cubicweb/cwgettext.py
author Philippe Pepiot <philippe.pepiot@logilab.fr>
Thu, 19 Jan 2017 15:27:39 +0100
changeset 11899 bf6106b91633
parent 11823 4f43e64603ef
child 12567 26744ad37953
permissions -rw-r--r--
[schema] load schema from modules names instead of directories Introspect cubicweb, cubes and apphome using pkgutil to generate the full list of modules names for loading the schema. Keep historical behavior and check if source .py file exists if a module is found using python bytecode file (.pyc and .pyo) Loading schema from apphome require apphome to be present in sys.path and that "schema" module resolve to a file located in apphome. Update migraction tests to explicitely update sys.path when loading schema from different apps, use a contextmanager for this so it's more readable. Require updated logilab-common and yams

# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of CubicWeb.
#
# CubicWeb is free software: you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 2.1 of the License, or (at your option)
# any later version.
#
# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.

import gettext

from six import PY3


class cwGNUTranslations(gettext.GNUTranslations):
    # The encoding of a msgctxt and a msgid in a .mo file is
    # msgctxt + "\x04" + msgid (gettext version >= 0.15)
    CONTEXT_ENCODING = "%s\x04%s"

    def pgettext(self, context, message):
        ctxt_msg_id = self.CONTEXT_ENCODING % (context, message)
        missing = object()
        tmsg = self._catalog.get(ctxt_msg_id, missing)
        if tmsg is missing:
            if self._fallback:
                return self._fallback.pgettext(context, message)
            return message
        # Encode the Unicode tmsg back to an 8-bit string, if possible
        if self._output_charset:
            return tmsg.encode(self._output_charset)
        elif self._charset:
            return tmsg.encode(self._charset)
        return tmsg

    def lpgettext(self, context, message):
        ctxt_msg_id = self.CONTEXT_ENCODING % (context, message)
        missing = object()
        tmsg = self._catalog.get(ctxt_msg_id, missing)
        if tmsg is missing:
            if self._fallback:
                return self._fallback.lpgettext(context, message)
            return message
        if self._output_charset:
            return tmsg.encode(self._output_charset)
        return tmsg.encode(locale.getpreferredencoding())

    def npgettext(self, context, msgid1, msgid2, n):
        ctxt_msg_id = self.CONTEXT_ENCODING % (context, msgid1)
        try:
            tmsg = self._catalog[(ctxt_msg_id, self.plural(n))]
            if self._output_charset:
                return tmsg.encode(self._output_charset)
            elif self._charset:
                return tmsg.encode(self._charset)
            return tmsg
        except KeyError:
            if self._fallback:
                return self._fallback.npgettext(context, msgid1, msgid2, n)
            if n == 1:
                return msgid1
            else:
                return msgid2        

    def lnpgettext(self, context, msgid1, msgid2, n):
        ctxt_msg_id = self.CONTEXT_ENCODING % (context, msgid1)
        try:
            tmsg = self._catalog[(ctxt_msg_id, self.plural(n))]
            if self._output_charset:
                return tmsg.encode(self._output_charset)
            return tmsg.encode(locale.getpreferredencoding())
        except KeyError:
            if self._fallback:
                return self._fallback.lnpgettext(context, msgid1, msgid2, n)
            if n == 1:
                return msgid1
            else:
                return msgid2

    if PY3:
        ugettext = gettext.GNUTranslations.gettext

    def upgettext(self, context, message):
        ctxt_message_id = self.CONTEXT_ENCODING % (context, message)
        missing = object()
        tmsg = self._catalog.get(ctxt_message_id, missing)
        if tmsg is missing:
            # XXX logilab patch for compat w/ catalog generated by cw < 3.5
            return self.ugettext(message)
            if self._fallback:
                return self._fallback.upgettext(context, message)
            return unicode(message)
        return tmsg

    def unpgettext(self, context, msgid1, msgid2, n):
        ctxt_message_id = self.CONTEXT_ENCODING % (context, msgid1)
        try:
            tmsg = self._catalog[(ctxt_message_id, self.plural(n))]
        except KeyError:
            if self._fallback:
                return self._fallback.unpgettext(context, msgid1, msgid2, n)
            if n == 1:
                tmsg = unicode(msgid1)
            else:
                tmsg = unicode(msgid2)
        return tmsg


def translation(domain, localedir=None, languages=None,
                class_=None, fallback=False, codeset=None):
    if class_ is None:
        class_ = cwGNUTranslations
    return gettext.translation(domain, localedir=localedir,
                               languages=languages, class_=class_,
                               fallback=fallback, codeset=codeset)