annotate mercurial/i18n.py @ 9158:d6eecafaf12f

doc: use reStructuredText for man and HTML pages

The Makefile now requires the rst2html and rst2man programs. Both can
be found in Debian testing or downloaded from the Docutils homepage:

  http://docutils.sf.net/
  http://docutils.sf.net/sandbox/manpage-writer/

The new HTML and man pages no longer contain huge amounts of
un-wrapping literal blocks, thanks to how snippets of reStructuredText
can easily be included inside other reStructuredText documents.

The HTML pages now have anchors for all sections, including the help
topics in hgrc.1 which were missing from the old HTML pages.

# i18n.py - internationalization support for mercurial
#
# Copyright 2005, 2006 Matt Mackall <[e-mail]>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2, incorporated herein by reference.

import encoding
import gettext, sys, os

# modelled after templater.templatepath:
if hasattr(sys, 'frozen'):
    module = sys.executable
else:
    module = __file__

base = os.path.dirname(module)
for dir in ('.', '..'):
    localedir = os.path.normpath(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

    # We cannot just run the text through encoding.tolocal since that
    # leads to infinite recursion when encoding._encoding is invalid.
    try:
        u = t.ugettext(message)
        return u.encode(encoding.encoding, "replace")
    except LookupError:
        return message

_ = gettext