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      gettext.install('entropy', localedir = envdir, unicode = True) 
38      # do not use gettext.gettext because it returns str instead of unicode 
39      _ = _ 
40   
41  except (ImportError, OSError,): 
42 -    def _(raw_string): 
43          """ 
44          Fallback in case gettext is not available, same syntax 
45          for the gettext provided function. 
46   
47          @param raw_string: raw untranslated string 
48          @type raw_string: string 
49          @return: translated string using environment locale 
50              setting (LC_ALL, LANG or LANGUAGE) 
51          @rtype: string 
52          """ 
53          return raw_string 
54   
55 -def change_language(lang): 
56      """ 
57      Change gettext language on the fly. 
58   
59      @param lang: new language string (see `locale -a` for a list of 
60          supported ones) 
61      @type lang: string 
62      """ 
63      global _ 
64      # change in environ 
65      for var in ("LANGUAGE", "LC_ALL", "LANG",): 
66          os.environ[var] = lang 
67      # reinstall gettext 
68      # remove _ from global scope so that gettext will readd it 
69      old_ = _ 
70      del _ 
71      gettext.install('entropy', localedir = envdir, unicode = True) 
72      _ = _ 
73      # redeclare "_" in all loaded modules 
74      for module in sys.modules.values(): 
75          if not hasattr(module, "__dict__"): 
76              continue 
77          t_func = module.__dict__.get("_") 
78          if t_func is not old_: 
79              continue 
80          module._ = _ 
81