Attempt at Django 1.7
[wolnelektury.git] / apps / wolnelektury_core / management / commands / translation2po.py
1 # -*- coding: utf-8 -*-
2 # This file is part of Wolnelektury, licensed under GNU Affero GPLv3 or later.
3 # Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
4 #
5 import os
6 import time
7 from optparse import make_option
8 from django.conf import settings
9 from django.core.management.base import BaseCommand
10 from django.core.management.color import color_style
11 from django.db import models
12
13 import polib
14 import modeltranslation.models
15 from modeltranslation.translator import translator, NotRegistered
16
17
18 def metadata(language=''):
19     "get metadata for PO, given language code"
20     t = time.strftime('%Y-%m-%d %H:%M%z')
21
22     return {
23         'Project-Id-Version': '1.0',
24         'Report-Msgid-Bugs-To': settings.CONTACT_EMAIL,
25         'POT-Creation-Date': '%s' % t,
26         'PO-Revision-Date': '%s' % t,
27         'Last-Translator': 'you <you@example.com>',
28         'Language-Team': '%s' % dict(settings.LANGUAGES).get(language, language),
29         'MIME-Version': '1.0',
30         'Content-Type': 'text/plain; charset=utf-8',
31         'Content-Transfer-Encoding': '8bit',
32         }
33
34
35 def make_po(language=''):
36     "Create new POFile object for language code"
37     po = polib.POFile()
38     po.metadata = metadata(language)
39     return po
40
41
42 def get_languages(langs):
43     if not langs: return settings.LANGUAGES
44     langs = langs.split(',')
45     lm = dict(settings.LANGUAGES)
46     return map(lambda l: (l, lm.get(l, l)), langs)
47
48
49 class Command(BaseCommand):
50     option_list = BaseCommand.option_list + (
51         make_option('-d', '--directory', help='Specify which directory should hold generated PO files', dest='directory', default=''),
52         make_option('-l', '--load', help='load locales back to source', action='store_true', dest='load', default=False),
53         make_option('-L', '--language', help='locales to load', dest='lang', default=None),
54         make_option('-n', '--poname', help='name of the po file [no extension]', dest='poname', default=None),
55         make_option('-k', '--keep-running', help='keep running even when missing an input file', dest='keep_running', default=False, action='store_true'),
56         )
57     help = 'Export models from app to po files'
58     args = 'app'
59
60     def get_models(self, app):
61         for mdname in dir(app.models):
62             if mdname[0] == '_': continue
63             md = getattr(app.models, mdname)
64             try:
65                 assert issubclass(md, models.Model)
66             except (AssertionError, TypeError):
67                 continue
68
69             try:
70                 opts = translator.get_options_for_model(md)
71             except NotRegistered:
72                 continue
73             else:
74                 yield (md, opts)
75
76     def handle(self, appname, **options):
77         if not options['poname']: options['poname'] = appname
78         app = __import__(appname)
79
80         if options['load']:
81             objects = {}
82             modmod = {}
83             for md, opts in self.get_models(app):
84                 if not md.__name__ in objects:
85                     objects[md.__name__] = {}
86                     modmod['model'] = md
87
88             languages = get_languages(options['lang'])
89
90             for lng in zip(*languages)[0]:
91                 pofile = os.path.join(options['directory'], lng, options['poname'] + '.po')
92                 if not os.path.exists(pofile):
93                     if options['keep_running']:
94                         continue
95                     else:
96                         raise OSError('%s po file: %s not found' % (appname, pofile))
97                 po = polib.pofile(pofile)
98                 for entry in po:
99                     loc, _ignored = entry.occurrences[0]
100                     _appname, modelname, fieldname, pk = loc.split('/')
101                     try:
102                         obj = objects[modelname][pk]
103                     except KeyError:
104                         obj = modmod['model'].objects.get(pk=pk)
105                         objects[modelname][pk] = obj
106                     setattr(obj, fieldname, entry.msgstr)
107
108             for mod, objcs in objects.items():
109                 for o in objcs.values():
110                     o.save()
111
112         else:
113             pofiles = {}
114             for md, opts in self.get_models(app):
115                 for obj in md.objects.all().order_by('pk'):
116                     for fld, locflds in opts.local_fields.items():
117                         k = getattr(obj, '%s_%s' % (fld, settings.LANGUAGE_CODE)) or ''
118                         for locfld in locflds:
119                             cur_lang = locfld.language
120                             try:
121                                 po = pofiles[cur_lang]
122                             except:
123                                 po = make_po(cur_lang)
124                                 pofiles[cur_lang] = po
125                             v = locfld.value_from_object(obj) or ''
126                             entry = polib.POEntry(
127                                 msgid=k,
128                                 msgstr=v,
129                                 occurrences=[('%s/%s/%s/%s' % (appname, md.__name__, locfld.name, str(obj.pk)), 0)])
130                             po.append(entry)
131
132             directory = options['directory']
133             for lng, po in pofiles.items():
134                 os.makedirs(os.path.join(directory, lng))
135                 po.save(os.path.join(directory, lng, '%s.po' % options['poname']))