/usr/lib/python2.7/dist-packages/nototools/coverage.py is in python-nototools 0~20170925-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 | #!/usr/bin/env python
#
# Copyright 2014 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.
"""Routines for character coverage of fonts."""
__author__ = 'roozbeh@google.com (Roozbeh Pournader)'
import argparse
import codecs
import os
from os import path
import re
import sys
import unicode_data
from nototools import lint_config
from fontTools import ttLib
def character_set(font):
"""Returns the character coverage of a font.
Args:
font: The input font's file name, or a TTFont.
Returns:
A frozenset listing the characters supported in the font.
"""
if type(font) is str:
font = ttLib.TTFont(font, fontNumber=0)
cmap_table = font['cmap']
cmaps = {}
for table in cmap_table.tables:
if (table.format, table.platformID, table.platEncID) in [
(4, 3, 1), (12, 3, 10)
]:
cmaps[table.format] = table.cmap
if 12 in cmaps:
cmap = cmaps[12]
elif 4 in cmaps:
cmap = cmaps[4]
else:
cmap = {}
return frozenset(cmap.keys())
def convert_set_to_ranges(charset):
"""Converts a set of characters to a list of ranges."""
working_set = set(charset)
output_list = []
while working_set:
start = min(working_set)
end = start + 1
while end in working_set:
end += 1
output_list.append((start, end - 1))
working_set.difference_update(range(start, end))
return output_list
def _print_char_info(chars):
for char in chars:
try:
name = unicode_data.name(char)
except ValueError:
name = '<Unassigned>'
print 'U+%04X %s' % (char, name)
def _write_char_text(chars, filepath, chars_per_line, sep):
def accept_cp(cp):
cat = unicode_data.category(cp)
return cat[0] not in ['M', 'C', 'Z'] or cat == 'Co'
text = [unichr(cp) for cp in chars if accept_cp(cp)]
filename, _ = path.splitext(path.basename(filepath))
m = re.match(r'(.*)-(?:Regular|Bold|Italic|BoldItalic)', filename)
if m:
filename = m.group(1)
filename += '_chars.txt'
print 'writing file: %s' % filename
print '%d characters (of %d)' % (len(text), len(chars))
if chars_per_line > 0:
lines = []
for n in range(0, len(text), chars_per_line):
substr = text[n:n + chars_per_line]
lines.append(sep.join(cp for cp in substr))
text = '\n'.join(lines)
with codecs.open(filename, 'w', 'utf-8') as f:
f.write(text)
def _process_font(filepath, args):
char_set = character_set(filepath)
if args.limit_set:
char_set = char_set & args.limit_set
if not char_set:
print 'limit excludes all chars in %s' % filepath
return
sorted_chars = sorted(char_set)
if args.info:
_print_char_info(sorted_chars)
if args.text:
_write_char_text(sorted_chars, filepath, args.chars_per_line, args.sep)
if args.ranges:
print 'ranges:\n ' + lint_config.write_int_ranges(sorted_chars, True)
def main():
parser = argparse.ArgumentParser()
parser.add_argument('files', help='Files to dump', metavar='file', nargs='+')
parser.add_argument('--ranges',
help='Dump cmap as hex ranges',
action='store_true')
parser.add_argument('--text',
help='Dump cmap as sample text',
action='store_true')
parser.add_argument('--sep',
help='Separator between chars in text, default space',
default=' ')
parser.add_argument('--info',
help='Dump cmap as cp and unicode name, one per line',
action='store_true')
parser.add_argument('--chars_per_line',
help='Format text in lines of at most this '
'many codepoints, 0 to format as a single line',
type=int,
metavar='N',
default=32)
parser.add_argument('--limit',
help='string of hex codepoint ranges limiting cmap '
'to output',
metavar='ranges')
args = parser.parse_args()
if not (args.ranges or args.text or args.info):
args.info = True
if args.limit:
args.limit_set = lint_config.parse_int_ranges(args.limit)
print 'limit to: ' + lint_config.write_int_ranges(args.limit_set)
else:
# make sure it exists so checks don't have to care
args.limit_set = None
for fontpath in args.files:
print 'Font: ' + path.normpath(fontpath)
_process_font(fontpath, args)
if __name__ == '__main__':
main()
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