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60 lines
2.0 KiB
60 lines
2.0 KiB
4 months ago
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This directory contains code, tools and data for the AOSP reference location
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time zone provider. Location time zone providers are used for location-based
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time zone detection on Android. See Android's
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android.service.timezone.TimeZoneProviderService class for more details.
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Directory structure
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===================
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`apex`
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- Files associated with a proposed mainline module APEX to hold the AOSP
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reference location time zone provider.
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`common`
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- Utility code shared between several subdirectories.
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`data_pipeline`
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- Code for a host sample / reference data generation pipeline. See
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`run-data-pipeline.sh` below.
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`geotz_lookup`
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- A high-level API for performing time zone ID lookups for a location using
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the `tzs2.dat` file. Supports host and device usage.
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`locationtzprovider`
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- A reference location time zone provider that uses AOSP APIs to obtain
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location and the `geotz_lookup` APIs to obtain the time zone IDs to pass to
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the platform.
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`output_data`
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- Holds the `tzs2.dat` file generated by `run-data-pipeline.sh` along with
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the associated license files.
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`s2storage`
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- File reading / writing code and tools to support `tzs2.dat` generation on
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host, and the file's use on host and device. See `s2storage/README.md` for
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format details.
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`tzbb_data`
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- Data / licenses from the external
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[timezone-boundary-builder](https://github.com/evansiroky/timezone-boundary-builder)
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project. Used as input for the reference data generation pipeline.
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`validation`
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- Tooling to help validate the `tzs2.dat` file against other data sources.
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Data file update tools
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======================
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`download-tzbb-files.sh`
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- Used to refresh the data in `tzbb_data/` from the
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[timezone-boundary-builder](https://github.com/evansiroky/timezone-boundary-builder)
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project.
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`run-data-pipeline.sh`
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- Runs the `data_pipeline` data generation pipeline. It takes data from
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`tzbb_data/`, processes it, and puts the resulting `tzs2.dat` file in
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`output_data/`.
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