]>
Commit | Line | Data |
---|---|---|
dd8e8e54 CD |
1 | #!/usr/bin/python3 |
2 | # -*- coding: utf-8 -*- | |
3 | # | |
4 | # Generate a translit_fraction file from a UnicodeData file. | |
04277e02 | 5 | # Copyright (C) 2015-2019 Free Software Foundation, Inc. |
dd8e8e54 CD |
6 | # This file is part of the GNU C Library. |
7 | # | |
8 | # The GNU C Library is free software; you can redistribute it and/or | |
9 | # modify it under the terms of the GNU Lesser General Public | |
10 | # License as published by the Free Software Foundation; either | |
11 | # version 2.1 of the License, or (at your option) any later version. | |
12 | # | |
13 | # The GNU C Library is distributed in the hope that it will be useful, | |
14 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | # Lesser General Public License for more details. | |
17 | # | |
18 | # You should have received a copy of the GNU Lesser General Public | |
19 | # License along with the GNU C Library; if not, see | |
5a82c748 | 20 | # <https://www.gnu.org/licenses/>. |
dd8e8e54 CD |
21 | |
22 | ''' | |
23 | Generate a translit_fraction file from UnicodeData.txt | |
24 | ||
25 | To see how this script is used, call it with the “-h” option: | |
26 | ||
27 | $ ./gen_translit_fraction -h | |
28 | … prints usage message … | |
29 | ''' | |
30 | ||
31 | import argparse | |
32 | import time | |
33 | import unicode_utils | |
34 | ||
35 | def read_input_file(filename): | |
36 | '''Reads the original glibc translit_fraction file to get the | |
37 | original head and tail. | |
38 | ||
39 | We want to replace only the part of the file between | |
40 | “translit_start” and “translit_end” | |
41 | ''' | |
42 | head = tail = '' | |
43 | with open(filename, mode='r') as translit_file: | |
44 | for line in translit_file: | |
45 | head = head + line | |
46 | if line.startswith('translit_start'): | |
47 | break | |
48 | for line in translit_file: | |
49 | if line.startswith('translit_end'): | |
50 | tail = line | |
51 | break | |
52 | for line in translit_file: | |
53 | tail = tail + line | |
54 | return (head, tail) | |
55 | ||
56 | def output_head(translit_file, unicode_version, head=''): | |
57 | '''Write the header of the output file, i.e. the part of the file | |
58 | before the “translit_start” line. | |
59 | ''' | |
60 | if ARGS.input_file and head: | |
61 | translit_file.write(head) | |
62 | else: | |
63 | translit_file.write('escape_char /\n') | |
64 | translit_file.write('comment_char %\n') | |
277da2ab | 65 | translit_file.write(unicode_utils.COMMENT_HEADER) |
dd8e8e54 CD |
66 | translit_file.write('\n') |
67 | translit_file.write('% Transliterations of fractions.\n') | |
68 | translit_file.write('% Generated automatically from UnicodeData.txt ' | |
69 | + 'by gen_translit_fraction.py ' | |
70 | + 'on {:s} '.format(time.strftime('%Y-%m-%d')) | |
71 | + 'for Unicode {:s}.\n'.format(unicode_version)) | |
72 | translit_file.write('% The replacements have been surrounded ') | |
73 | translit_file.write('with spaces, because fractions are\n') | |
74 | translit_file.write('% often preceded by a decimal number and ') | |
75 | translit_file.write('followed by a unit or a math symbol.\n') | |
76 | translit_file.write('\n') | |
77 | translit_file.write('LC_CTYPE\n') | |
78 | translit_file.write('\n') | |
79 | translit_file.write('translit_start\n') | |
80 | ||
81 | def output_tail(translit_file, tail=''): | |
82 | '''Write the tail of the output file''' | |
83 | if ARGS.input_file and tail: | |
84 | translit_file.write(tail) | |
85 | else: | |
86 | translit_file.write('translit_end\n') | |
87 | translit_file.write('\n') | |
88 | translit_file.write('END LC_CTYPE\n') | |
89 | ||
90 | def special_decompose(code_point_list): | |
91 | ''' | |
92 | Decompositions which are not in UnicodeData.txt at all but which | |
93 | were used in the original translit_fraction file in glibc and | |
94 | which seem to make sense. I want to keep the update of | |
95 | translit_fraction close to the spirit of the original file, | |
96 | therefore I added this special decomposition rules here. | |
97 | ''' | |
98 | special_decompose_dict = { | |
99 | (0x2044,): [0x002F], # ⁄ → / | |
100 | } | |
101 | if tuple(code_point_list) in special_decompose_dict: | |
102 | return special_decompose_dict[tuple(code_point_list)] | |
103 | else: | |
104 | return code_point_list | |
105 | ||
106 | def output_transliteration(translit_file): | |
107 | '''Write the new transliteration to the output file''' | |
108 | translit_file.write('\n') | |
109 | for code_point in sorted(unicode_utils.UNICODE_ATTRIBUTES): | |
110 | name = unicode_utils.UNICODE_ATTRIBUTES[code_point]['name'] | |
111 | decomposition = unicode_utils.UNICODE_ATTRIBUTES[ | |
112 | code_point]['decomposition'] | |
113 | if decomposition.startswith('<fraction>'): | |
114 | decomposition = decomposition[11:] | |
115 | decomposed_code_points = [[int(x, 16) | |
116 | for x in decomposition.split(' ')]] | |
117 | if decomposed_code_points[0]: | |
118 | decomposed_code_points[0] = [0x0020] \ | |
119 | + decomposed_code_points[0] \ | |
120 | + [0x0020] | |
121 | while True: | |
122 | special_decomposed_code_points = special_decompose( | |
123 | decomposed_code_points[-1]) | |
124 | if (special_decomposed_code_points | |
125 | != decomposed_code_points[-1]): | |
126 | decomposed_code_points.append( | |
127 | special_decomposed_code_points) | |
128 | continue | |
129 | special_decomposed_code_points = [] | |
130 | for decomposed_code_point in decomposed_code_points[-1]: | |
131 | special_decomposed_code_points += special_decompose( | |
132 | [decomposed_code_point]) | |
133 | if (special_decomposed_code_points | |
134 | == decomposed_code_points[-1]): | |
135 | break | |
136 | decomposed_code_points.append( | |
137 | special_decomposed_code_points) | |
138 | translit_file.write('% {:s}\n'.format(name)) | |
139 | translit_file.write('{:s} '.format( | |
140 | unicode_utils.ucs_symbol(code_point))) | |
141 | for index in range(0, len(decomposed_code_points)): | |
142 | if index > 0: | |
143 | translit_file.write(';') | |
144 | if len(decomposed_code_points[index]) > 1: | |
145 | translit_file.write('"') | |
146 | for decomposed_code_point in decomposed_code_points[index]: | |
147 | translit_file.write('{:s}'.format( | |
148 | unicode_utils.ucs_symbol(decomposed_code_point))) | |
149 | if len(decomposed_code_points[index]) > 1: | |
150 | translit_file.write('"') | |
151 | translit_file.write('\n') | |
152 | translit_file.write('\n') | |
153 | ||
154 | if __name__ == "__main__": | |
155 | PARSER = argparse.ArgumentParser( | |
156 | description=''' | |
157 | Generate a translit_cjk_compat file from UnicodeData.txt. | |
158 | ''') | |
159 | PARSER.add_argument( | |
160 | '-u', '--unicode_data_file', | |
161 | nargs='?', | |
162 | type=str, | |
163 | default='UnicodeData.txt', | |
164 | help=('The UnicodeData.txt file to read, ' | |
165 | + 'default: %(default)s')) | |
166 | PARSER.add_argument( | |
167 | '-i', '--input_file', | |
168 | nargs='?', | |
169 | type=str, | |
170 | help=''' The original glibc/localedata/locales/translit_fraction | |
171 | file.''') | |
172 | PARSER.add_argument( | |
173 | '-o', '--output_file', | |
174 | nargs='?', | |
175 | type=str, | |
176 | default='translit_fraction.new', | |
177 | help='''The new translit_fraction file, default: %(default)s. If the | |
178 | original glibc/localedata/locales/translit_fraction file has | |
179 | been given as an option, the header up to the | |
180 | “translit_start” line and the tail from the “translit_end” | |
181 | line to the end of the file will be copied unchanged into the | |
182 | output file. ''') | |
183 | PARSER.add_argument( | |
184 | '--unicode_version', | |
185 | nargs='?', | |
186 | required=True, | |
187 | type=str, | |
188 | help='The Unicode version of the input files used.') | |
189 | ARGS = PARSER.parse_args() | |
190 | ||
191 | unicode_utils.fill_attributes(ARGS.unicode_data_file) | |
192 | HEAD = TAIL = '' | |
193 | if ARGS.input_file: | |
194 | (HEAD, TAIL) = read_input_file(ARGS.input_file) | |
195 | with open(ARGS.output_file, mode='w') as TRANSLIT_FILE: | |
196 | output_head(TRANSLIT_FILE, ARGS.unicode_version, head=HEAD) | |
197 | output_transliteration(TRANSLIT_FILE) | |
198 | output_tail(TRANSLIT_FILE, tail=TAIL) |