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/
usr/
lib/
python2.7/
dist-packages/
LanguageSelector/
- drwxr-xr-x
|
Viewing file:  FontConfig.py (5.39 KB) -rw-r--r--Select action/file-type:  ( +) |  ( +) |  ( +) | Code ( +) | Session ( +) |  ( +) | SDB ( +) |  ( +) |  ( +) |  ( +) |  ( +) |  ( +) |
# FontConfig.py (c) 2006 Canonical, released under the GPL
#
# This file implements the fontconfig hack
#
# The problem is that different languages have different needs for
# fontconfig preferences. While it would be really good to have a single
# config file it seems to be not feasible right now for practial purposes
# (see https://wiki.ubuntu.com/DapperL10nSprint for more information)
#
# so this file implements a hack to add prefered languages based on the
# configuration we got from the CJK community
import glob
import string
import os.path
from LocaleInfo import LocaleInfo
import macros
from utils import language2locale
class ExceptionMultipleConfigurations(Exception):
" error when multiple languages are symlinked "
pass
class ExceptionUnconfigured(Exception):
" error if no configuration is set "
pass
class ExceptionNoConfigForLocale(Exception):
" error if there is no config for the given locale "
pass
class FontConfigHack(object):
""" abstract the fontconfig hack """
def __init__(self,
datadir="/usr/share/language-selector/",
globalConfDir="/etc/fonts"):
self.datadir="%s/fontconfig" % datadir
self._datadir = datadir
self.globalConfDir=globalConfDir
self.li = LocaleInfo("languagelist", datadir)
def _getLocaleCountryFromFileName(self, name):
"""
internal helper to extracr from our fontconfig filenames
of the form 69-language-selector-zh-tw.conf the locale
and country
returns string of the form locale_COUTNRY (e.g. zh_TW)
"""
fname = os.path.splitext(os.path.basename(name))[0]
(head, ll, cc) = string.rsplit(fname, "-", 2)
return "%s_%s" % (ll, cc.upper())
def getAvailableConfigs(self):
""" get the configurations we have as a list of languages
(returns a list of ['zh_CN','zh_TW'])
"""
res = []
pattern = "%s/conf.avail/69-language-selector-*" % self.globalConfDir
for name in glob.glob(pattern):
res.append(self._getLocaleCountryFromFileName(name))
return res
def getCurrentConfig(self):
""" returns the current language configuration as a string (e.g. zh_CN)
if the configfile is not a symlink it raises a
ExceptionNotSymlink exception
if the file dosn't exists raise a
ExceptionUnconfigured exception
"""
pattern = "%s/conf.d/69-language-selector-*" % self.globalConfDir
current_config = glob.glob(pattern)
if len(current_config) == 0:
raise ExceptionUnconfigured()
if len(current_config) > 1:
raise ExceptionMultipleConfigurations()
return self._getLocaleCountryFromFileName(current_config[0])
def removeConfig(self):
""" removes the current fontconfig-voodoo configuration
and do some sanity checking
"""
pattern = "%s/conf.d/*-language-selector-*" % self.globalConfDir
for f in glob.glob(pattern):
if os.path.exists(f):
os.unlink(f)
def setConfig(self, locale):
""" set the configuration for 'locale'. if locale can't be
found a NoConfigurationForLocale exception it thrown
"""
macr = macros.LangpackMacros(self._datadir, locale)
locale = macr["LOCALE"]
# check if we have a config
if locale not in self.getAvailableConfigs():
raise ExceptionNoConfigForLocale()
# remove old symlink
self.removeConfig()
# do the symlinks, link from /etc/fonts/conf.avail in /etc/fonts/conf.d
basedir = "%s/conf.avail/" % self.globalConfDir
for pattern in ["*-language-selector-%s-%s.conf" % (macr["LCODE"], macr["CCODE"].lower()),
"*-language-selector-%s.conf" % macr["LCODE"],
]:
for f in glob.glob(os.path.join(basedir,pattern)):
fname = os.path.basename(f)
from_link = os.path.join(self.globalConfDir,"conf.avail",fname)
to_link = os.path.join(self.globalConfDir, "conf.d", fname)
os.symlink(from_link, to_link)
return True
def setConfigBasedOnLocale(self):
""" set the configuration based on the locale in LocaleInfo. If
no configuration is found the fontconfig config is set to
'none'
Can throw a exception
"""
lang = self.li.getUserDefaultLanguage()[1]
if len(lang) == 0:
lang = self.li.getSystemDefaultLanguage()[1]
locale = language2locale(lang)
self.setConfig(locale)
if __name__ == "__main__":
fc = FontConfigHack()
# available
print "available: ", fc.getAvailableConfigs()
# current
try:
config = fc.getCurrentConfig()
except ExceptionUnconfigured:
print "unconfigured"
# set config
print "set config: ", fc.setConfig("zh_CN")
print "current: ", fc.getCurrentConfig()
# auto mode
try:
print "run auto mode: ", fc.setConfigBasedOnLocale()
except ExceptionNoConfigForLocale:
print "no config for this locale"
# remove
print "removeConfig()"
fc.removeConfig()
try:
config = fc.getCurrentConfig()
print "ERROR: have config after calling removeConfig()"
except ExceptionUnconfigured:
print "unconfigured (as expected)"
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