mercurial/i18n.py
author Martin Geisler <mg@aragost.com>
Fri, 25 Feb 2011 11:39:19 +0100
branchstable
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child 13849 9f97de157aad
permissions -rw-r--r--
commands: update year to 2011 in version string
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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 hasattr(sys, 'frozen'):
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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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if 'HGPLAIN' in os.environ:
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    _ = lambda message: message
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else:
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    _ = gettext
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