[youtube] Simplify cache_dir code (#1529)

[youtube-dl] / youtube_dl / extractor / youtube.py

diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index 89e3d0f743ab8d85c46757b6df46971b52b449d5..9ca29a043f677a9d020c9aa3bde1b008ebadf6d2 100644 (file)
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -27,6 +27,7 @@ from ..utils import (
     compat_str,
 
     clean_html,
+    get_cachedir,
     get_element_by_id,
     ExtractorError,
     unescapeHTML,
@@ -421,8 +422,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
         # Read from filesystem cache
         func_id = '%s_%s_%d' % (player_type, player_id, slen)
         assert os.path.basename(func_id) == func_id
-        cache_dir = self._downloader.params.get('cachedir',
-                                                u'~/.youtube-dl/cache')
+        cache_dir = get_cachedir(self._downloader.params)
 
         cache_enabled = cache_dir is not None
         if cache_enabled:
@@ -1087,7 +1087,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor, SubtitlesInfoExtractor):
         elif len(s) == 83:
             return s[80:63:-1] + s[0] + s[62:0:-1] + s[63]
         elif len(s) == 82:
-            return s[80:73:-1] + s[81] + s[72:54:-1] + s[2] + s[53:43:-1] + s[0] + s[42:2:-1] + s[43] + s[1] + s[54]
+            return s[12] + s[79:12:-1] + s[80] + s[11::-1]
         elif len(s) == 81:
             return s[56] + s[79:56:-1] + s[41] + s[55:41:-1] + s[80] + s[40:34:-1] + s[0] + s[33:29:-1] + s[34] + s[28:9:-1] + s[29] + s[8:0:-1] + s[9]
         elif len(s) == 80: