i18n.py
author Sylvain Thénault <sylvain.thenault@logilab.fr>
Tue, 30 Jun 2015 10:06:00 +0200
changeset 10914 fed8bd56f223
parent 10776 b1834143fec8
permissions -rw-r--r--
[repository] deprecate the extid2eid based multi-sources API This API is cumbersome and lead to obfuscated code because of the callback mecanism implied when some entity has to be created. Since we dropped the "true" multi-source, this mecanism is not needed anymore and one should prefer to use the dataimport API inside its parser instead. Notice the cwxml parser will trigger the deprecation warning, it should not be used anymore in favor of ad-hoc parsers.

# 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/>.
"""Some i18n/gettext utilities."""
from __future__ import print_function

__docformat__ = "restructuredtext en"

import re
import os
from os.path import join, basename, splitext, exists
from glob import glob

from six import PY2

from cubicweb.toolsutils import create_dir

def extract_from_tal(files, output_file):
    """extract i18n strings from tal and write them into the given output file
    using standard python gettext marker (_)
    """
    output = open(output_file, 'w')
    for filepath in files:
        for match in re.finditer('i18n:(content|replace)="([^"]+)"', open(filepath).read()):
            output.write('_("%s")' % match.group(2))
    output.close()


def add_msg(w, msgid, msgctx=None):
    """write an empty pot msgid definition"""
    if PY2 and isinstance(msgid, unicode):
        msgid = msgid.encode('utf-8')
    if msgctx:
        if PY2 and isinstance(msgctx, unicode):
            msgctx = msgctx.encode('utf-8')
        w('msgctxt "%s"\n' % msgctx)
    msgid = msgid.replace('"', r'\"').splitlines()
    if len(msgid) > 1:
        w('msgid ""\n')
        for line in msgid:
            w('"%s"' % line.replace('"', r'\"'))
    else:
        w('msgid "%s"\n' % msgid[0])
    w('msgstr ""\n\n')

def execute2(args):
    # XXX replace this with check_output in Python 2.7
    from subprocess import Popen, PIPE, CalledProcessError
    p = Popen(args, stdout=PIPE, stderr=PIPE)
    out, err = p.communicate()
    if p.returncode != 0:
        exc = CalledProcessError(p.returncode, args[0])
        exc.cmd = args
        exc.data = (out, err)
        raise exc

def available_catalogs(i18ndir=None):
    if i18ndir is None:
        wildcard = '*.po'
    else:
        wildcard = join(i18ndir, '*.po')
    for popath in glob(wildcard):
        lang = splitext(basename(popath))[0]
        yield lang, popath


def compile_i18n_catalogs(sourcedirs, destdir, langs):
    """generate .mo files for a set of languages into the `destdir` i18n directory
    """
    from subprocess import CalledProcessError
    from logilab.common.fileutils import ensure_fs_mode
    print('-> compiling message catalogs to %s' % destdir)
    errors = []
    for lang in langs:
        langdir = join(destdir, lang, 'LC_MESSAGES')
        if not exists(langdir):
            create_dir(langdir)
        pofiles = [join(path, '%s.po' % lang) for path in sourcedirs]
        pofiles = [pof for pof in pofiles if exists(pof)]
        mergedpo = join(destdir, '%s_merged.po' % lang)
        try:
            # merge instance/cubes messages catalogs with the stdlib's one
            cmd = ['msgcat', '--use-first', '--sort-output', '--strict',
                   '-o', mergedpo] + pofiles
            execute2(cmd)
            # make sure the .mo file is writeable and compiles with *msgfmt*
            applmo = join(destdir, lang, 'LC_MESSAGES', 'cubicweb.mo')
            try:
                ensure_fs_mode(applmo)
            except OSError:
                pass # suppose not exists
            execute2(['msgfmt', mergedpo, '-o', applmo])
        except CalledProcessError as exc:
            errors.append(u'while handling language %s:\ncmd:\n%s\nstdout:\n%s\nstderr:\n%s\n' %
                          (lang, exc.cmd, repr(exc.data[0]), repr(exc.data[1])))
        except Exception as exc:
            errors.append(u'while handling language %s: %s' % (lang, exc))
        try:
            # clean everything
            os.unlink(mergedpo)
        except Exception:
            continue
    return errors