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annotate roundup/cgi/TranslationService.py @ 2807:aa0316a1b2aa

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get_translation: removed 'domain' argument, added 'tracker_home' argument
author Alexander Smishlajev <a1s@users.sourceforge.net>
date Sat, 23 Oct 2004 14:04:23 +0000
parents 297dedb7226e
children beaf7ea86e5e
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1 # TranslationService for Roundup templates
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2 #
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3 # This module is free software, you may redistribute it
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4 # and/or modify under the same terms as Python.
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5 #
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6 # This module provides National Language Support
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7 # for Roundup templating - much like roundup.i18n
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8 # module for Roundup command line interface.
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9 # The only difference is that translator objects
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10 # returned by get_translation() have one additional
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11 # method which is used by TAL engines:
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12 #
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13 # translate(domain, msgid, mapping, context, target_language, default)
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14 #
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15
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16 __version__ = "$Revision: 1.2 $"[11:-2]
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17 __date__ = "$Date: 2004-10-23 14:04:23 $"[7:-2]
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18
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19 from roundup import i18n
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20 from roundup.cgi.PageTemplates import Expressions, PathIterator, TALES
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21 from roundup.cgi.TAL import TALInterpreter
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22
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23 ### Translation classes
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24
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25 class TranslationServiceMixin:
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26
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27 OUTPUT_ENCODING = "utf-8"
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28
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29 def translate(self, domain, msgid, mapping=None,
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30 context=None, target_language=None, default=None
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31 ):
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32 _msg = self.gettext(msgid)
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33 #print ("TRANSLATE", msgid, _msg, mapping, context)
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34 _msg = TALInterpreter.interpolate(_msg, mapping)
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35 return _msg
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36
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37 def gettext(self, msgid):
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38 return self.ugettext(msgid).encode(self.OUTPUT_ENCODING)
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39
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40 def ngettext(self, singular, plural, number):
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41 return self.ungettext(singular, plural, number).encode(
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42 self.OUTPUT_ENCODING)
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43
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44 class TranslationService(TranslationServiceMixin, i18n.RoundupTranslations):
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45 pass
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46
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47 class NullTranslationService(TranslationServiceMixin,
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48 i18n.RoundupNullTranslations
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49 ):
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50 pass
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51
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52 ### TAL patching
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53 #
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54 # Template Attribute Language (TAL) uses only global translation service,
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55 # which is not thread-safe. We will use context variable 'i18n'
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56 # to access request-dependent transalation service (with domain
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57 # and target language set during initializations of the roundup
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58 # client interface.
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59 #
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60
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61 class Context(TALES.Context):
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62
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63 def __init__(self, compiler, contexts):
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64 TALES.Context.__init__(self, compiler, contexts)
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65 if not self.contexts.get('i18n', None):
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66 # if the context contains no TranslationService,
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67 # create default one
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68 self.contexts['i18n'] = get_translation()
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69 self.i18n = self.contexts['i18n']
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70
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71 def translate(self, domain, msgid, mapping=None,
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72 context=None, target_language=None, default=None):
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73 if context is None:
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74 context = self.contexts.get('here')
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75 return self.i18n.translate(domain, msgid,
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76 mapping=mapping, context=context, default=default,
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77 target_language=target_language)
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78
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79 class Engine(TALES.Engine):
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80
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81 def getContext(self, contexts=None, **kwcontexts):
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82 if contexts is not None:
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83 if kwcontexts:
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84 kwcontexts.update(contexts)
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85 else:
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86 kwcontexts = contexts
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87 return Context(self, kwcontexts)
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88
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89 # patching TAL like this is a dirty hack,
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90 # but i see no other way to specify different Context class
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91 Expressions._engine = Engine(PathIterator.Iterator)
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92 Expressions.installHandlers(Expressions._engine)
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93
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94 ### main API function
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95
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96 def get_translation(language=None, tracker_home=None,
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97 translation_class=TranslationService,
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98 null_translation_class=NullTranslationService
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99 ):
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100 """Return Translation object for given language and domain
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101
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102 Arguments 'translation_class' and 'null_translation_class'
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103 specify the classes that are instantiated for existing
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104 and non-existing translations, respectively.
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105 """
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106 return i18n.get_translation(language=language,
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107 tracker_home=tracker_home,
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108 translation_class=translation_class,
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109 null_translation_class=null_translation_class)
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110
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111 # vim: set et sts=4 sw=4 :
Roundup Issue Tracker: http://roundup-tracker.org/