annotate mercurial/i18n.py @ 47902:4cade5e944c2

dirstatemap: use the default code to handle "removed" case This one is very easy. Differential Revision: https://phab.mercurial-scm.org/D11327
author Pierre-Yves David <pierre-yves.david@octobus.net>
date Fri, 16 Jul 2021 17:23:40 +0200
parents d4ba4d51f85f
children 6000f5b25c9b
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1 # i18n.py - internationalization support for mercurial
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2 #
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3 # Copyright 2005, 2006 Olivia Mackall <olivia@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 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 .pycompat import getattr
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16 from .utils import resourceutil
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17 from . import (
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18 encoding,
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19 pycompat,
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20 )
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21
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22 if pycompat.TYPE_CHECKING:
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23 from typing import (
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24 Callable,
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25 List,
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26 )
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27
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28
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29 # modelled after templater.templatepath:
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30 if getattr(sys, 'frozen', None) is not None:
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31 module = pycompat.sysexecutable
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32 else:
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33 module = pycompat.fsencode(__file__)
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34
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35 _languages = None
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36 if (
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37 pycompat.iswindows
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38 and b'LANGUAGE' not in encoding.environ
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39 and b'LC_ALL' not in encoding.environ
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40 and b'LC_MESSAGES' not in encoding.environ
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41 and b'LANG' not in encoding.environ
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42 ):
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43 # Try to detect UI language by "User Interface Language Management" API
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44 # if no locale variables are set. Note that locale.getdefaultlocale()
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45 # uses GetLocaleInfo(), which may be different from UI language.
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46 # (See http://msdn.microsoft.com/en-us/library/dd374098(v=VS.85).aspx )
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47 try:
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48 import ctypes
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49
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50 # pytype: disable=module-attr
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51 langid = ctypes.windll.kernel32.GetUserDefaultUILanguage()
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52 # pytype: enable=module-attr
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53
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54 _languages = [locale.windows_locale[langid]]
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55 except (ImportError, AttributeError, KeyError):
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56 # ctypes not found or unknown langid
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57 pass
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58
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59
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60 datapath = pycompat.fsdecode(resourceutil.datapath)
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61 localedir = os.path.join(datapath, 'locale')
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62 t = gettextmod.translation('hg', localedir, _languages, fallback=True)
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63 try:
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64 _ugettext = t.ugettext # pytype: disable=attribute-error
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65 except AttributeError:
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66 _ugettext = t.gettext
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67
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68
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69 _msgcache = {} # encoding: {message: translation}
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70
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71
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72 def gettext(message):
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73 # type: (bytes) -> bytes
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74 """Translate message.
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75
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76 The message is looked up in the catalog to get a Unicode string,
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77 which is encoded in the local encoding before being returned.
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78
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79 Important: message is restricted to characters in the encoding
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80 given by sys.getdefaultencoding() which is most likely 'ascii'.
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81 """
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82 # If message is None, t.ugettext will return u'None' as the
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83 # translation whereas our callers expect us to return None.
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84 if message is None or not _ugettext:
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85 return message
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86
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87 cache = _msgcache.setdefault(encoding.encoding, {})
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88 if message not in cache:
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89 if type(message) is pycompat.unicode:
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90 # goofy unicode docstrings in test
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91 paragraphs = message.split(u'\n\n') # type: List[pycompat.unicode]
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92 else:
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93 # should be ascii, but we have unicode docstrings in test, which
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94 # are converted to utf-8 bytes on Python 3.
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95 paragraphs = [p.decode("utf-8") for p in message.split(b'\n\n')]
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96 # Be careful not to translate the empty string -- it holds the
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97 # meta data of the .po file.
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98 u = u'\n\n'.join([p and _ugettext(p) or u'' for p in paragraphs])
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99 try:
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100 # encoding.tolocal cannot be used since it will first try to
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101 # decode the Unicode string. Calling u.decode(enc) really
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102 # means u.encode(sys.getdefaultencoding()).decode(enc). Since
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103 # the Python encoding defaults to 'ascii', this fails if the
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104 # translated string use non-ASCII characters.
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105 encodingstr = pycompat.sysstr(encoding.encoding)
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106 cache[message] = u.encode(encodingstr, "replace")
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107 except LookupError:
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108 # An unknown encoding results in a LookupError.
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109 cache[message] = message
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110 return cache[message]
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111
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112
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113 def _plain():
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114 if (
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115 b'HGPLAIN' not in encoding.environ
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116 and b'HGPLAINEXCEPT' not in encoding.environ
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117 ):
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118 return False
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119 exceptions = encoding.environ.get(b'HGPLAINEXCEPT', b'').strip().split(b',')
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120 return b'i18n' not in exceptions
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121
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122
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123 if _plain():
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124 _ = lambda message: message # type: Callable[[bytes], bytes]
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125 else:
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126 _ = gettext