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This directory contains tools for time zone updates.
Data update tools
- A helper script run before
It downloads the latest tzdata update from IANA and puts it in
the system/timezone/input_data/iana directory for use by the script.
There are sometimes code and metadata changes associated
with tzdata updates that should be applied to ICU at the same time.
e.g. see
- Regenerates the external/icu and system/timezone/output_data timezone
data files.
CTS tests for ICU, bionic and libcore should be run before and after.