207 lines
6.5 KiB
Python
207 lines
6.5 KiB
Python
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import __builtin__
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import os
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import sys
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import ctypes
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import locale
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import gettext
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import paths
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import platform
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import application
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#a few Windows locale constants
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LOCALE_SLANGUAGE=0x2
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LOCALE_SLANGDISPLAYNAME=0x6f
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curLang="en"
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def localeNameToWindowsLCID(localeName):
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"""Retreave the Windows locale identifier (LCID) for the given locale name
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@param localeName: a string of 2letterLanguage_2letterCountry or or just 2letterLanguage
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@type localeName: string
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@returns: a Windows LCID
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@rtype: integer
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"""
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#Windows Vista is able to convert locale names to LCIDs
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func_LocaleNameToLCID=getattr(ctypes.windll.kernel32,'LocaleNameToLCID',None)
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if func_LocaleNameToLCID is not None:
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localeName=localeName.replace('_','-')
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LCID=func_LocaleNameToLCID(unicode(localeName),0)
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else: #Windows doesn't have this functionality, manually search Python's windows_locale dictionary for the LCID
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localeName=locale.normalize(localeName)
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if '.' in localeName:
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localeName=localeName.split('.')[0]
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LCList=[x[0] for x in locale.windows_locale.iteritems() if x[1]==localeName]
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if len(LCList)>0:
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LCID=LCList[0]
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else:
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LCID=0
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return LCID
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def getLanguageDescription(language):
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"""Finds out the description (localized full name) of a given local name"""
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desc=None
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if platform.system() == "Windows":
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LCID=localeNameToWindowsLCID(language)
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if LCID!=0:
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buf=ctypes.create_unicode_buffer(1024)
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if '_' not in language:
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res=ctypes.windll.kernel32.GetLocaleInfoW(LCID,LOCALE_SLANGDISPLAYNAME,buf,1024)
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else:
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res=0
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if res==0:
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res=ctypes.windll.kernel32.GetLocaleInfoW(LCID,LOCALE_SLANGUAGE,buf,1024)
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desc=buf.value
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elif platform.system() == "Linux" or not desc:
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desc={
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"am":pgettext("languageName","Amharic"),
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"an":pgettext("languageName","Aragonese"),
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"es":pgettext("languageName","Spanish"),
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"pt":pgettext("languageName","Portuguese"),
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"ru":pgettext("languageName","Russian"),
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"it":pgettext("languageName","italian"),
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"tr":pgettext("languageName","Turkey"),
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"gl":pgettext("languageName","Galician"),
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"ca":pgettext("languageName","Catala"),
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"eu":pgettext("languageName","Vasque"),
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"pl":pgettext("languageName","polish"),
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"ar":pgettext("languageName","Arabic"),
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"ne":pgettext("languageName","Nepali"),
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"sr":pgettext("languageName","Serbian (Latin)"),
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"ja":pgettext("languageName","Japanese"),
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}.get(language,None)
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return desc
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def getAvailableLanguages():
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"""generates a list of locale names, plus their full localized language and country names.
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@rtype: list of tuples
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"""
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#Make a list of all the locales found in NVDA's locale dir
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l=[x for x in os.listdir(paths.locale_path()) if not x.startswith('.')]
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l=[x for x in l if os.path.isfile(paths.locale_path('%s/LC_MESSAGES/%s.po' % (x, application.short_name)))]
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#Make sure that en (english) is in the list as it may not have any locale files, but is default
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if 'en' not in l:
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l.append('en')
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l.sort()
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#For each locale, ask Windows for its human readable display name
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d=[]
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for i in l:
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desc=getLanguageDescription(i)
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label="%s, %s"%(desc,i) if desc else i
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d.append(label)
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#include a 'user default, windows' language, which just represents the default language for this user account
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l.append("system")
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# Translators: the label for the Windows default NVDA interface language.
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d.append(_("User default"))
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#return a zipped up version of both the lists (a list with tuples of locale,label)
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return zip(l,d)
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def makePgettext(translations):
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"""Obtaina pgettext function for use with a gettext translations instance.
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pgettext is used to support message contexts,
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but Python 2.7's gettext module doesn't support this,
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so NVDA must provide its own implementation.
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"""
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if isinstance(translations, gettext.GNUTranslations):
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def pgettext(context, message):
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message = unicode(message)
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try:
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# Look up the message with its context.
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return translations._catalog[u"%s\x04%s" % (context, message)]
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except KeyError:
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return message
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else:
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def pgettext(context, message):
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return unicode(message)
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return pgettext
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def setLanguage(lang):
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system = platform.system()
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global curLang
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try:
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if lang=="system":
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if system == "Windows":
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windowsLCID=ctypes.windll.kernel32.GetUserDefaultUILanguage()
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localeName=locale.windows_locale[windowsLCID]
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elif system == "Darwin":
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import Foundation
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localeName = Foundation.NSLocale.currentLocale().identifier()
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elif system == "Linux":
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localeName = locale.getdefaultlocale()[0]
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trans=gettext.translation(application.short_name, localedir=paths.locale_path(), languages=[localeName])
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curLang=localeName
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# else:
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# localeName=locale.getdefaultlocale()[0]
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# trans=gettext.translation('twblue', localedir=paths.locale_path(), languages=[localeName])
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# curLang=localeName
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else:
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trans=gettext.translation(application.short_name, localedir=paths.locale_path(), languages=[lang])
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curLang=lang
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localeChanged=False
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#Try setting Python's locale to lang
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# try:
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if system == "Windows":
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locale.setlocale(locale.LC_ALL, langToWindowsLocale(lang))
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localeChanged=True
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else:
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locale.setlocale(locale.LC_ALL, lang)
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localeChanged=True
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# except:
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# pass
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if not localeChanged and '_' in lang:
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#Python couldn'tsupport the language_country locale, just try language.
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try:
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locale.setlocale(locale.LC_ALL, lang.split('_')[0])
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except:
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pass
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#Set the windows locale for this thread (NVDA core) to this locale.
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if system == "Windows":
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LCID=localeNameToWindowsLCID(lang)
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ctypes.windll.kernel32.SetThreadLocale(LCID)
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except IOError:
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trans=gettext.translation(application.short_name, fallback=True)
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curLang="en"
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trans.install(unicode=True)
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# Install our pgettext function.
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# __builtin__.__dict__["pgettext"] = makePgettext(trans)
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def getLanguage():
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return curLang
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def normalizeLanguage(lang):
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"""
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Normalizes a language-dialect string in to a standard form we can deal with.
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Converts any dash to underline, and makes sure that language is lowercase and dialect is upercase.
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"""
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lang=lang.replace('-','_')
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ld=lang.split('_')
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ld[0]=ld[0].lower()
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#Filter out meta languages such as x-western
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if ld[0]=='x':
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return None
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if len(ld)>=2:
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ld[1]=ld[1].upper()
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return "_".join(ld)
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def langToWindowsLocale(lang):
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languages = {"en": "eng",
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"ar": "ara",
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"ca": "cat",
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"de": "deu",
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"es": "esp",
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"fi": "fin",
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"fr": "fre_FRA",
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"gl": "glc",
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"eu": "euq",
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"hu": "hun",
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"hr": "hrv",
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"it": "ita",
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"ja": "jpn",
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"pl": "plk",
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"pt": "ptb",
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"ru": "rus",
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"tr": "trk",
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"sr": "eng",
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}
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return languages[lang]
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