105 lines
3.1 KiB
Python
105 lines
3.1 KiB
Python
"""
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Internationalization support.
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"""
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from django.utils.encoding import force_unicode
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from django.utils.functional import lazy, curry
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__all__ = ['gettext', 'gettext_noop', 'gettext_lazy', 'ngettext',
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'ngettext_lazy', 'string_concat', 'activate', 'deactivate',
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'get_language', 'get_language_bidi', 'get_date_formats',
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'get_partial_date_formats', 'check_for_language', 'to_locale',
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'get_language_from_request', 'templatize', 'ugettext', 'ugettext_lazy',
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'ungettext', 'deactivate_all']
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# Here be dragons, so a short explanation of the logic won't hurt:
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# We are trying to solve two problems: (1) access settings, in particular
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# settings.USE_I18N, as late as possible, so that modules can be imported
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# without having to first configure Django, and (2) if some other code creates
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# a reference to one of these functions, don't break that reference when we
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# replace the functions with their real counterparts (once we do access the
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# settings).
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def delayed_loader(real_name, *args, **kwargs):
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"""
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Call the real, underlying function. We have a level of indirection here so
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that modules can use the translation bits without actually requiring
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Django's settings bits to be configured before import.
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"""
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from django.conf import settings
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if settings.USE_I18N:
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from django.utils.translation import trans_real as trans
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else:
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from django.utils.translation import trans_null as trans
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# Make the originally requested function call on the way out the door.
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return getattr(trans, real_name)(*args, **kwargs)
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g = globals()
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for name in __all__:
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g['real_%s' % name] = curry(delayed_loader, name)
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del g, delayed_loader
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def gettext_noop(message):
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return real_gettext_noop(message)
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ugettext_noop = gettext_noop
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def gettext(message):
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return real_gettext(message)
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def ngettext(singular, plural, number):
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return real_ngettext(singular, plural, number)
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def ugettext(message):
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return real_ugettext(message)
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def ungettext(singular, plural, number):
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return real_ungettext(singular, plural, number)
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ngettext_lazy = lazy(ngettext, str)
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gettext_lazy = lazy(gettext, str)
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ungettext_lazy = lazy(ungettext, unicode)
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ugettext_lazy = lazy(ugettext, unicode)
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def activate(language):
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return real_activate(language)
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def deactivate():
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return real_deactivate()
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def get_language():
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return real_get_language()
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def get_language_bidi():
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return real_get_language_bidi()
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def get_date_formats():
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return real_get_date_formats()
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def get_partial_date_formats():
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return real_get_partial_date_formats()
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def check_for_language(lang_code):
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return real_check_for_language(lang_code)
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def to_locale(language):
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return real_to_locale(language)
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def get_language_from_request(request):
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return real_get_language_from_request(request)
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def templatize(src):
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return real_templatize(src)
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def deactivate_all():
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return real_deactivate_all()
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def _string_concat(*strings):
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"""
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Lazy variant of string concatenation, needed for translations that are
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constructed from multiple parts.
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"""
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return u''.join([force_unicode(s) for s in strings])
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string_concat = lazy(_string_concat, unicode)
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