annotate mercurial/i18n.py @ 42093:edbcf5b239f9

config: read configs from directories in lexicographical order Mercurial currently reads the .rc files specified in HGRCPATH (and the system-default paths) in directory order, which is unspecified. My team at work maintains a set of .rc files. So far there has been no overlap between them, so we had not noticed this behavior. However, we would now like to release some common .rc files and then have another one per plaform with platform-specific overrides. It would be nice if we can determine the load order by choosing names carefully. This patch enables that by loading the .rc files in lexicographical order. Before this patch, the added test case would consistently say "30" on my file system (whatever I have -- some Linux FS). Differential Revision: https://phab.mercurial-scm.org/D6193
author Martin von Zweigbergk <martinvonz@google.com>
date Wed, 03 Apr 2019 16:03:41 -0700
parents dd83aafdb64a
children 2372284d9457
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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 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 _languages = None
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27 if (pycompat.iswindows
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28 and 'LANGUAGE' not in encoding.environ
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29 and 'LC_ALL' not in encoding.environ
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30 and 'LC_MESSAGES' not in encoding.environ
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31 and 'LANG' not in encoding.environ):
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32 # Try to detect UI language by "User Interface Language Management" API
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33 # if no locale variables are set. Note that locale.getdefaultlocale()
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34 # uses GetLocaleInfo(), which may be different from UI language.
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35 # (See http://msdn.microsoft.com/en-us/library/dd374098(v=VS.85).aspx )
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36 try:
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37 import ctypes
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38 langid = ctypes.windll.kernel32.GetUserDefaultUILanguage()
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39 _languages = [locale.windows_locale[langid]]
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40 except (ImportError, AttributeError, KeyError):
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41 # ctypes not found or unknown langid
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42 pass
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43
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44 _ugettext = None
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45
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46 def setdatapath(datapath):
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47 datapath = pycompat.fsdecode(datapath)
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48 localedir = os.path.join(datapath, r'locale')
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49 t = gettextmod.translation(r'hg', localedir, _languages, fallback=True)
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50 global _ugettext
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51 try:
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52 _ugettext = t.ugettext
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53 except AttributeError:
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54 _ugettext = t.gettext
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55
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56 _msgcache = {} # encoding: {message: translation}
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57
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58 def gettext(message):
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59 """Translate message.
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60
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61 The message is looked up in the catalog to get a Unicode string,
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62 which is encoded in the local encoding before being returned.
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63
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64 Important: message is restricted to characters in the encoding
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65 given by sys.getdefaultencoding() which is most likely 'ascii'.
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66 """
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67 # If message is None, t.ugettext will return u'None' as the
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68 # translation whereas our callers expect us to return None.
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69 if message is None or not _ugettext:
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70 return message
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71
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72 cache = _msgcache.setdefault(encoding.encoding, {})
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73 if message not in cache:
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74 if type(message) is pycompat.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 # should be ascii, but we have unicode docstrings in test, which
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79 # are converted to utf-8 bytes on Python 3.
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80 paragraphs = [p.decode("utf-8") for p in message.split('\n\n')]
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81 # Be careful not to translate the empty string -- it holds the
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82 # meta data of the .po file.
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83 u = u'\n\n'.join([p and _ugettext(p) or u'' for p in paragraphs])
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84 try:
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85 # encoding.tolocal cannot be used since it will first try to
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86 # decode the Unicode string. Calling u.decode(enc) really
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87 # means u.encode(sys.getdefaultencoding()).decode(enc). Since
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88 # the Python encoding defaults to 'ascii', this fails if the
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89 # translated string use non-ASCII characters.
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90 encodingstr = pycompat.sysstr(encoding.encoding)
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91 cache[message] = u.encode(encodingstr, "replace")
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92 except LookupError:
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93 # An unknown encoding results in a LookupError.
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94 cache[message] = message
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95 return cache[message]
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96
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97 def _plain():
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98 if ('HGPLAIN' not in encoding.environ
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99 and 'HGPLAINEXCEPT' not in encoding.environ):
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100 return False
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101 exceptions = encoding.environ.get('HGPLAINEXCEPT', '').strip().split(',')
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102 return 'i18n' not in exceptions
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103
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104 if _plain():
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105 _ = lambda message: message
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106 else:
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107 _ = gettext