Source Code for Module entropy.i18n

 1  # -*- coding: utf-8 -*- 
 2  """ 
 3   
 4      @author: Fabio Erculiani <lxnay@sabayonlinux.org> 
 5      @contact: lxnay@sabayonlinux.org 
 6      @copyright: Fabio Erculiani 
 7      @license: GPL-2 
 8   
 9      B{Entropy Framework internationalization module} 
10   
11      This module contains Entropy Framework i18n functions and 
12      variables. 
13   
14  """ 
15   
16  import sys 
17  import os 
18  _LOCALE = None 
19  _LOCALE_FULL = os.getenv('LC_ALL') 
20  if _LOCALE_FULL == None: 
21      _LOCALE_FULL = os.getenv('LANG') 
22  if _LOCALE_FULL == None: 
23      _LOCALE_FULL = os.getenv('LANGUAGE') 
24   
25  if _LOCALE_FULL: 
26      _LOCALE = _LOCALE_FULL.split('.')[0] 
27      _LOCALE = _LOCALE.split('_')[0] 
28      _LOCALE = _LOCALE.lower() 
29   
30  try: 
31      import gettext 
32      localedir = "/usr/share/locale" 
33      # support for ENV TEXTDOMAINDIR 
34      envdir = os.getenv('TEXTDOMAINDIR') 
35      if envdir is not None: 
36          localedir = envdir 
37      kwargs = {"localedir": localedir,} 
38      if sys.hexversion < 0x3000000: 
39          kwargs['unicode'] = True 
40      gettext.install('entropy', **kwargs) 
41      # do not use gettext.gettext because it returns str instead of unicode 
42      _ = _ 
43   
44  except (ImportError, OSError,): 
45 -    def _(raw_string): 
46          """ 
47          Fallback in case gettext is not available, same syntax 
48          for the gettext provided function. 
49   
50          @param raw_string: raw untranslated string 
51          @type raw_string: string 
52          @return: translated string using environment locale 
53              setting (LC_ALL, LANG or LANGUAGE) 
54          @rtype: string 
55          """ 
56          return raw_string 
57   
58 -def change_language(lang): 
59      """ 
60      Change gettext language on the fly. 
61   
62      @param lang: new language string (see `locale -a` for a list of 
63          supported ones) 
64      @type lang: string 
65      """ 
66      global _ 
67      # change in environ 
68      for var in ("LANGUAGE", "LC_ALL", "LANG",): 
69          os.environ[var] = lang 
70      # reinstall gettext 
71      # remove _ from global scope so that gettext will readd it 
72      old_ = _ 
73      del _ 
74      kwargs = {"localedir": localedir,} 
75      if sys.hexversion < 0x3000000: 
76          kwargs['unicode'] = True 
77      gettext.install('entropy', **kwargs) 
78      _ = _ 
79      # redeclare "_" in all loaded modules 
80      for module in list(sys.modules.values()): 
81          if not hasattr(module, "__dict__"): 
82              continue 
83          t_func = module.__dict__.get("_") 
84          if t_func is not old_: 
85              continue 
86          module._ = _ 
87