#!/usr/bin/env python# -*- coding: utf-8 -*-# Author: Ricardo Garcia Gonzalez# Author: Danny Colligan# License: Public domain codeimport htmlentitydefsimport httplibimport localeimport mathimport netrcimport osimport os.pathimport reimport socketimport stringimport sysimport timeimport urllibimport urllib2std_headers = { 'User-Agent': 'Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.0.8) Gecko/2009032609 Firefox/3.0.8', 'Accept-Charset': 'ISO-8859-1,utf-8;q=0.7,*;q=0.7', 'Accept': 'text/xml,application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5', 'Accept-Language': 'en-us,en;q=0.5',}simple_title_chars = string.ascii_letters.decode('ascii') + string.digits.decode('ascii')class DownloadError(Exception): """Download Error exception. This exception may be thrown by FileDownloader objects if they are not configured to continue on errors. They will contain the appropriate error message. """ passclass SameFileError(Exception): """Same File exception. This exception will be thrown by FileDownloader objects if they detect multiple files would have to be downloaded to the same file on disk. """ passclass PostProcessingError(Exception): """Post Processing exception. This exception may be raised by PostProcessor's .run() method to indicate an error in the postprocessing task. """ passclass UnavailableFormatError(Exception): """Unavailable Format exception. This exception will be thrown when a video is requested in a format that is not available for that video. """ passclass ContentTooShortError(Exception): """Content Too Short exception. This exception may be raised by FileDownloader objects when a file they download is too small for what the server announced first, indicating the connection was probably interrupted. """ # Both in bytes downloaded = None expected = None def __init__(self, downloaded, expected): self.downloaded = downloaded self.expected = expectedclass FileDownloader(object): """File Downloader class. File downloader objects are the ones responsible of downloading the actual video file and writing it to disk if the user has requested it, among some other tasks. In most cases there should be one per program. As, given a video URL, the downloader doesn't know how to extract all the needed information, task that InfoExtractors do, it has to pass the URL to one of them. For this, file downloader objects have a method that allows InfoExtractors to be registered in a given order. When it is passed a URL, the file downloader handles it to the first InfoExtractor it finds that reports being able to handle it. The InfoExtractor extracts all the information about the video or videos the URL refers to, and asks the FileDownloader to process the video information, possibly downloading the video. File downloaders accept a lot of parameters. In order not to saturate the object constructor with arguments, it receives a dictionary of options instead. These options are available through the params attribute for the InfoExtractors to use. The FileDownloader also registers itself as the downloader in charge for the InfoExtractors that are added to it, so this is a "mutual registration". Available options: username: Username for authentication purposes. password: Password for authentication purposes. usenetrc: Use netrc for authentication instead. quiet: Do not print messages to stdout. forceurl: Force printing final URL. forcetitle: Force printing title. simulate: Do not download the video files. format: Video format code. outtmpl: Template for output names. ignoreerrors: Do not stop on download errors. ratelimit: Download speed limit, in bytes/sec. nooverwrites: Prevent overwriting files. continuedl: Try to continue downloads if possible. """ params = None _ies = [] _pps = [] _download_retcode = None def __init__(self, params): """Create a FileDownloader object with the given options.""" self._ies = [] self._pps = [] self._download_retcode = 0 self.params = params @staticmethod def pmkdir(filename): """Create directory components in filename. Similar to Unix "mkdir -p".""" components = filename.split(os.sep) aggregate = [os.sep.join(components[0:x]) for x in xrange(1, len(components))] aggregate = ['%s%s' % (x, os.sep) for x in aggregate] # Finish names with separator for dir in aggregate: if not os.path.exists(dir): os.mkdir(dir) @staticmethod def format_bytes(bytes): if bytes is None: return 'N/A' if bytes == 0: exponent = 0 else: exponent = long(math.log(float(bytes), 1024.0)) suffix = 'bkMGTPEZY'[exponent] converted = float(bytes) / float(1024**exponent) return '%.2f%s' % (converted, suffix) @staticmethod def calc_percent(byte_counter, data_len): if data_len is None: return '---.-%' return '%6s' % ('%3.1f%%' % (float(byte_counter) / float(data_len) * 100.0)) @staticmethod def calc_eta(start, now, total, current): if total is None: return '--:--' dif = now - start if current == 0 or dif < 0.001: # One millisecond return '--:--' rate = float(current) / dif eta = long((float(total) - float(current)) / rate) (eta_mins, eta_secs) = divmod(eta, 60) if eta_mins > 99: return '--:--' return '%02d:%02d' % (eta_mins, eta_secs) @staticmethod def calc_speed(start, now, bytes): dif = now - start if bytes == 0 or dif < 0.001: # One millisecond return '%10s' % '---b/s' return '%10s' % ('%s/s' % FileDownloader.format_bytes(float(bytes) / dif)) @staticmethod def best_block_size(elapsed_time, bytes): new_min = max(bytes / 2.0, 1.0) new_max = min(max(bytes * 2.0, 1.0), 4194304) # Do not surpass 4 MB if elapsed_time < 0.001: return long(new_max) rate = bytes / elapsed_time if rate > new_max: return long(new_max) if rate < new_min: return long(new_min) return long(rate) @staticmethod def parse_bytes(bytestr): """Parse a string indicating a byte quantity into a long integer.""" matchobj = re.match(r'(?i)^(\d+(?:\.\d+)?)([kMGTPEZY]?)$', bytestr) if matchobj is None: return None number = float(matchobj.group(1)) multiplier = 1024.0 ** 'bkmgtpezy'.index(matchobj.group(2).lower()) return long(round(number * multiplier)) @staticmethod def verify_url(url): """Verify a URL is valid and data could be downloaded.""" request = urllib2.Request(url, None, std_headers) data = urllib2.urlopen(request) data.read(1) data.close() def add_info_extractor(self, ie): """Add an InfoExtractor object to the end of the list.""" self._ies.append(ie) ie.set_downloader(self) def add_post_processor(self, pp): """Add a PostProcessor object to the end of the chain.""" self._pps.append(pp) pp.set_downloader(self) def to_stdout(self, message, skip_eol=False): """Print message to stdout if not in quiet mode.""" if not self.params.get('quiet', False): print (u'%s%s' % (message, [u'\n', u''][skip_eol])).encode(locale.getpreferredencoding()), sys.stdout.flush() def to_stderr(self, message): """Print message to stderr.""" print >>sys.stderr, message.encode(locale.getpreferredencoding()) def fixed_template(self): """Checks if the output template is fixed.""" return (re.search(ur'(?u)%\(.+?\)s', self.params['outtmpl']) is None) def trouble(self, message=None): """Determine action to take when a download problem appears. Depending on if the downloader has been configured to ignore download errors or not, this method may throw an exception or not when errors are found, after printing the message. """ if message is not None: self.to_stderr(message) if not self.params.get('ignoreerrors', False): raise DownloadError(message) self._download_retcode = 1 def slow_down(self, start_time, byte_counter): """Sleep if the download speed is over the rate limit.""" rate_limit = self.params.get('ratelimit', None) if rate_limit is None or byte_counter == 0: return now = time.time() elapsed = now - start_time if elapsed <= 0.0: return speed = float(byte_counter) / elapsed if speed > rate_limit: time.sleep((byte_counter - rate_limit * (now - start_time)) / rate_limit) def report_destination(self, filename): """Report destination filename.""" self.to_stdout(u'[download] Destination: %s' % filename) def report_progress(self, percent_str, data_len_str, speed_str, eta_str): """Report download progress.""" self.to_stdout(u'\r[download] %s of %s at %s ETA %s' % (percent_str, data_len_str, speed_str, eta_str), skip_eol=True) def report_resuming_byte(self, resume_len): """Report attemtp to resume at given byte.""" self.to_stdout(u'[download] Resuming download at byte %s' % resume_len) def report_file_already_downloaded(self, file_name): """Report file has already been fully downloaded.""" self.to_stdout(u'[download] %s has already been downloaded' % file_name) def report_unable_to_resume(self): """Report it was impossible to resume download.""" self.to_stdout(u'[download] Unable to resume') def report_finish(self): """Report download finished.""" self.to_stdout(u'') def process_info(self, info_dict): """Process a single dictionary returned by an InfoExtractor.""" # Do nothing else if in simulate mode if self.params.get('simulate', False): try: self.verify_url(info_dict['url']) except (OSError, IOError, urllib2.URLError, httplib.HTTPException, socket.error), err: raise UnavailableFormatError # Forced printings if self.params.get('forcetitle', False): print info_dict['title'].encode(locale.getpreferredencoding()) if self.params.get('forceurl', False): print info_dict['url'].encode(locale.getpreferredencoding()) return try: template_dict = dict(info_dict) template_dict['epoch'] = unicode(long(time.time())) filename = self.params['outtmpl'] % template_dict except (ValueError, KeyError), err: self.trouble('ERROR: invalid output template or system charset: %s' % str(err)) if self.params['nooverwrites'] and os.path.exists(filename): self.to_stderr(u'WARNING: file exists: %s; skipping' % filename) return try: self.pmkdir(filename) except (OSError, IOError), err: self.trouble('ERROR: unable to create directories: %s' % str(err)) return try: success = self._do_download(filename, info_dict['url']) except (OSError, IOError), err: raise UnavailableFormatError except (urllib2.URLError, httplib.HTTPException, socket.error), err: self.trouble('ERROR: unable to download video data: %s' % str(err)) return except (ContentTooShortError, ), err: self.trouble('ERROR: content too short (expected %s bytes and served %s)' % (err.expected, err.downloaded)) return if success: try: self.post_process(filename, info_dict) except (PostProcessingError), err: self.trouble('ERROR: postprocessing: %s' % str(err)) return def download(self, url_list): """Download a given list of URLs.""" if len(url_list) > 1 and self.fixed_template(): raise SameFileError(self.params['outtmpl']) for url in url_list: suitable_found = False for ie in self._ies: # Go to next InfoExtractor if not suitable if not ie.suitable(url): continue # Suitable InfoExtractor found suitable_found = True # Extract information from URL and process it ie.extract(url) # Suitable InfoExtractor had been found; go to next URL break if not suitable_found: self.trouble('ERROR: no suitable InfoExtractor: %s' % url) return self._download_retcode def post_process(self, filename, ie_info): """Run the postprocessing chain on the given file.""" info = dict(ie_info) info['filepath'] = filename for pp in self._pps: info = pp.run(info) if info is None: break def _do_download(self, filename, url): stream = None open_mode = 'ab' basic_request = urllib2.Request(url, None, std_headers) request = urllib2.Request(url, None, std_headers) # Attempt to resume download with "continuedl" option if os.path.isfile(filename): resume_len = os.path.getsize(filename) else: resume_len = 0 if self.params['continuedl'] and resume_len != 0: self.report_resuming_byte(resume_len) request.add_header('Range','bytes=%d-' % resume_len) # Establish connection try: data = urllib2.urlopen(request) except (urllib2.HTTPError, ), err: if err.code != 416: # 416 is 'Requested range not satisfiable' raise data = urllib2.urlopen(basic_request) content_length = data.info()['Content-Length'] if content_length is not None and long(content_length) == resume_len: self.report_file_already_downloaded(filename) return True else: self.report_unable_to_resume() open_mode = 'wb' data_len = data.info().get('Content-length', None) data_len_str = self.format_bytes(data_len) byte_counter = 0 block_size = 1024 start = time.time() while True: # Download and write before = time.time() data_block = data.read(block_size) after = time.time() data_block_len = len(data_block) if data_block_len == 0: break byte_counter += data_block_len # Open file just in time if stream is None: try: stream = open(filename, open_mode) self.report_destination(filename) except (OSError, IOError), err: self.trouble('ERROR: unable to open for writing: %s' % str(err)) return False stream.write(data_block) block_size = self.best_block_size(after - before, data_block_len) # Progress message percent_str = self.calc_percent(byte_counter, data_len) eta_str = self.calc_eta(start, time.time(), data_len, byte_counter) speed_str = self.calc_speed(start, time.time(), byte_counter) self.report_progress(percent_str, data_len_str, speed_str, eta_str) # Apply rate limit self.slow_down(start, byte_counter) self.report_finish() if data_len is not None and str(byte_counter) != data_len: raise ContentTooShortError(byte_counter, long(data_len)) return Trueclass InfoExtractor(object): """Information Extractor class. Information extractors are the classes that, given a URL, extract information from the video (or videos) the URL refers to. This information includes the real video URL, the video title and simplified title, author and others. The information is stored in a dictionary which is then passed to the FileDownloader. The FileDownloader processes this information possibly downloading the video to the file system, among other possible outcomes. The dictionaries must include the following fields: id: Video identifier. url: Final video URL. uploader: Nickname of the video uploader. title: Literal title. stitle: Simplified title. ext: Video filename extension. Subclasses of this one should re-define the _real_initialize() and _real_extract() methods, as well as the suitable() static method. Probably, they should also be instantiated and added to the main downloader. """ _ready = False _downloader = None def __init__(self, downloader=None): """Constructor. Receives an optional downloader.""" self._ready = False self.set_downloader(downloader) @staticmethod def suitable(url): """Receives a URL and returns True if suitable for this IE.""" return False def initialize(self): """Initializes an instance (authentication, etc).""" if not self._ready: self._real_initialize() self._ready = True def extract(self, url): """Extracts URL information and returns it in list of dicts.""" self.initialize() return self._real_extract(url) def set_downloader(self, downloader): """Sets the downloader for this IE.""" self._downloader = downloader def _real_initialize(self): """Real initialization process. Redefine in subclasses.""" pass def _real_extract(self, url): """Real extraction process. Redefine in subclasses.""" passclass YoutubeIE(InfoExtractor): """Information extractor for youtube.com.""" _VALID_URL = r'^((?:http://)?(?:\w+\.)?youtube\.com/(?:(?:v/)|(?:(?:watch(?:\.php)?)?\?(?:.+&)?v=)))?([0-9A-Za-z_-]+)(?(1).+)?$' _LANG_URL = r'http://uk.youtube.com/?hl=en&persist_hl=1&gl=US&persist_gl=1&opt_out_ackd=1' _LOGIN_URL = 'http://www.youtube.com/signup?next=/&gl=US&hl=en' _AGE_URL = 'http://www.youtube.com/verify_age?next_url=/&gl=US&hl=en' _NETRC_MACHINE = 'youtube' _available_formats = ['22', '35', '18', '5', '17', '13'] # listed in order of priority for -b flag _video_extensions = { '13': '3gp', '17': 'mp4', '18': 'mp4', '22': 'mp4', } @staticmethod def suitable(url): return (re.match(YoutubeIE._VALID_URL, url) is not None) @staticmethod def htmlentity_transform(matchobj): """Transforms an HTML entity to a Unicode character.""" entity = matchobj.group(1) # Known non-numeric HTML entity if entity in htmlentitydefs.name2codepoint: return unichr(htmlentitydefs.name2codepoint[entity]) # Unicode character mobj = re.match(ur'(?u)#(x?\d+)', entity) if mobj is not None: numstr = mobj.group(1) if numstr.startswith(u'x'): base = 16 numstr = u'0%s' % numstr else: base = 10 return unichr(long(numstr, base)) # Unknown entity in name, return its literal representation return (u'&%s;' % entity) def report_lang(self): """Report attempt to set language.""" self._downloader.to_stdout(u'[youtube] Setting language') def report_login(self): """Report attempt to log in.""" self._downloader.to_stdout(u'[youtube] Logging in') def report_age_confirmation(self): """Report attempt to confirm age.""" self._downloader.to_stdout(u'[youtube] Confirming age') def report_webpage_download(self, video_id): """Report attempt to download webpage.""" self._downloader.to_stdout(u'[youtube] %s: Downloading video webpage' % video_id) def report_information_extraction(self, video_id): """Report attempt to extract video information.""" self._downloader.to_stdout(u'[youtube] %s: Extracting video information' % video_id) def report_video_url(self, video_id, video_real_url): """Report extracted video URL.""" self._downloader.to_stdout(u'[youtube] %s: URL: %s' % (video_id, video_real_url)) def report_unavailable_format(self, video_id, format): """Report extracted video URL.""" self._downloader.to_stdout(u'[youtube] %s: Format %s not available' % (video_id, format)) def _real_initialize(self): if self._downloader is None: return username = None password = None downloader_params = self._downloader.params # Attempt to use provided username and password or .netrc data if downloader_params.get('username', None) is not None: username = downloader_params['username'] password = downloader_params['password'] elif downloader_params.get('usenetrc', False): try: info = netrc.netrc().authenticators(self._NETRC_MACHINE) if info is not None: username = info[0] password = info[2] else: raise netrc.NetrcParseError('No authenticators for %s' % self._NETRC_MACHINE) except (IOError, netrc.NetrcParseError), err: self._downloader.to_stderr(u'WARNING: parsing .netrc: %s' % str(err)) return # Set language request = urllib2.Request(self._LANG_URL, None, std_headers) try: self.report_lang() urllib2.urlopen(request).read() except (urllib2.URLError, httplib.HTTPException, socket.error), err: self._downloader.to_stderr(u'WARNING: unable to set language: %s' % str(err)) return # No authentication to be performed if username is None: return # Log in login_form = { 'current_form': 'loginForm', 'next': '/', 'action_login': 'Log In', 'username': username, 'password': password, } request = urllib2.Request(self._LOGIN_URL, urllib.urlencode(login_form), std_headers) try: self.report_login() login_results = urllib2.urlopen(request).read() if re.search(r'(?i)<form[^>]* name="loginForm"', login_results) is not None: 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.to_stderr(u'WARNING: unable to log in: %s' % str(err)) return # Confirm age age_form = { 'next_url': '/', 'action_confirm': 'Confirm', } request = urllib2.Request(self._AGE_URL, urllib.urlencode(age_form), std_headers) try: self.report_age_confirmation() age_results = urllib2.urlopen(request).read() except (urllib2.URLError, httplib.HTTPException, socket.error), err: self._downloader.trouble(u'ERROR: unable to confirm age: %s' % str(err)) return def _real_extract(self, url): # Extract video id from URL mobj = re.match(self._VALID_URL, url) if mobj is None: self._downloader.trouble(u'ERROR: invalid URL: %s' % url) return video_id = mobj.group(2) # Downloader parameters best_quality = False format_param = None quality_index = 0 if self._downloader is not None: params = self._downloader.params format_param = params.get('format', None) if format_param == '0': format_param = self._available_formats[quality_index] best_quality = True while True: # Extension video_extension = self._video_extensions.get(format_param, 'flv') # Normalize URL, including format normalized_url = 'http://www.youtube.com/watch?v=%s&gl=US&hl=en' % video_id if format_param is not None: normalized_url = '%s&fmt=%s' % (normalized_url, format_param) request = urllib2.Request(normalized_url, None, std_headers) try: self.report_webpage_download(video_id) 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 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 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) self.report_video_url(video_id, video_real_url) # uploader mobj = re.search(r"var watchUsername = '([^']+)';", video_webpage) if mobj is None: self._downloader.trouble(u'ERROR: unable to extract uploader nickname') return video_uploader = mobj.group(1) # title mobj = re.search(r'(?im)<title>YouTube - ([^<]*)</title>', video_webpage) if mobj is None: self._downloader.trouble(u'ERROR: unable to extract video title') 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'%') # simplified title simple_title = re.sub(ur'(?u)([^%s]+)' % simple_title_chars, ur'_', video_title) simple_title = simple_title.strip(ur'_') try: # Process video information 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'), }) return except UnavailableFormatError, err: if best_quality: if quality_index == len(self._available_formats) - 1: # I don't ever expect this to happen self._downloader.trouble(u'ERROR: no known formats available for video') return else: self.report_unavailable_format(video_id, format_param) quality_index += 1 format_param = self._available_formats[quality_index] continue else: self._downloader.trouble('ERROR: format not available for video') returnclass MetacafeIE(InfoExtractor): """Information Extractor for metacafe.com.""" _VALID_URL = r'(?:http://)?(?:www\.)?metacafe\.com/watch/([^/]+)/([^/]+)/.*' _DISCLAIMER = 'http://www.metacafe.com/family_filter/' _FILTER_POST = 'http://www.metacafe.com/f/index.php?inputType=filter&controllerGroup=user' _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._downloader.to_stdout(u'[metacafe] Retrieving disclaimer') def report_age_confirmation(self): """Report attempt to confirm age.""" self._downloader.to_stdout(u'[metacafe] Confirming age') def report_download_webpage(self, video_id): """Report webpage download.""" self._downloader.to_stdout(u'[metacafe] %s: Downloading webpage' % video_id) def report_extraction(self, video_id): """Report information extraction.""" self._downloader.to_stdout(u'[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._downloader.trouble(u'ERROR: unable to retrieve disclaimer: %s' % str(err)) return # Confirm age disclaimer_form = { 'filters': '0', 'submit': "Continue - I'm over 18", } request = urllib2.Request(self._FILTER_POST, 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._downloader.trouble(u'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._downloader.trouble(u'ERROR: invalid URL: %s' % url) return video_id = mobj.group(1) # Check if video comes from YouTube mobj2 = re.match(r'^yt-(.*)$', video_id) if mobj2 is not None: 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' # 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._downloader.trouble(u'ERROR: unable retrieve video webpage: %s' % str(err)) 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 mediaURL = urllib.unquote(mobj.group(1)) mobj = re.search(r'(?m)&gdaKey=(.*?)&', webpage) if mobj is None: self._downloader.trouble(u'ERROR: unable to extract gdaKey') return gdaKey = mobj.group(1) video_url = '%s?__gda__=%s' % (mediaURL, gdaKey) mobj = re.search(r'(?im)<title>(.*) - Video</title>', webpage) if mobj is None: self._downloader.trouble(u'ERROR: unable to extract title') return video_title = mobj.group(1).decode('utf-8') mobj = re.search(r'(?ms)<li id="ChnlUsr">.*?Submitter:.*?<a .*?>(.*?)<', webpage) if mobj is None: self._downloader.trouble(u'ERROR: unable to extract uploader nickname') return video_uploader = mobj.group(1) try: # 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'), }) except UnavailableFormatError: self._downloader.trouble(u'ERROR: format not available for video')class YoutubeSearchIE(InfoExtractor): """Information Extractor for YouTube search queries.""" _VALID_QUERY = r'ytsearch(\d+|all)?:[\s\S]+' _TEMPLATE_URL = 'http://www.youtube.com/results?search_query=%s&page=%s&gl=US&hl=en' _VIDEO_INDICATOR = r'href="/watch\?v=.+?"' _MORE_PAGES_INDICATOR = r'>Next</a>' _youtube_ie = None _max_youtube_results = 1000 def __init__(self, youtube_ie, downloader=None): InfoExtractor.__init__(self, downloader) self._youtube_ie = youtube_ie @staticmethod def suitable(url): return (re.match(YoutubeSearchIE._VALID_QUERY, url) is not None) def report_download_page(self, query, pagenum): """Report attempt to download playlist page with given number.""" self._downloader.to_stdout(u'[youtube] query "%s": Downloading page %s' % (query, pagenum)) def _real_initialize(self): self._youtube_ie.initialize() def _real_extract(self, query): mobj = re.match(self._VALID_QUERY, query) if mobj is None: self._downloader.trouble(u'ERROR: invalid search query "%s"' % query) return prefix, query = query.split(':') prefix = prefix[8:] if prefix == '': self._download_n_results(query, 1) return elif prefix == 'all': self._download_n_results(query, self._max_youtube_results) return else: try: n = long(prefix) if n <= 0: self._downloader.trouble(u'ERROR: invalid download number %s for query "%s"' % (n, query)) return elif n > self._max_youtube_results: self._downloader.to_stderr(u'WARNING: ytsearch returns max %i results (you requested %i)' % (self._max_youtube_results, n)) n = self._max_youtube_results self._download_n_results(query, n) return except ValueError: # parsing prefix as integer fails self._download_n_results(query, 1) return def _download_n_results(self, query, n): """Downloads a specified number of results for a query""" video_ids = [] already_seen = set() pagenum = 1 while True: self.report_download_page(query, pagenum) result_url = self._TEMPLATE_URL % (urllib.quote_plus(query), pagenum) request = urllib2.Request(result_url, None, std_headers) try: 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 # Extract video identifiers for mobj in re.finditer(self._VIDEO_INDICATOR, page): video_id = page[mobj.span()[0]:mobj.span()[1]].split('=')[2][:-1] if video_id not in already_seen: video_ids.append(video_id) already_seen.add(video_id) if len(video_ids) == n: # Specified n videos reached for id in video_ids: self._youtube_ie.extract('http://www.youtube.com/watch?v=%s' % id) return if self._MORE_PAGES_INDICATOR not in page: for id in video_ids: self._youtube_ie.extract('http://www.youtube.com/watch?v=%s' % id) return pagenum = pagenum + 1class YoutubePlaylistIE(InfoExtractor): """Information Extractor for YouTube playlists.""" _VALID_URL = r'(?:http://)?(?:\w+\.)?youtube.com/view_play_list\?p=(.+)' _TEMPLATE_URL = 'http://www.youtube.com/view_play_list?p=%s&page=%s&gl=US&hl=en' _VIDEO_INDICATOR = r'/watch\?v=(.+?)&' _MORE_PAGES_INDICATOR = r'/view_play_list?p=%s&page=%s' _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(YoutubePlaylistIE._VALID_URL, url) is not None) def report_download_page(self, playlist_id, pagenum): """Report attempt to download playlist page with given number.""" self._downloader.to_stdout(u'[youtube] PL %s: Downloading page #%s' % (playlist_id, pagenum)) def _real_initialize(self): self._youtube_ie.initialize() def _real_extract(self, url): # Extract playlist id mobj = re.match(self._VALID_URL, url) if mobj is None: self._downloader.trouble(u'ERROR: invalid url: %s' % url) return # Download playlist pages playlist_id = mobj.group(1) video_ids = [] pagenum = 1 while True: self.report_download_page(playlist_id, pagenum) request = urllib2.Request(self._TEMPLATE_URL % (playlist_id, pagenum), None, std_headers) try: 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 # Extract video identifiers ids_in_page = [] for mobj in re.finditer(self._VIDEO_INDICATOR, page): if mobj.group(1) not in ids_in_page: ids_in_page.append(mobj.group(1)) video_ids.extend(ids_in_page) if (self._MORE_PAGES_INDICATOR % (playlist_id.upper(), pagenum + 1)) not in page: break pagenum = pagenum + 1 for id in video_ids: self._youtube_ie.extract('http://www.youtube.com/watch?v=%s' % id) returnclass PostProcessor(object): """Post Processor class. PostProcessor objects can be added to downloaders with their add_post_processor() method. When the downloader has finished a successful download, it will take its internal chain of PostProcessors and start calling the run() method on each one of them, first with an initial argument and then with the returned value of the previous PostProcessor. The chain will be stopped if one of them ever returns None or the end of the chain is reached. PostProcessor objects follow a "mutual registration" process similar to InfoExtractor objects. """ _downloader = None def __init__(self, downloader=None): self._downloader = downloader def set_downloader(self, downloader): """Sets the downloader for this PP.""" self._downloader = downloader def run(self, information): """Run the PostProcessor. The "information" argument is a dictionary like the ones composed by InfoExtractors. The only difference is that this one has an extra field called "filepath" that points to the downloaded file. When this method returns None, the postprocessing chain is stopped. However, this method may return an information dictionary that will be passed to the next postprocessing object in the chain. It can be the one it received after changing some fields. In addition, this method may raise a PostProcessingError exception that will be taken into account by the downloader it was called from. """ return information # by default, do nothing### MAIN PROGRAM ###if __name__ == '__main__': try: # Modules needed only when running the main program import getpass import optparse # General configuration urllib2.install_opener(urllib2.build_opener(urllib2.ProxyHandler())) urllib2.install_opener(urllib2.build_opener(urllib2.HTTPCookieProcessor())) socket.setdefaulttimeout(300) # 5 minutes should be enough (famous last words) # Parse command line parser = optparse.OptionParser( usage='Usage: %prog [options] url...', version='2009.06.29', conflict_handler='resolve', ) parser.add_option('-h', '--help', action='help', help='print this help text and exit') parser.add_option('-v', '--version', action='version', help='print program version and exit') parser.add_option('-i', '--ignore-errors', action='store_true', dest='ignoreerrors', help='continue on download errors', default=False) parser.add_option('-r', '--rate-limit', dest='ratelimit', metavar='L', help='download rate limit (e.g. 50k or 44.6m)') authentication = optparse.OptionGroup(parser, 'Authentication Options') authentication.add_option('-u', '--username', dest='username', metavar='UN', help='account username') authentication.add_option('-p', '--password', dest='password', metavar='PW', help='account password') authentication.add_option('-n', '--netrc', action='store_true', dest='usenetrc', help='use .netrc authentication data', default=False) parser.add_option_group(authentication) video_format = optparse.OptionGroup(parser, 'Video Format Options') video_format.add_option('-f', '--format', action='store', dest='format', metavar='FMT', help='video format code') video_format.add_option('-b', '--best-quality', action='store_const', dest='format', help='download the best quality video possible', const='0') video_format.add_option('-m', '--mobile-version', action='store_const', dest='format', help='alias for -f 17', const='17') video_format.add_option('-d', '--high-def', action='store_const', dest='format', help='alias for -f 22', const='22') parser.add_option_group(video_format) verbosity = optparse.OptionGroup(parser, 'Verbosity / Simulation Options') verbosity.add_option('-q', '--quiet', action='store_true', dest='quiet', help='activates quiet mode', default=False) verbosity.add_option('-s', '--simulate', action='store_true', dest='simulate', help='do not download video', default=False) verbosity.add_option('-g', '--get-url', action='store_true', dest='geturl', help='simulate, quiet but print URL', default=False) verbosity.add_option('-e', '--get-title', action='store_true', dest='gettitle', help='simulate, quiet but print title', default=False) parser.add_option_group(verbosity) filesystem = optparse.OptionGroup(parser, 'Filesystem Options') filesystem.add_option('-t', '--title', action='store_true', dest='usetitle', help='use title in file name', default=False) filesystem.add_option('-l', '--literal', action='store_true', dest='useliteral', help='use literal title in file name', default=False) filesystem.add_option('-o', '--output', dest='outtmpl', metavar='TPL', help='output filename template') filesystem.add_option('-a', '--batch-file', dest='batchfile', metavar='F', help='file containing URLs to download') filesystem.add_option('-w', '--no-overwrites', action='store_true', dest='nooverwrites', help='do not overwrite files', default=False) filesystem.add_option('-c', '--continue', action='store_true', dest='continue_dl', help='resume partially downloaded files', default=False) parser.add_option_group(filesystem) (opts, args) = parser.parse_args() # Batch file verification batchurls = [] if opts.batchfile is not None: try: batchurls = open(opts.batchfile, 'r').readlines() batchurls = [x.strip() for x in batchurls] batchurls = [x for x in batchurls if len(x) > 0] except IOError: sys.exit(u'ERROR: batch file could not be read') all_urls = batchurls + args # Conflicting, missing and erroneous options if len(all_urls) < 1: parser.error(u'you must provide at least one URL') if opts.usenetrc and (opts.username is not None or opts.password is not None): parser.error(u'using .netrc conflicts with giving username/password') if opts.password is not None and opts.username is None: parser.error(u'account username missing') if opts.outtmpl is not None and (opts.useliteral or opts.usetitle): parser.error(u'using output template conflicts with using title or literal title') if opts.usetitle and opts.useliteral: parser.error(u'using title conflicts with using literal title') if opts.username is not None and opts.password is None: opts.password = getpass.getpass(u'Type account password and press return:') if opts.ratelimit is not None: numeric_limit = FileDownloader.parse_bytes(opts.ratelimit) if numeric_limit is None: parser.error(u'invalid rate limit specified') opts.ratelimit = numeric_limit # Information extractors youtube_ie = YoutubeIE() metacafe_ie = MetacafeIE(youtube_ie) youtube_pl_ie = YoutubePlaylistIE(youtube_ie) youtube_search_ie = YoutubeSearchIE(youtube_ie) # File downloader fd = FileDownloader({ 'usenetrc': opts.usenetrc, 'username': opts.username, 'password': opts.password, 'quiet': (opts.quiet or opts.geturl or opts.gettitle), 'forceurl': opts.geturl, 'forcetitle': opts.gettitle, 'simulate': (opts.simulate or opts.geturl or opts.gettitle), 'format': opts.format, 'outtmpl': ((opts.outtmpl is not None and opts.outtmpl.decode(locale.getpreferredencoding())) or (opts.usetitle and u'%(stitle)s-%(id)s.%(ext)s') or (opts.useliteral and u'%(title)s-%(id)s.%(ext)s') or u'%(id)s.%(ext)s'), 'ignoreerrors': opts.ignoreerrors, 'ratelimit': opts.ratelimit, 'nooverwrites': opts.nooverwrites, 'continuedl': opts.continue_dl, }) fd.add_info_extractor(youtube_search_ie) fd.add_info_extractor(youtube_pl_ie) fd.add_info_extractor(metacafe_ie) fd.add_info_extractor(youtube_ie) retcode = fd.download(all_urls) sys.exit(retcode) except DownloadError: sys.exit(1) except SameFileError: sys.exit(u'ERROR: fixed output name but more than one file to download') except KeyboardInterrupt: sys.exit(u'\nERROR: Interrupted by user')