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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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import encoding
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import gettext, sys, os
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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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base = os.path.dirname(module)
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for dir in ('.', '..'):
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localedir = os.path.join(base, dir, 'locale')
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if os.path.isdir(localedir):
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break
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t = gettext.translation('hg', localedir, fallback=True)
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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:
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return message
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paragraphs = 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 t.ugettext(p) or '' 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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return 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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return 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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