Mercurial > hg
annotate mercurial/i18n.py @ 20835:0e8417131a29
util: add the code path to "cachefunc()" for the function taking no arguments
Before this patch, "util.cachefunc()" caches the value returned by the
specified function into dictionary "cache", even if the specified
function takes no arguments.
In such case, "cache" has at most one entry, and distinction between
entries in "cache" is meaningless.
This patch adds the code path to "cachefunc()" for the function taking
no arguments for efficiency: to store only one cached value, using
list "cache" is a little faster than using dictionary "cache".
author | FUJIWARA Katsunori <foozy@lares.dti.ne.jp> |
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date | Sat, 15 Feb 2014 19:52:26 +0900 |
parents | b64538363dbe |
children | 2d47d81c79fb |
rev | line source |
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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 |
10263 | 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 getattr(sys, 'frozen', None) is not None: |
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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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59 |
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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 |