apps/modeltranslation/management/commands/translation2po.py

   1
   2 import os
   3 import sys
   4 import time
   5 from optparse import make_option
   6 from django.conf import settings
   7 from django.core.management.base import BaseCommand
   8 from django.core.management.color import color_style
   9
  10 import polib
  11 import modeltranslation.models
  12 from modeltranslation.translator import translator, NotRegistered
  13
  14
  15 def metadata(language=''):
  16     "get metadata for PO, given language code"
  17     t = time.strftime('%Y-%m-%d %H:%M%z')
  18
  19     return {
  20         'Project-Id-Version': '1.0',
  21         'Report-Msgid-Bugs-To': 'marcin.koziej@nowoczesnapolska.org.pl',
  22         'POT-Creation-Date': '%s' % t,
  23         'PO-Revision-Date': '%s' % t,
  24         'Last-Translator': 'you <you@example.com>',
  25         'Language-Team': '%s' % dict(settings.LANGUAGES).get(language, language),
  26         'MIME-Version': '1.0',
  27         'Content-Type': 'text/plain; charset=utf-8',
  28         'Content-Transfer-Encoding': '8bit',
  29         }
  30
  31
  32 def lang(field_name):
  33     "Get the language code from localized field name"
  34     return field_name.split('_')[-1]
  35
  36
  37 def make_po(language=''):
  38     "Create new POFile object for language code"
  39     po = polib.POFile()
  40     po.metadata = metadata(language)
  41     return po
  42
  43
  44 class Command(BaseCommand):
  45     option_list = BaseCommand.option_list + (
  46         make_option('-d', '--directory', help='Specify which directory should hold generated PO files', dest='directory'),
  47         make_option('-l', '--load', help='load locales back to source', action='store_true', dest='load', default=False),
  48         )
  49     help = 'Export models from app to po files'
  50     args = 'app'
  51
  52     def get_models(self, app):
  53         r = []
  54         for mdname in dir(app.models):
  55             if mdname[0] == '_': continue
  56             md = getattr(app.models, mdname)
  57             try:
  58                 opts = translator.get_options_for_model(md)
  59                 r.append((md, opts))
  60             except NotRegistered:
  61                 continue
  62         return r
  63
  64     def handle(self, appname, **options):
  65         app = __import__(appname)
  66         if options['load']:
  67             objects = {}
  68             modmod = {}
  69             for md, opts in self.get_models(app):
  70                 if not md.__name__ in objects:
  71                     objects[md.__name__] = {}
  72                     modmod['model'] = md
  73
  74             for lng in zip(*settings.LANGUAGES)[0]:
  75                 pofile = os.path.join(options['directory'], lng, appname + '.po')
  76                 po = polib.pofile(pofile)
  77                 for entry in po:
  78                     loc, pk = entry.occurrences[0]
  79                     _appname, modelname, fieldname = loc.split('/')
  80                     try:
  81                         obj = objects[modelname][pk]
  82                     except KeyError:
  83                         obj = modmod['model'].objects.get(pk=pk)
  84                         objects[modelname][pk] = obj
  85                     setattr(obj, fieldname, entry.msgstr)
  86
  87             for mod, objcs in objects.items():
  88                 for o in objcs.values():
  89                     o.save()
  90
  91         else:
  92             pofiles = {}
  93             for md, opts in self.get_models(app):
  94                 for obj in md.objects.all().order_by('pk'):
  95                     for fld in opts.fields:
  96                         for locfld in opts.localized_fieldnames[fld]:
  97                             cur_lang = lang(locfld)
  98                             try:
  99                                 po = pofiles[cur_lang]
 100                             except:
 101                                 po = make_po(cur_lang)
 102                                 pofiles[cur_lang] = po
 103
 104                             entry = polib.POEntry(
 105                                 msgid=getattr(obj, '%s_%s' % (fld, settings.LANGUAGE_CODE)),
 106                                 msgstr=getattr(obj, locfld),
 107                                 occurrences=[('%s/%s/%s' % (appname, md.__name__, locfld), obj.id)])
 108                             po.append(entry)
 109
 110             directory = options['directory']
 111             for lng, po in pofiles.items():
 112                 try: os.makedirs(os.path.join(directory, lng))
 113                 except OSError: pass
 114                 po.save(os.path.join(directory, lng, '%s.po' % appname))