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#!/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 directory and copy them to the
output directory.
Usage: build_font.py /path/to/input_fonts/ /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
def main(argv):
if len(argv) != 2:
print "Usage: build_font.py /path/to/input_fonts/ /path/to/out/dir/"
sys.exit(1)
if not os.path.isdir(argv[0]):
print argv[0] + "is not a valid directory"
sys.exit(1)
if not os.path.isdir(argv[1]):
print argv[1] + "is not a valid directory"
sys.exit(1)
cwd = os.getcwd()
os.chdir(argv[1])
files = glob.glob('*')
for filename in files:
os.remove(filename)
os.chdir(cwd)
for filename in os.listdir(argv[0]):
if not os.path.splitext(filename)[1].lower() == ".ttf":
shutil.copy(os.path.join(argv[0], filename), argv[1])
continue
print os.path.join(argv[0], filename)
old_ttf_path = os.path.join(argv[0], filename)
# run ttx to generate an xml file in the output folder which represents all
# its info
ttx_args = ["-d", argv[1], old_ttf_path]
ttx.main(ttx_args)
# the path to the output file. The file name is the fontfilename.ttx
ttx_path = os.path.join(argv[1], filename)
ttx_path = ttx_path[:-1] + "x"
# 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)
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 = ["-d", argv[1], ttx_path]
ttx.main(ttx_args)
# delete the temp ttx file.
os.remove(ttx_path)
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:
sys.exit('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):
sys.exit('found multiple possibilities of the font version')
else:
ps_version = get_version(namerecord.text)
if ps_name is not None and ps_version is not None:
return [ps_name, ps_version]
sys.exit('didn\'t find the font name or 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 "):
sys.exit('mal-formed font version')
return sanitize(string.split()[1])
if __name__ == '__main__':
main(sys.argv[1:])
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