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# i18n.py - internationalization support for mercurial
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#
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# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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from __future__ import absolute_import
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import gettext as gettextmod
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import locale
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import os
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import sys
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from . import encoding
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# modelled after templater.templatepath:
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if getattr(sys, 'frozen', None) is not None:
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module = sys.executable
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else:
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module = __file__
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try:
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unicode
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except NameError:
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unicode = str
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_languages = None
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if (os.name == 'nt'
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and 'LANGUAGE' not in os.environ
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and 'LC_ALL' not in os.environ
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and 'LC_MESSAGES' not in os.environ
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and 'LANG' not in os.environ):
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# Try to detect UI language by "User Interface Language Management" API
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# if no locale variables are set. Note that locale.getdefaultlocale()
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# uses GetLocaleInfo(), which may be different from UI language.
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# (See http://msdn.microsoft.com/en-us/library/dd374098(v=VS.85).aspx )
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try:
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import ctypes
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langid = ctypes.windll.kernel32.GetUserDefaultUILanguage()
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_languages = [locale.windows_locale[langid]]
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except (ImportError, AttributeError, KeyError):
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# ctypes not found or unknown langid
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pass
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_ugettext = None
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def setdatapath(datapath):
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localedir = os.path.join(datapath, 'locale')
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t = gettextmod.translation('hg', localedir, _languages, fallback=True)
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global _ugettext
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try:
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_ugettext = t.ugettext
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except AttributeError:
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_ugettext = t.gettext
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_msgcache = {}
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def gettext(message):
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"""Translate message.
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The message is looked up in the catalog to get a Unicode string,
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which is encoded in the local encoding before being returned.
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Important: message is restricted to characters in the encoding
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given by sys.getdefaultencoding() which is most likely 'ascii'.
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"""
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# If message is None, t.ugettext will return u'None' as the
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# translation whereas our callers expect us to return None.
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if message is None or not _ugettext:
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return message
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if message not in _msgcache:
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if type(message) is unicode:
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# goofy unicode docstrings in test
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paragraphs = message.split(u'\n\n')
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else:
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paragraphs = [p.decode("ascii") for p in message.split('\n\n')]
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# Be careful not to translate the empty string -- it holds the
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# meta data of the .po file.
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u = u'\n\n'.join([p and _ugettext(p) or u'' for p in paragraphs])
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try:
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# encoding.tolocal cannot be used since it will first try to
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# decode the Unicode string. Calling u.decode(enc) really
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# means u.encode(sys.getdefaultencoding()).decode(enc). Since
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# the Python encoding defaults to 'ascii', this fails if the
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# translated string use non-ASCII characters.
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_msgcache[message] = u.encode(encoding.encoding, "replace")
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except LookupError:
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# An unknown encoding results in a LookupError.
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_msgcache[message] = message
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return _msgcache[message]
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def _plain():
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if 'HGPLAIN' not in os.environ and 'HGPLAINEXCEPT' not in os.environ:
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return False
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exceptions = os.environ.get('HGPLAINEXCEPT', '').strip().split(',')
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return 'i18n' not in exceptions
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if _plain():
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_ = lambda message: message
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else:
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_ = gettext
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