author | Matt Mackall <mpm@selenic.com> |
Fri, 30 Sep 2011 14:12:48 -0500 | |
changeset 15178 | 04e5449e25dc |
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permissions | -rw-r--r-- |
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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 |