Mercurial > hg
annotate mercurial/i18n.py @ 36160:9fd8c2a3db5a
narrowspec: move module into core
Having support for parsing the narrow specification in core is
necessary for moving many other parts of narrow to core.
We do still want to harmonize the narrow spec with the sparse
spec. And the format needs to be documented. But this shouldn't
hold up the code moving to core.
Differential Revision: https://phab.mercurial-scm.org/D2201
author | Gregory Szorc <gregory.szorc@gmail.com> |
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date | Mon, 12 Feb 2018 16:21:34 -0800 |
parents | d00ec62d156f |
children | aeaf9c7f7528 |
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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 ( |
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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, pycompat.sysstr('locale')) |
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54 t = gettextmod.translation('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 |