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# i18n.py - internationalization support for mercurial
#
# Copyright 2005, 2006 Matt Mackall <mpm@selenic.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
import encoding
import gettext, sys, os
# modelled after templater.templatepath:
if getattr(sys, 'frozen', None) is not None:
module = sys.executable
else:
module = __file__
base = os.path.dirname(module)
for dir in ('.', '..'):
localedir = os.path.join(base, dir, 'locale')
if os.path.isdir(localedir):
break
t = gettext.translation('hg', localedir, fallback=True)
def gettext(message):
"""Translate message.
The message is looked up in the catalog to get a Unicode string,
which is encoded in the local encoding before being returned.
Important: message is restricted to characters in the encoding
given by sys.getdefaultencoding() which is most likely 'ascii'.
"""
# If message is None, t.ugettext will return u'None' as the
# translation whereas our callers expect us to return None.
if message is None:
return message
paragraphs = message.split('\n\n')
# Be careful not to translate the empty string -- it holds the
# meta data of the .po file.
u = u'\n\n'.join([p and t.ugettext(p) or '' for p in paragraphs])
try:
# encoding.tolocal cannot be used since it will first try to
# decode the Unicode string. Calling u.decode(enc) really
# means u.encode(sys.getdefaultencoding()).decode(enc). Since
# the Python encoding defaults to 'ascii', this fails if the
# translated string use non-ASCII characters.
return u.encode(encoding.encoding, "replace")
except LookupError:
# An unknown encoding results in a LookupError.
return message
def _plain():
if 'HGPLAIN' not in os.environ and 'HGPLAINEXCEPT' not in os.environ:
return False
exceptions = os.environ.get('HGPLAINEXCEPT', '').strip().split(',')
return 'i18n' not in exceptions
if _plain():
_ = lambda message: message
else:
_ = gettext
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