commit 4fa74b5252a23c2890ddee52b8ee5811b5bb2987 Author: Ricardo Garcia Date: Mon Jul 21 23:12:31 2008 +0200 Create initial preview version of the new youtube-dl diff --git a/.hgignore b/.hgignore new file mode 100644 index 0000000000..3233d6316f --- /dev/null +++ b/.hgignore @@ -0,0 +1 @@ +youtube-dl-old diff --git a/youtube-dl b/youtube-dl new file mode 100755 index 0000000000..45773fda24 --- /dev/null +++ b/youtube-dl @@ -0,0 +1,438 @@ +#!/usr/bin/env python +# -*- coding: utf-8 -*- +# Author: Ricardo Garcia Gonzalez +# License: Public domain code +import htmlentitydefs +import httplib +import math +import netrc +import os +import os.path +import re +import socket +import string +import sys +import time +import urllib +import urllib2 + +std_headers = { + 'User-Agent': 'UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9) Gecko/2008052906 Firefox/3.0', + '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 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 it's able to handle it. The InfoExtractor returns + all the information to the FileDownloader and the latter downloads the + file or does whatever it's instructed to do. + + 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 get_params() + method 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. + format: Video format code. + outtmpl: Template for output names. + """ + + _params = None + _ies = [] + + def __init__(self, params): + self._ies = [] + self.set_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))] + 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] + if exponent == 0: + return '%s%s' % (bytes, suffix) + 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 '%9s' % 'N/A 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 int(new_max) + rate = bytes / elapsed_time + if rate > new_max: + return int(new_max) + if rate < new_min: + return int(new_min) + return int(rate) + + def set_params(self, params): + """Sets parameters.""" + if type(params) != dict: + raise ValueError('params: dictionary expected') + self._params = params + + def get_params(self): + """Get parameters.""" + return self._params + + 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 download(self, url_list): + """Download a given list of URLs.""" + for url in url_list: + suitable_found = False + for ie in self._ies: + if not ie.suitable(url): + continue + # Suitable InfoExtractor found + suitable_found = True + for result in ie.extract(url): + if result is None: + continue + try: + filename = self._params['outtmpl'] % result + except (KeyError), err: + sys.stderr.write('ERROR: invalid output template: %s\n' % str(err)) + continue + try: + self.pmkdir(filename) + except (OSError, IOError), err: + sys.stderr.write('ERROR: unable to create directories: %s\n' % str(err)) + continue + try: + outstream = open(filename, 'wb') + except (OSError, IOError), err: + sys.stderr.write('ERROR: unable to open for writing: %s\n' % str(err)) + continue + try: + self._do_download(outstream, result['url']) + outstream.close() + except (OSError, IOError), err: + sys.stderr.write('ERROR: unable to write video data: %s\n' % str(err)) + continue + except (urllib2.URLError, httplib.HTTPException, socket.error), err: + sys.stderr.write('ERROR: unable to download video data: %s\n' % str(err)) + continue + break + if not suitable_found: + sys.stderr.write('ERROR: no suitable InfoExtractor: %s\n' % url) + + def _do_download(self, stream, url): + request = urllib2.Request(url, None, std_headers) + data = urllib2.urlopen(request) + 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: + 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) + + if not self._params.get('quiet', False): + sys.stdout.write('\r[download] %s of %s at %s ETA %s' % + (percent_str, data_len_str, speed_str, eta_str)) + sys.stdout.flush() + + 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 + stream.write(data_block) + block_size = self.best_block_size(after - before, data_block_len) + + if not self._params.get('quiet', False): + print + + if data_len is not None and str(byte_counter) != data_len: + raise ValueError('Content too short: %s/%s bytes' % (byte_counter, data_len)) + +class 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. It is returned in a list of dictionaries when + calling its extract() method. It is a list because a URL can refer to + more than one video (think of playlists). 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 True + + def initialize(self): + """Initializes an instance (login, 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 to_stdout(self, message): + if self._downloader is None or not self._downloader.get_params().get('quiet', False): + print message + + def to_stderr(self, message): + sys.stderr.write('%s\n' % message) + + def _real_initialize(self): + """Real initialization process. Redefine in subclasses.""" + pass + + def _real_extract(self, url): + """Real extraction process. Redefine in subclasses.""" + pass + +class YoutubeIE(InfoExtractor): + """Information extractor for youtube.com.""" + + _LOGIN_URL = 'http://www.youtube.com/login?next=/' + _AGE_URL = 'http://www.youtube.com/verify_age?next_url=/' + _NETRC_MACHINE = 'youtube' + + def _real_initialize(self): + if self._downloader is None: + return + + username = None + password = None + downloader_params = self._downloader.get_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.to_stderr('WARNING: parsing .netrc: %s' % str(err)) + return + + 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.to_stdout('[youtube] Logging in') + login_results = urllib2.urlopen(request).read() + if re.search(r'(?i)]* name="loginForm"', login_results) is not None: + self.to_stderr('WARNING: Unable to log in: bad username or password') + return + except (urllib2.URLError, httplib.HTTPException, socket.error), err: + self.to_stderr('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.to_stdout('[youtube] Confirming age') + age_results = urllib2.urlopen(request).read() + except (urllib2.URLError, httplib.HTTPException, socket.error), err: + sys.exit('ERROR: Unable to confirm age: %s' % str(err)) + + 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) + if mobj is None: + self.to_stderr('ERROR: Invalid URL: %s' % url) + return [None] + video_id = mobj.group(2) + + # Downloader parameters + format_param = None + if self._downloader is not None: + params = self._downloader.get_params() + format_param = params.get('format', None) + + # Extension + video_extension = {18: 'mp4'}.get(format_param, 'flv') + + # Normalize URL, including format + normalized_url = 'http://www.youtube.com/watch?v=%s' % 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.to_stdout('[youtube] %s: Downloading video webpage' % video_id) + video_webpage = urllib2.urlopen(request).read() + except (urllib2.URLError, httplib.HTTPException, socket.error), err: + sys.exit('ERROR: Unable to download video: %s' % str(err)) + self.to_stdout('[youtube] %s: Extracting video information' % video_id) + + # "t" param + mobj = re.search(r', "t": "([^"]+)"', video_webpage) + if mobj is None: + self.to_stderr('ERROR: Unable to extract "t" parameter') + return [None] + video_real_url = 'http://www.youtube.com/get_video?video_id=%s&t=%s' % (video_id, mobj.group(1)) + if format_param is not None: + video_real_url = '%s&fmt=%s' % (video_real_url, format_param) + + # uploader + mobj = re.search(r'More From: ([^<]*)<', video_webpage) + if mobj is None: + self.to_stderr('ERROR: Unable to extract uploader nickname') + return [None] + video_uploader = mobj.group(1) + + # title + mobj = re.search(r'(?im)YouTube - ([^<]*)', video_webpage) + if mobj is None: + self.to_stderr('ERROR: Unable to extract video title') + return [None] + video_title = mobj.group(1).decode('utf-8') + video_title = re.sub(u'&(.+?);', lambda x: unichr(htmlentitydefs.name2codepoint[x.group(1)]), video_title) + + # simplified title + simple_title = re.sub(u'([^%s]+)' % simple_title_chars, u'_', video_title) + simple_title = simple_title.strip(u'_') + + # Return information + return [{ 'id': video_id, + 'url': video_real_url, + 'uploader': video_uploader, + 'title': video_title, + 'stitle': simple_title, + 'ext': video_extension, + }] + +if __name__ == '__main__': + try: + # General configuration + urllib2.install_opener(urllib2.build_opener(urllib2.ProxyHandler())) + urllib2.install_opener(urllib2.build_opener(urllib2.HTTPCookieProcessor())) + + # Information extractors + youtube_ie = YoutubeIE() + + # File downloader + fd = FileDownloader({ 'usenetrc': False, + 'username': None, + 'password': None, + 'quiet': False, + 'format': None, + 'outtmpl': '%(id)s.%(ext)s' + }) + fd.add_info_extractor(youtube_ie) + fd.download([ 'http://www.youtube.com/watch?v=t7qdwI7TVe8', + 'http://www.youtube.com/watch?v=IJyn3pRcy_Q', + 'http://www.youtube.com/watch?v=DZRXe1wtC-M', ]) + + except KeyboardInterrupt: + sys.exit('\nERROR: Interrupted by user')