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 def get_languages(langs):
  45     if not langs: return settings.LANGUAGES
  46     langs = langs.split(',')
  47     lm = dict(settings.LANGUAGES)
  48     return map(lambda l: (l, lm.get(l, l)), langs)
  49
  50
  51 class Command(BaseCommand):
  52     option_list = BaseCommand.option_list + (
  53         make_option('-d', '--directory', help='Specify which directory should hold generated PO files', dest='directory'),
  54         make_option('-l', '--load', help='load locales back to source', action='store_true', dest='load', default=False),
  55         make_option('-L', '--language', help='locales to load', dest='lang', default=None),
  56         make_option('-n', '--poname', help='name of the po file [no extension]', dest='poname', default=None),
  57         )
  58     help = 'Export models from app to po files'
  59     args = 'app'
  60
  61     def get_models(self, app):
  62         r = []
  63         for mdname in dir(app.models):
  64             if mdname[0] == '_': continue
  65             md = getattr(app.models, mdname)
  66             try:
  67                 opts = translator.get_options_for_model(md)
  68                 r.append((md, opts))
  69             except NotRegistered:
  70                 continue
  71         return r
  72
  73     def handle(self, appname, **options):
  74         if not options['poname']: options['poname'] = appname
  75         app = __import__(appname)
  76
  77         if options['load']:
  78             objects = {}
  79             modmod = {}
  80             for md, opts in self.get_models(app):
  81                 if not md.__name__ in objects:
  82                     objects[md.__name__] = {}
  83                     modmod['model'] = md
  84
  85             languages = get_languages(options['lang'])
  86
  87             for lng in zip(*languages)[0]:
  88                 pofile = os.path.join(options['directory'], lng, options['poname'] + '.po')
  89                 if not os.path.exists(pofile): raise OSError('%s po file: %s not found' % (appname, pofile))
  90                 po = polib.pofile(pofile)
  91                 for entry in po:
  92                     loc, pk = entry.occurrences[0]
  93                     _appname, modelname, fieldname = loc.split('/')
  94                     try:
  95                         obj = objects[modelname][pk]
  96                     except KeyError:
  97                         obj = modmod['model'].objects.get(pk=pk)
  98                         objects[modelname][pk] = obj
  99                     setattr(obj, fieldname, entry.msgstr)
 100
 101             for mod, objcs in objects.items():
 102                 for o in objcs.values():
 103                     o.save()
 104
 105         else:
 106             pofiles = {}
 107             for md, opts in self.get_models(app):
 108                 for obj in md.objects.all().order_by('pk'):
 109                     for fld in opts.fields:
 110                         for locfld in opts.localized_fieldnames[fld]:
 111                             cur_lang = lang(locfld)
 112                             try:
 113                                 po = pofiles[cur_lang]
 114                             except:
 115                                 po = make_po(cur_lang)
 116                                 pofiles[cur_lang] = po
 117
 118                             entry = polib.POEntry(
 119                                 msgid=getattr(obj, '%s_%s' % (fld, settings.LANGUAGE_CODE)),
 120                                 msgstr=getattr(obj, locfld),
 121                                 occurrences=[('%s/%s/%s' % (appname, md.__name__, locfld), obj.id)])
 122                             po.append(entry)
 123
 124             directory = options['directory']
 125             for lng, po in pofiles.items():
 126                 try: os.makedirs(os.path.join(directory, lng))
 127                 except OSError: pass
 128                 po.save(os.path.join(directory, lng, '%s.po' % options['poname']))