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
|
#!/usr/bin/env python
# Copyright (C) 2014 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.
"""
Rename the PS name of all fonts in the input directories and copy them to the
output directory.
Usage: build_font.py /path/to/input_fonts1/ /path/to/input_fonts2/ /path/to/output_fonts/
"""
import sys
# fontTools is available at platform/external/fonttools
from fontTools import ttx
import re
import os
from lxml import etree
import shutil
import glob
from multiprocessing import Pool
# global variable
dest_dir = '/tmp'
def main(argv):
if len(argv) < 2:
sys.exit('Usage: build_font.py /path/to/input_fonts/ /path/to/out/dir/')
for directory in argv:
if not os.path.isdir(directory):
sys.exit(directory + ' is not a valid directory')
global dest_dir
dest_dir = argv[-1]
src_dirs = argv[:-1]
cwd = os.getcwd()
os.chdir(dest_dir)
files = glob.glob('*')
for filename in files:
os.remove(filename)
os.chdir(cwd)
input_fonts = list()
for src_dir in src_dirs:
for dirname, dirnames, filenames in os.walk(src_dir):
for filename in filenames:
input_path = os.path.join(dirname, filename)
extension = os.path.splitext(filename)[1].lower()
if (extension == '.ttf'):
input_fonts.append(input_path)
elif (extension == '.xml'):
shutil.copy(input_path, dest_dir)
if '.git' in dirnames:
# don't go into any .git directories.
dirnames.remove('.git')
# Create as many threads as the number of CPUs
pool = Pool(processes=None)
pool.map(convert_font, input_fonts)
class InvalidFontException(Exception):
pass
def convert_font(input_path):
filename = os.path.basename(input_path)
print 'Converting font: ' + filename
# the path to the output file. The file name is the fontfilename.ttx
ttx_path = os.path.join(dest_dir, filename)
ttx_path = ttx_path[:-1] + 'x'
try:
# run ttx to generate an xml file in the output folder which represents all
# its info
ttx_args = ['-q', '-d', dest_dir, input_path]
ttx.main(ttx_args)
# now parse the xml file to change its PS name.
tree = etree.parse(ttx_path)
encoding = tree.docinfo.encoding
root = tree.getroot()
for name in root.iter('name'):
[old_ps_name, version] = get_font_info(name)
if old_ps_name is not None and version is not None:
new_ps_name = old_ps_name + version
update_name(name, new_ps_name)
tree.write(ttx_path, xml_declaration=True, encoding=encoding )
# generate the udpated font now.
ttx_args = ['-q', '-d', dest_dir, ttx_path]
ttx.main(ttx_args)
except InvalidFontException:
# In case of invalid fonts, we exit.
print filename + ' is not a valid font'
raise
except Exception as e:
print 'Error converting font: ' + filename
print e
# Some fonts are too big to be handled by the ttx library.
# Just copy paste them.
shutil.copy(input_path, dest_dir)
try:
# delete the temp ttx file is it exists.
os.remove(ttx_path)
except OSError:
pass
def get_font_info(tag):
ps_name = None
ps_version = None
for namerecord in tag.iter('namerecord'):
if 'nameID' in namerecord.attrib:
# if the tag has nameID=6, it is the postscript name of the font.
# see: http://scripts.sil.org/cms/scripts/page.php?item_id=IWS-Chapter08#3054f18b
if namerecord.attrib['nameID'] == '6':
if ps_name is not None:
if not sanitize(namerecord.text) == ps_name:
raise InvalidFontException('found multiple possibilities of the font name')
else:
ps_name = sanitize(namerecord.text)
# nameID=5 means the font version
if namerecord.attrib['nameID'] == '5':
if ps_version is not None:
if not ps_version == get_version(namerecord.text):
raise InvalidFontException('found multiple possibilities of the font version')
else:
ps_version = get_version(namerecord.text)
return [ps_name, ps_version]
def update_name(tag, name):
for namerecord in tag.iter('namerecord'):
if 'nameID' in namerecord.attrib:
if namerecord.attrib['nameID'] == '6':
namerecord.text = name
def sanitize(string):
return re.sub(r'[^\w-]+', '', string)
def get_version(string):
# The string must begin with 'Version n.nn '
# to extract n.nn, we return the second entry in the split strings.
string = string.strip()
if not string.startswith('Version '):
raise InvalidFontException('mal-formed font version')
return sanitize(string.split()[1])
if __name__ == '__main__':
main(sys.argv[1:])
|
