marseymoji/materialize_emoji_images.py

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#!/usr/bin/python
#
# Copyright 2016 Google Inc. All rights reserved.
#
# 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.
"""Create a copy of the emoji images that instantiates aliases, etc. as
symlinks."""
import argparse
import glob
import os
from os import path
import re
import shutil
from nototools import tool_utils
# copied from third_party/color_emoji/add_glyphs.py
EXTRA_SEQUENCES = {
'u1F46A': '1F468_200D_1F469_200D_1F466', # MWB
'u1F491': '1F469_200D_2764_FE0F_200D_1F468', # WHM
'u1F48F': '1F469_200D_2764_FE0F_200D_1F48B_200D_1F468', # WHKM
}
# Flag aliases - from: to
FLAG_ALIASES = {
'BV': 'NO',
'CP': 'FR',
'HM': 'AU',
'SJ': 'NO',
'UM': 'US',
}
OMITTED_FLAGS = set(
'BL BQ DG EA EH FK GF GP GS MF MQ NC PM RE TF WF XK YT'.split())
def _flag_str(ris_pair):
return '_'.join('%04x' % (ord(cp) - ord('A') + 0x1f1e6)
for cp in ris_pair)
def _copy_files(src, dst):
"""Copies files named 'emoji_u*.png' from dst to src, and return a set of
the names with 'emoji_u' and the extension stripped."""
code_strings = set()
tool_utils.check_dir_exists(src)
dst = tool_utils.ensure_dir_exists(dst, clean=True)
for f in glob.glob(path.join(src, 'emoji_u*.png')):
shutil.copy(f, dst)
code_strings.add(path.splitext(path.basename(f))[0][7:])
return code_strings
def _alias_people(code_strings, dst):
"""Create aliases for people in dst, based on code_strings."""
for src, ali in sorted(EXTRA_SEQUENCES.items()):
if src[1:].lower() in code_strings:
src_name = 'emoji_%s.png' % src.lower()
ali_name = 'emoji_u%s.png' % ali.lower()
print 'creating symlink %s -> %s' % (ali_name, src_name)
os.symlink(path.join(dst, src_name), path.join(dst, ali_name))
else:
print >> os.stderr, 'people image %s not found' % src
def _alias_flags(code_strings, dst):
for ali, src in sorted(FLAG_ALIASES.items()):
src_str = _flag_str(src)
if src_str in code_strings:
src_name = 'emoji_u%s.png' % src_str
ali_name = 'emoji_u%s.png' % _flag_str(ali)
print 'creating symlink %s (%s) -> %s (%s)' % (ali_name, ali, src_name, src)
os.symlink(path.join(dst, src_name), path.join(dst, ali_name))
else:
print >> os.stderr, 'flag image %s (%s) not found' % (src_name, src)
def _alias_omitted_flags(code_strings, dst):
UNKNOWN_FLAG = 'fe82b'
if UNKNOWN_FLAG not in code_strings:
print >> os.stderr, 'unknown flag missing'
return
dst_name = 'emoji_u%s.png' % UNKNOWN_FLAG
dst_path = path.join(dst, dst_name)
for ali in sorted(OMITTED_FLAGS):
ali_str = _flag_str(ali)
if ali_str in code_strings:
print >> os.stderr, 'omitted flag %s has image %s' % (ali, ali_str)
continue
ali_name = 'emoji_u%s.png' % ali_str
print 'creating symlink %s (%s) -> unknown_flag (%s)' % (
ali_str, ali, dst_name)
os.symlink(dst_path, path.join(dst, ali_name))
def materialize_images(src, dst):
code_strings = _copy_files(src, dst)
_alias_people(code_strings, dst)
_alias_flags(code_strings, dst)
_alias_omitted_flags(code_strings, dst)
def main():
parser = argparse.ArgumentParser()
parser.add_argument(
'-s', '--srcdir', help='path to input sources', metavar='dir',
default = 'build/compressed_pngs')
parser.add_argument(
'-d', '--dstdir', help='destination for output images', metavar='dir')
args = parser.parse_args()
materialize_images(args.srcdir, args.dstdir)
if __name__ == '__main__':
main()