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annotate roundup/cgi/TranslationService.py @ 7965:6763813d9d34

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issue2551350 - Python changes for 3.12 with roundup 2.3.0 cgitb.py Fix change in pydoc.html.header() signature. It dropped foreground and background color arguments in 3.11 and newer. Also enable test code for the html function.
author John Rouillard <rouilj@ieee.org>
date Tue, 14 May 2024 21:27:28 -0400
parents 07ce4e4110f5
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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 from roundup import i18n
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17 from roundup.cgi.PageTemplates import Expressions, PathIterator, TALES
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18 from roundup.cgi.TAL import TALInterpreter
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19 from roundup.anypy.strings import us2u, u2s
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20
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21 ### Translation classes
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22
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23
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24 class TranslationServiceMixin:
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25
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26 def translate(self, domain, msgid, mapping=None,
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27 context=None, target_language=None, default=None):
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28 _msg = self.gettext(msgid)
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29 # print ("TRANSLATE", msgid, _msg, mapping, context)
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30 _msg = TALInterpreter.interpolate(_msg, mapping)
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31 return _msg
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32
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33 if hasattr(i18n.RoundupTranslations, 'ugettext'):
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34 def gettext(self, msgid):
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35 msgid = us2u(msgid)
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36 msgtrans = self.ugettext(msgid)
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37 return u2s(msgtrans)
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38
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39 def ngettext(self, singular, plural, number):
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40 singular = us2u(singular)
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41 plural = us2u(plural)
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42 msgtrans = self.ungettext(singular, plural, number)
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43 return u2s(msgtrans)
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44
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46 class TranslationService(TranslationServiceMixin, i18n.RoundupTranslations):
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47 pass
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48
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49
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50 class NullTranslationService(TranslationServiceMixin,
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51 i18n.RoundupNullTranslations):
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52 if hasattr(i18n.RoundupNullTranslations, 'ugettext'):
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53 def ugettext(self, message):
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54 if self._fallback:
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55 return self._fallback.ugettext(message)
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56 # Sometimes the untranslatable message is a UTF-8 encoded string
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57 # (thanks to PageTemplate's internals).
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58 message = us2u(message)
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59 return message
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60
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61 ### TAL patching
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62 #
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63 # Template Attribute Language (TAL) uses only global translation service,
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64 # which is not thread-safe. We will use context variable 'i18n'
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65 # to access request-dependent transalation service (with domain
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66 # and target language set during initializations of the roundup
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67 # client interface.
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68 #
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69
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70
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71 class Context(TALES.Context):
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72
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73 def __init__(self, compiler, contexts):
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74 TALES.Context.__init__(self, compiler, contexts)
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75 if not self.contexts.get('i18n', None):
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76 # if the context contains no TranslationService,
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77 # create default one
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78 self.contexts['i18n'] = get_translation()
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79 self.i18n = self.contexts['i18n']
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80
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81 def translate(self, domain, msgid, mapping=None,
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82 context=None, target_language=None, default=None):
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83 if context is None:
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84 context = self.contexts.get('here')
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85 return self.i18n.translate(domain, msgid,
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86 mapping=mapping, context=context,
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87 default=default,
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88 target_language=target_language)
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89
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90
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91 class Engine(TALES.Engine):
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92
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93 def getContext(self, contexts=None, **kwcontexts):
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94 if contexts is not None:
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95 if kwcontexts:
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96 kwcontexts.update(contexts)
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97 else:
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98 kwcontexts = contexts
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99 return Context(self, kwcontexts)
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100
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101
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102 # patching TAL like this is a dirty hack,
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103 # but i see no other way to specify different Context class
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104 Expressions._engine = Engine(PathIterator.Iterator)
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105 Expressions.installHandlers(Expressions._engine)
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106
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107 ### main API function
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108
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109
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110 def get_translation(language=None, tracker_home=None,
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111 translation_class=TranslationService,
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112 null_translation_class=NullTranslationService):
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113 """Return Translation object for given language and domain
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114
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115 Arguments 'translation_class' and 'null_translation_class'
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116 specify the classes that are instantiated for existing
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117 and non-existing translations, respectively.
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118 """
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119 return i18n.get_translation(language=language,
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120 tracker_home=tracker_home,
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121 translation_class=translation_class,
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122 null_translation_class=null_translation_class)
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123
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124 # vim: set et sts=4 sw=4 :
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