X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=youtube_dl%2F__init__.py;h=dc7ec136fcbd27957633ccf037bad6e4e136cb43;hb=7a8501e307ec1283aeacb03b471b5509b8c92854;hp=3b9e2d70e6da720b53f4c37b6815727c37721338;hpb=a67bdc34fa3e524a7168ab477d28aaf54a051956;p=youtube-dl diff --git a/youtube_dl/__init__.py b/youtube_dl/__init__.py index 3b9e2d70e..dc7ec136f 100755 --- a/youtube_dl/__init__.py +++ b/youtube_dl/__init__.py @@ -15,6 +15,7 @@ __authors__ = ( 'Kevin Ngo', 'Ori Avtalion', 'shizeeg', + 'Filippo Valsorda', ) __license__ = 'Public Domain' @@ -66,11 +67,6 @@ try: except ImportError: from cgi import parse_qs -try: - import lxml.etree -except ImportError: - pass # Handled below - try: import xml.etree.ElementTree except ImportError: # Python<2.5: Not officially supported, but let it slip @@ -197,6 +193,72 @@ except ImportError: # Python <2.6, use trivialjson (https://github.com/phihag/tr raise ValueError('Extra data at end of input (index ' + str(i) + ' of ' + repr(s) + ': ' + repr(s[i:]) + ')') return res + +class IDParser(HTMLParser.HTMLParser): + """Modified HTMLParser that isolates a tag with the specified id""" + def __init__(self, id): + self.id = id + self.result = None + self.started = False + self.depth = {} + self.html = None + self.watch_startpos = False + HTMLParser.HTMLParser.__init__(self) + + def loads(self, html): + self.html = html + self.feed(html) + self.close() + + def handle_starttag(self, tag, attrs): + attrs = dict(attrs) + if self.started: + self.find_startpos(None) + if 'id' in attrs and attrs['id'] == self.id: + self.result = [tag] + self.started = True + self.watch_startpos = True + if self.started: + if not tag in self.depth: self.depth[tag] = 0 + self.depth[tag] += 1 + + def handle_endtag(self, tag): + if self.started: + if tag in self.depth: self.depth[tag] -= 1 + if self.depth[self.result[0]] == 0: + self.started = False + self.result.append(self.getpos()) + + def find_startpos(self, x): + """Needed to put the start position of the result (self.result[1]) + after the opening tag with the requested id""" + if self.watch_startpos: + self.watch_startpos = False + self.result.append(self.getpos()) + handle_entityref = handle_charref = handle_data = handle_comment = \ + handle_decl = handle_pi = unknown_decl = find_startpos + + def get_result(self): + if self.result == None: return None + if len(self.result) != 3: return None + lines = self.html.split('\n') + lines = lines[self.result[1][0]-1:self.result[2][0]] + lines[0] = lines[0][self.result[1][1]:] + if len(lines) == 1: + lines[-1] = lines[-1][:self.result[2][1]-self.result[1][1]] + lines[-1] = lines[-1][:self.result[2][1]] + return '\n'.join(lines).strip() + +def get_element_by_id(id, html): + """Return the content of the tag with the specified id in the passed HTML document""" + parser = IDParser(id) + try: + parser.loads(html) + except HTMLParser.HTMLParseError: + pass + return parser.get_result() + + def preferredencoding(): """Get preferred encoding. @@ -241,9 +303,21 @@ def htmlentity_transform(matchobj): return (u'&%s;' % entity) +def clean_html(html): + """Clean an HTML snippet into a readable string""" + # Newline vs
+ html = html.replace('\n', ' ') + html = re.sub('\s*<\s*br\s*/?\s*>\s*', '\n', html) + # Strip html tags + html = re.sub('<.*?>', '', html) + # Replace html entities + html = _unescapeHTML(html) + return html + + def sanitize_title(utitle): """Sanitizes a video title so it could be used as part of a filename.""" - utitle = re.sub(ur'(?u)&(.+?);', htmlentity_transform, utitle) + utitle = _unescapeHTML(utitle) return utitle.replace(unicode(os.sep), u'%') @@ -300,8 +374,8 @@ def _unescapeHTML(s): """ assert type(s) == type(u'') - htmlParser = HTMLParser.HTMLParser() - return htmlParser.unescape(s) + result = re.sub(ur'(?u)&(.+?);', htmlentity_transform, s) + return result def _encodeFilename(s): """ @@ -490,6 +564,8 @@ class FileDownloader(object): updatetime: Use the Last-modified header to set output file timestamps. writedescription: Write the video description to a .description file writeinfojson: Write the video description to a .info.json file + writesubtitles: Write the video subtitles to a .srt file + subtitleslang: Language of the subtitles to download """ params = None @@ -681,6 +757,10 @@ class FileDownloader(object): """ Report that the description file is being written """ self.to_screen(u'[info] Writing video description to: ' + descfn) + def report_writesubtitles(self, srtfn): + """ Report that the subtitles file is being written """ + self.to_screen(u'[info] Writing video subtitles to: ' + srtfn) + def report_writeinfojson(self, infofn): """ Report that the metadata file has been written """ self.to_screen(u'[info] Video description metadata as JSON to: ' + infofn) @@ -808,6 +888,21 @@ class FileDownloader(object): except (OSError, IOError): self.trouble(u'ERROR: Cannot write description file ' + descfn) return + + if self.params.get('writesubtitles', False) and 'subtitles' in info_dict and info_dict['subtitles']: + # subtitles download errors are already managed as troubles in relevant IE + # that way it will silently go on when used with unsupporting IE + try: + srtfn = filename.rsplit('.', 1)[0] + u'.srt' + self.report_writesubtitles(srtfn) + srtfile = open(_encodeFilename(srtfn), 'wb') + try: + srtfile.write(info_dict['subtitles'].encode('utf-8')) + finally: + srtfile.close() + except (OSError, IOError): + self.trouble(u'ERROR: Cannot write subtitles file ' + descfn) + return if self.params.get('writeinfojson', False): infofn = filename + u'.info.json' @@ -1206,6 +1301,10 @@ class YoutubeIE(InfoExtractor): """Report attempt to download video info webpage.""" self._downloader.to_screen(u'[youtube] %s: Downloading video info webpage' % video_id) + def report_video_subtitles_download(self, video_id): + """Report attempt to download video info webpage.""" + self._downloader.to_screen(u'[youtube] %s: Downloading video subtitles' % video_id) + def report_information_extraction(self, video_id): """Report attempt to extract video information.""" self._downloader.to_screen(u'[youtube] %s: Extracting video information' % video_id) @@ -1218,6 +1317,23 @@ class YoutubeIE(InfoExtractor): """Indicate the download will use the RTMP protocol.""" self._downloader.to_screen(u'[youtube] RTMP download detected') + def _closed_captions_xml_to_srt(self, xml_string): + srt = '' + texts = re.findall(r'([^<]+)', xml_string, re.MULTILINE) + # TODO parse xml instead of regex + for n, (start, dur_tag, dur, caption) in enumerate(texts): + if not dur: dur = '4' + start = float(start) + end = start + float(dur) + start = "%02i:%02i:%02i,%03i" %(start/(60*60), start/60%60, start%60, start%1*1000) + end = "%02i:%02i:%02i,%03i" %(end/(60*60), end/60%60, end%60, end%1*1000) + caption = _unescapeHTML(caption) + caption = _unescapeHTML(caption) # double cycle, inentional + srt += str(n) + '\n' + srt += start + ' --> ' + end + '\n' + srt += caption + '\n\n' + return srt + def _print_formats(self, formats): print 'Available formats:' for x in formats: @@ -1377,18 +1493,40 @@ class YoutubeIE(InfoExtractor): pass # description - try: - lxml.etree - except NameError: - video_description = u'No description available.' - mobj = re.search(r'', video_webpage) - if mobj is not None: - video_description = mobj.group(1).decode('utf-8') - else: - html_parser = lxml.etree.HTMLParser(encoding='utf-8') - vwebpage_doc = lxml.etree.parse(StringIO.StringIO(video_webpage), html_parser) - video_description = u''.join(vwebpage_doc.xpath('id("eow-description")//text()')) - # TODO use another parser + video_description = get_element_by_id("eow-description", video_webpage) + if video_description: video_description = clean_html(video_description.decode('utf8')) + else: video_description = '' + + # closed captions + video_subtitles = None + if self._downloader.params.get('writesubtitles', False): + self.report_video_subtitles_download(video_id) + request = urllib2.Request('http://video.google.com/timedtext?hl=en&type=list&v=%s' % video_id) + try: + srt_list = urllib2.urlopen(request).read() + except (urllib2.URLError, httplib.HTTPException, socket.error), err: + self._downloader.trouble(u'WARNING: unable to download video subtitles: %s' % str(err)) + else: + srt_lang_list = re.findall(r'lang_code="([\w\-]+)"', srt_list) + if srt_lang_list: + if self._downloader.params.get('subtitleslang', False): + srt_lang = self._downloader.params.get('subtitleslang') + elif 'en' in srt_lang_list: + srt_lang = 'en' + else: + srt_lang = srt_lang_list[0] + if not srt_lang in srt_lang_list: + self._downloader.trouble(u'WARNING: no closed captions found in the specified language') + else: + request = urllib2.Request('http://video.google.com/timedtext?hl=en&lang=%s&v=%s' % (srt_lang, video_id)) + try: + srt_xml = urllib2.urlopen(request).read() + except (urllib2.URLError, httplib.HTTPException, socket.error), err: + self._downloader.trouble(u'WARNING: unable to download video subtitles: %s' % str(err)) + else: + video_subtitles = self._closed_captions_xml_to_srt(srt_xml.decode('utf-8')) + else: + self._downloader.trouble(u'WARNING: video has no closed captions') # token video_token = urllib.unquote_plus(video_info['token'][0]) @@ -1461,6 +1599,7 @@ class YoutubeIE(InfoExtractor): 'thumbnail': video_thumbnail.decode('utf-8'), 'description': video_description, 'player_url': player_url, + 'subtitles': video_subtitles }) except UnavailableVideoError, err: self._downloader.trouble(u'\nERROR: unable to download video') @@ -2007,7 +2146,7 @@ class YahooIE(InfoExtractor): self._downloader.trouble(u'ERROR: Unable to extract media URL') return video_url = urllib.unquote(mobj.group(1) + mobj.group(2)).decode('utf-8') - video_url = re.sub(r'(?u)&(.+?);', htmlentity_transform, video_url) + video_url = _unescapeHTML(video_url) try: # Process video information @@ -2090,18 +2229,9 @@ class VimeoIE(InfoExtractor): video_thumbnail = config["video"]["thumbnail"] # Extract video description - try: - lxml.etree - except NameError: - video_description = u'No description available.' - mobj = re.search(r'', webpage, re.MULTILINE) - if mobj is not None: - video_description = mobj.group(1) - else: - html_parser = lxml.etree.HTMLParser() - vwebpage_doc = lxml.etree.parse(StringIO.StringIO(webpage), html_parser) - video_description = u''.join(vwebpage_doc.xpath('id("description")//text()')).strip() - # TODO use another parser + video_description = get_element_by_id("description", webpage) + if video_description: video_description = clean_html(video_description.decode('utf8')) + else: video_description = '' # Extract upload date video_upload_date = u'NA' @@ -3268,8 +3398,6 @@ class EscapistIE(InfoExtractor): self._downloader.to_screen(u'[escapist] %s: Downloading configuration' % showName) def _real_extract(self, url): - htmlParser = HTMLParser.HTMLParser() - mobj = re.match(self._VALID_URL, url) if mobj is None: self._downloader.trouble(u'ERROR: invalid URL: %s' % url) @@ -3285,11 +3413,11 @@ class EscapistIE(InfoExtractor): return descMatch = re.search('([^<]+)', coursepage) if m: - info['title'] = unescapeHTML(m.group(1)) + info['title'] = _unescapeHTML(m.group(1)) else: info['title'] = info['id'] info['stitle'] = _simplify_title(info['title']) m = re.search('([^<]+)', coursepage) if m: - info['description'] = unescapeHTML(m.group(1)) + info['description'] = _unescapeHTML(m.group(1)) links = _orderedSet(re.findall('', coursepage)) info['list'] = [ { 'type': 'reference', - 'url': 'http://openclassroom.stanford.edu/MainFolder/' + unescapeHTML(vpage), + 'url': 'http://openclassroom.stanford.edu/MainFolder/' + _unescapeHTML(vpage), } for vpage in links] @@ -3872,8 +3990,6 @@ class StanfordOpenClassroomIE(InfoExtractor): assert entry['type'] == 'reference' self.extract(entry['url']) else: # Root page - unescapeHTML = HTMLParser.HTMLParser().unescape - info = { 'id': 'Stanford OpenClassroom', 'type': 'playlist', @@ -3894,7 +4010,7 @@ class StanfordOpenClassroomIE(InfoExtractor): info['list'] = [ { 'type': 'reference', - 'url': 'http://openclassroom.stanford.edu/MainFolder/' + unescapeHTML(cpage), + 'url': 'http://openclassroom.stanford.edu/MainFolder/' + _unescapeHTML(cpage), } for cpage in links] @@ -4319,6 +4435,12 @@ def parseOpts(): action='store', dest='format_limit', metavar='FORMAT', help='highest quality format to download') video_format.add_option('-F', '--list-formats', action='store_true', dest='listformats', help='list all available formats (currently youtube only)') + video_format.add_option('--write-srt', + action='store_true', dest='writesubtitles', + help='write video closed captions to a .srt file (currently youtube only)', default=False) + video_format.add_option('--srt-lang', + action='store', dest='subtitleslang', metavar='LANG', + help='language of the closed captions to download (optional) use IETF language tags like \'en\'') verbosity.add_option('-q', '--quiet', @@ -4583,6 +4705,8 @@ def _real_main(): 'updatetime': opts.updatetime, 'writedescription': opts.writedescription, 'writeinfojson': opts.writeinfojson, + 'writesubtitles': opts.writesubtitles, + 'subtitleslang': opts.subtitleslang, 'matchtitle': opts.matchtitle, 'rejecttitle': opts.rejecttitle, 'max_downloads': opts.max_downloads,