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98 lines
2.9 KiB
Python
98 lines
2.9 KiB
Python
# Authors:
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# Rob Crittenden <rcritten@redhat.com>
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# Jason Gerard DeRose <jderose@redhat.com>
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#
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# Copyright (C) 2008 Red Hat
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# see file 'COPYING' for use and warranty contextrmation
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License as
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# published by the Free Software Foundation; version 2 only
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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"""
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Per-request thread-local data.
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"""
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import threading
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import locale
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import gettext
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from base import ReadOnly, lock
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from constants import OVERRIDE_ERROR, CALLABLE_ERROR
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# Thread-local storage of most per-request information
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context = threading.local()
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class Connection(ReadOnly):
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"""
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Base class for connection objects stored on `request.context`.
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"""
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def __init__(self, conn, disconnect):
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self.conn = conn
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if not callable(disconnect):
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raise TypeError(
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CALLABLE_ERROR % ('disconnect', disconnect, type(disconnect))
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)
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self.disconnect = disconnect
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lock(self)
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def destroy_context():
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"""
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Delete all attributes on thread-local `request.context`.
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"""
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# need to use .items(), 'cos value.disconnect modifies the dict
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for (name, value) in context.__dict__.items():
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if isinstance(value, Connection):
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value.disconnect()
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def ugettext(message):
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if hasattr(context, 'ugettext'):
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return context.ugettext(message)
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return message.decode('UTF-8')
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def ungettext(singular, plural, n):
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if hasattr(context, 'ungettext'):
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return context.ungettext(singular, plural, n)
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if n == 1:
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return singular.decode('UTF-8')
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return plural.decode('UTF-8')
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def set_languages(*languages):
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if hasattr(context, 'languages'):
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raise StandardError(OVERRIDE_ERROR %
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('context', 'languages', context.languages, languages)
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)
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if len(languages) == 0:
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languages = locale.getdefaultlocale()[:1]
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context.languages = languages
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assert type(context.languages) is tuple
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def create_translation(domain, localedir, *languages):
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if hasattr(context, 'ugettext') or hasattr(context, 'ungettext'):
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raise StandardError(
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'create_translation() already called in thread %r' %
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threading.currentThread().getName()
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)
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set_languages(*languages)
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translation = gettext.translation(domain,
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localedir=localedir, languages=context.languages, fallback=True
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)
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context.ugettext = translation.ugettext
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context.ungettext = translation.ungettext
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