Add metacafe.com support and minor changse

youtube-dl

@@ -253,7 +253,6 @@ class FileDownloader(object):
 					raise SameFileError(self._params['outtmpl'])
 
 				for result in results:
-
 					# Forced printings
 					if self._params.get('forcetitle', False):
 						print result['title']
@@ -363,7 +362,7 @@ class InfoExtractor(object):
 	@staticmethod
 	def suitable(url):
 		"""Receives a URL and returns True if suitable for this IE."""
-		return True
+		return False
 
 	def initialize(self):
 		"""Initializes an instance (authentication, etc)."""
@@ -400,10 +399,15 @@ class InfoExtractor(object):
 class YoutubeIE(InfoExtractor):
 	"""Information extractor for youtube.com."""
 
+	_VALID_URL = r'^((?:http://)?(?:\w+\.)?youtube\.com/(?:(?:v/)|(?:(?:watch(?:\.php)?)?\?(?:.+&)?v=)))?([0-9A-Za-z_-]+)(?(1).+)?$'
 	_LOGIN_URL = 'http://www.youtube.com/login?next=/'
 	_AGE_URL = 'http://www.youtube.com/verify_age?next_url=/'
 	_NETRC_MACHINE = 'youtube'
 
+	@staticmethod
+	def suitable(url):
+		return (re.match(YoutubeIE._VALID_URL, url) is not None)
+
 	def report_login(self):
 		"""Report attempt to log in."""
 		self.to_stdout('[youtube] Logging in')
@@ -486,7 +490,7 @@ class YoutubeIE(InfoExtractor):
 
 	def _real_extract(self, url):
 		# Extract video id from URL
-		mobj = re.match(r'^((?:http://)?(?:\w+\.)?youtube\.com/(?:(?:v/)|(?:(?:watch(?:\.php)?)?\?(?:.+&)?v=)))?([0-9A-Za-z_-]+)(?(1).+)?$', url)
+		mobj = re.match(self._VALID_URL, url)
 		if mobj is None:
 			self.to_stderr('ERROR: invalid URL: %s' % url)
 			return [None]
@@ -554,6 +558,124 @@ class YoutubeIE(InfoExtractor):
 			'ext':		video_extension,
 			}]
 
+class MetacafeIE(InfoExtractor):
+	"""Information Extractor for metacafe.com."""
+
+	_VALID_URL = r'(?:http://)?(?:www\.)?metacafe\.com/watch/([^/]+)/([^/]+)/.*'
+	_DISCLAIMER = 'http://www.metacafe.com/disclaimer'
+	_youtube_ie = None
+
+	def __init__(self, youtube_ie, downloader=None):
+		InfoExtractor.__init__(self, downloader)
+		self._youtube_ie = youtube_ie
+
+	@staticmethod
+	def suitable(url):
+		return (re.match(MetacafeIE._VALID_URL, url) is not None)
+
+	def report_disclaimer(self):
+		"""Report disclaimer retrieval."""
+		self.to_stdout('[metacafe] Retrieving disclaimer')
+
+	def report_age_confirmation(self):
+		"""Report attempt to confirm age."""
+		self.to_stdout('[metacafe] Confirming age')
+	
+	def report_download_webpage(self, video_id):
+		"""Report webpage download."""
+		self.to_stdout('[metacafe] %s: Downloading webpage' % video_id)
+	
+	def report_extraction(self, video_id):
+		"""Report information extraction."""
+		self.to_stdout('[metacafe] %s: Extracting information' % video_id)
+
+	def _real_initialize(self):
+		# Retrieve disclaimer
+		request = urllib2.Request(self._DISCLAIMER, None, std_headers)
+		try:
+			self.report_disclaimer()
+			disclaimer = urllib2.urlopen(request).read()
+		except (urllib2.URLError, httplib.HTTPException, socket.error), err:
+			self.to_stderr('ERROR: unable to retrieve disclaimer: %s' % str(err))
+			return
+
+		# Confirm age
+		disclaimer_form = {
+			'allowAdultContent': '1',
+			'submit': "Continue - I'm over 18",
+			}
+		request = urllib2.Request('http://www.metacafe.com/watch/', urllib.urlencode(disclaimer_form), std_headers)
+		try:
+			self.report_age_confirmation()
+			disclaimer = urllib2.urlopen(request).read()
+		except (urllib2.URLError, httplib.HTTPException, socket.error), err:
+			self.to_stderr('ERROR: unable to confirm age: %s' % str(err))
+			return
+	
+	def _real_extract(self, url):
+		# Extract id and simplified title from URL
+		mobj = re.match(self._VALID_URL, url)
+		if mobj is None:
+			self.to_stderr('ERROR: invalid URL: %s' % url)
+			return [None]
+
+		video_id = mobj.group(1)
+
+		# Check if video comes from YouTube
+		mobj2 = re.match(r'^yt-(.*)$', video_id)
+		if mobj2 is not None:
+			return self._youtube_ie.extract('http://www.youtube.com/watch?v=%s' % mobj2.group(1))
+
+		simple_title = mobj.group(2).decode('utf-8')
+		video_extension = 'flv'
+
+		# Retrieve video webpage to extract further information
+		request = urllib2.Request('http://www.metacafe.com/watch/%s/' % video_id)
+		try:
+			self.report_download_webpage(video_id)
+			webpage = urllib2.urlopen(request).read()
+		except (urllib2.URLError, httplib.HTTPException, socket.error), err:
+			self.to_stderr('ERROR: unable retrieve video webpage: %s' % str(err))
+			return [None]
+
+		# Extract URL, uploader and title from webpage
+		self.report_extraction(video_id)
+		mobj = re.search(r'(?m)"mediaURL":"(http.*?\.flv)"', webpage)
+		if mobj is None:
+			self.to_stderr('ERROR: unable to extract media URL')
+			return [None]
+		mediaURL = mobj.group(1).replace('\\', '')
+
+		mobj = re.search(r'(?m)"gdaKey":"(.*?)"', webpage)
+		if mobj is None:
+			self.to_stderr('ERROR: unable to extract gdaKey')
+			return [None]
+		gdaKey = mobj.group(1)
+
+		video_url = '%s?__gda__=%s' % (mediaURL, gdaKey)
+
+		mobj = re.search(r'(?im)<meta name="title" content="Metacafe - ([^"]+)"', webpage)
+		if mobj is None:
+			self.to_stderr('ERROR: unable to extract title')
+			return [None]
+		video_title = mobj.group(1).decode('utf-8')
+
+		mobj = re.search(r'(?m)<li id="ChnlUsr">.*?Submitter:<br />(.*?)</li>', webpage)
+		if mobj is None:
+			self.to_stderr('ERROR: unable to extract uploader nickname')
+			return [None]
+		video_uploader = re.sub(r'<.*?>', '', mobj.group(1))
+
+		# Return information
+		return [{
+			'id':		video_id,
+			'url':		video_url,
+			'uploader':	video_uploader,
+			'title':	video_title,
+			'stitle':	simple_title,
+			'ext':		video_extension,
+			}]
+
 if __name__ == '__main__':
 	try:
 		# Modules needed only when running the main program
@@ -628,6 +750,7 @@ if __name__ == '__main__':
 
 		# Information extractors
 		youtube_ie = YoutubeIE()
+		metacafe_ie = MetacafeIE(youtube_ie)
 
 		# File downloader
 		fd = FileDownloader({
@@ -646,6 +769,7 @@ if __name__ == '__main__':
 			'ignoreerrors': opts.ignoreerrors,
 			'ratelimit': opts.ratelimit,
 			})
+		fd.add_info_extractor(metacafe_ie)
 		fd.add_info_extractor(youtube_ie)
 		retcode = fd.download(args)
 		sys.exit(retcode)