"""Some i18n/gettext utilities.
:organization: Logilab
:copyright: 2001-2009 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
"""
__docformat__ = "restructuredtext en"
import re
import os
from os.path import join, basename, splitext, exists
from glob import glob
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()):
print >> output, '_("%s")' % match.group(2)
output.close()
def add_msg(w, msgid):
"""write an empty pot msgid definition"""
if isinstance(msgid, unicode):
msgid = msgid.encode('utf-8')
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 execute(cmd):
"""display the command, execute it and raise an Exception if returned
status != 0
"""
print cmd.replace(os.getcwd() + os.sep, '')
status = os.system(cmd)
if status != 0:
raise Exception()
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 logilab.common.fileutils import ensure_fs_mode
print 'compiling %s catalogs...' % 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 application messages' catalog with the stdlib's one
execute('msgcat --use-first --sort-output --strict %s > %s'
% (' '.join(pofiles), mergedpo))
# make sure the .mo file is writeable and compile with *msgfmt*
applmo = join(destdir, lang, 'LC_MESSAGES', 'cubicweb.mo')
try:
ensure_fs_mode(applmo)
except OSError:
pass # suppose not exists
execute('msgfmt %s -o %s' % (mergedpo, applmo))
except Exception, ex:
errors.append('while handling language %s: %s' % (lang, ex))
try:
# clean everything
os.unlink(mergedpo)
except Exception:
continue
return errors