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glibc/localedata/unicode-gen/utf8_compatibility.py

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#!/usr/bin/python3
# -*- coding: utf-8 -*-
# Copyright (C) 2014-2023 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
#
# The GNU C Library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# The GNU C Library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with the GNU C Library; if not, see
# <https://www.gnu.org/licenses/>.
'''
This script is useful for checking backward compatibility of newly
generated UTF-8 file from utf8_gen.py script
To see how this script is used, call it with the “-h” option:
$ ./utf8_compatibility.py -h
… prints usage message …
'''
import sys
import re
import argparse
import unicode_utils
def create_charmap_dictionary(file_name):
'''Create a dictionary for all code points found in the CHARMAP
section of a file
'''
with open(file_name, mode='r') as utf8_file:
charmap_dictionary = {}
for line in utf8_file:
if line.startswith('CHARMAP'):
break
for line in utf8_file:
if line.startswith('END CHARMAP'):
return charmap_dictionary
if line.startswith('%'):
continue
match = re.match(
r'^<U(?P<codepoint1>[0-9A-F]{4,8})>'
+r'(:?\.\.<U(?P<codepoint2>[0-9-A-F]{4,8})>)?'
+r'\s+(?P<hexutf8>(/x[0-9a-f]{2}){1,4})',
line)
if not match:
continue
codepoint1 = match.group('codepoint1')
codepoint2 = match.group('codepoint2')
if not codepoint2:
codepoint2 = codepoint1
for i in range(int(codepoint1, 16),
int(codepoint2, 16) + 1):
charmap_dictionary[i] = match.group('hexutf8')
sys.stderr.write('No “CHARMAP” or no “END CHARMAP” found in %s\n'
%file_name)
exit(1)
def check_charmap(original_file_name, new_file_name):
'''Report differences in the CHARMAP section between the old and the
new file
'''
print('************************************************************')
print('Report on CHARMAP:')
ocharmap = create_charmap_dictionary(original_file_name)
ncharmap = create_charmap_dictionary(new_file_name)
print('------------------------------------------------------------')
print('Total removed characters in newly generated CHARMAP: %d'
%len(set(ocharmap)-set(ncharmap)))
if ARGS.show_missing_characters:
for key in sorted(set(ocharmap)-set(ncharmap)):
print('removed: {:s} {:s} {:s}'.format(
unicode_utils.ucs_symbol(key),
ocharmap[key],
unicode_utils.UNICODE_ATTRIBUTES[key]['name'] \
if key in unicode_utils.UNICODE_ATTRIBUTES else 'None'))
print('------------------------------------------------------------')
changed_charmap = {}
for key in set(ocharmap).intersection(set(ncharmap)):
if ocharmap[key] != ncharmap[key]:
changed_charmap[key] = (ocharmap[key], ncharmap[key])
print('Total changed characters in newly generated CHARMAP: %d'
%len(changed_charmap))
if ARGS.show_changed_characters:
for key in sorted(changed_charmap):
print('changed: {:s} {:s}->{:s} {:s}'.format(
unicode_utils.ucs_symbol(key),
changed_charmap[key][0],
changed_charmap[key][1],
unicode_utils.UNICODE_ATTRIBUTES[key]['name'] \
if key in unicode_utils.UNICODE_ATTRIBUTES else 'None'))
print('------------------------------------------------------------')
print('Total added characters in newly generated CHARMAP: %d'
%len(set(ncharmap)-set(ocharmap)))
if ARGS.show_added_characters:
for key in sorted(set(ncharmap)-set(ocharmap)):
print('added: {:s} {:s} {:s}'.format(
unicode_utils.ucs_symbol(key),
ncharmap[key],
unicode_utils.UNICODE_ATTRIBUTES[key]['name'] \
if key in unicode_utils.UNICODE_ATTRIBUTES else 'None'))
def create_width_dictionary(file_name):
'''Create a dictionary for all code points found in the WIDTH
section of a file
'''
with open(file_name, mode='r') as utf8_file:
width_dictionary = {}
for line in utf8_file:
if line.startswith('WIDTH'):
break
for line in utf8_file:
if line.startswith('END WIDTH'):
return width_dictionary
match = re.match(
r'^<U(?P<codepoint1>[0-9A-F]{4,8})>'
+r'(:?\.\.\.<U(?P<codepoint2>[0-9-A-F]{4,8})>)?'
+r'\s+(?P<width>[02])',
line)
if not match:
continue
codepoint1 = match.group('codepoint1')
codepoint2 = match.group('codepoint2')
if not codepoint2:
codepoint2 = codepoint1
for i in range(int(codepoint1, 16),
int(codepoint2, 16) + 1):
width_dictionary[i] = int(match.group('width'))
sys.stderr.write('No “WIDTH” or no “END WIDTH” found in %s\n' %file)
def check_width(original_file_name, new_file_name):
'''Report differences in the WIDTH section between the old and the new
file
'''
print('************************************************************')
print('Report on WIDTH:')
owidth = create_width_dictionary(original_file_name)
nwidth = create_width_dictionary(new_file_name)
print('------------------------------------------------------------')
print('Total removed characters in newly generated WIDTH: %d'
%len(set(owidth)-set(nwidth)))
print('(Characters not in WIDTH get width 1 by default, '
+ 'i.e. these have width 1 now.)')
if ARGS.show_missing_characters:
for key in sorted(set(owidth)-set(nwidth)):
print('removed: {:s} '.format(unicode_utils.ucs_symbol(key))
+ '{:d} : '.format(owidth[key])
+ 'eaw={:s} '.format(
unicode_utils.EAST_ASIAN_WIDTHS[key]
if key in unicode_utils.EAST_ASIAN_WIDTHS else 'None')
+ 'category={:2s} '.format(
unicode_utils.UNICODE_ATTRIBUTES[key]['category']
if key in unicode_utils.UNICODE_ATTRIBUTES else 'None')
+ 'bidi={:3s} '.format(
unicode_utils.UNICODE_ATTRIBUTES[key]['bidi']
if key in unicode_utils.UNICODE_ATTRIBUTES else 'None')
+ 'name={:s}'.format(
unicode_utils.UNICODE_ATTRIBUTES[key]['name']
if key in unicode_utils.UNICODE_ATTRIBUTES else 'None'))
print('------------------------------------------------------------')
changed_width = {}
for key in set(owidth).intersection(set(nwidth)):
if owidth[key] != nwidth[key]:
changed_width[key] = (owidth[key], nwidth[key])
print('Total changed characters in newly generated WIDTH: %d'
%len(changed_width))
if ARGS.show_changed_characters:
for key in sorted(changed_width):
print('changed width: {:s} '.format(unicode_utils.ucs_symbol(key))
+ '{:d}->{:d} : '.format(changed_width[key][0],
changed_width[key][1])
+ 'eaw={:s} '.format(
unicode_utils.EAST_ASIAN_WIDTHS[key]
if key in unicode_utils.EAST_ASIAN_WIDTHS else 'None')
+ 'category={:2s} '.format(
unicode_utils.UNICODE_ATTRIBUTES[key]['category']
if key in unicode_utils.UNICODE_ATTRIBUTES else 'None')
+ 'bidi={:3s} '.format(
unicode_utils.UNICODE_ATTRIBUTES[key]['bidi']
if key in unicode_utils.UNICODE_ATTRIBUTES else 'None')
+ 'name={:s}'.format(
unicode_utils.UNICODE_ATTRIBUTES[key]['name']
if key in unicode_utils.UNICODE_ATTRIBUTES else 'None'))
print('------------------------------------------------------------')
print('Total added characters in newly generated WIDTH: %d'
%len(set(nwidth)-set(owidth)))
print('(Characters not in WIDTH get width 1 by default, '
+ 'i.e. these had width 1 before.)')
if ARGS.show_added_characters:
for key in sorted(set(nwidth)-set(owidth)):
print('added: {:s} '.format(unicode_utils.ucs_symbol(key))
+ '{:d} : '.format(nwidth[key])
+ 'eaw={:s} '.format(
unicode_utils.EAST_ASIAN_WIDTHS[key]
if key in unicode_utils.EAST_ASIAN_WIDTHS else 'None')
+ 'category={:2s} '.format(
unicode_utils.UNICODE_ATTRIBUTES[key]['category']
if key in unicode_utils.UNICODE_ATTRIBUTES else 'None')
+ 'bidi={:3s} '.format(
unicode_utils.UNICODE_ATTRIBUTES[key]['bidi']
if key in unicode_utils.UNICODE_ATTRIBUTES else 'None')
+ 'name={:s}'.format(
unicode_utils.UNICODE_ATTRIBUTES[key]['name']
if key in unicode_utils.UNICODE_ATTRIBUTES else 'None'))
if __name__ == "__main__":
PARSER = argparse.ArgumentParser(
description='''
Compare the contents of LC_CTYPE in two files and check for errors.
''')
PARSER.add_argument(
'-o', '--old_utf8_file',
nargs='?',
required=True,
type=str,
help='The old UTF-8 file.')
PARSER.add_argument(
'-n', '--new_utf8_file',
nargs='?',
required=True,
type=str,
help='The new UTF-8 file.')
PARSER.add_argument(
'-u', '--unicode_data_file',
nargs='?',
type=str,
help='The UnicodeData.txt file to read.')
PARSER.add_argument(
'-e', '--east_asian_width_file',
nargs='?',
type=str,
help='The EastAsianWidth.txt file to read.')
PARSER.add_argument(
'-a', '--show_added_characters',
action='store_true',
help='Show characters which were added in detail.')
PARSER.add_argument(
'-m', '--show_missing_characters',
action='store_true',
help='Show characters which were removed in detail.')
PARSER.add_argument(
'-c', '--show_changed_characters',
action='store_true',
help='Show characters whose width was changed in detail.')
ARGS = PARSER.parse_args()
if ARGS.unicode_data_file:
unicode_utils.fill_attributes(ARGS.unicode_data_file)
if ARGS.east_asian_width_file:
unicode_utils.fill_east_asian_widths(ARGS.east_asian_width_file)
check_charmap(ARGS.old_utf8_file, ARGS.new_utf8_file)
check_width(ARGS.old_utf8_file, ARGS.new_utf8_file)
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