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277da2ab88
We deployed this header to all the locale files, so make sure we include it in the generated ones too so we don't lose it.
199 lines
8.0 KiB
Python
199 lines
8.0 KiB
Python
#!/usr/bin/python3
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# -*- coding: utf-8 -*-
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#
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# Generate a translit_fraction file from a UnicodeData file.
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# Copyright (C) 2015-2016 Free Software Foundation, Inc.
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# This file is part of the GNU C Library.
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#
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# The GNU C Library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# The GNU C Library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with the GNU C Library; if not, see
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# <http://www.gnu.org/licenses/>.
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'''
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Generate a translit_fraction file from UnicodeData.txt
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To see how this script is used, call it with the “-h” option:
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$ ./gen_translit_fraction -h
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… prints usage message …
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'''
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import argparse
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import time
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import unicode_utils
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def read_input_file(filename):
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'''Reads the original glibc translit_fraction file to get the
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original head and tail.
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We want to replace only the part of the file between
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“translit_start” and “translit_end”
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'''
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head = tail = ''
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with open(filename, mode='r') as translit_file:
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for line in translit_file:
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head = head + line
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if line.startswith('translit_start'):
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break
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for line in translit_file:
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if line.startswith('translit_end'):
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tail = line
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break
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for line in translit_file:
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tail = tail + line
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return (head, tail)
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def output_head(translit_file, unicode_version, head=''):
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'''Write the header of the output file, i.e. the part of the file
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before the “translit_start” line.
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'''
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if ARGS.input_file and head:
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translit_file.write(head)
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else:
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translit_file.write('escape_char /\n')
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translit_file.write('comment_char %\n')
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translit_file.write(unicode_utils.COMMENT_HEADER)
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translit_file.write('\n')
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translit_file.write('% Transliterations of fractions.\n')
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translit_file.write('% Generated automatically from UnicodeData.txt '
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+ 'by gen_translit_fraction.py '
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+ 'on {:s} '.format(time.strftime('%Y-%m-%d'))
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+ 'for Unicode {:s}.\n'.format(unicode_version))
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translit_file.write('% The replacements have been surrounded ')
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translit_file.write('with spaces, because fractions are\n')
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translit_file.write('% often preceded by a decimal number and ')
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translit_file.write('followed by a unit or a math symbol.\n')
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translit_file.write('\n')
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translit_file.write('LC_CTYPE\n')
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translit_file.write('\n')
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translit_file.write('translit_start\n')
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def output_tail(translit_file, tail=''):
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'''Write the tail of the output file'''
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if ARGS.input_file and tail:
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translit_file.write(tail)
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else:
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translit_file.write('translit_end\n')
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translit_file.write('\n')
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translit_file.write('END LC_CTYPE\n')
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def special_decompose(code_point_list):
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'''
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Decompositions which are not in UnicodeData.txt at all but which
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were used in the original translit_fraction file in glibc and
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which seem to make sense. I want to keep the update of
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translit_fraction close to the spirit of the original file,
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therefore I added this special decomposition rules here.
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'''
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special_decompose_dict = {
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(0x2044,): [0x002F], # ⁄ → /
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}
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if tuple(code_point_list) in special_decompose_dict:
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return special_decompose_dict[tuple(code_point_list)]
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else:
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return code_point_list
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def output_transliteration(translit_file):
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'''Write the new transliteration to the output file'''
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translit_file.write('\n')
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for code_point in sorted(unicode_utils.UNICODE_ATTRIBUTES):
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name = unicode_utils.UNICODE_ATTRIBUTES[code_point]['name']
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decomposition = unicode_utils.UNICODE_ATTRIBUTES[
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code_point]['decomposition']
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if decomposition.startswith('<fraction>'):
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decomposition = decomposition[11:]
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decomposed_code_points = [[int(x, 16)
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for x in decomposition.split(' ')]]
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if decomposed_code_points[0]:
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decomposed_code_points[0] = [0x0020] \
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+ decomposed_code_points[0] \
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+ [0x0020]
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while True:
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special_decomposed_code_points = special_decompose(
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decomposed_code_points[-1])
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if (special_decomposed_code_points
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!= decomposed_code_points[-1]):
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decomposed_code_points.append(
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special_decomposed_code_points)
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continue
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special_decomposed_code_points = []
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for decomposed_code_point in decomposed_code_points[-1]:
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special_decomposed_code_points += special_decompose(
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[decomposed_code_point])
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if (special_decomposed_code_points
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== decomposed_code_points[-1]):
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break
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decomposed_code_points.append(
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special_decomposed_code_points)
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translit_file.write('% {:s}\n'.format(name))
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translit_file.write('{:s} '.format(
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unicode_utils.ucs_symbol(code_point)))
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for index in range(0, len(decomposed_code_points)):
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if index > 0:
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translit_file.write(';')
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if len(decomposed_code_points[index]) > 1:
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translit_file.write('"')
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for decomposed_code_point in decomposed_code_points[index]:
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translit_file.write('{:s}'.format(
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unicode_utils.ucs_symbol(decomposed_code_point)))
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if len(decomposed_code_points[index]) > 1:
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translit_file.write('"')
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translit_file.write('\n')
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translit_file.write('\n')
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if __name__ == "__main__":
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PARSER = argparse.ArgumentParser(
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description='''
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Generate a translit_cjk_compat file from UnicodeData.txt.
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''')
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PARSER.add_argument(
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'-u', '--unicode_data_file',
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nargs='?',
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type=str,
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default='UnicodeData.txt',
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help=('The UnicodeData.txt file to read, '
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+ 'default: %(default)s'))
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PARSER.add_argument(
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'-i', '--input_file',
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nargs='?',
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type=str,
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help=''' The original glibc/localedata/locales/translit_fraction
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file.''')
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PARSER.add_argument(
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'-o', '--output_file',
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nargs='?',
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type=str,
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default='translit_fraction.new',
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help='''The new translit_fraction file, default: %(default)s. If the
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original glibc/localedata/locales/translit_fraction file has
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been given as an option, the header up to the
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“translit_start” line and the tail from the “translit_end”
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line to the end of the file will be copied unchanged into the
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output file. ''')
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PARSER.add_argument(
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'--unicode_version',
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nargs='?',
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required=True,
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type=str,
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help='The Unicode version of the input files used.')
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ARGS = PARSER.parse_args()
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unicode_utils.fill_attributes(ARGS.unicode_data_file)
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HEAD = TAIL = ''
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if ARGS.input_file:
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(HEAD, TAIL) = read_input_file(ARGS.input_file)
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with open(ARGS.output_file, mode='w') as TRANSLIT_FILE:
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output_head(TRANSLIT_FILE, ARGS.unicode_version, head=HEAD)
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output_transliteration(TRANSLIT_FILE)
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output_tail(TRANSLIT_FILE, tail=TAIL)
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