[subtitles] fixed multiple subtitles language separated by comma after merge

As mentioned in the pull request, I forgot to include this changes.
https://github.com/rg3/youtube-dl/commit/aa6a10c44a8e2e86f709c5301f9ea6ac3f01f002

test/test_dailymotion_subtitles.py

@@ -36,20 +36,20 @@ class TestDailymotionSubtitles(unittest.TestCase):
         self.assertEqual(md5(subtitles['en']), '976553874490cba125086bbfea3ff76f')
     def test_subtitles_lang(self):
         self.DL.params['writesubtitles'] = True
-        self.DL.params['subtitleslang'] = 'fr'
+        self.DL.params['subtitleslangs'] = ['fr']
         subtitles = self.getSubtitles()
         self.assertEqual(md5(subtitles['fr']), '594564ec7d588942e384e920e5341792')
     def test_allsubtitles(self):
         self.DL.params['allsubtitles'] = True
         subtitles = self.getSubtitles()
         self.assertEqual(len(subtitles.keys()), 5)
-    def test_list_subtitles(self): #ojo
+    def test_list_subtitles(self):
         self.DL.params['listsubtitles'] = True
         info_dict = self.getInfoDict()
         self.assertEqual(info_dict, None)
     def test_automatic_captions(self):
         self.DL.params['writeautomaticsub'] = True
-        self.DL.params['subtitleslang'] = 'en'
+        self.DL.params['subtitleslang'] = ['en']
         subtitles = self.getSubtitles()
         self.assertTrue(len(subtitles.keys()) == 0)
     def test_nosubtitles(self):
@@ -57,6 +57,13 @@ class TestDailymotionSubtitles(unittest.TestCase):
         self.DL.params['allsubtitles'] = True
         subtitles = self.getSubtitles()
         self.assertEqual(len(subtitles), 0)
+    def test_multiple_langs(self):
+        self.DL.params['writesubtitles'] = True
+        langs = ['es', 'fr', 'de']
+        self.DL.params['subtitleslangs'] = langs
+        subtitles = self.getSubtitles()
+        for lang in langs:
+            self.assertTrue(subtitles.get(lang) is not None, u'Subtitles for \'%s\' not extracted' % lang)
 
 if __name__ == '__main__':
     unittest.main()

test/test_youtube_subtitles.py

@@ -37,7 +37,7 @@ class TestYoutubeSubtitles(unittest.TestCase):
         self.assertEqual(md5(subtitles['en']), '4cd9278a35ba2305f47354ee13472260')
     def test_youtube_subtitles_lang(self):
         self.DL.params['writesubtitles'] = True
-        self.DL.params['subtitleslang'] = 'it'
+        self.DL.params['subtitleslangs'] = ['it']
         subtitles = self.getSubtitles()
         self.assertEqual(md5(subtitles['it']), '164a51f16f260476a05b50fe4c2f161d')
     def test_youtube_allsubtitles(self):
@@ -61,7 +61,7 @@ class TestYoutubeSubtitles(unittest.TestCase):
     def test_youtube_automatic_captions(self):
         self.url = '8YoUxe5ncPo'
         self.DL.params['writeautomaticsub'] = True
-        self.DL.params['subtitleslang'] = 'it'
+        self.DL.params['subtitleslangs'] = ['it']
         subtitles = self.getSubtitles()
         self.assertTrue(subtitles['it'] is not None)
     def test_youtube_nosubtitles(self):
@@ -69,7 +69,14 @@ class TestYoutubeSubtitles(unittest.TestCase):
         self.DL.params['allsubtitles'] = True
         subtitles = self.getSubtitles()
         self.assertEqual(len(subtitles), 0)
-
+    def test_youtube_multiple_langs(self):
+        self.url = 'QRS8MkLhQmM'
+        self.DL.params['writesubtitles'] = True
+        langs = ['it', 'fr', 'de']
+        self.DL.params['subtitleslangs'] = langs
+        subtitles = self.getSubtitles()
+        for lang in langs:
+            self.assertTrue(subtitles.get(lang) is not None, u'Subtitles for \'%s\' not extracted' % lang)
 
 if __name__ == '__main__':
     unittest.main()

youtube_dl/YoutubeDL.py

@@ -76,7 +76,7 @@ class YoutubeDL(object):
     allsubtitles:      Downloads all the subtitles of the video
     listsubtitles:     Lists all available subtitles for the video
     subtitlesformat:   Subtitle format [srt/sbv/vtt] (default=srt)
-    subtitleslang:     Language of the subtitles to download
+    subtitleslangs:     Language of the subtitles to download
     keepvideo:         Keep the video file after post-processing
     daterange:         A DateRange object, download only if the upload_date is in the range.
     skip_download:     Skip the actual download of the video file

youtube_dl/__init__.py

@@ -83,6 +83,9 @@ def parseOpts(overrideArguments=None):
 
         return "".join(opts)
 
+    def _comma_separated_values_options_callback(option, opt_str, value, parser):
+        setattr(parser.values, option.dest, value.split(','))
+
     def _find_term_columns():
         columns = os.environ.get('COLUMNS', None)
         if columns:
@@ -203,9 +206,10 @@ def parseOpts(overrideArguments=None):
     subtitles.add_option('--sub-format',
             action='store', dest='subtitlesformat', metavar='FORMAT',
             help='subtitle format (default=srt) ([sbv/vtt] youtube only)', default='srt')
-    subtitles.add_option('--sub-lang', '--srt-lang',
-            action='store', dest='subtitleslang', metavar='LANG',
-            help='language of the subtitles to download (optional) use IETF language tags like \'en\'')
+    subtitles.add_option('--sub-lang', '--sub-langs', '--srt-lang',
+            action='callback', dest='subtitleslangs', metavar='LANGS', type='str',
+            default=[], callback=_comma_separated_values_options_callback,
+            help='languages of the subtitles to download (optional) separated by commas, use IETF language tags like \'en,pt\'')
 
     downloader.add_option('-r', '--rate-limit',
             dest='ratelimit', metavar='LIMIT', help='maximum download rate (e.g. 50k or 44.6m)')
@@ -570,7 +574,7 @@ def _real_main(argv=None):
         'allsubtitles': opts.allsubtitles,
         'listsubtitles': opts.listsubtitles,
         'subtitlesformat': opts.subtitlesformat,
-        'subtitleslang': opts.subtitleslang,
+        'subtitleslangs': opts.subtitleslangs,
         'matchtitle': decodeOption(opts.matchtitle),
         'rejecttitle': decodeOption(opts.rejecttitle),
         'max_downloads': opts.max_downloads,

youtube_dl/extractor/subtitles.py

@@ -21,24 +21,29 @@ class SubtitlesIE(InfoExtractor):
 
     def _extract_subtitles(self, video_id):
         """ returns {sub_lang: sub} or {} if subtitles not found """
-        sub_lang_list = self._get_available_subtitles(video_id)
-        if not sub_lang_list:  # error, it didn't get the available subtitles
+        available_subs_list = self._get_available_subtitles(video_id)
+        if not available_subs_list:  # error, it didn't get the available subtitles
             return {}
+        if self._downloader.params.get('allsubtitles', False):
+            sub_lang_list = available_subs_list
+        else:
+            if self._downloader.params.get('writesubtitles', False):
+                if self._downloader.params.get('subtitleslangs', False):
+                    requested_langs = self._downloader.params.get('subtitleslangs')
+                elif 'en' in available_subs_list:
+                    requested_langs = ['en']
+                else:
+                    requested_langs = [list(available_subs_list.keys())[0]]
 
-        if self._downloader.params.get('writesubtitles', False):
-            if self._downloader.params.get('subtitleslang', False):
-                sub_lang = self._downloader.params.get('subtitleslang')
-            elif 'en' in sub_lang_list:
-                sub_lang = 'en'
-            else:
-                sub_lang = list(sub_lang_list.keys())[0]
-            if not sub_lang in sub_lang_list:
-                self._downloader.report_warning(u'no closed captions found in the specified language "%s"' % sub_lang)
-                return {}
-            sub_lang_list = {sub_lang: sub_lang_list[sub_lang]}
+                sub_lang_list = {}
+                for sub_lang in requested_langs:
+                    if not sub_lang in available_subs_list:
+                        self._downloader.report_warning(u'no closed captions found in the specified language "%s"' % sub_lang)
+                        continue
+                    sub_lang_list[sub_lang] = available_subs_list[sub_lang]
 
         subtitles = {}
-        for sub_lang, url in sub_lang_list.iteritems():
+        for sub_lang, url in sub_lang_list.items():
             subtitle = self._request_subtitle_url(sub_lang, url)
             if subtitle:
                 subtitles[sub_lang] = subtitle

youtube_dl/extractor/youtube.py

@@ -160,7 +160,7 @@ class YoutubeSubtitlesIE(SubtitlesIE):
     def _request_automatic_caption(self, video_id, webpage):
         """We need the webpage for getting the captions url, pass it as an
            argument to speed up the process."""
-        sub_lang = self._downloader.params.get('subtitleslang') or 'en'
+        sub_lang = (self._downloader.params.get('subtitleslangs') or ['en'])[0]
         sub_format = self._downloader.params.get('subtitlesformat')
         self.to_screen(u'%s: Looking for automatic captions' % video_id)
         mobj = re.search(r';ytplayer.config = ({.*?});', webpage)