Current File : //usr/lib/python3/dist-packages/LanguageSelector/LangCache.py
from __future__ import print_function
import warnings
warnings.filterwarnings("ignore", "apt API not stable yet", FutureWarning)
import apt
import language_support_pkgs
class LanguagePackageStatus(object):
def __init__(self, languageCode, pkg_template):
self.languageCode = languageCode
self.pkgname_template = pkg_template
self.available = False
self.installed = False
self.doChange = False
def __str__(self):
return 'LanguagePackageStatus(langcode: %s, pkgname %s, available: %s, installed: %s, doChange: %s' % (
self.languageCode, self.pkgname_template, str(self.available),
str(self.installed), str(self.doChange))
# the language-support information
class LanguageInformation(object):
def __init__(self, cache, languageCode=None, language=None):
#FIXME:
#needs a new structure:
#languagePkgList[LANGCODE][tr|fn|in|wa]=[packages available for that language in that category]
#@property for each category
#@property for each LANGCODE
self.languageCode = languageCode
self.language = language
# langPack/support status
self.languagePkgList = {}
self.languagePkgList["languagePack"] = LanguagePackageStatus(languageCode, "language-pack-%s")
for langpkg_status in self.languagePkgList.values():
pkgname = langpkg_status.pkgname_template % languageCode
langpkg_status.available = pkgname in cache
if langpkg_status.available:
langpkg_status.installed = cache[pkgname].is_installed
@property
def inconsistent(self):
" returns True if only parts of the language support packages are installed "
if (not self.notInstalled and not self.fullInstalled) : return True
return False
@property
def fullInstalled(self):
" return True if all of the available language support packages are installed "
for pkg in self.languagePkgList.values() :
if not pkg.available : continue
if not ((pkg.installed and not pkg.doChange) or (not pkg.installed and pkg.doChange)) : return False
return True
@property
def notInstalled(self):
" return True if none of the available language support packages are installed "
for pkg in self.languagePkgList.values() :
if not pkg.available : continue
if not ((not pkg.installed and not pkg.doChange) or (pkg.installed and pkg.doChange)) : return False
return True
@property
def changes(self):
" returns true if anything in the state of the language packs/support changes "
for pkg in self.languagePkgList.values() :
if (pkg.doChange) : return True
return False
def __str__(self):
return "%s (%s)" % (self.language, self.languageCode)
# the pkgcache stuff
class ExceptionPkgCacheBroken(Exception):
pass
class LanguageSelectorPkgCache(apt.Cache):
def __init__(self, localeinfo, progress):
apt.Cache.__init__(self, progress)
if self._depcache.broken_count > 0:
raise ExceptionPkgCacheBroken()
self._localeinfo = localeinfo
self.lang_support = language_support_pkgs.LanguageSupport(self)
@property
def havePackageLists(self):
" verify that a network package lists exists "
for metaindex in self._list.list:
for indexfile in metaindex.index_files:
if indexfile.archive_uri("").startswith("cdrom:"):
continue
if indexfile.archive_uri("").startswith("http://security.ubuntu.com"):
continue
if indexfile.label != "Debian Package Index":
continue
if indexfile.exists and indexfile.has_packages:
return True
return False
def clear(self):
""" clear the selections """
self._depcache.init()
def getChangesList(self):
to_inst = []
to_rm = []
for pkg in self.get_changes():
if pkg.marked_install or pkg.marked_upgrade:
to_inst.append(pkg.name)
if pkg.marked_delete:
to_rm.append(pkg.name)
return (to_inst,to_rm)
def tryChangeDetails(self, li):
" commit changed status of list items"""
# we iterate over items of type LanguagePackageStatus
for (key, item) in li.languagePkgList.items():
if item.doChange:
pkgs = self.lang_support.by_locale(li.languageCode, installed=item.installed)
#print("XXX pkg list for lang %s, installed: %s" % (item.languageCode, str(item.installed)))
try:
if item.installed:
# We are selective when deleting language support packages to
# prevent removal of packages that are not language specific.
for pkgname in pkgs:
if pkgname.startswith('language-pack-') or \
pkgname.endswith('-' + li.languageCode):
self[pkgname].mark_delete()
else:
for pkgname in pkgs:
self[pkgname].mark_install()
except SystemError:
raise ExceptionPkgCacheBroken()
def getLanguageInformation(self):
""" returns a list with language packs/support packages """
res = []
for (code, lang) in self._localeinfo._lang.items():
if code == 'zh':
continue
li = LanguageInformation(self, code, lang)
if [s for s in li.languagePkgList.values() if s.available]:
res.append(li)
return res
if __name__ == "__main__":
from LocaleInfo import LocaleInfo
datadir = "/usr/share/language-selector"
li = LocaleInfo("languagelist", datadir)
lc = LanguageSelectorPkgCache(li,apt.progress.OpProgress())
print("available language information")
print(", ".join(["%s" %x for x in lc.getLanguageInformation()]))
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