Directories Structure

Platforms

• android/ - Android UI.

• iphone/ - iOS UI.

• xcode/ - XCode workspace.

• qt/ - desktop application.

Data

data/ folder contains data files for the application: maps, styles, country borders, etc.:

• benchmarks/ -

• borders/ - polygons describing countries' borders.

• conf/isolines/ - per-country isoline profiles.

• vulkan_shaders/ -

• countries.txt - map files hierarchy and checksums.

• countries_meta.txt - country/region languages and driving sides.

• hierarchy.txt - countries/map regions hierarchy, languages used and Wikidata IDs.

• faq.html - FAQ text displayed in the "?"/Help screen.

• copyright.html - attributions to 3rd-party libraries, map data, icons, fonts.

• minsk-pass.mwm,minsk-pass.osm.bz2 - a small map used for tests.

There are some other files not mentioned here.

Map features / classificator

• mapcss-mapping.csv - mapping between OSM tags and OM types.

• replaced_tags.txt - merging similar OSM tags.

• mixed_tags.txt - pedestrian streets of high popularity.

• editor.config - built-in OSM data editor configuration (editable POIs, their attributes, etc.).

• config.xsd - XML schema for editor.config.

Automatically generated:

• classificator.txt - hierarchical list of all OM types.
• types.txt

Styles and icons

• symbols/ - symbols for different screen DPIs
• symbols/default/ - default resources used on all sceen DPIs
• symbols-svg/ - social networks icons
• search-icons/svg/ - source SVG files for search categories icons
• styles/ - map style files

Automatically generated:

• symbols/ - icons skin files in various resolutions for dark and light themes.
• drules_proto* - binary drawing rules files.
• colors.txt,patterns.txt,visibility.txt

Strings and translations

Translation files:

• strings/
• categories.txt,categories_cuisines.txt,categories_brands.txt,countries_names.txt

Misc strings:

• countries_synonyms.csv - alternative country names.
• synonyms.txt - country and region names abbreviations and short names.
• languages.txt - native language names.

Automatically generated:

• countries-strings/ - country and map region names JSON localization files.
• sound-strings/ - Text-To-Speech JSON localization files.

Tools

• tools/ - various scripts for building packages and maps, testing, managing translations etc.

• generator/ - map building tool.

• poly_borders/ - borders post-processing tool.

• skin_generator/ - a console app for building skin files with icons and symbols.

• topography_generator/ - generates isolines from SRTM data.

• track_generator/ - generates smooth tracks based on waypoints from KML.

C++ Core

• 3party/ - external libraries, sometimes modified.
• base/ - some base things, like macros, logging, caches etc.
• cmake/ - CMake helper files.
• coding/ - I/O classes and data processing.
• descriptions/ -
• dev_sandbox/ - developer tool for debugging rendering.
• drape_frontend/ - scene and resource manager for the Drape library.
• drape/ - the new graphics library core.
• editor/ - built-in OSM data editor.
• feature_list/ -
• ge0/ - external API of the application.
• geometry/ - geometry primitives we use.
• indexer/ - processor for map files, classificator, styles.
• kml/ - manipulation of KML files.
• map/ - app business logic, including a scene manager.
• openlr/ -
• packaging/ - packaging specs for various distributions.
• platform/ - platform abstraction classes: file paths, http requests, location services.
• qt_tstfrm/ - widgets for visual testing.
• routing_common/ -
• routing/ - in-app routing engine.
• search/ - ranking and searching classes.
• shaders/ - shaders for rendering.
• std/ - standard headers wrappers, for Boost, STL, C-rt.
• storage/ - map reading function.
• testing/ - common interfaces for tests.
• track_analyzing/ -
• tracking/ -
• traffic/ - real-time traffic information.
• transit/ - experimental GTFS-based public transport support.

Documentation

The main docs are in the docs/ directory, however some tools have their own READMEs, etc.