Mercurial > hg
annotate mercurial/i18n.py @ 37279:26f6fc179e62
templater: define interface for objects requiring unwrapvalue()
unwrapvalue() is changed to not return a lazy bytes generator for "wrapped"
types because I want to define the tovalue() interface as such. It's a baby
step to unify unwrapvalue() and _unwrapvalue().
author | Yuya Nishihara <yuya@tcha.org> |
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date | Sat, 17 Mar 2018 21:03:16 +0900 |
parents | 5bc7ff103081 |
children | 79dd61a4554f |
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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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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 ( |
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16 encoding, |
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17 pycompat, |
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18 ) |
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19 |
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20 # modelled after templater.templatepath: |
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21 if getattr(sys, 'frozen', None) is not None: |
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22 module = pycompat.sysexecutable |
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23 else: |
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24 module = pycompat.fsencode(__file__) |
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25 |
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26 try: |
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27 unicode |
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28 except NameError: |
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29 unicode = str |
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30 |
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31 _languages = None |
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33 and 'LANGUAGE' not in encoding.environ |
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34 and 'LC_ALL' not in encoding.environ |
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35 and 'LC_MESSAGES' not in encoding.environ |
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36 and 'LANG' not in encoding.environ): |
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37 # Try to detect UI language by "User Interface Language Management" API |
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38 # if no locale variables are set. Note that locale.getdefaultlocale() |
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39 # uses GetLocaleInfo(), which may be different from UI language. |
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40 # (See http://msdn.microsoft.com/en-us/library/dd374098(v=VS.85).aspx ) |
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41 try: |
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42 import ctypes |
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43 langid = ctypes.windll.kernel32.GetUserDefaultUILanguage() |
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44 _languages = [locale.windows_locale[langid]] |
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45 except (ImportError, AttributeError, KeyError): |
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46 # ctypes not found or unknown langid |
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47 pass |
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48 |
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49 _ugettext = None |
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50 |
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51 def setdatapath(datapath): |
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52 datapath = pycompat.fsdecode(datapath) |
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53 localedir = os.path.join(datapath, r'locale') |
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54 t = gettextmod.translation(r'hg', localedir, _languages, fallback=True) |
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55 global _ugettext |
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56 try: |
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57 _ugettext = t.ugettext |
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58 except AttributeError: |
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59 _ugettext = t.gettext |
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60 |
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61 _msgcache = {} # encoding: {message: translation} |
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62 |
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63 def gettext(message): |
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64 """Translate message. |
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65 |
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66 The message is looked up in the catalog to get a Unicode string, |
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67 which is encoded in the local encoding before being returned. |
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68 |
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69 Important: message is restricted to characters in the encoding |
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70 given by sys.getdefaultencoding() which is most likely 'ascii'. |
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71 """ |
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72 # If message is None, t.ugettext will return u'None' as the |
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73 # translation whereas our callers expect us to return None. |
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74 if message is None or not _ugettext: |
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75 return message |
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76 |
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77 cache = _msgcache.setdefault(encoding.encoding, {}) |
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78 if message not in cache: |
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79 if type(message) is unicode: |
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80 # goofy unicode docstrings in test |
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81 paragraphs = message.split(u'\n\n') |
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82 else: |
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83 paragraphs = [p.decode("ascii") for p in message.split('\n\n')] |
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84 # Be careful not to translate the empty string -- it holds the |
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85 # meta data of the .po file. |
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86 u = u'\n\n'.join([p and _ugettext(p) or u'' for p in paragraphs]) |
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87 try: |
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88 # encoding.tolocal cannot be used since it will first try to |
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89 # decode the Unicode string. Calling u.decode(enc) really |
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90 # means u.encode(sys.getdefaultencoding()).decode(enc). Since |
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91 # the Python encoding defaults to 'ascii', this fails if the |
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92 # translated string use non-ASCII characters. |
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93 encodingstr = pycompat.sysstr(encoding.encoding) |
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94 cache[message] = u.encode(encodingstr, "replace") |
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95 except LookupError: |
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96 # An unknown encoding results in a LookupError. |
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97 cache[message] = message |
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98 return cache[message] |
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99 |
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100 def _plain(): |
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101 if ('HGPLAIN' not in encoding.environ |
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102 and 'HGPLAINEXCEPT' not in encoding.environ): |
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103 return False |
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104 exceptions = encoding.environ.get('HGPLAINEXCEPT', '').strip().split(',') |
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105 return 'i18n' not in exceptions |
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106 |
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107 if _plain(): |
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108 _ = lambda message: message |
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109 else: |
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110 _ = gettext |