From 6f21f686293ff94889978c1f39256029d2409d1b Mon Sep 17 00:00:00 2001 From: Ricardo Garcia Date: Thu, 23 Apr 2009 22:20:06 +0200 Subject: [PATCH] Download videos after extracting information This is achieved by letting the InfoExtractors instruct its downloader to process the information dictionary just after extracting the information. As a consequence, some code is simplified too. --- youtube-dl | 99 ++++++++++++++++++++++++------------------------------ 1 file changed, 44 insertions(+), 55 deletions(-) diff --git a/youtube-dl b/youtube-dl index 034da35f5..545bcb653 100755 --- a/youtube-dl +++ b/youtube-dl @@ -301,21 +301,8 @@ class FileDownloader(object): # Suitable InfoExtractor found suitable_found = True - # Extract information from URL - all_results = ie.extract(url) - results = [x for x in all_results if x is not None] - - # See if there were problems extracting any information - if len(results) != len(all_results): - self.trouble() - - # Two results could go to the same file - if len(results) > 1 and self.fixed_template(): - raise SameFileError(self.params['outtmpl']) - - # Process each result - for result in results: - self.process_info(result) + # Extract information from URL and process it + ie.extract(url) # Suitable InfoExtractor had been found; go to next URL break @@ -508,7 +495,7 @@ class YoutubeIE(InfoExtractor): else: raise netrc.NetrcParseError('No authenticators for %s' % self._NETRC_MACHINE) except (IOError, netrc.NetrcParseError), err: - self._downloader.trouble(u'WARNING: parsing .netrc: %s' % str(err)) + self._downloader.to_stderr(u'WARNING: parsing .netrc: %s' % str(err)) return # Set language @@ -517,7 +504,7 @@ class YoutubeIE(InfoExtractor): self.report_lang() urllib2.urlopen(request).read() except (urllib2.URLError, httplib.HTTPException, socket.error), err: - self._downloader.trouble(u'WARNING: unable to set language: %s' % str(err)) + self._downloader.to_stderr(u'WARNING: unable to set language: %s' % str(err)) return # No authentication to be performed @@ -537,10 +524,10 @@ class YoutubeIE(InfoExtractor): self.report_login() login_results = urllib2.urlopen(request).read() if re.search(r'(?i)]* name="loginForm"', login_results) is not None: - self._downloader.trouble(u'WARNING: unable to log in: bad username or password') + self._downloader.to_stderr(u'WARNING: unable to log in: bad username or password') return except (urllib2.URLError, httplib.HTTPException, socket.error), err: - self._downloader.trouble(u'WARNING: unable to log in: %s' % str(err)) + self._downloader.to_stderr(u'WARNING: unable to log in: %s' % str(err)) return # Confirm age @@ -561,7 +548,7 @@ class YoutubeIE(InfoExtractor): mobj = re.match(self._VALID_URL, url) if mobj is None: self._downloader.trouble(u'ERROR: invalid URL: %s' % url) - return [None] + return video_id = mobj.group(2) # Downloader parameters @@ -587,14 +574,14 @@ class YoutubeIE(InfoExtractor): video_webpage = urllib2.urlopen(request).read() except (urllib2.URLError, httplib.HTTPException, socket.error), err: self._downloader.trouble(u'ERROR: unable to download video webpage: %s' % str(err)) - return [None] + return self.report_information_extraction(video_id) # "t" param mobj = re.search(r', "t": "([^"]+)"', video_webpage) if mobj is None: self._downloader.trouble(u'ERROR: unable to extract "t" parameter') - return [None] + return video_real_url = 'http://www.youtube.com/get_video?video_id=%s&t=%s&el=detailpage&ps=' % (video_id, mobj.group(1)) if format_param is not None: video_real_url = '%s&fmt=%s' % (video_real_url, format_param) @@ -604,14 +591,14 @@ class YoutubeIE(InfoExtractor): mobj = re.search(r"var watchUsername = '([^']+)';", video_webpage) if mobj is None: self._downloader.trouble(u'ERROR: unable to extract uploader nickname') - return [None] + return video_uploader = mobj.group(1) # title mobj = re.search(r'(?im)YouTube - ([^<]*)', video_webpage) if mobj is None: self._downloader.trouble(u'ERROR: unable to extract video title') - return [None] + return video_title = mobj.group(1).decode('utf-8') video_title = re.sub(ur'(?u)&(.+?);', self.htmlentity_transform, video_title) video_title = video_title.replace(os.sep, u'%') @@ -621,14 +608,14 @@ class YoutubeIE(InfoExtractor): simple_title = simple_title.strip(ur'_') # Process video information - return [{ + self._downloader.process_info({ 'id': video_id.decode('utf-8'), 'url': video_real_url.decode('utf-8'), 'uploader': video_uploader.decode('utf-8'), 'title': video_title, 'stitle': simple_title, 'ext': video_extension.decode('utf-8'), - }] + }) class MetacafeIE(InfoExtractor): """Information Extractor for metacafe.com.""" @@ -689,14 +676,15 @@ class MetacafeIE(InfoExtractor): mobj = re.match(self._VALID_URL, url) if mobj is None: self._downloader.trouble(u'ERROR: invalid URL: %s' % url) - return [None] + return 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)) + self._youtube_ie.extract('http://www.youtube.com/watch?v=%s' % mobj2.group(1)) + return simple_title = mobj.group(2).decode('utf-8') video_extension = 'flv' @@ -708,20 +696,20 @@ class MetacafeIE(InfoExtractor): webpage = urllib2.urlopen(request).read() except (urllib2.URLError, httplib.HTTPException, socket.error), err: self._downloader.trouble(u'ERROR: unable retrieve video webpage: %s' % str(err)) - return [None] + return # 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._downloader.trouble(u'ERROR: unable to extract media URL') - return [None] + return mediaURL = mobj.group(1).replace('\\', '') mobj = re.search(r'(?m)"gdaKey":"(.*?)"', webpage) if mobj is None: self._downloader.trouble(u'ERROR: unable to extract gdaKey') - return [None] + return gdaKey = mobj.group(1) video_url = '%s?__gda__=%s' % (mediaURL, gdaKey) @@ -729,24 +717,24 @@ class MetacafeIE(InfoExtractor): mobj = re.search(r'(?im)(.*) - Video', webpage) if mobj is None: self._downloader.trouble(u'ERROR: unable to extract title') - return [None] + return video_title = mobj.group(1).decode('utf-8') mobj = re.search(r'(?m)
  • .*?Submitter:
    (.*?)
    • ', webpage) if mobj is None: self._downloader.trouble(u'ERROR: unable to extract uploader nickname') - return [None] + return video_uploader = re.sub(r'<.*?>', '', mobj.group(1)) - # Return information - return [{ + # Process video information + self._downloader.process_info({ 'id': video_id.decode('utf-8'), 'url': video_url.decode('utf-8'), 'uploader': video_uploader.decode('utf-8'), 'title': video_title, 'stitle': simple_title, 'ext': video_extension.decode('utf-8'), - }] + }) class YoutubeSearchIE(InfoExtractor): @@ -777,26 +765,30 @@ class YoutubeSearchIE(InfoExtractor): mobj = re.match(self._VALID_QUERY, query) if mobj is None: self._downloader.trouble(u'ERROR: invalid search query "%s"' % query) - return [None] + return prefix, query = query.split(':') prefix = prefix[8:] if prefix == '': - return self._download_n_results(query, 1) + self._download_n_results(query, 1) + return elif prefix == 'all': - return self._download_n_results(query, self._max_youtube_results) + self._download_n_results(query, self._max_youtube_results) + return else: try: n = int(prefix) if n <= 0: self._downloader.trouble(u'ERROR: invalid download number %s for query "%s"' % (n, query)) - return [None] + return elif n > self._max_youtube_results: - self._downloader.trouble(u'WARNING: ytsearch returns max %i results (you requested %i)' % (self._max_youtube_results, n)) + self._downloader.to_stderr(u'WARNING: ytsearch returns max %i results (you requested %i)' % (self._max_youtube_results, n)) n = self._max_youtube_results - return self._download_n_results(query, n) + self._download_n_results(query, n) + return except ValueError: # parsing prefix as int fails - return self._download_n_results(query, 1) + self._download_n_results(query, 1) + return def _download_n_results(self, query, n): """Downloads a specified number of results for a query""" @@ -813,7 +805,7 @@ class YoutubeSearchIE(InfoExtractor): page = urllib2.urlopen(request).read() except (urllib2.URLError, httplib.HTTPException, socket.error), err: self._downloader.trouble(u'ERROR: unable to download webpage: %s' % str(err)) - return [None] + return # Extract video identifiers for mobj in re.finditer(self._VIDEO_INDICATOR, page): @@ -823,16 +815,14 @@ class YoutubeSearchIE(InfoExtractor): already_seen.add(video_id) if len(video_ids) == n: # Specified n videos reached - information = [] for id in video_ids: - information.extend(self._youtube_ie.extract('http://www.youtube.com/watch?v=%s' % id)) - return information + self._youtube_ie.extract('http://www.youtube.com/watch?v=%s' % id) + return if self._MORE_PAGES_INDICATOR not in page: - information = [] for id in video_ids: - information.extend(self._youtube_ie.extract('http://www.youtube.com/watch?v=%s' % id)) - return information + self._youtube_ie.extract('http://www.youtube.com/watch?v=%s' % id) + return pagenum = pagenum + 1 @@ -865,7 +855,7 @@ class YoutubePlaylistIE(InfoExtractor): mobj = re.match(self._VALID_URL, url) if mobj is None: self._downloader.trouble(u'ERROR: invalid url: %s' % url) - return [None] + return # Download playlist pages playlist_id = mobj.group(1) @@ -879,7 +869,7 @@ class YoutubePlaylistIE(InfoExtractor): page = urllib2.urlopen(request).read() except (urllib2.URLError, httplib.HTTPException, socket.error), err: self._downloader.trouble(u'ERROR: unable to download webpage: %s' % str(err)) - return [None] + return # Extract video identifiers ids_in_page = [] @@ -892,10 +882,9 @@ class YoutubePlaylistIE(InfoExtractor): break pagenum = pagenum + 1 - information = [] for id in video_ids: - information.extend(self._youtube_ie.extract('http://www.youtube.com/watch?v=%s' % id)) - return information + self._youtube_ie.extract('http://www.youtube.com/watch?v=%s' % id) + return class PostProcessor(object): """Post Processor class.