Mercurial > hg
annotate mercurial/i18n.py @ 29440:009cc6c89d0f
chg: silence warning of unused parameter 'sig'
author | Yuya Nishihara <yuya@tcha.org> |
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date | Tue, 28 Jun 2016 22:39:06 +0900 |
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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 from __future__ import absolute_import |
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9 |
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10 import gettext as gettextmod |
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11 import locale |
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12 import os |
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13 import sys |
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14 |
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15 from . import encoding |
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16 |
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17 # modelled after templater.templatepath: |
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18 if getattr(sys, 'frozen', None) is not None: |
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19 module = sys.executable |
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20 else: |
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21 module = __file__ |
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22 |
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23 try: |
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24 unicode |
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25 except NameError: |
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26 unicode = str |
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27 |
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28 _languages = None |
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29 if (os.name == 'nt' |
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30 and 'LANGUAGE' not in os.environ |
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31 and 'LC_ALL' not in os.environ |
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32 and 'LC_MESSAGES' not in os.environ |
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33 and 'LANG' not in os.environ): |
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34 # Try to detect UI language by "User Interface Language Management" API |
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35 # if no locale variables are set. Note that locale.getdefaultlocale() |
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36 # uses GetLocaleInfo(), which may be different from UI language. |
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37 # (See http://msdn.microsoft.com/en-us/library/dd374098(v=VS.85).aspx ) |
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38 try: |
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39 import ctypes |
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40 langid = ctypes.windll.kernel32.GetUserDefaultUILanguage() |
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41 _languages = [locale.windows_locale[langid]] |
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42 except (ImportError, AttributeError, KeyError): |
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43 # ctypes not found or unknown langid |
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44 pass |
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45 |
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46 _ugettext = None |
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47 |
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48 def setdatapath(datapath): |
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49 localedir = os.path.join(datapath, 'locale') |
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50 t = gettextmod.translation('hg', localedir, _languages, fallback=True) |
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51 global _ugettext |
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52 try: |
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53 _ugettext = t.ugettext |
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54 except AttributeError: |
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55 _ugettext = t.gettext |
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56 |
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57 _msgcache = {} |
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58 |
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59 def gettext(message): |
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60 """Translate message. |
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61 |
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62 The message is looked up in the catalog to get a Unicode string, |
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63 which is encoded in the local encoding before being returned. |
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64 |
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65 Important: message is restricted to characters in the encoding |
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66 given by sys.getdefaultencoding() which is most likely 'ascii'. |
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67 """ |
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68 # If message is None, t.ugettext will return u'None' as the |
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69 # translation whereas our callers expect us to return None. |
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70 if message is None or not _ugettext: |
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71 return message |
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72 |
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73 if message not in _msgcache: |
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74 if type(message) is unicode: |
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75 # goofy unicode docstrings in test |
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76 paragraphs = message.split(u'\n\n') |
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77 else: |
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78 paragraphs = [p.decode("ascii") for p in message.split('\n\n')] |
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79 # Be careful not to translate the empty string -- it holds the |
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80 # meta data of the .po file. |
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81 u = u'\n\n'.join([p and _ugettext(p) or u'' for p in paragraphs]) |
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82 try: |
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83 # encoding.tolocal cannot be used since it will first try to |
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84 # decode the Unicode string. Calling u.decode(enc) really |
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85 # means u.encode(sys.getdefaultencoding()).decode(enc). Since |
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86 # the Python encoding defaults to 'ascii', this fails if the |
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87 # translated string use non-ASCII characters. |
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88 _msgcache[message] = u.encode(encoding.encoding, "replace") |
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89 except LookupError: |
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90 # An unknown encoding results in a LookupError. |
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91 _msgcache[message] = message |
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92 return _msgcache[message] |
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93 |
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94 def _plain(): |
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95 if 'HGPLAIN' not in os.environ and 'HGPLAINEXCEPT' not in os.environ: |
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96 return False |
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97 exceptions = os.environ.get('HGPLAINEXCEPT', '').strip().split(',') |
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98 return 'i18n' not in exceptions |
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99 |
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100 if _plain(): |
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101 _ = lambda message: message |
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102 else: |
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103 _ = gettext |