+For more sanitizer examples, have a look at the sanitizers provided by Nominatim.
+They can be found in the directory
+[`src/nominatim_db/tokenizer/sanitizers`](https://github.com/osm-search/Nominatim/tree/master/src/nominatim_db/tokenizer/sanitizers).
+
+
+## Custom token analysis module
+
+::: nominatim_db.tokenizer.token_analysis.base.AnalysisModule
+    options:
+        heading_level: 6
+
+
+::: nominatim_db.tokenizer.token_analysis.base.Analyzer
+    options:
+        heading_level: 6
+
+### Example: Creating acronym variants for long names
+
+The following example of a token analysis module creates acronyms from
+very long names and adds them as a variant:
+
+``` python
+class AcronymMaker:
+    """ This class is the actual analyzer.
+    """
+    def __init__(self, norm, trans):
+        self.norm = norm
+        self.trans = trans
+
+
+    def get_canonical_id(self, name):
+        # In simple cases, the normalized name can be used as a canonical id.
+        return self.norm.transliterate(name.name).strip()
+
+
+    def compute_variants(self, name):
+        # The transliterated form of the name always makes up a variant.
+        variants = [self.trans.transliterate(name)]
+
+        # Only create acronyms from very long words.
+        if len(name) > 20:
+            # Take the first letter from each word to form the acronym.
+            acronym = ''.join(w[0] for w in name.split())
+            # If that leds to an acronym with at least three letters,
+            # add the resulting acronym as a variant.
+            if len(acronym) > 2:
+                # Never forget to transliterate the variants before returning them.
+                variants.append(self.trans.transliterate(acronym))
+
+        return variants
+
+# The following two functions are the module interface.
+
+def configure(rules, normalizer, transliterator):
+    # There is no configuration to parse and no data to set up.
+    # Just return an empty configuration.
+    return None
+
+
+def create(normalizer, transliterator, config):
+    # Return a new instance of our token analysis class above.
+    return AcronymMaker(normalizer, transliterator)
+```
+
+Given the name `Trans-Siberian Railway`, the code above would return the full
+name `Trans-Siberian Railway` and the acronym `TSR` as variant, so that
+searching would work for both.
+
+## Sanitizers vs. Token analysis - what to use for variants?
+
+It is not always clear when to implement variations in the sanitizer and
+when to write a token analysis module. Just take the acronym example
+above: it would also have been possible to write a sanitizer which adds the
+acronym as an additional name to the name list. The result would have been
+similar. So which should be used when?
+
+The most important thing to keep in mind is that variants created by the
+token analysis are only saved in the word lookup table. They do not need
+extra space in the search index. If there are many spelling variations, this
+can mean quite a significant amount of space is saved.
+
+When creating additional names with a sanitizer, these names are completely
+independent. In particular, they can be fed into different token analysis
+modules. This gives a much greater flexibility but at the price that the
+additional names increase the size of the search index.
+

docs/develop/Indexing.md

@@ -0,0 +1,152 @@
+# Indexing Places
+
+In Nominatim, the word __indexing__ refers to the process that takes the raw
+OpenStreetMap data from the place table, enriches it with address information
+and creates the search indexes. This section explains the basic data flow.
+
+
+## Initial import
+
+After osm2pgsql has loaded the raw OSM data into the place table,
+the data is copied to the final search tables placex and location_property_osmline.
+While they are copied, some basic properties are added:
+
+ * country_code, geometry_sector and partition
+ * initial search and address rank
+
+In addition the column `indexed_status` is set to `1` marking the place as one
+that needs to be indexed.
+
+All this happens in the triggers `placex_insert` and `osmline_insert`.
+
+## Indexing
+
+The main work horse of the data import is the indexing step, where Nominatim
+takes every place from the placex and location_property_osmline tables where
+the indexed_status != 0 and computes the search terms and the address parts
+of the place.
+
+The indexing happens in three major steps:
+
+1. **Data preparation** - The indexer gets the data for the place to be indexed
+   from the database.
+
+2. **Search name processing** - The prepared data is given to the
+   tokenizer which computes the search terms from the names
+   and potentially other information.
+
+3. **Address processing** - The indexer then hands the prepared data and the
+   tokenizer information back to the database via an `INSERT` statement which
+   also sets the indexed_status to `0`. This triggers the update triggers
+   `placex_update`/`osmline_update` which do the work of computing address
+   parts and filling all the search tables.
+
+When computing the address terms of a place, Nominatim relies on the processed
+search names of all the address parts. That is why places are processed in rank
+order, from smallest rank to largest. To ensure correct handling of linked
+place nodes, administrative boundaries are processed before all other places.
+
+Apart from these restrictions, each place can be indexed independently
+from the others. This allows a large degree of parallelization during the indexing.
+It also means that the indexing process can be interrupted at any time and
+will simply pick up where it left of when restarted.
+
+### Data preparation
+
+The data preparation step computes and retrieves all data for a place that
+might be needed for the next step of processing the search name. That includes
+
+* location information (country code)
+* place classification (class, type, ranks)
+* names (including names of linked places)
+* address information (`addr:*` tags)
+
+Data preparation is implemented in pl/PgSQL mostly in the functions
+`placex_indexing_prepare()` and `get_interpolation_address()`.
+
+#### `addr:*` tag inheritance
+
+Nominatim has limited support for inheriting address tags from a building
+to POIs inside the building. This only works when the address tags are on the
+building outline. Any rank 30 object inside such a building or on its outline
+inherits all address tags when it does not have any address tags of its own.
+
+The inheritance is computed in the data preparation step.
+
+### Search name processing
+
+The prepared place information is handed to the tokenizer next. This is a
+Python module responsible for processing the names  from both name and address
+terms and building up the word index from them. The process is explained in
+more detail in the [Tokenizer chapter](Tokenizers.md).
+
+### Address processing
+
+Finally, the preprocessed place information and the results of the search name
+processing are written back to the database. At this point the update trigger
+of the placex/location_property_osmline tables take over and fill all the
+dependent tables. This makes up the most work-intensive part of the indexing.
+
+Nominatim distinguishes between dependent and independent places.
+**Dependent places** are all places on rank 30: house numbers, POIs etc. These
+places don't have a full address of their own. Instead they are attached to
+a parent street or place and use the information of the parent for searching
+and displaying information. Everything else are **independent places**: streets,
+parks, water bodies, suburbs, cities, states etc.  They receive a full address
+on their own.
+
+The address processing for both types of places is very different.
+
+#### Independent places
+
+To compute the address of an independent place Nominatim searches for all
+places that cover the place to compute the address for at least partially.
+For places with an area, that area is used to check for coverage. For place
+nodes an artificial square area is computed according to the rank of
+the place. The lower the rank the lager the area. The `location_area_large_X`
+tables are there to facilitate the lookup. All places that can function as
+the address of another place are saved in those tables.
+
+`addr:*` and `isin:*` tags are taken into account to compute the address, too.
+Nominatim will give preference to places with the same name as in these tags
+when looking for places in the vicinity. If there are no matching place names
+at all, then the tags are at least added to the search index. That means that
+the names will not be shown in the result as the 'address' of the place, but
+searching by them still works.
+
+Independent places are always added to the global search index `search_name`.
+
+#### Dependent places
+
+Dependent places skip the full address computation for performance reasons.
+Instead they just find a parent place to attach themselves to.
+
+![parenting of dependent places](parenting-flow.svg)
+
+By default a POI
+or house number will be attached to the closest street. That can be any major
+or minor street indexed by Nominatim. In the default configuration that means
+that it can attach itself to a footway but only when it has a name.
+
+When the dependent place has an `addr:street` tag, then Nominatim will first
+try to find a street with the same name before falling back to the closest
+street.
+
+There are also addresses in OSM, where the housenumber does not belong
+to a street at all. These have an `addr:place` tag. For these places, Nominatim
+tries to find a place with the given name in the indexed places with an
+address rank between 16 and 25. If none is found, then the dependent place
+is attached to the closest place in that category and the addr:place name is
+added as *unlisted* place, which indicates to Nominatim that it needs to add
+it to the address output, no matter what. This special case is necessary to
+cover addresses that don't really refer to an existing object.
+
+When an address has both the `addr:street` and `addr:place` tag, then Nominatim
+assumes that the `addr:place` tag in fact should be the city part of the address
+and give the POI the usual street number address.
+
+Dependent places are only added to the global search index `search_name` when
+they have either a name themselves or when they have address tags that are not
+covered by the places that make up their address. The latter ensures that
+addresses are always searchable by those address tags.
+

docs/develop/Testing.md

@@ -0,0 +1,129 @@
+# Nominatim Test Suite
+
+This chapter describes the tests in the `/test` directory, how they are
+structured and how to extend them. For a quick introduction on how to run
+the tests, see the [Development setup chapter](Development-Environment.md).
+
+## Overall structure
+
+There are two kind of tests in this test suite. There are functional tests
+which test the API interface using a BDD test framework and there are unit
+tests for the Python code.
+
+This test directory is structured as follows:
+
+```
+ -+-   bdd         Functional API tests
+  | \
+  | +-  steps      Step implementations for test descriptions
+  | +-  osm2pgsql  Tests for data import via osm2pgsql
+  | +-  db         Tests for internal data processing on import and update
+  | +-  api        Tests for API endpoints (search, reverse, etc.)
+  |
+  +-   python      Python unit tests
+  +-   testdb      Base data for generating API test database
+  +-   testdata    Additional test data used by unit tests
+```
+
+## Python Unit Tests (`test/python`)
+
+Unit tests for Python code can be found in the `python/` directory. The goal is
+to have complete coverage of the Python library in `nominatim`.
+
+To execute the tests run
+
+    py.test-3 test/python
+
+or
+
+    pytest test/python
+
+The name of the pytest binary depends on your installation.
+
+## BDD Functional Tests (`test/bdd`)
+
+Functional tests are written as BDD instructions. For more information on
+the philosophy of BDD testing, read the Wikipedia article on
+[Behaviour-driven development](https://en.wikipedia.org/wiki/Behavior-driven_development).
+
+### General Usage
+
+To run the functional tests, do
+
+    pytest test/bdd
+
+You can run a single feature file using expression matching:
+
+    pytest test/bdd -k osm2pgsql/import/entrances.feature
+
+This even works for running single tests by adding the line number of the
+scenario header like that:
+
+    pytest test/bdd -k 'osm2pgsql/import/entrances.feature and L4'
+
+The BDD tests create databases for the tests. You can set name of the databases
+through configuration variables in your `pytest.ini`:
+
+ * `nominatim_test_db` defines the name of the temporary database created for
+    a single test (default: `test_nominatim`)
+ * `nominatim_api_test_db` defines the name of the database containing
+    the API test data, see also below (default: `test_api_nominatim`)
+ * `nominatim_template_db` defines the name of the template database used
+    for creating the temporary test databases. It contains some static setup
+    which usually doesn't change between imports of OSM data
+    (default: `test_template_nominatim`)
+
+To change other connection parameters for the PostgreSQL database, use
+the [libpq enivronment variables](https://www.postgresql.org/docs/current/libpq-envars.html).
+Never set a password through these variables. Use a
+[password file](https://www.postgresql.org/docs/current/libpq-pgpass.html) instead.
+
+The API test database and the template database are only created once and then
+left untouched. This is usually what you want because it speeds up subsequent
+runs of BDD tests. If you do change code that has an influence on the content
+of these databases, you can run pytest with the `--nominatim-purge` parameter
+and the databases will be dropped and recreated from scratch.
+
+When running the BDD tests with make (using `make tests` or `make bdd`), then
+the databases will always be purged.
+
+The temporary test database is usually dropped directly after the test, so
+it does not take up unnecessary space. If you want to keep the database around,
+for example while debugging a specific BDD test, use the parameter
+`--nominatim-keep-db`.
+
+
+### API Tests (`test/bdd/api`)
+
+These tests are meant to test the different API endpoints and their parameters.
+They require to import several datasets into a test database. This is normally
+done automatically during setup of the test. The API test database is then
+kept around and reused in subsequent runs of behave. Use `--nominatim-purge`
+to force a reimport of the database.
+
+The official test dataset is saved in the file `test/testdb/apidb-test-data.pbf`
+and compromises the following data:
+
+ * Geofabrik extract of Liechtenstein
+ * extract of Autauga country, Alabama, US (for tests against Tiger data)
+ * additional data from `test/testdb/additional_api_test.data.osm`
+
+API tests should only be testing the functionality of the website frontend code.
+Most tests should be formulated as BDD DB creation tests (see below) instead.
+
+### DB Creation Tests (`test/bdd/db`)
+
+These tests check the import and update of the Nominatim database. They do not
+test the correctness of osm2pgsql. Each test will write some data into the `place`
+table (and optionally the `planet_osm_*` tables if required) and then run
+Nominatim's processing functions on that.
+
+These tests use the template database and create temporary test databases for
+each test.
+
+### Import Tests (`test/bdd/osm2pgsql`)
+
+These tests check that data is imported correctly into the place table.
+
+These tests also use the template database and create temporary test databases
+for each test.

docs/develop/Tokenizers.md

@@ -0,0 +1,307 @@
+# Tokenizers
+
+The tokenizer is the component of Nominatim that is responsible for
+analysing names of OSM objects and queries. Nominatim provides different
+tokenizers that use different strategies for normalisation. This page describes
+how tokenizers are expected to work and the public API that needs to be
+implemented when creating a new tokenizer. For information on how to configure
+a specific tokenizer for a database see the
+[tokenizer chapter in the Customization Guide](../customize/Tokenizers.md).
+
+## Generic Architecture
+
+### About Search Tokens
+
+Search in Nominatim is organised around search tokens. Such a token represents
+string that can be part of the search query. Tokens are used so that the search
+index does not need to be organised around strings. Instead the database saves
+for each place which tokens match this place's name, address, house number etc.
+To be able to distinguish between these different types of information stored
+with the place, a search token also always has a certain type: name, house number,
+postcode etc.
+
+During search an incoming query is transformed into a ordered list of such
+search tokens (or rather many lists, see below) and this list is then converted
+into a database query to find the right place.
+
+It is the core task of the tokenizer to create, manage and assign the search
+tokens. The tokenizer is involved in two distinct operations:
+
+* __at import time__: scanning names of OSM objects, normalizing them and
+  building up the list of search tokens.
+* __at query time__: scanning the query and returning the appropriate search
+  tokens.
+
+
+### Importing
+
+The indexer is responsible to enrich an OSM object (or place) with all data
+required for geocoding. It is split into two parts: the controller collects
+the places that require updating, enriches the place information as required
+and hands the place to Postgresql. The collector is part of the Nominatim
+library written in Python. Within Postgresql, the `placex_update`
+trigger is responsible to fill out all secondary tables with extra geocoding
+information. This part is written in PL/pgSQL.
+
+The tokenizer is involved in both parts. When the indexer prepares a place,
+it hands it over to the tokenizer to inspect the names and create all the
+search tokens applicable for the place. This usually involves updating the
+tokenizer's internal token lists and creating a list of all token IDs for
+the specific place. This list is later needed in the PL/pgSQL part where the
+indexer needs to add the token IDs to the appropriate search tables. To be
+able to communicate the list between the Python part and the pl/pgSQL trigger,
+the `placex` table contains a special JSONB column `token_info` which is there
+for the exclusive use of the tokenizer.
+
+The Python part of the tokenizer returns a structured information about the
+tokens of a place to the indexer which converts it to JSON and inserts it into
+the `token_info` column. The content of the column is then handed to the PL/pqSQL
+callbacks of the tokenizer which extracts the required information. Usually
+the tokenizer then removes all information from the `token_info` structure,
+so that no information is ever persistently saved in the table. All information
+that went in should have been processed after all and put into secondary tables.
+This is however not a hard requirement. If the tokenizer needs to store
+additional information about a place permanently, it may do so in the
+`token_info` column. It just may never execute searches over it and
+consequently not create any special indexes on it.
+
+### Querying
+
+At query time, Nominatim builds up multiple _interpretations_ of the search
+query. Each of these interpretations is tried against the database in order
+of the likelihood with which they match to the search query. The first
+interpretation that yields results wins.
+
+The interpretations are encapsulated in the `SearchDescription` class. An
+instance of this class is created by applying a sequence of
+_search tokens_ to an initially empty SearchDescription. It is the
+responsibility of the tokenizer to parse the search query and derive all
+possible sequences of search tokens. To that end the tokenizer needs to parse
+the search query and look up matching words in its own data structures.
+
+## Tokenizer API
+
+The following section describes the functions that need to be implemented
+for a custom tokenizer implementation.
+
+!!! warning
+    This API is currently in early alpha status. While this API is meant to
+    be a public API on which other tokenizers may be implemented, the API is
+    far away from being stable at the moment.
+
+### Directory Structure
+
+Nominatim expects two files containing the Python part of the implementation:
+
+ * `src/nominatim_db/tokenizer/<NAME>_tokenizer.py` contains the tokenizer
+   code used during import and
+ * `src/nominatim_api/search/<NAME>_tokenizer.py` has the code used during
+   query time.
+
+`<NAME>` is a unique name for the tokenizer consisting of only lower-case
+letters, digits and underscore. A tokenizer also needs to install some SQL
+functions. By convention, these should be placed in `lib-sql/tokenizer`.
+
+If the tokenizer has a default configuration file, this should be saved in
+`settings/<NAME>_tokenizer.<SUFFIX>`.
+
+### Configuration and Persistence
+
+Tokenizers may define custom settings for their configuration. All settings
+must be prefixed with `NOMINATIM_TOKENIZER_`. Settings may be transient or
+persistent. Transient settings are loaded from the configuration file when
+Nominatim is started and may thus be changed at any time. Persistent settings
+are tied to a database installation and must only be read during installation
+time. If they are needed for the runtime then they must be saved into the
+`nominatim_properties` table and later loaded from there.
+
+### The Python modules
+
+#### `src/nominatim_db/tokenizer/`
+
+The import Python module is expected to export a single factory function:
+
+```python
+def create(dsn: str, data_dir: Path) -> AbstractTokenizer
+```
+
+The `dsn` parameter contains the DSN of the Nominatim database. The `data_dir`
+is a directory in the project directory that the tokenizer may use to save
+database-specific data. The function must return the instance of the tokenizer
+class as defined below.
+
+#### `src/nominatim_api/search/`
+
+The query-time Python module must also export a factory function:
+
+``` python
+def create_query_analyzer(conn: SearchConnection) -> AbstractQueryAnalyzer
+```
+
+The `conn` parameter contains the current search connection. See the
+[library documentation](../library/Low-Level-DB-Access.md#searchconnection-class)
+for details on the class. The function must return the instance of the tokenizer
+class as defined below.
+
+
+### Python Tokenizer Class
+
+All tokenizers must inherit from `nominatim_db.tokenizer.base.AbstractTokenizer`
+and implement the abstract functions defined there.
+
+::: nominatim_db.tokenizer.base.AbstractTokenizer
+    options:
+        heading_level: 6
+
+### Python Analyzer Class
+
+::: nominatim_db.tokenizer.base.AbstractAnalyzer
+    options:
+        heading_level: 6
+
+
+### Python Query Analyzer Class
+
+::: nominatim_api.search.query_analyzer_factory.AbstractQueryAnalyzer
+    options:
+        heading_level: 6
+
+### PL/pgSQL Functions
+
+The tokenizer must provide access functions for the `token_info` column
+to the indexer which extracts the necessary information for the global
+search tables. If the tokenizer needs additional SQL functions for private
+use, then these functions must be prefixed with `token_` in order to ensure
+that there are no naming conflicts with the SQL indexer code.
+
+The following functions are expected:
+
+```sql
+FUNCTION token_get_name_search_tokens(info JSONB) RETURNS INTEGER[]
+```
+
+Return an array of token IDs of search terms that should match
+the name(s) for the given place. These tokens are used to look up the place
+by name and, where the place functions as part of an address for another place,
+by address. Must return NULL when the place has no name.
+
+```sql
+FUNCTION token_get_name_match_tokens(info JSONB) RETURNS INTEGER[]
+```
+
+Return an array of token IDs of full names of the place that should be used
+to match addresses. The list of match tokens is usually more strict than
+search tokens as it is used to find a match between two OSM tag values which
+are expected to contain matching full names. Partial terms should not be
+used for match tokens. Must return NULL when the place has no name.
+
+```sql
+FUNCTION token_get_housenumber_search_tokens(info JSONB) RETURNS INTEGER[]
+```
+
+Return an array of token IDs of house number tokens that apply to the place.
+Note that a place may have multiple house numbers, for example when apartments
+each have their own number. Must be NULL when the place has no house numbers.
+
+```sql
+FUNCTION token_normalized_housenumber(info JSONB) RETURNS TEXT
+```
+
+Return the house number(s) in the normalized form that can be matched against
+a house number token text. If a place has multiple house numbers they must
+be listed with a semicolon as delimiter. Must be NULL when the place has no
+house numbers.
+
+```sql
+FUNCTION token_is_street_address(info JSONB) RETURNS BOOLEAN
+```
+
+Return true if this is an object that should be parented against a street.
+Only relevant for objects with address rank 30.
+
+```sql
+FUNCTION token_has_addr_street(info JSONB) RETURNS BOOLEAN
+```
+
+Return true if there are street names to match against for finding the
+parent of the object.
+
+
+```sql
+FUNCTION token_has_addr_place(info JSONB) RETURNS BOOLEAN
+```
+
+Return true if there are place names to match against for finding the
+parent of the object.
+
+```sql
+FUNCTION token_matches_street(info JSONB, street_tokens INTEGER[]) RETURNS BOOLEAN
+```
+
+Check if the given tokens (previously saved from `token_get_name_match_tokens()`)
+match against the `addr:street` tag name. Must return either NULL or FALSE
+when the place has no `addr:street` tag.
+
+```sql
+FUNCTION token_matches_place(info JSONB, place_tokens INTEGER[]) RETURNS BOOLEAN
+```
+
+Check if the given tokens (previously saved from `token_get_name_match_tokens()`)
+match against the `addr:place` tag name. Must return either NULL or FALSE
+when the place has no `addr:place` tag.
+
+
+```sql
+FUNCTION token_addr_place_search_tokens(info JSONB) RETURNS INTEGER[]
+```
+
+Return the search token IDs extracted from the `addr:place` tag. These tokens
+are used for searches by address when no matching place can be found in the
+database. Must be NULL when the place has no `addr:place` tag.
+
+```sql
+FUNCTION token_get_address_keys(info JSONB) RETURNS SETOF TEXT
+```
+
+Return the set of keys for which address information is provided. This
+should correspond to the list of (relevant) `addr:*` tags with the `addr:`
+prefix removed or the keys used in the `address` dictionary of the place info.
+
+```sql
+FUNCTION token_get_address_search_tokens(info JSONB, key TEXT) RETURNS INTEGER[]
+```
+
+Return the array of search tokens for the given address part. `key` can be
+expected to be one of those returned with `token_get_address_keys()`. The
+search tokens are added to the address search vector of the place, when no
+corresponding OSM object could be found for the given address part from which
+to copy the name information.
+
+```sql
+FUNCTION token_matches_address(info JSONB, key TEXT, tokens INTEGER[])
+```
+
+Check if the given tokens match against the address part `key`.
+
+__Warning:__ the tokens that are handed in are the lists previously saved
+from `token_get_name_search_tokens()`, _not_ from the match token list. This
+is an historical oddity which will be fixed at some point in the future.
+Currently, tokenizers are encouraged to make sure that matching works against
+both the search token list and the match token list.
+
+```sql
+FUNCTION token_get_postcode(info JSONB) RETURNS TEXT
+```
+
+Return the postcode for the object, if any exists. The postcode must be in
+the form that should also be presented to the end-user.
+
+```sql
+FUNCTION token_strip_info(info JSONB) RETURNS JSONB
+```
+
+Return the part of the `token_info` field that should be stored in the database
+permanently. The indexer calls this function when all processing is done and
+replaces the content of the `token_info` column with the returned value before
+the trigger stores the information in the database. May return NULL if no
+information should be stored permanently.

docs/develop/address-tables.plantuml

@@ -0,0 +1,35 @@
+@startuml
+skinparam monochrome true
+skinparam ObjectFontStyle bold
+
+map search_name_X {
+  place_id => BIGINT
+  address_rank => SMALLINT
+  name_vector => INT[]
+  centroid => GEOMETRY
+}
+
+map location_area_large_X {
+  place_id => BIGINT
+  keywords => INT[]
+  partition => SMALLINT
+  rank_search => SMALLINT
+  rank_address => SMALLINT
+  country_code => VARCHR(2)
+  isguess => BOOLEAN
+  postcode => TEXT
+  centroid => POINT
+  geometry => GEOMETRY
+}
+
+map location_road_X {
+  place_id => BIGINT
+  partition => SMALLINT
+  country_code => VARCHR(2)
+  geometry => GEOMETRY
+}
+
+search_name_X -[hidden]> location_area_large_X
+location_area_large_X -[hidden]> location_road_X
+
+@enduml

docs/develop/data-sources.md

@@ -0,0 +1,34 @@
+# Additional Data Sources
+
+This guide explains how data sources other than OpenStreetMap mentioned in
+the install instructions got obtained and converted.
+
+## Country grid
+
+Nominatim uses pre-generated country borders data. In case one imports only
+a subset of a country. And to assign each place a partition. Nominatim
+database tables are split into partitions for performance.
+
+More details in [osm-search/country-grid-data](https://github.com/osm-search/country-grid-data).
+
+## US Census TIGER
+
+For the United States you can choose to import additional street-level data.
+The data isn't mixed into OSM data but queried as fallback when no OSM
+result can be found.
+
+More details in [osm-search/TIGER-data](https://github.com/osm-search/TIGER-data).
+
+## GB postcodes
+
+For Great Britain you can choose to import Royalmail postcode centroids.
+
+More details in [osm-search/gb-postcode-data](https://github.com/osm-search/gb-postcode-data).
+
+
+## Wikipedia & Wikidata rankings
+
+Nominatim can import "importance" data of place names. This greatly
+improves ranking of results.
+
+More details in [osm-search/wikipedia-wikidata](https://github.com/osm-search/wikipedia-wikidata).

docs/develop/osm2pgsql-tables.plantuml

@@ -0,0 +1,44 @@
+@startuml
+skinparam monochrome true
+skinparam ObjectFontStyle bold
+
+map planet_osm_nodes #eee {
+  id => BIGINT
+  lat => INT
+  lon => INT
+}
+
+map planet_osm_ways #eee {
+  id => BIGINT
+  nodes => BIGINT[]
+  tags => TEXT[]
+}
+
+map planet_osm_rels #eee {
+  id => BIGINT
+  parts => BIGINT[]
+  members => TEXT[]
+  tags => TEXT[]
+  way_off => SMALLINT
+  rel_off => SMALLINT
+}
+
+map place {
+  osm_type => CHAR(1)
+  osm_id => BIGINT
+  class => TEXT
+  type => TEXT
+  name => HSTORE
+  address => HSTORE
+  extratags => HSTORE
+  admin_level => SMALLINT
+  geometry => GEOMETRY
+}
+
+planet_osm_nodes  -[hidden]> planet_osm_ways
+planet_osm_ways  -[hidden]> planet_osm_rels
+planet_osm_ways -[hidden]-> place
+
+planet_osm_nodes::id <- planet_osm_ways::nodes
+
+@enduml

docs/develop/overview.md

@@ -0,0 +1,24 @@
+# Basic Architecture
+
+Nominatim provides geocoding based on OpenStreetMap data. It uses a PostgreSQL
+database as a backend for storing the data.
+
+There are three basic parts to Nominatim's architecture: the data import,
+the address computation and the search frontend.
+
+The __data import__ stage reads the raw OSM data and extracts all information
+that is useful for geocoding. This part is done by osm2pgsql, the same tool
+that can also be used to import a rendering database. It uses the special
+flex output style defined in the directory `/lib-lua`. The result of
+the import can be found in the database table `place`.
+
+The __address computation__ or __indexing__ stage takes the data from `place`
+and adds additional information needed for geocoding. It ranks the places by
+importance, links objects that belong together and computes addresses and
+the search index. Most of this work is done in PL/pgSQL via database triggers
+and can be found in the files in the `sql/functions/` directory.
+
+The __search frontend__ implements the actual API. It takes search
+and reverse geocoding queries from the user, looks up the data and
+returns the results in the requested format. This part is located in the
+`nominatim-api` package. The source code can be found in `src/nominatim_api`.

docs/develop/parenting-flow.plantuml

@@ -0,0 +1,31 @@
+@startuml
+skinparam monochrome true
+
+start
+
+if (has 'addr:street'?) then (yes)
+  if (street with that name\n nearby?) then (yes)
+    :**Use closest street**
+     **with same name**;
+     kill
+  else (no)
+    :** Use closest**\n**street**;
+     kill
+  endif
+elseif (has 'addr:place'?) then (yes)
+  if (place with that name\n nearby?) then (yes)
+    :**Use closest place**
+     **with same name**;
+     kill
+  else (no)
+    :add addr:place to address;
+    :**Use closest place**\n**rank 16 to 25**;
+     kill
+  endif
+else (otherwise)
+ :**Use closest**\n**street**;
+ kill
+endif
+
+
+@enduml

docs/develop/search-tables.plantuml

@@ -0,0 +1,100 @@
+@startuml
+skinparam monochrome true
+skinparam ObjectFontStyle bold
+
+left to right direction
+
+map placex {
+  place_id => BIGINT
+  osm_type => CHAR(1)
+  osm_id => BIGINT
+  class => TEXT
+  type => TEXT
+  name => HSTORE
+  address => HSTORE
+  extratags => HSTORE
+  admin_level => SMALLINT
+  partition => SMALLINT
+  geometry_sector => INT
+  parent_place_id => BIGINT
+  linked_place_id => BIGINT
+  importance => DOUBLE
+  rank_search => SMALLINT
+  rank_address => SMALLINT
+  wikipedia => TEXT
+  country_code => VARCHAR(2)
+  housenumber => TEXT
+  postcode => TEXT
+  indexed_status => SMALLINT
+  indexed_date => TIMESTAMP
+  centroid => GEOMETRY
+  geometry => GEOMETRY
+}
+
+map search_name {
+  place_id => BIGINT
+  importance => DOUBLE
+  search_rank => SMALLINT
+  address_rank => SMALLINT
+  name_vector => INT[]
+  nameaddress_vector => INT[]
+  country_code => VARCHAR(2)
+  centroid => GEOMETRY
+}
+
+map word {
+  word_id => INT
+  word_token => TEXT
+  ... =>
+}
+
+map location_property_osmline {
+  place_id => BIGINT
+  osm_id => BIGINT
+  startnumber => INT
+  endnumber => INT
+  interpolationtype => TEXT
+  address => HSTORE
+  partition => SMALLINT
+  geometry_sector => INT
+  parent_place_id => BIGINT
+  country_code => VARCHAR(2)
+  postcode => text
+  indexed_status => SMALLINT
+  indexed_date => TIMESTAMP
+  linegeo => GEOMETRY
+}
+
+map place_addressline {
+  place_id => BIGINT
+  address_place_id => BIGINT
+  distance => DOUBLE
+  cached_rank_address => SMALLINT
+  fromarea => BOOLEAN
+  isaddress => BOOLEAN
+}
+
+map location_postcodes {
+  place_id => BIGINT
+  osm_id => BIGINT
+  postcode => TEXT
+  parent_place_id => BIGINT
+  rank_search => SMALLINT
+  indexed_status => SMALLINT
+  indexed_date => TIMESTAMP
+  geometry => GEOMETRY
+  centroid -> GEOMETRY
+}
+
+placex::place_id <-- search_name::place_id
+placex::place_id <-- place_addressline::place_id
+placex::place_id <-- place_addressline::address_place_id
+
+search_name::name_vector --> word::word_id
+search_name::nameaddress_vector --> word::word_id
+
+place_addressline -[hidden]> location_property_osmline
+search_name -[hidden]> place_addressline
+location_property_osmline -[hidden]-> location_postcodes
+
+@enduml

docs/extra.css

@@ -0,0 +1,47 @@
+.toctree-l3 {
+    display: none!important
+}
+
+.md-content {
+    max-width: 800px
+}
+
+table {
+    margin-bottom: 12pt
+}
+
+th, td {
+    padding: 1pt 12pt;
+}
+
+th {
+    background-color: #eee;
+}
+
+.doc-object h6 {
+    margin-bottom: 0.8em;
+    font-size: 130%;
+}
+
+.doc-object {
+    margin-bottom: 1.3em;
+}
+
+.doc-children .doc-contents {
+    margin-left: 3em;
+}
+
+.md-footer__inner {
+    display: none;
+}
+
+.headerlink {
+  filter: grayscale(100%);
+  font-size: 80%;
+}
+
+.simple-table table:not([class]) th,
+.simple-table table:not([class]) td {
+    padding: 2px 4px;
+    background: white;
+}

docs/index.md

@@ -0,0 +1,15 @@
+Nominatim (from the Latin, 'by name') is a tool to search OSM data by name and
+address and to generate synthetic addresses of OSM points (reverse geocoding).
+It has also limited capability to search features by their type
+(pubs, hotels, churches, etc).
+
+This guide comes in five parts:
+
+ * __[API reference](api/Overview.md)__ for users of Nominatim
+ * __[Administration Guide](admin/Installation.md)__ for those who want
+   to install their own Nominatim server
+ * __[Customization Guide](customize/Overview.md)__ for those who want to
+   adapt their own installation to their special requirements
+ * __[Library Guide](library/Getting-Started.md)__ for Python developers who
+   want to use Nominatim as a library in their project
+ * __[Developer's Guide](develop/overview.md)__ for developers of the software

docs/library/Configuration.md

@@ -0,0 +1,33 @@
+# Configuration
+
+When using Nominatim through the library, it can be configured in exactly
+the same way as when running as a service. You may instantiate the library
+against the [project directory](../admin/Import.md#creating-the-project-directory)
+of your Nominatim installation. It contains all files belonging to the
+Nominatim instance. This may include an `.env` file with configuration options.
+Setting configuration parameters via environment variables works as well.
+Alternatively to using the operating system's environment, a set of
+configuration parameters may also be passed to the Nomiantim API object.
+
+Configuration options are resolved in the following order:
+
+* from the OS environment (or the dictionary given in `environ`,
+  (see NominatimAPI.md#nominatim.api.core.NominatimAPI.__init__)
+* from the .env file in the project directory of the installation
+* from the default installation in the configuration directory
+
+For more information on configuration via dotenv and a list of possible
+configuration parameters, see the [Configuration page](../customize/Settings.md).
+
+
+## `Configuration` class
+
+::: nominatim_api.Configuration
+    options:
+        members:
+            - get_bool
+            - get_int
+            - get_str_list
+            - get_path
+        heading_level: 6
+        show_signature_annotations: True

docs/library/Getting-Started.md

@@ -0,0 +1,293 @@
+# Getting Started
+
+The Nominatim search frontend is implemented as a Python library and can as
+such directly be used in Python scripts and applications. You don't need to
+set up a web frontend and access it through HTTP calls. The library gives
+direct access to the Nominatim database through similar search functions as
+offered by the web API. In addition, it will give you a more complete and
+detailed view on the search objects stored in the database.
+
+!!! warning
+
+    The Nominatim library is used for accessing a local Nominatim database.
+    It is not meant to be used against web services of Nominatim like the
+    one on https://nominatim.openstreetmap.org. If you need a Python library
+    to access these web services, have a look at
+    [GeoPy](https://geopy.readthedocs.io). Don't forget to consult the
+    usage policy of the service you want to use before accessing such
+    a web service.
+
+## Installation
+
+To use the Nominatim library, you need access to a local Nominatim database.
+Follow the [installation](../admin/Installation.md) and
+[import](../admin/Import.md) instructions to set up your database.
+
+The Nominatim frontend library is contained in the Python package `nominatim-api`.
+You can install the latest released version directly from pip:
+
+    pip install nominatim-api
+
+To install the package from the source tree directly, run:
+
+    pip install packaging/nominatim-api
+
+Usually you would want to run this in a virtual environment.
+
+## A simple search example
+
+To query the Nominatim database you need to first set up a connection. This
+is done by creating an Nominatim API object. This object exposes all the
+search functions of Nominatim that are also known from its web API.
+
+This code snippet implements a simple search for the town of 'Brugge':
+
+!!! example
+    === "NominatimAPIAsync"
+        ``` python
+        import asyncio
+
+        import nominatim_api as napi
+
+        async def search(query):
+            async with napi.NominatimAPIAsync() as api:
+                return await api.search(query)
+
+        results = asyncio.run(search('Brugge'))
+        if not results:
+            print('Cannot find Brugge')
+        else:
+            print(f'Found a place at {results[0].centroid.x},{results[0].centroid.y}')
+        ```
+
+    === "NominatimAPI"
+        ``` python
+        import nominatim_api as napi
+
+        with napi.NominatimAPI() as api:
+            results = api.search('Brugge')
+
+        if not results:
+            print('Cannot find Brugge')
+        else:
+            print(f'Found a place at {results[0].centroid.x},{results[0].centroid.y}')
+        ```
+
+The Nominatim library is designed around
+[asyncio](https://docs.python.org/3/library/asyncio.html). `NominatimAPIAsync`
+provides you with an interface of coroutines.
+If you have many requests to make, coroutines can speed up your applications
+significantly.
+
+For smaller scripts there is also a synchronous wrapper around the API. By
+using `NominatimAPI`, you get exactly the same interface using classic functions.
+
+The examples in this chapter will always show-case both
+implementations. The documentation itself will usually refer only to
+'Nominatim API class' when both flavours are meant. If a functionality is
+available only for the synchronous or asynchronous version, this will be
+explicitly mentioned.
+
+## Defining which database to use
+
+The [Configuration](../admin/Import.md#configuration-setup-in-env)
+section explains how Nominatim is configured using the
+[dotenv](https://github.com/theskumar/python-dotenv) library.
+The same configuration mechanism is used with the
+Nominatim API library. You should therefore be sure you are familiar with
+the section.
+
+There are three different ways, how configuration options can be set for
+a 'Nominatim API class'. When you have set up your Nominatim database, you
+have normally created a [project directory](../admin/Import.md#creating-the-project-directory)
+which stores the various configuration and customization files that Nominatim
+needs. You may pass the location of the project directory to your
+'Nominatim API class' constructor and it will read the .env file in the
+directory and set the configuration accordingly. Here is the simple search
+example, using the configuration from a pre-defined project directory in
+`/srv/nominatim-project`:
+
+!!! example
+    === "NominatimAPIAsync"
+        ``` python
+        import asyncio
+
+        import nominatim_api as napi
+
+        async def search(query):
+            async with napi.NominatimAPIAsync('/srv/nominatim-project') as api:
+                return await api.search(query)
+
+        results = asyncio.run(search('Brugge'))
+        if not results:
+            print('Cannot find Brugge')
+        else:
+            print(f'Found a place at {results[0].centroid.x},{results[0].centroid.y}')
+        ```
+
+    === "NominatimAPI"
+        ``` python
+        import nominatim_api as napi
+
+        with napi.NominatimAPI('/srv/nominatim-project') as api:
+            results = api.search('Brugge')
+
+        if not results:
+            print('Cannot find Brugge')
+        else:
+            print(f'Found a place at {results[0].centroid.x},{results[0].centroid.y}')
+        ```
+
+
+You may also configure Nominatim by setting environment variables.
+Normally Nominatim will check the operating system environment. Lets
+say you want to look up 'Brugge' in the special database named 'belgium' instead of the
+standard 'nominatim' database. You can run the example script above like this:
+
+```
+NOMINATIM_DATABASE_DSN=pgsql:dbname=belgium python3 example.py
+```
+
+The third option to configure the library is to hand in the configuration
+parameters into the 'Nominatim API class'. Changing the database would look
+like this:
+
+!!! example
+    === "NominatimAPIAsync"
+        ``` python
+        import asyncio
+        import nominatim_api as napi
+
+        config_params = {
+            'NOMINATIM_DATABASE_DSN': 'pgsql:dbname=belgium'
+        }
+
+        async def search(query):
+            async with napi.NominatimAPIAsync(environ=config_params) as api:
+                return await api.search(query)
+
+        results = asyncio.run(search('Brugge'))
+        ```
+
+    === "NominatimAPI"
+        ``` python
+        import nominatim_api as napi
+
+        config_params = {
+            'NOMINATIM_DATABASE_DSN': 'pgsql:dbname=belgium'
+        }
+
+        with napi.NominatimAPI(environ=config_params) as api:
+            results = api.search('Brugge')
+        ```
+
+When the `environ` parameter is given, then only configuration variables
+from this dictionary will be used. The operating system's environment
+variables will be ignored.
+
+## Presenting results to humans
+
+All search functions return full result objects from the database. Such a
+result object contains lots of details: names, address information, OSM tags etc.
+This gives you lots of flexibility what to do with the results.
+
+One of the most common things to get is some kind of human-readable label
+that describes the result in a compact form. Usually this would be the name
+of the object and some parts of the address to explain where in the world
+it is. To create such a label, you need two things:
+
+* the address details of the place
+* all names for the label adapted to the language you wish to use for display
+
+Again searching for 'Brugge', this time with a nicely formatted result:
+
+!!! example
+    === "NominatimAPIAsync"
+        ``` python
+        import asyncio
+
+        import nominatim_api as napi
+
+        async def search(query):
+            async with napi.NominatimAPIAsync() as api:
+                return await api.search(query, address_details=True)
+
+        results = asyncio.run(search('Brugge'))
+
+        locale = napi.Locales(['fr', 'en'])
+        for i, result in enumerate(results):
+            address_parts = result.address_rows.localize(locale)
+            print(f"{i + 1}. {', '.join(address_parts)}")
+        ```
+
+    === "NominatimAPI"
+        ``` python
+        import nominatim_api as napi
+
+        with napi.NominatimAPI() as api:
+            results = api.search('Brugge', address_details=True)
+
+        locale = napi.Locales(['fr', 'en'])
+        for i, result in enumerate(results):
+            address_parts = result.address_rows.localize(locale)
+            print(f"{i + 1}. {', '.join(address_parts)}")
+        ```
+
+To request information about the address of a result, add the optional
+parameter 'address_details' to your search:
+
+``` python
+>>> results = api.search('Brugge', address_details=True)
+```
+
+An additional field `address_rows` will set in results that are returned.
+It contains a list of all places that make up the address of the place. For
+simplicity, this includes name and house number of the place itself. With
+the names in this list it is possible to create a human-readable description
+of the result. To do that, you first need to decide in which language the
+results should be presented. As with the names in the result itself, the
+places in `address_rows` contain all possible name translation for each row.
+
+The library has a helper class `Locales` which helps extracting a name of a
+place in the preferred language. It takes a single parameter with a list
+of language codes in the order of preference. So
+
+``` python
+locale = napi.Locales(['fr', 'en'])
+```
+
+creates a helper class that returns the name preferably in French. If that is
+not possible, it tries English and eventually falls back to the default `name`
+or `ref`.
+
+The `Locales` object can be applied to a name dictionary to return the best-matching
+name out of it:
+
+``` python
+>>> print(locale.display_name(results[0].names))
+'Brugges'
+```
+
+The `address_row` field has a helper function to compute the display name for each Address Line
+component based on its `local_name` field. This is then utilized by the overall `result` object,
+which has a helper function to apply the function to all its ‘address_row’ members and saves
+the result in the `locale_name` field. 
+
+However, in order to set this `local_name` field in a preferred language, you must use the `Locales`
+object which contains the function `localize_results`, which explicitly sets each `local_name field`.
+
+``` python
+>>> Locales().localize_results(results)
+>>> address_parts = results[0].address_rows
+>>> print(', '.join(address_parts))
+Bruges, Flandre-Occidentale, Flandre, Belgique
+```
+
+This is a fairly simple way to create a human-readable description. The
+place information in `address_rows` contains further information about each
+place. For example, which OSM `admin_level` was used, what category the place
+belongs to or what rank Nominatim has assigned. Use this to adapt the output
+to local address formats.
+
+For more information on address rows, see
+[detailed address description](Result-Handling.md#detailed-address-description).

docs/library/Input-Parameter-Types.md

@@ -0,0 +1,60 @@
+# Input Parameter Types
+
+This page describes in more detail some of the input parameter types used
+in the query functions of the API object.
+
+## Place identification
+
+The [details](NominatimAPI.md#nominatim_api.NominatimAPI.details) and
+[lookup](NominatimAPI.md#nominatim_api.NominatimAPI.lookup) functions
+require references to places in the database. Below the possible
+types for place identification are listed. All types are dataclasses.
+
+### PlaceID
+
+::: nominatim_api.PlaceID
+    options:
+        heading_level: 6
+
+### OsmID
+
+::: nominatim_api.OsmID
+    options:
+        heading_level: 6
+
+## Geometry types
+
+::: nominatim_api.GeometryFormat
+    options:
+        heading_level: 6
+        members_order: source
+
+## Geometry input
+
+### Point
+
+::: nominatim_api.Point
+    options:
+        heading_level: 6
+        show_signature_annotations: True
+
+### Bbox
+
+::: nominatim_api.Bbox
+    options:
+        heading_level: 6
+        show_signature_annotations: True
+        members_order: source
+        group_by_category: False
+
+## Layers
+
+Layers allow to restrict the search result to thematic groups. This is
+orthogonal to restriction by address ranks, which groups places by their
+geographic extent.
+
+
+::: nominatim_api.DataLayer
+    options:
+        heading_level: 6
+        members_order: source

docs/library/Low-Level-DB-Access.md

@@ -0,0 +1,55 @@
+# Low-level connections
+
+The `NominatimAPIAsync` class allows to directly access the underlying
+database connection to explore the raw data. Nominatim uses
+[SQLAlchemy](https://docs.sqlalchemy.org/) for building queries. Please
+refer to the documentation of the library to understand how to write SQL.
+
+To get access to a search connection, use the `begin()` function of your
+API object. This returns a `SearchConnection` object described below
+wrapped in a context manager. Its
+`t` property has definitions for all Nominatim search tables. For an
+overview of available tables, refer to the
+[Development Layout](../develop/Database-Layout.md) in in the development
+chapter. Note that only tables that are needed for search are accessible
+as SQLAlchemy tables.
+
+!!! warning
+    The database layout is not part of the API definition and may change
+    without notice. If you play with the low-level access functions, you
+    need to be prepared for such changes.
+
+Here is a simple example, which prints how many places are available in
+the placex table:
+
+```
+import asyncio
+import sqlalchemy as sa
+from nominatim_api import NominatimAPIAsync
+
+async def print_table_size():
+    api = NominatimAPIAsync()
+
+    async with api.begin() as conn:
+        cnt = await conn.scalar(sa.select(sa.func.count()).select_from(conn.t.placex))
+        print(f'placex table has {cnt} rows.')
+
+asyncio.run(print_table_size())
+```
+
+!!! warning
+    Low-level connections may only be used to read data from the database.
+    Do not use it to add or modify data or you might break Nominatim's
+    normal functions.
+
+## SearchConnection class
+
+::: nominatim_api.SearchConnection
+    options:
+        members:
+            - scalar
+            - execute
+            - get_class_table
+            - get_db_property
+            - get_property
+        heading_level: 6

docs/library/NominatimAPI.md

@@ -0,0 +1,36 @@
+# The Nominatim API classes
+
+The API classes are the core object of the search library. Always instantiate
+one of these classes first. The API classes are **not threadsafe**. You need
+to instantiate a separate instance for each thread.
+
+### NominatimAPI
+
+::: nominatim_api.NominatimAPI
+    options:
+        members:
+            - __init__
+            - config
+            - close
+            - status
+            - details
+            - lookup
+            - reverse
+            - search
+            - search_address
+            - search_category
+        heading_level: 6
+        group_by_category: False
+
+
+### NominatimAPIAsync
+
+::: nominatim_api.NominatimAPIAsync
+    options:
+        members:
+            - __init__
+            - setup_database
+            - close
+            - begin
+        heading_level: 6
+        group_by_category: False

docs/library/Result-Handling.md

@@ -0,0 +1,62 @@
+# Result handling
+
+The search functions of the Nominatim API always return a result object
+with the raw information about the place that is available in the
+database. This section discusses data types used in the results and utility
+functions that allow further processing of the results.
+
+## Result fields
+
+### Sources
+
+Nominatim takes the result data from multiple sources. The `source_table` field
+in the result describes, from which source the result was retrieved.
+
+::: nominatim_api.SourceTable
+    options:
+        heading_level: 6
+        members_order: source
+
+### Detailed address description
+
+When the `address_details` parameter is set, then functions return not
+only information about the result place but also about the place that
+make up the address. This information is almost always required when you
+want to present the user with a human-readable description of the result.
+See also [Localization](#localization) below.
+
+The address details are available in the `address_rows` field as a ordered
+list of `AddressLine` objects with the country information last. The list also
+contains the result place itself and some artificial entries, for example,
+for the house number or the country code. This makes processing and creating
+a full address easier.
+
+::: nominatim_api.AddressLine
+    options:
+        heading_level: 6
+        members_order: source
+
+### Detailed search terms
+
+The `details` function can return detailed information about which search terms
+may be used to find a place, when the `keywords` parameter is set. Search
+terms are split into terms for the name of the place and search terms for
+its address.
+
+::: nominatim_api.WordInfo
+    options:
+        heading_level: 6
+
+## Localization
+
+Results are always returned with the full list of available names. However, the
+default `locale_name` must be explicitly set using the `localize` function within
+`Locales`. This parses through the full list of available names to find the one 
+most preferred by the user. Once this is set, the user can simply use the
+`display_name` field within a `Result` object to retrive the localized name.
+
+### Locale
+
+::: nominatim_api.Locales
+    options:
+        heading_level: 6

docs/mk_install_instructions.py

@@ -0,0 +1,33 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+#
+# This file is part of Nominatim. (https://nominatim.org)
+#
+# Copyright (C) 2024 by the Nominatim developer community.
+from pathlib import Path
+
+import mkdocs_gen_files
+
+VAGRANT_PATH = Path(__file__, '..', '..', 'vagrant').resolve()
+
+for infile in VAGRANT_PATH.glob('Install-on-*.sh'):
+    outfile = f"admin/{infile.stem}.md"
+    title = infile.stem.replace('-', ' ')
+
+    with mkdocs_gen_files.open(outfile, "w", encoding='utf-8') as outfd, \
+            infile.open(encoding='utf-8') as infd:
+        print("#", title, file=outfd)
+        has_empty = False
+        for line in infd:
+            line = line.rstrip()
+            docpos = line.find('#DOCS:')
+            if docpos >= 0:
+                line = line[docpos + 6:]
+            elif line == '#' or line.startswith('#!'):
+                line = ''
+            elif line.startswith('# '):
+                line = line[2:]
+            if line or not has_empty:
+                print(line, file=outfd)
+                has_empty = not bool(line)
+
+    mkdocs_gen_files.set_edit_path(outfile, "docs/mk_install_instructions.py")

docs/styles.css

@@ -0,0 +1,69 @@
+.codehilite .hll { background-color: #ffffcc }
+.codehilite  { background: #f0f0f0; }
+.codehilite .c { color: #60a0b0; font-style: italic } /* Comment */
+.codehilite .err { /* border: 1px solid #FF0000 */ } /* Error */
+.codehilite .k { color: #007020; font-weight: bold } /* Keyword */
+.codehilite .o { color: #666666 } /* Operator */
+.codehilite .ch { color: #60a0b0; font-style: italic } /* Comment.Hashbang */
+.codehilite .cm { color: #60a0b0; font-style: italic } /* Comment.Multiline */
+.codehilite .cp { color: #007020 } /* Comment.Preproc */
+.codehilite .cpf { color: #60a0b0; font-style: italic } /* Comment.PreprocFile */
+.codehilite .c1 { color: #60a0b0; font-style: italic } /* Comment.Single */
+.codehilite .cs { color: #60a0b0; background-color: #fff0f0 } /* Comment.Special */
+.codehilite .gd { color: #A00000 } /* Generic.Deleted */
+.codehilite .ge { font-style: italic } /* Generic.Emph */
+.codehilite .gr { color: #FF0000 } /* Generic.Error */
+.codehilite .gh { color: #000080; font-weight: bold } /* Generic.Heading */
+.codehilite .gi { color: #00A000 } /* Generic.Inserted */
+.codehilite .go { color: #888888 } /* Generic.Output */
+.codehilite .gp { color: #c65d09; font-weight: bold } /* Generic.Prompt */
+.codehilite .gs { font-weight: bold } /* Generic.Strong */
+.codehilite .gu { color: #800080; font-weight: bold } /* Generic.Subheading */
+.codehilite .gt { color: #0044DD } /* Generic.Traceback */
+.codehilite .kc { color: #007020; font-weight: bold } /* Keyword.Constant */
+.codehilite .kd { color: #007020; font-weight: bold } /* Keyword.Declaration */
+.codehilite .kn { color: #007020; font-weight: bold } /* Keyword.Namespace */
+.codehilite .kp { color: #007020 } /* Keyword.Pseudo */
+.codehilite .kr { color: #007020; font-weight: bold } /* Keyword.Reserved */
+.codehilite .kt { color: #902000 } /* Keyword.Type */
+.codehilite .m { color: #40a070 } /* Literal.Number */
+.codehilite .s { color: #4070a0 } /* Literal.String */
+.codehilite .na { color: #4070a0 } /* Name.Attribute */
+.codehilite .nb { color: #007020 } /* Name.Builtin */
+.codehilite .nc { color: #0e84b5; font-weight: bold } /* Name.Class */
+.codehilite .no { color: #60add5 } /* Name.Constant */
+.codehilite .nd { color: #555555; font-weight: bold } /* Name.Decorator */
+.codehilite .ni { color: #d55537; font-weight: bold } /* Name.Entity */
+.codehilite .ne { color: #007020 } /* Name.Exception */
+.codehilite .nf { color: #06287e } /* Name.Function */
+.codehilite .nl { color: #002070; font-weight: bold } /* Name.Label */
+.codehilite .nn { color: #0e84b5; font-weight: bold } /* Name.Namespace */
+.codehilite .nt { color: #062873; font-weight: bold } /* Name.Tag */
+.codehilite .nv { color: #bb60d5 } /* Name.Variable */
+.codehilite .ow { color: #007020; font-weight: bold } /* Operator.Word */
+.codehilite .w { color: #bbbbbb } /* Text.Whitespace */
+.codehilite .mb { color: #40a070 } /* Literal.Number.Bin */
+.codehilite .mf { color: #40a070 } /* Literal.Number.Float */
+.codehilite .mh { color: #40a070 } /* Literal.Number.Hex */
+.codehilite .mi { color: #40a070 } /* Literal.Number.Integer */
+.codehilite .mo { color: #40a070 } /* Literal.Number.Oct */
+.codehilite .sa { color: #4070a0 } /* Literal.String.Affix */
+.codehilite .sb { color: #4070a0 } /* Literal.String.Backtick */
+.codehilite .sc { color: #4070a0 } /* Literal.String.Char */
+.codehilite .dl { color: #4070a0 } /* Literal.String.Delimiter */
+.codehilite .sd { color: #4070a0; font-style: italic } /* Literal.String.Doc */
+.codehilite .s2 { color: #4070a0 } /* Literal.String.Double */
+.codehilite .se { color: #4070a0; font-weight: bold } /* Literal.String.Escape */
+.codehilite .sh { color: #4070a0 } /* Literal.String.Heredoc */
+.codehilite .si { color: #70a0d0; font-style: italic } /* Literal.String.Interpol */
+.codehilite .sx { color: #c65d09 } /* Literal.String.Other */
+.codehilite .sr { color: #235388 } /* Literal.String.Regex */
+.codehilite .s1 { color: #4070a0 } /* Literal.String.Single */
+.codehilite .ss { color: #517918 } /* Literal.String.Symbol */
+.codehilite .bp { color: #007020 } /* Name.Builtin.Pseudo */
+.codehilite .fm { color: #06287e } /* Name.Function.Magic */
+.codehilite .vc { color: #bb60d5 } /* Name.Variable.Class */
+.codehilite .vg { color: #bb60d5 } /* Name.Variable.Global */
+.codehilite .vi { color: #bb60d5 } /* Name.Variable.Instance */
+.codehilite .vm { color: #bb60d5 } /* Name.Variable.Magic */
+.codehilite .il { color: #40a070 } /* Literal.Number.Integer.Long */

lib-lua/flex-base.lua

@@ -0,0 +1,14 @@
+-- This is just an alias for the Nominatim themepark theme module
+local flex = require('themes/nominatim/init')
+
+function flex.load_topic(name, cfg)
+    local topic_file = debug.getinfo(1, "S").source:sub(2):match("(.*/)") .. 'themes/nominatim/topics/'.. name .. '.lua'
+
+    if topic_file == nil then
+        error('Cannot find topic: ' .. name)
+    end
+
+    loadfile(topic_file)(nil, flex, cfg or {})
+end
+
+return flex

lib-lua/import-address.lua

@@ -0,0 +1,6 @@
+-- This is just an alias for the Nominatim themepark address topic
+local flex = require('flex-base')
+
+flex.load_topic('address')
+
+return flex

lib-lua/import-admin.lua

@@ -0,0 +1,6 @@
+-- This is just an alias for the Nominatim themepark admin topic
+local flex = require('flex-base')
+
+flex.load_topic('admin')
+
+return flex

lib-lua/import-extratags.lua

@@ -0,0 +1,6 @@
+-- This is just an alias for the Nominatim themepark full topic
+local flex = require('flex-base')
+
+flex.load_topic('full', {with_extratags = true})
+
+return flex

lib-lua/import-full.lua

@@ -0,0 +1,6 @@
+-- This is just an alias for the Nominatim themepark full topic
+local flex = require('flex-base')
+
+flex.load_topic('full')
+
+return flex

lib-lua/import-street.lua

@@ -0,0 +1,6 @@
+-- This is just an alias for the Nominatim themepark street topic
+local flex = require('flex-base')
+
+flex.load_topic('street')
+
+return flex