mirror of
https://github.com/l1ving/youtube-dl
synced 2024-12-22 20:13:31 +08:00
604 lines
26 KiB
Python
604 lines
26 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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from __future__ import absolute_import
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import io
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import os
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import re
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import shutil
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import socket
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import sys
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import time
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import traceback
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from .utils import *
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from .extractor import get_info_extractor, gen_extractors
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from .FileDownloader import FileDownloader
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class YoutubeDL(object):
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"""YoutubeDL class.
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YoutubeDL objects are the ones responsible of downloading the
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actual video file and writing it to disk if the user has requested
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it, among some other tasks. In most cases there should be one per
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program. As, given a video URL, the downloader doesn't know how to
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extract all the needed information, task that InfoExtractors do, it
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has to pass the URL to one of them.
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For this, YoutubeDL objects have a method that allows
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InfoExtractors to be registered in a given order. When it is passed
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a URL, the YoutubeDL object handles it to the first InfoExtractor it
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finds that reports being able to handle it. The InfoExtractor extracts
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all the information about the video or videos the URL refers to, and
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YoutubeDL process the extracted information, possibly using a File
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Downloader to download the video.
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YoutubeDL objects accept a lot of parameters. In order not to saturate
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the object constructor with arguments, it receives a dictionary of
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options instead. These options are available through the params
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attribute for the InfoExtractors to use. The YoutubeDL also
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registers itself as the downloader in charge for the InfoExtractors
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that are added to it, so this is a "mutual registration".
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Available options:
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username: Username for authentication purposes.
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password: Password for authentication purposes.
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videopassword: Password for acces a video.
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usenetrc: Use netrc for authentication instead.
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verbose: Print additional info to stdout.
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quiet: Do not print messages to stdout.
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forceurl: Force printing final URL.
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forcetitle: Force printing title.
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forceid: Force printing ID.
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forcethumbnail: Force printing thumbnail URL.
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forcedescription: Force printing description.
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forcefilename: Force printing final filename.
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simulate: Do not download the video files.
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format: Video format code.
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format_limit: Highest quality format to try.
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outtmpl: Template for output names.
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restrictfilenames: Do not allow "&" and spaces in file names
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ignoreerrors: Do not stop on download errors.
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nooverwrites: Prevent overwriting files.
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playliststart: Playlist item to start at.
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playlistend: Playlist item to end at.
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matchtitle: Download only matching titles.
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rejecttitle: Reject downloads for matching titles.
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logtostderr: Log messages to stderr instead of stdout.
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writedescription: Write the video description to a .description file
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writeinfojson: Write the video description to a .info.json file
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writethumbnail: Write the thumbnail image to a file
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writesubtitles: Write the video subtitles to a file
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writeautomaticsub: Write the automatic subtitles to a file
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allsubtitles: Downloads all the subtitles of the video
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listsubtitles: Lists all available subtitles for the video
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subtitlesformat: Subtitle format [srt/sbv/vtt] (default=srt)
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subtitleslang: Language of the subtitles to download
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keepvideo: Keep the video file after post-processing
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daterange: A DateRange object, download only if the upload_date is in the range.
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skip_download: Skip the actual download of the video file
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The following parameters are not used by YoutubeDL itself, they are used by
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the FileDownloader:
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nopart, updatetime, buffersize, ratelimit, min_filesize, max_filesize, test,
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noresizebuffer, retries, continuedl, noprogress, consoletitle
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"""
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params = None
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_ies = []
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_pps = []
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_download_retcode = None
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_num_downloads = None
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_screen_file = None
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def __init__(self, params):
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"""Create a FileDownloader object with the given options."""
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self._ies = []
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self._pps = []
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self._progress_hooks = []
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self._download_retcode = 0
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self._num_downloads = 0
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self._screen_file = [sys.stdout, sys.stderr][params.get('logtostderr', False)]
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self.params = params
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self.fd = FileDownloader(self, self.params)
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if '%(stitle)s' in self.params['outtmpl']:
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self.report_warning(u'%(stitle)s is deprecated. Use the %(title)s and the --restrict-filenames flag(which also secures %(uploader)s et al) instead.')
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def add_info_extractor(self, ie):
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"""Add an InfoExtractor object to the end of the list."""
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self._ies.append(ie)
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ie.set_downloader(self)
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def add_default_info_extractors(self):
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"""
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Add the InfoExtractors returned by gen_extractors to the end of the list
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"""
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for ie in gen_extractors():
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self.add_info_extractor(ie)
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def add_post_processor(self, pp):
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"""Add a PostProcessor object to the end of the chain."""
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self._pps.append(pp)
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pp.set_downloader(self)
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def to_screen(self, message, skip_eol=False):
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"""Print message to stdout if not in quiet mode."""
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assert type(message) == type(u'')
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if not self.params.get('quiet', False):
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terminator = [u'\n', u''][skip_eol]
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output = message + terminator
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if 'b' in getattr(self._screen_file, 'mode', '') or sys.version_info[0] < 3: # Python 2 lies about the mode of sys.stdout/sys.stderr
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output = output.encode(preferredencoding(), 'ignore')
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self._screen_file.write(output)
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self._screen_file.flush()
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def to_stderr(self, message):
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"""Print message to stderr."""
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assert type(message) == type(u'')
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output = message + u'\n'
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if 'b' in getattr(self._screen_file, 'mode', '') or sys.version_info[0] < 3: # Python 2 lies about the mode of sys.stdout/sys.stderr
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output = output.encode(preferredencoding())
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sys.stderr.write(output)
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def fixed_template(self):
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"""Checks if the output template is fixed."""
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return (re.search(u'(?u)%\\(.+?\\)s', self.params['outtmpl']) is None)
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def trouble(self, message=None, tb=None):
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"""Determine action to take when a download problem appears.
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Depending on if the downloader has been configured to ignore
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download errors or not, this method may throw an exception or
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not when errors are found, after printing the message.
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tb, if given, is additional traceback information.
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"""
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if message is not None:
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self.to_stderr(message)
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if self.params.get('verbose'):
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if tb is None:
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if sys.exc_info()[0]: # if .trouble has been called from an except block
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tb = u''
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if hasattr(sys.exc_info()[1], 'exc_info') and sys.exc_info()[1].exc_info[0]:
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tb += u''.join(traceback.format_exception(*sys.exc_info()[1].exc_info))
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tb += compat_str(traceback.format_exc())
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else:
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tb_data = traceback.format_list(traceback.extract_stack())
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tb = u''.join(tb_data)
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self.to_stderr(tb)
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if not self.params.get('ignoreerrors', False):
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if sys.exc_info()[0] and hasattr(sys.exc_info()[1], 'exc_info') and sys.exc_info()[1].exc_info[0]:
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exc_info = sys.exc_info()[1].exc_info
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else:
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exc_info = sys.exc_info()
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raise DownloadError(message, exc_info)
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self._download_retcode = 1
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def report_warning(self, message):
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'''
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Print the message to stderr, it will be prefixed with 'WARNING:'
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If stderr is a tty file the 'WARNING:' will be colored
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'''
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if sys.stderr.isatty() and os.name != 'nt':
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_msg_header=u'\033[0;33mWARNING:\033[0m'
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else:
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_msg_header=u'WARNING:'
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warning_message=u'%s %s' % (_msg_header,message)
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self.to_stderr(warning_message)
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def report_error(self, message, tb=None):
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'''
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Do the same as trouble, but prefixes the message with 'ERROR:', colored
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in red if stderr is a tty file.
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'''
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if sys.stderr.isatty() and os.name != 'nt':
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_msg_header = u'\033[0;31mERROR:\033[0m'
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else:
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_msg_header = u'ERROR:'
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error_message = u'%s %s' % (_msg_header, message)
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self.trouble(error_message, tb)
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def slow_down(self, start_time, byte_counter):
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"""Sleep if the download speed is over the rate limit."""
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rate_limit = self.params.get('ratelimit', None)
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if rate_limit is None or byte_counter == 0:
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return
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now = time.time()
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elapsed = now - start_time
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if elapsed <= 0.0:
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return
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speed = float(byte_counter) / elapsed
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if speed > rate_limit:
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time.sleep((byte_counter - rate_limit * (now - start_time)) / rate_limit)
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def report_writedescription(self, descfn):
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""" Report that the description file is being written """
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self.to_screen(u'[info] Writing video description to: ' + descfn)
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def report_writesubtitles(self, sub_filename):
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""" Report that the subtitles file is being written """
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self.to_screen(u'[info] Writing video subtitles to: ' + sub_filename)
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def report_writeinfojson(self, infofn):
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""" Report that the metadata file has been written """
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self.to_screen(u'[info] Video description metadata as JSON to: ' + infofn)
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def report_file_already_downloaded(self, file_name):
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"""Report file has already been fully downloaded."""
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try:
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self.to_screen(u'[download] %s has already been downloaded' % file_name)
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except (UnicodeEncodeError) as err:
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self.to_screen(u'[download] The file has already been downloaded')
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def increment_downloads(self):
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"""Increment the ordinal that assigns a number to each file."""
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self._num_downloads += 1
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def prepare_filename(self, info_dict):
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"""Generate the output filename."""
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try:
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template_dict = dict(info_dict)
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template_dict['epoch'] = int(time.time())
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autonumber_size = self.params.get('autonumber_size')
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if autonumber_size is None:
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autonumber_size = 5
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autonumber_templ = u'%0' + str(autonumber_size) + u'd'
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template_dict['autonumber'] = autonumber_templ % self._num_downloads
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if template_dict['playlist_index'] is not None:
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template_dict['playlist_index'] = u'%05d' % template_dict['playlist_index']
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sanitize = lambda k,v: sanitize_filename(
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u'NA' if v is None else compat_str(v),
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restricted=self.params.get('restrictfilenames'),
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is_id=(k==u'id'))
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template_dict = dict((k, sanitize(k, v)) for k,v in template_dict.items())
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filename = self.params['outtmpl'] % template_dict
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return filename
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except KeyError as err:
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self.report_error(u'Erroneous output template')
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return None
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except ValueError as err:
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self.report_error(u'Error in output template: ' + str(err) + u' (encoding: ' + repr(preferredencoding()) + ')')
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return None
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def _match_entry(self, info_dict):
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""" Returns None iff the file should be downloaded """
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title = info_dict['title']
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matchtitle = self.params.get('matchtitle', False)
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if matchtitle:
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if not re.search(matchtitle, title, re.IGNORECASE):
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return u'[download] "' + title + '" title did not match pattern "' + matchtitle + '"'
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rejecttitle = self.params.get('rejecttitle', False)
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if rejecttitle:
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if re.search(rejecttitle, title, re.IGNORECASE):
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return u'"' + title + '" title matched reject pattern "' + rejecttitle + '"'
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date = info_dict.get('upload_date', None)
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if date is not None:
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dateRange = self.params.get('daterange', DateRange())
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if date not in dateRange:
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return u'[download] %s upload date is not in range %s' % (date_from_str(date).isoformat(), dateRange)
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return None
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def extract_info(self, url, download=True, ie_key=None, extra_info={}):
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'''
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Returns a list with a dictionary for each video we find.
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If 'download', also downloads the videos.
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extra_info is a dict containing the extra values to add to each result
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'''
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if ie_key:
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ie = get_info_extractor(ie_key)()
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ie.set_downloader(self)
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ies = [ie]
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else:
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ies = self._ies
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for ie in ies:
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if not ie.suitable(url):
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continue
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if not ie.working():
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self.report_warning(u'The program functionality for this site has been marked as broken, '
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u'and will probably not work.')
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try:
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ie_result = ie.extract(url)
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if ie_result is None: # Finished already (backwards compatibility; listformats and friends should be moved here)
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break
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if isinstance(ie_result, list):
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# Backwards compatibility: old IE result format
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for result in ie_result:
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result.update(extra_info)
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ie_result = {
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'_type': 'compat_list',
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'entries': ie_result,
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}
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else:
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ie_result.update(extra_info)
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if 'extractor' not in ie_result:
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ie_result['extractor'] = ie.IE_NAME
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return self.process_ie_result(ie_result, download=download)
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except ExtractorError as de: # An error we somewhat expected
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self.report_error(compat_str(de), de.format_traceback())
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break
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except Exception as e:
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if self.params.get('ignoreerrors', False):
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self.report_error(compat_str(e), tb=compat_str(traceback.format_exc()))
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break
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else:
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raise
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else:
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self.report_error(u'no suitable InfoExtractor: %s' % url)
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def process_ie_result(self, ie_result, download=True, extra_info={}):
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"""
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Take the result of the ie(may be modified) and resolve all unresolved
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references (URLs, playlist items).
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It will also download the videos if 'download'.
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Returns the resolved ie_result.
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"""
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result_type = ie_result.get('_type', 'video') # If not given we suppose it's a video, support the default old system
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if result_type == 'video':
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ie_result.update(extra_info)
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if 'playlist' not in ie_result:
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# It isn't part of a playlist
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ie_result['playlist'] = None
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ie_result['playlist_index'] = None
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if download:
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self.process_info(ie_result)
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return ie_result
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elif result_type == 'url':
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# We have to add extra_info to the results because it may be
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# contained in a playlist
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return self.extract_info(ie_result['url'],
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download,
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ie_key=ie_result.get('ie_key'),
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extra_info=extra_info)
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elif result_type == 'playlist':
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# We process each entry in the playlist
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playlist = ie_result.get('title', None) or ie_result.get('id', None)
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self.to_screen(u'[download] Downloading playlist: %s' % playlist)
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playlist_results = []
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n_all_entries = len(ie_result['entries'])
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playliststart = self.params.get('playliststart', 1) - 1
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playlistend = self.params.get('playlistend', -1)
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if playlistend == -1:
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entries = ie_result['entries'][playliststart:]
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else:
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entries = ie_result['entries'][playliststart:playlistend]
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n_entries = len(entries)
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self.to_screen(u"[%s] playlist '%s': Collected %d video ids (downloading %d of them)" %
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(ie_result['extractor'], playlist, n_all_entries, n_entries))
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for i,entry in enumerate(entries,1):
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self.to_screen(u'[download] Downloading video #%s of %s' %(i, n_entries))
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extra = {
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'playlist': playlist,
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'playlist_index': i + playliststart,
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}
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if not 'extractor' in entry:
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# We set the extractor, if it's an url it will be set then to
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# the new extractor, but if it's already a video we must make
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# sure it's present: see issue #877
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entry['extractor'] = ie_result['extractor']
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entry_result = self.process_ie_result(entry,
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download=download,
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extra_info=extra)
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playlist_results.append(entry_result)
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ie_result['entries'] = playlist_results
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return ie_result
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elif result_type == 'compat_list':
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def _fixup(r):
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r.setdefault('extractor', ie_result['extractor'])
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return r
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ie_result['entries'] = [
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self.process_ie_result(_fixup(r), download=download)
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for r in ie_result['entries']
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]
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return ie_result
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else:
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raise Exception('Invalid result type: %s' % result_type)
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def process_info(self, info_dict):
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"""Process a single resolved IE result."""
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assert info_dict.get('_type', 'video') == 'video'
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#We increment the download the download count here to match the previous behaviour.
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self.increment_downloads()
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info_dict['fulltitle'] = info_dict['title']
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if len(info_dict['title']) > 200:
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info_dict['title'] = info_dict['title'][:197] + u'...'
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# Keep for backwards compatibility
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info_dict['stitle'] = info_dict['title']
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if not 'format' in info_dict:
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info_dict['format'] = info_dict['ext']
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reason = self._match_entry(info_dict)
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if reason is not None:
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self.to_screen(u'[download] ' + reason)
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return
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max_downloads = self.params.get('max_downloads')
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if max_downloads is not None:
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if self._num_downloads > int(max_downloads):
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raise MaxDownloadsReached()
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filename = self.prepare_filename(info_dict)
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# Forced printings
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if self.params.get('forcetitle', False):
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compat_print(info_dict['title'])
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if self.params.get('forceid', False):
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compat_print(info_dict['id'])
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if self.params.get('forceurl', False):
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compat_print(info_dict['url'])
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if self.params.get('forcethumbnail', False) and 'thumbnail' in info_dict:
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compat_print(info_dict['thumbnail'])
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if self.params.get('forcedescription', False) and 'description' in info_dict:
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compat_print(info_dict['description'])
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if self.params.get('forcefilename', False) and filename is not None:
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compat_print(filename)
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if self.params.get('forceformat', False):
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compat_print(info_dict['format'])
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# Do nothing else if in simulate mode
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if self.params.get('simulate', False):
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return
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if filename is None:
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return
|
|
|
|
try:
|
|
dn = os.path.dirname(encodeFilename(filename))
|
|
if dn != '' and not os.path.exists(dn):
|
|
os.makedirs(dn)
|
|
except (OSError, IOError) as err:
|
|
self.report_error(u'unable to create directory ' + compat_str(err))
|
|
return
|
|
|
|
if self.params.get('writedescription', False):
|
|
try:
|
|
descfn = filename + u'.description'
|
|
self.report_writedescription(descfn)
|
|
with io.open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
|
|
descfile.write(info_dict['description'])
|
|
except (OSError, IOError):
|
|
self.report_error(u'Cannot write description file ' + descfn)
|
|
return
|
|
|
|
if (self.params.get('writesubtitles', False) or self.params.get('writeautomaticsub')) 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
|
|
subtitle = info_dict['subtitles'][0]
|
|
(sub_error, sub_lang, sub) = subtitle
|
|
sub_format = self.params.get('subtitlesformat')
|
|
if sub_error:
|
|
self.report_warning("Some error while getting the subtitles")
|
|
else:
|
|
try:
|
|
sub_filename = filename.rsplit('.', 1)[0] + u'.' + sub_lang + u'.' + sub_format
|
|
self.report_writesubtitles(sub_filename)
|
|
with io.open(encodeFilename(sub_filename), 'w', encoding='utf-8') as subfile:
|
|
subfile.write(sub)
|
|
except (OSError, IOError):
|
|
self.report_error(u'Cannot write subtitles file ' + descfn)
|
|
return
|
|
|
|
if self.params.get('allsubtitles', False) and 'subtitles' in info_dict and info_dict['subtitles']:
|
|
subtitles = info_dict['subtitles']
|
|
sub_format = self.params.get('subtitlesformat')
|
|
for subtitle in subtitles:
|
|
(sub_error, sub_lang, sub) = subtitle
|
|
if sub_error:
|
|
self.report_warning("Some error while getting the subtitles")
|
|
else:
|
|
try:
|
|
sub_filename = filename.rsplit('.', 1)[0] + u'.' + sub_lang + u'.' + sub_format
|
|
self.report_writesubtitles(sub_filename)
|
|
with io.open(encodeFilename(sub_filename), 'w', encoding='utf-8') as subfile:
|
|
subfile.write(sub)
|
|
except (OSError, IOError):
|
|
self.report_error(u'Cannot write subtitles file ' + descfn)
|
|
return
|
|
|
|
if self.params.get('writeinfojson', False):
|
|
infofn = filename + u'.info.json'
|
|
self.report_writeinfojson(infofn)
|
|
try:
|
|
json_info_dict = dict((k, v) for k,v in info_dict.items() if not k in ['urlhandle'])
|
|
write_json_file(json_info_dict, encodeFilename(infofn))
|
|
except (OSError, IOError):
|
|
self.report_error(u'Cannot write metadata to JSON file ' + infofn)
|
|
return
|
|
|
|
if self.params.get('writethumbnail', False):
|
|
if info_dict.get('thumbnail') is not None:
|
|
thumb_format = determine_ext(info_dict['thumbnail'], u'jpg')
|
|
thumb_filename = filename.rpartition('.')[0] + u'.' + thumb_format
|
|
self.to_screen(u'[%s] %s: Downloading thumbnail ...' %
|
|
(info_dict['extractor'], info_dict['id']))
|
|
uf = compat_urllib_request.urlopen(info_dict['thumbnail'])
|
|
with open(thumb_filename, 'wb') as thumbf:
|
|
shutil.copyfileobj(uf, thumbf)
|
|
self.to_screen(u'[%s] %s: Writing thumbnail to: %s' %
|
|
(info_dict['extractor'], info_dict['id'], thumb_filename))
|
|
|
|
if not self.params.get('skip_download', False):
|
|
if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(filename)):
|
|
success = True
|
|
else:
|
|
try:
|
|
success = self.fd._do_download(filename, info_dict)
|
|
except (OSError, IOError) as err:
|
|
raise UnavailableVideoError(err)
|
|
except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
|
|
self.report_error(u'unable to download video data: %s' % str(err))
|
|
return
|
|
except (ContentTooShortError, ) as err:
|
|
self.report_error(u'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) as err:
|
|
self.report_error(u'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:
|
|
try:
|
|
#It also downloads the videos
|
|
videos = self.extract_info(url)
|
|
except UnavailableVideoError:
|
|
self.report_error(u'unable to download video')
|
|
except MaxDownloadsReached:
|
|
self.to_screen(u'[info] Maximum number of downloaded files reached.')
|
|
raise
|
|
|
|
return self._download_retcode
|
|
|
|
def post_process(self, filename, ie_info):
|
|
"""Run all the postprocessors on the given file."""
|
|
info = dict(ie_info)
|
|
info['filepath'] = filename
|
|
keep_video = None
|
|
for pp in self._pps:
|
|
try:
|
|
keep_video_wish,new_info = pp.run(info)
|
|
if keep_video_wish is not None:
|
|
if keep_video_wish:
|
|
keep_video = keep_video_wish
|
|
elif keep_video is None:
|
|
# No clear decision yet, let IE decide
|
|
keep_video = keep_video_wish
|
|
except PostProcessingError as e:
|
|
self.report_error(e.msg)
|
|
if keep_video is False and not self.params.get('keepvideo', False):
|
|
try:
|
|
self.to_screen(u'Deleting original file %s (pass -k to keep)' % filename)
|
|
os.remove(encodeFilename(filename))
|
|
except (IOError, OSError):
|
|
self.report_warning(u'Unable to remove downloaded video file')
|