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#!/usr/bin/python
"""Post-build changes for Roboto for Android."""
import sys
from fontTools import ttLib
from nototools import font_data
import temporary_touchups
def apply_android_specific_fixes(font):
"""Apply fixes needed for Android."""
# Remove tab, combining keycap, and the arrows from the cmap table.
#
# Arrows are removed to maximize consistency of arrows, since the rest
# of the arrows come from Noto Symbols.
#
# And here are the bugs for the other two issues:
# https://code.google.com/a/google.com/p/roboto/issues/detail?id=51
# https://code.google.com/a/google.com/p/roboto/issues/detail?id=52
font_data.delete_from_cmap(font, [
0x0009, # tab
0x20E3, # combining keycap
0x2191, 0x2193, # vertical arrows
])
# Drop tables not useful on Android
for table in ['LTSH', 'hdmx', 'VDMX', 'gasp']:
if table in font:
del font[table]
def correct_font(source_font_name, target_font_name):
"""Corrects metrics and other meta information."""
font = ttLib.TTFont(source_font_name)
temporary_touchups.apply_temporary_fixes(font)
temporary_touchups.update_version_and_revision(font)
apply_android_specific_fixes(font)
font.save(target_font_name)
def main(argv):
"""Correct the font specified in the command line."""
correct_font(argv[1], argv[2])
if __name__ == "__main__":
main(sys.argv)
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