annotate mercurial/i18n.py @ 13944:bc32bb0e909f

util: new function checkfilename checkfilename checks for restrictions on filenames imposed by Mercurial itself, irrespective of on what platform it is run.
author Adrian Buehlmann <adrian@cadifra.com>
date Fri, 15 Apr 2011 16:15:30 +0200
parents 9f97de157aad
children b64538363dbe
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1 # i18n.py - internationalization support for mercurial
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2 #
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3 # Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
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4 #
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5 # This software may be used and distributed according to the terms of the
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6 # GNU General Public License version 2 or any later version.
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7
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8 import encoding
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9 import gettext, sys, os
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10
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11 # modelled after templater.templatepath:
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12 if hasattr(sys, 'frozen'):
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13 module = sys.executable
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14 else:
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15 module = __file__
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16
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17 base = os.path.dirname(module)
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18 for dir in ('.', '..'):
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19 localedir = os.path.join(base, dir, 'locale')
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20 if os.path.isdir(localedir):
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21 break
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22
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23 t = gettext.translation('hg', localedir, fallback=True)
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24
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25 def gettext(message):
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26 """Translate message.
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27
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28 The message is looked up in the catalog to get a Unicode string,
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29 which is encoded in the local encoding before being returned.
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30
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31 Important: message is restricted to characters in the encoding
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32 given by sys.getdefaultencoding() which is most likely 'ascii'.
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33 """
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34 # If message is None, t.ugettext will return u'None' as the
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35 # translation whereas our callers expect us to return None.
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36 if message is None:
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37 return message
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38
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39 paragraphs = message.split('\n\n')
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40 # Be careful not to translate the empty string -- it holds the
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41 # meta data of the .po file.
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42 u = u'\n\n'.join([p and t.ugettext(p) or '' for p in paragraphs])
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43 try:
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44 # encoding.tolocal cannot be used since it will first try to
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45 # decode the Unicode string. Calling u.decode(enc) really
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46 # means u.encode(sys.getdefaultencoding()).decode(enc). Since
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47 # the Python encoding defaults to 'ascii', this fails if the
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48 # translated string use non-ASCII characters.
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49 return u.encode(encoding.encoding, "replace")
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50 except LookupError:
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51 # An unknown encoding results in a LookupError.
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52 return message
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53
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54 def _plain():
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55 if 'HGPLAIN' not in os.environ and 'HGPLAINEXCEPT' not in os.environ:
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56 return False
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57 exceptions = os.environ.get('HGPLAINEXCEPT', '').strip().split(',')
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58 return 'i18n' not in exceptions
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60 if _plain():
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61 _ = lambda message: message
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62 else:
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63 _ = gettext
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64