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# Copyright (C) 2000,2001 by the Free Software Foundation, Inc.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
import sys
import gettext
from Mailman import mm_cfg
from Mailman.SafeDict import SafeDict
_translation = gettext.NullTranslations()
def set_language(language):
global _translation
try:
_translation = gettext.translation('mailman', mm_cfg.MESSAGES_DIR,
[language])
except IOError:
# The selected language was not installed in messages, so fall back to
# untranslated English.
_translation = gettext.NullTranslations()
def _x(s, frame):
# Do translation of the given string into the current language, and do
# Ping-string interpolation into the resulting string.
#
# This lets you write something like:
#
# now = time.ctime(time.time())
# print _('The current time is: %(now)s')
#
# and have it Just Work. Note that the lookup order for keys in the
# original string is 1) locals dictionary, 2) globals dictionary.
#
# A `safe' dictionary is used so we won't get an exception if there's a
# missing key in the dictionary.
dict = SafeDict(frame.f_globals.copy())
dict.update(frame.f_locals)
# Translate the string, then interpolate into it.
return _translation.gettext(s) % dict
# Public version, to be used by most modules. There are three ways to get the
# stack frame to serve as the namespace source. First, we try to use the
# Python 2.1 extension to the sys module. If that's not there, we fall back
# to the optional Mailman enhancement module, and finally use the
# tried-and-true (but slow) pure Python approach. The latter should work in
# every supported version of Python.
if hasattr(sys, '_getframe'):
def _(s):
return _x(s, sys._getframe(1))
else:
try:
import _mailman
def _(s):
return _x(s, _mailman._getframe(1))
except ImportError:
def _(s):
exc = 'exc'
try: raise exc
except exc:
# Get one frame up the stack.
frame = sys.exc_info()[2].tb_frame.f_back
return _x(s, frame)
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