New i18n.py script to handle I18N tasks

The set of languages is deduced from locale/ directory content.

Usage: i18n.py [options]
 WARNING: This program should be called from ocitysmap/ directory!

Options:
  -h, --help            show this help message and exit
  -P, --make-pot        make locale/ocitysmap.pot
  -p, --make-po         merge locale/ocitysmap.pot with
                        locale/*/LC_MESSAGES/ocitysmap.po
  -m, --compile-mo      compile locale/*/LC_MESSAGES/ocitysmap.mo files
  -n LANGUAGE_CODE, --new-language=LANGUAGE_CODE
                        create .pot file for a new language. LANGUAGE_CODE is
                        like "fr_FR".

i18n.py

@@ -0,0 +1,103 @@
+#! /usr/bin/env python
+# -*- coding: utf-8 -*-
+
+# ocitysmap, city map and street index generator from OpenStreetMap data
+# Copyright (C) 2009  David Decotigny
+# Copyright (C) 2009  Frédéric Lehobey
+# Copyright (C) 2009  David Mentré
+# Copyright (C) 2009  Maxime Petazzoni
+# Copyright (C) 2009  Thomas Petazzoni
+# Copyright (C) 2009  Gaël Utard
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or 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 Affero General Public License for more details.
+
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+import os
+import sys
+import shutil
+import optparse
+import subprocess
+
+def make_pot():
+    print "Make locale/ocitysmap.pot"
+    subprocess.check_call(['pygettext', '-o', 'ocitysmap.pot', '-p', 'locale',
+                           'ocitysmap/street_index.py',
+                           'ocitysmap/draw_utils.py'])
+    return
+
+def make_po(languages):
+    print "Merge locale/ocitysmap.pot into locale/*/LC_MESSAGES/ocitysmap.po"
+    for l in languages:
+        print " * %s" % l
+        subprocess.check_call(['msgmerge', '-U',
+                               'locale/%s/LC_MESSAGES/ocitysmap.po' % l,
+                               'locale/ocitysmap.pot'])
+    return
+
+def compile_mo(languages):
+    print "Compile locale/*/LC_MESSAGES/ocitysmap.mo files"
+    for l in languages:
+        print " * %s" % l
+        subprocess.check_call(['msgfmt', '-o',
+                               'locale/%s/LC_MESSAGES/ocitysmap.mo' %l,
+                               'locale/%s/LC_MESSAGES/ocitysmap.po' %l])
+    return
+
+def create_language(country_code):
+    print "Create directory for %s" % country_code
+    os.makedirs('locale/%s/LC_MESSAGES' % country_code)
+    shutil.copyfile('locale/ocitysmap.pot',
+                    'locale/%s/LC_MESSAGES/ocitysmap.po' % country_code)
+    return
+
+def get_languages():
+    l = os.listdir('locale')
+    return filter(lambda s: s!='ocitysmap.pot', l)
+
+def main():
+    usage = '%prog [options]\n WARNING: This program should be called from ocitysmap/ directory!'
+
+    parser = optparse.OptionParser(usage=usage)
+    parser.add_option('-P', '--make-pot', dest='make_pot',
+                      action='store_true', default=False,
+                      help="make locale/ocitysmap.pot")
+    parser.add_option('-p', '--make-po', dest='make_po',
+                      action='store_true', default=False,
+                      help="merge locale/ocitysmap.pot with locale/*/LC_MESSAGES/ocitysmap.po")
+    parser.add_option('-m', '--compile-mo', dest='compile_mo',
+                      action='store_true', default=False,
+                      help="compile locale/*/LC_MESSAGES/ocitysmap.mo files")
+    parser.add_option('-n', '--new-language', dest='new_language',
+                      metavar='LANGUAGE_CODE',
+                      help='create .pot file for a new language. '
+                      'LANGUAGE_CODE is like "fr_FR".',
+                      default=None)
+
+    (options, args) = parser.parse_args()
+    if len(args):
+        parser.print_help()
+        return 1
+
+    languages = get_languages()
+
+    if options.make_pot:
+        make_pot()
+    if options.make_po:
+        make_po(languages)
+    if options.compile_mo:
+        compile_mo(languages)
+    if options.new_language:
+        create_language(options.new_language)
+
+if __name__ == '__main__':
+    sys.exit(main())