Correct distinction between unicode and bytes (Closes: #257)

diff --git a/youtube_dl/__init__.py b/youtube_dl/__init__.py
index 2404e23..fef2afe 100755 (executable)
--- a/youtube_dl/__init__.py
+++ b/youtube_dl/__init__.py
@@ -290,6 +290,15 @@ def _orderedSet(iterable):
                        res.append(el)
        return res
 
+def _unescapeHTML(s):
+    """
+    @param s a string (of type unicode)
+    """
+    assert type(s) == type(u'')
+
+    htmlParser = HTMLParser.HTMLParser()
+    return htmlParser.unescape(s)
+
 class DownloadError(Exception):
        """Download Error exception.
 
@@ -1590,8 +1599,6 @@ class DailymotionIE(InfoExtractor):
                self._downloader.to_screen(u'[dailymotion] %s: Extracting information' % video_id)
 
        def _real_extract(self, url):
-               htmlParser = HTMLParser.HTMLParser()
-               
                # Extract id and simplified title from URL
                mobj = re.match(self._VALID_URL, url)
                if mobj is None:
@@ -1635,7 +1642,7 @@ class DailymotionIE(InfoExtractor):
                if mobj is None:
                        self._downloader.trouble(u'ERROR: unable to extract title')
                        return
-               video_title = htmlParser.unescape(mobj.group('title')).decode('utf-8')
+               video_title = _unescapeHTML(mobj.group('title').decode('utf-8'))
                video_title = sanitize_title(video_title)
                simple_title = _simplify_title(video_title)