de/create_chr.py

#!/usr/bin/env python

# Copyright (C) 2015 The Android Open Source Project
#
# 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.

"""Generate case mappings from German pattern files."""

import codecs

for locale in ['de-1901', 'de-1996', 'de-ch-1901']:
    all_chars = set()
    with codecs.open('hyph-%s.pat.txt' % locale, 'r', 'UTF-8') as pat_file:
        for line in pat_file:
            line = line.strip()
            all_chars |= set(line)
    all_chars.remove('.')
    all_chars -= set('0123456789')

    with codecs.open('hyph-%s.chr.txt' % locale, 'w', 'UTF-8') as chr_file:
        for c in sorted(all_chars):
            # Since Android uses the chr files to map uppercase to lowercase,
            # map lowercase sharp s to uppercase sharp s instead of SS.
            uppercase = u'\u1E9E' if c == u'\u00DF' else c.upper()
            chr_file.write('%s%s\n' % (c, uppercase))