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40 lines
1.1 KiB
Python
40 lines
1.1 KiB
Python
from __future__ import absolute_import, division, print_function, unicode_literals
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'''
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Dynamic language lookup of translations for user-visible strings.
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'''
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__license__ = 'GPL v3'
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__copyright__ = '2008, Marshall T. Vandegrift <llasram@gmail.com>'
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import io
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from gettext import GNUTranslations
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from calibre.constants import ispy3
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from calibre.utils.localization import get_lc_messages_path
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from zipfile import ZipFile
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__all__ = ['translate']
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_CACHE = {}
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def translate(lang, text):
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trans = None
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if lang in _CACHE:
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trans = _CACHE[lang]
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else:
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mpath = get_lc_messages_path(lang)
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if mpath is not None:
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with ZipFile(P('localization/locales.zip',
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allow_user_override=False), 'r') as zf:
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try:
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buf = io.BytesIO(zf.read(mpath + '/messages.mo'))
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except Exception:
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pass
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else:
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trans = GNUTranslations(buf)
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_CACHE[lang] = trans
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if trans is None:
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return getattr(__builtins__, '_', lambda x: x)(text)
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f = getattr(trans, 'gettext' if ispy3 else 'ugettext')
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return f(text)
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