X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=youtube_dl%2Fextractor%2Fsubtitles.py;h=41d740e871883c66097fe15ea6fd52326964dc90;hb=5f6a1245ffa9276c1af59b0835afeef67e2fb5b1;hp=a956297650c4bbdef7e65cddcb2c8eea581eaa51;hpb=d665f8d3cbb3ff507a76421e66fa96f55a830c08;p=youtube-dl

diff --git a/youtube_dl/extractor/subtitles.py b/youtube_dl/extractor/subtitles.py
index a95629765..41d740e87 100644
--- a/youtube_dl/extractor/subtitles.py
+++ b/youtube_dl/extractor/subtitles.py
@@ -7,10 +7,14 @@ from ..utils import (
 
 
 class SubtitlesInfoExtractor(InfoExtractor):
+    @property
+    def _have_to_download_any_subtitles(self):
+        return any([self._downloader.params.get('writesubtitles', False),
+                    self._downloader.params.get('writeautomaticsub')])
 
-    def _list_available_subtitles(self, video_id, webpage=None):
+    def _list_available_subtitles(self, video_id, webpage):
         """ outputs the available subtitles for the video """
-        sub_lang_list = self._get_available_subtitles(video_id)
+        sub_lang_list = self._get_available_subtitles(video_id, webpage)
         auto_captions_list = self._get_available_automatic_caption(video_id, webpage)
         sub_lang = ",".join(list(sub_lang_list.keys()))
         self.to_screen(u'%s: Available subtitles for video: %s' %
@@ -19,14 +23,18 @@ class SubtitlesInfoExtractor(InfoExtractor):
         self.to_screen(u'%s: Available automatic captions for video: %s' %
                        (video_id, auto_lang))
 
-    def extract_subtitles(self, video_id, video_webpage=None):
-        """ returns {sub_lang: sub} or {} if subtitles not found """
-        if self._downloader.params.get('writesubtitles', False) or self._downloader.params.get('allsubtitles', False):
-            available_subs_list = self._get_available_subtitles(video_id)
-        elif self._downloader.params.get('writeautomaticsub', False):
-            available_subs_list = self._get_available_automatic_caption(video_id, video_webpage)
-        else:
+    def extract_subtitles(self, video_id, webpage):
+        """
+        returns {sub_lang: sub} ,{} if subtitles not found or None if the
+        subtitles aren't requested.
+        """
+        if not self._have_to_download_any_subtitles:
             return None
+        available_subs_list = {}
+        if self._downloader.params.get('writeautomaticsub', False):
+            available_subs_list.update(self._get_available_automatic_caption(video_id, webpage))
+        if self._downloader.params.get('writesubtitles', False):
+            available_subs_list.update(self._get_available_subtitles(video_id, webpage))
 
         if not available_subs_list:  # error, it didn't get the available subtitles
             return {}
@@ -42,7 +50,7 @@ class SubtitlesInfoExtractor(InfoExtractor):
 
             sub_lang_list = {}
             for sub_lang in requested_langs:
-                if not sub_lang in available_subs_list:
+                if sub_lang not 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]
@@ -54,10 +62,13 @@ class SubtitlesInfoExtractor(InfoExtractor):
                 subtitles[sub_lang] = subtitle
         return subtitles
 
+    def _download_subtitle_url(self, sub_lang, url):
+        return self._download_webpage(url, None, note=False)
+
     def _request_subtitle_url(self, sub_lang, url):
         """ makes the http request for the subtitle """
         try:
-            sub = self._download_webpage(url, None, note=False)
+            sub = self._download_subtitle_url(sub_lang, url)
         except ExtractorError as err:
             self._downloader.report_warning(u'unable to download video subtitles for %s: %s' % (sub_lang, compat_str(err)))
             return
@@ -66,12 +77,16 @@ class SubtitlesInfoExtractor(InfoExtractor):
             return
         return sub
 
-    def _get_available_subtitles(self, video_id):
+    def _get_available_subtitles(self, video_id, webpage):
         """
         returns {sub_lang: url} or {} if not available
         Must be redefined by the subclasses
         """
-        pass
+
+        # By default, allow implementations to simply pass in the result
+        assert isinstance(webpage, dict), \
+            '_get_available_subtitles not implemented'
+        return webpage
 
     def _get_available_automatic_caption(self, video_id, webpage):
         """