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#!/usr/bin/env python |
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# -*- coding: utf-8 -*- |
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import httplib |
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import math |
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import os |
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import re |
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import socket |
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import subprocess |
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import sys |
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import time |
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import urllib2 |
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if os.name == 'nt': |
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import ctypes |
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from utils import * |
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class FileDownloader(object): |
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"""File Downloader class. |
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File downloader 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, file downloader 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 file downloader 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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asks the FileDownloader to process the video information, possibly |
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downloading the video. |
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File downloaders 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 FileDownloader 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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usenetrc: Use netrc for authentication instead. |
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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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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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ignoreerrors: Do not stop on download errors. |
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ratelimit: Download speed limit, in bytes/sec. |
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nooverwrites: Prevent overwriting files. |
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retries: Number of times to retry for HTTP error 5xx |
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continuedl: Try to continue downloads if possible. |
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noprogress: Do not print the progress bar. |
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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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consoletitle: Display progress in console window's titlebar. |
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nopart: Do not use temporary .part files. |
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updatetime: Use the Last-modified header to set output file timestamps. |
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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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writesubtitles: Write the video subtitles to a .srt file |
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subtitleslang: Language of the subtitles to download |
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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._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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@staticmethod |
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def format_bytes(bytes): |
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if bytes is None: |
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return 'N/A' |
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if type(bytes) is str: |
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bytes = float(bytes) |
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if bytes == 0.0: |
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exponent = 0 |
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else: |
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exponent = long(math.log(bytes, 1024.0)) |
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suffix = 'bkMGTPEZY'[exponent] |
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converted = float(bytes) / float(1024 ** exponent) |
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return '%.2f%s' % (converted, suffix) |
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@staticmethod |
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def calc_percent(byte_counter, data_len): |
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if data_len is None: |
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return '---.-%' |
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return '%6s' % ('%3.1f%%' % (float(byte_counter) / float(data_len) * 100.0)) |
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@staticmethod |
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def calc_eta(start, now, total, current): |
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if total is None: |
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return '--:--' |
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dif = now - start |
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if current == 0 or dif < 0.001: # One millisecond |
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return '--:--' |
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rate = float(current) / dif |
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eta = long((float(total) - float(current)) / rate) |
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(eta_mins, eta_secs) = divmod(eta, 60) |
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if eta_mins > 99: |
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return '--:--' |
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return '%02d:%02d' % (eta_mins, eta_secs) |
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@staticmethod |
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def calc_speed(start, now, bytes): |
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dif = now - start |
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if bytes == 0 or dif < 0.001: # One millisecond |
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return '%10s' % '---b/s' |
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return '%10s' % ('%s/s' % FileDownloader.format_bytes(float(bytes) / dif)) |
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@staticmethod |
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def best_block_size(elapsed_time, bytes): |
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new_min = max(bytes / 2.0, 1.0) |
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new_max = min(max(bytes * 2.0, 1.0), 4194304) # Do not surpass 4 MB |
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if elapsed_time < 0.001: |
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return long(new_max) |
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rate = bytes / elapsed_time |
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if rate > new_max: |
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return long(new_max) |
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if rate < new_min: |
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return long(new_min) |
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return long(rate) |
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@staticmethod |
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def parse_bytes(bytestr): |
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"""Parse a string indicating a byte quantity into a long integer.""" |
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matchobj = re.match(r'(?i)^(\d+(?:\.\d+)?)([kMGTPEZY]?)$', bytestr) |
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if matchobj is None: |
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return None |
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number = float(matchobj.group(1)) |
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multiplier = 1024.0 ** 'bkmgtpezy'.index(matchobj.group(2).lower()) |
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return long(round(number * multiplier)) |
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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_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' not in 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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print >>sys.stderr, message.encode(preferredencoding()) |
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def to_cons_title(self, message): |
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"""Set console/terminal window title to message.""" |
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if not self.params.get('consoletitle', False): |
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return |
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if os.name == 'nt' and ctypes.windll.kernel32.GetConsoleWindow(): |
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# c_wchar_p() might not be necessary if `message` is |
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# already of type unicode() |
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ctypes.windll.kernel32.SetConsoleTitleW(ctypes.c_wchar_p(message)) |
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elif 'TERM' in os.environ: |
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sys.stderr.write('\033]0;%s\007' % message.encode(preferredencoding())) |
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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(ur'(?u)%\(.+?\)s', self.params['outtmpl']) is None) |
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def trouble(self, message=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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""" |
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if message is not None: |
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self.to_stderr(message) |
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if not self.params.get('ignoreerrors', False): |
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raise DownloadError(message) |
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self._download_retcode = 1 |
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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 temp_name(self, filename): |
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"""Returns a temporary filename for the given filename.""" |
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if self.params.get('nopart', False) or filename == u'-' or \ |
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(os.path.exists(encodeFilename(filename)) and not os.path.isfile(encodeFilename(filename))): |
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return filename |
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return filename + u'.part' |
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def undo_temp_name(self, filename): |
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if filename.endswith(u'.part'): |
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return filename[:-len(u'.part')] |
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return filename |
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def try_rename(self, old_filename, new_filename): |
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try: |
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if old_filename == new_filename: |
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return |
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os.rename(encodeFilename(old_filename), encodeFilename(new_filename)) |
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except (IOError, OSError), err: |
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self.trouble(u'ERROR: unable to rename file') |
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def try_utime(self, filename, last_modified_hdr): |
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"""Try to set the last-modified time of the given file.""" |
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if last_modified_hdr is None: |
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return |
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if not os.path.isfile(encodeFilename(filename)): |
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return |
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timestr = last_modified_hdr |
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if timestr is None: |
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return |
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filetime = timeconvert(timestr) |
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if filetime is None: |
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return filetime |
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try: |
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os.utime(filename, (time.time(), filetime)) |
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except: |
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pass |
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return filetime |
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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, srtfn): |
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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: ' + srtfn) |
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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_destination(self, filename): |
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"""Report destination filename.""" |
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self.to_screen(u'[download] Destination: ' + filename) |
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def report_progress(self, percent_str, data_len_str, speed_str, eta_str): |
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"""Report download progress.""" |
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if self.params.get('noprogress', False): |
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return |
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self.to_screen(u'\r[download] %s of %s at %s ETA %s' % |
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(percent_str, data_len_str, speed_str, eta_str), skip_eol=True) |
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self.to_cons_title(u'youtube-dl - %s of %s at %s ETA %s' % |
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(percent_str.strip(), data_len_str.strip(), speed_str.strip(), eta_str.strip())) |
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def report_resuming_byte(self, resume_len): |
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"""Report attempt to resume at given byte.""" |
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self.to_screen(u'[download] Resuming download at byte %s' % resume_len) |
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def report_retry(self, count, retries): |
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"""Report retry in case of HTTP error 5xx""" |
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self.to_screen(u'[download] Got server HTTP error. Retrying (attempt %d of %d)...' % (count, retries)) |
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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), err: |
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self.to_screen(u'[download] The file has already been downloaded') |
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def report_unable_to_resume(self): |
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"""Report it was impossible to resume download.""" |
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self.to_screen(u'[download] Unable to resume') |
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def report_finish(self): |
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"""Report download finished.""" |
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if self.params.get('noprogress', False): |
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self.to_screen(u'[download] Download completed') |
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else: |
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self.to_screen(u'') |
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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'] = unicode(long(time.time())) |
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template_dict['autonumber'] = unicode('%05d' % self._num_downloads) |
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filename = self.params['outtmpl'] % template_dict |
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return filename |
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except (ValueError, KeyError), err: |
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self.trouble(u'ERROR: invalid system charset or erroneous output template') |
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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 and 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 and re.search(rejecttitle, title, re.IGNORECASE): |
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return u'"' + title + '" title matched reject pattern "' + rejecttitle + '"' |
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return None |
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def process_info(self, info_dict): |
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"""Process a single dictionary returned by an InfoExtractor.""" |
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info_dict['stitle'] = sanitize_filename(info_dict['title']) |
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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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print info_dict['title'].encode(preferredencoding(), 'xmlcharrefreplace') |
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if self.params.get('forceurl', False): |
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print info_dict['url'].encode(preferredencoding(), 'xmlcharrefreplace') |
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if self.params.get('forcethumbnail', False) and 'thumbnail' in info_dict: |
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print info_dict['thumbnail'].encode(preferredencoding(), 'xmlcharrefreplace') |
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if self.params.get('forcedescription', False) and 'description' in info_dict: |
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print info_dict['description'].encode(preferredencoding(), 'xmlcharrefreplace') |
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if self.params.get('forcefilename', False) and filename is not None: |
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print filename.encode(preferredencoding(), 'xmlcharrefreplace') |
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if self.params.get('forceformat', False): |
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print info_dict['format'].encode(preferredencoding(), 'xmlcharrefreplace') |
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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 |
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|
|
|
|
|
|
try: |
|
|
|
dn = os.path.dirname(encodeFilename(filename)) |
|
|
|
if dn != '' and not os.path.exists(dn): # dn is already encoded |
|
|
|
os.makedirs(dn) |
|
|
|
except (OSError, IOError), err: |
|
|
|
self.trouble(u'ERROR: unable to create directory ' + unicode(err)) |
|
|
|
return |
|
|
|
|
|
|
|
if self.params.get('writedescription', False): |
|
|
|
try: |
|
|
|
descfn = filename + u'.description' |
|
|
|
self.report_writedescription(descfn) |
|
|
|
descfile = open(encodeFilename(descfn), 'wb') |
|
|
|
try: |
|
|
|
descfile.write(info_dict['description'].encode('utf-8')) |
|
|
|
finally: |
|
|
|
descfile.close() |
|
|
|
except (OSError, IOError): |
|
|
|
self.trouble(u'ERROR: Cannot write description file ' + descfn) |
|
|
|
return |
|
|
|
|
|
|
|
if self.params.get('writesubtitles', False) and 'subtitles' in info_dict and info_dict['subtitles']: |
|
|
|
# subtitles download errors are already managed as troubles in relevant IE |
|
|
|
# that way it will silently go on when used with unsupporting IE |
|
|
|
try: |
|
|
|
srtfn = filename.rsplit('.', 1)[0] + u'.srt' |
|
|
|
self.report_writesubtitles(srtfn) |
|
|
|
srtfile = open(encodeFilename(srtfn), 'wb') |
|
|
|
try: |
|
|
|
srtfile.write(info_dict['subtitles'].encode('utf-8')) |
|
|
|
finally: |
|
|
|
srtfile.close() |
|
|
|
except (OSError, IOError): |
|
|
|
self.trouble(u'ERROR: Cannot write subtitles file ' + descfn) |
|
|
|
return |
|
|
|
|
|
|
|
if self.params.get('writeinfojson', False): |
|
|
|
infofn = filename + u'.info.json' |
|
|
|
self.report_writeinfojson(infofn) |
|
|
|
try: |
|
|
|
json.dump |
|
|
|
except (NameError,AttributeError): |
|
|
|
self.trouble(u'ERROR: No JSON encoder found. Update to Python 2.6+, setup a json module, or leave out --write-info-json.') |
|
|
|
return |
|
|
|
try: |
|
|
|
infof = open(encodeFilename(infofn), 'wb') |
|
|
|
try: |
|
|
|
json_info_dict = dict((k,v) for k,v in info_dict.iteritems() if not k in ('urlhandle',)) |
|
|
|
json.dump(json_info_dict, infof) |
|
|
|
finally: |
|
|
|
infof.close() |
|
|
|
except (OSError, IOError): |
|
|
|
self.trouble(u'ERROR: Cannot write metadata to JSON file ' + infofn) |
|
|
|
return |
|
|
|
|
|
|
|
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._do_download(filename, info_dict) |
|
|
|
except (OSError, IOError), err: |
|
|
|
raise UnavailableVideoError |
|
|
|
except (urllib2.URLError, httplib.HTTPException, socket.error), err: |
|
|
|
self.trouble(u'ERROR: unable to download video data: %s' % str(err)) |
|
|
|
return |
|
|
|
except (ContentTooShortError, ), err: |
|
|
|
self.trouble(u'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(u'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 |
|
|
|
videos = ie.extract(url) |
|
|
|
for video in videos or []: |
|
|
|
try: |
|
|
|
self.increment_downloads() |
|
|
|
self.process_info(video) |
|
|
|
except UnavailableVideoError: |
|
|
|
self.trouble(u'\nERROR: unable to download video') |
|
|
|
|
|
|
|
# Suitable InfoExtractor had been found; go to next URL |
|
|
|
break |
|
|
|
|
|
|
|
if not suitable_found: |
|
|
|
self.trouble(u'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 _download_with_rtmpdump(self, filename, url, player_url): |
|
|
|
self.report_destination(filename) |
|
|
|
tmpfilename = self.temp_name(filename) |
|
|
|
|
|
|
|
# Check for rtmpdump first |
|
|
|
try: |
|
|
|
subprocess.call(['rtmpdump', '-h'], stdout=(file(os.path.devnull, 'w')), stderr=subprocess.STDOUT) |
|
|
|
except (OSError, IOError): |
|
|
|
self.trouble(u'ERROR: RTMP download detected but "rtmpdump" could not be run') |
|
|
|
return False |
|
|
|
|
|
|
|
# Download using rtmpdump. rtmpdump returns exit code 2 when |
|
|
|
# the connection was interrumpted and resuming appears to be |
|
|
|
# possible. This is part of rtmpdump's normal usage, AFAIK. |
|
|
|
basic_args = ['rtmpdump', '-q'] + [[], ['-W', player_url]][player_url is not None] + ['-r', url, '-o', tmpfilename] |
|
|
|
args = basic_args + [[], ['-e', '-k', '1']][self.params.get('continuedl', False)] |
|
|
|
if self.params.get('verbose', False): |
|
|
|
try: |
|
|
|
import pipes |
|
|
|
shell_quote = lambda args: ' '.join(map(pipes.quote, args)) |
|
|
|
except ImportError: |
|
|
|
shell_quote = repr |
|
|
|
self.to_screen(u'[debug] rtmpdump command line: ' + shell_quote(args)) |
|
|
|
retval = subprocess.call(args) |
|
|
|
while retval == 2 or retval == 1: |
|
|
|
prevsize = os.path.getsize(encodeFilename(tmpfilename)) |
|
|
|
self.to_screen(u'\r[rtmpdump] %s bytes' % prevsize, skip_eol=True) |
|
|
|
time.sleep(5.0) # This seems to be needed |
|
|
|
retval = subprocess.call(basic_args + ['-e'] + [[], ['-k', '1']][retval == 1]) |
|
|
|
cursize = os.path.getsize(encodeFilename(tmpfilename)) |
|
|
|
if prevsize == cursize and retval == 1: |
|
|
|
break |
|
|
|
# Some rtmp streams seem abort after ~ 99.8%. Don't complain for those |
|
|
|
if prevsize == cursize and retval == 2 and cursize > 1024: |
|
|
|
self.to_screen(u'\r[rtmpdump] Could not download the whole video. This can happen for some advertisements.') |
|
|
|
retval = 0 |
|
|
|
break |
|
|
|
if retval == 0: |
|
|
|
self.to_screen(u'\r[rtmpdump] %s bytes' % os.path.getsize(encodeFilename(tmpfilename))) |
|
|
|
self.try_rename(tmpfilename, filename) |
|
|
|
return True |
|
|
|
else: |
|
|
|
self.trouble(u'\nERROR: rtmpdump exited with code %d' % retval) |
|
|
|
return False |
|
|
|
|
|
|
|
def _do_download(self, filename, info_dict): |
|
|
|
url = info_dict['url'] |
|
|
|
player_url = info_dict.get('player_url', None) |
|
|
|
|
|
|
|
# Check file already present |
|
|
|
if self.params.get('continuedl', False) and os.path.isfile(encodeFilename(filename)) and not self.params.get('nopart', False): |
|
|
|
self.report_file_already_downloaded(filename) |
|
|
|
return True |
|
|
|
|
|
|
|
# Attempt to download using rtmpdump |
|
|
|
if url.startswith('rtmp'): |
|
|
|
return self._download_with_rtmpdump(filename, url, player_url) |
|
|
|
|
|
|
|
tmpfilename = self.temp_name(filename) |
|
|
|
stream = None |
|
|
|
|
|
|
|
# Do not include the Accept-Encoding header |
|
|
|
headers = {'Youtubedl-no-compression': 'True'} |
|
|
|
basic_request = urllib2.Request(url, None, headers) |
|
|
|
request = urllib2.Request(url, None, headers) |
|
|
|
|
|
|
|
# Establish possible resume length |
|
|
|
if os.path.isfile(encodeFilename(tmpfilename)): |
|
|
|
resume_len = os.path.getsize(encodeFilename(tmpfilename)) |
|
|
|
else: |
|
|
|
resume_len = 0 |
|
|
|
|
|
|
|
open_mode = 'wb' |
|
|
|
if resume_len != 0: |
|
|
|
if self.params.get('continuedl', False): |
|
|
|
self.report_resuming_byte(resume_len) |
|
|
|
request.add_header('Range','bytes=%d-' % resume_len) |
|
|
|
open_mode = 'ab' |
|
|
|
else: |
|
|
|
resume_len = 0 |
|
|
|
|
|
|
|
count = 0 |
|
|
|
retries = self.params.get('retries', 0) |
|
|
|
while count <= retries: |
|
|
|
# Establish connection |
|
|
|
try: |
|
|
|
if count == 0 and 'urlhandle' in info_dict: |
|
|
|
data = info_dict['urlhandle'] |
|
|
|
data = urllib2.urlopen(request) |
|
|
|
break |
|
|
|
except (urllib2.HTTPError, ), err: |
|
|
|
if (err.code < 500 or err.code >= 600) and err.code != 416: |
|
|
|
# Unexpected HTTP error |
|
|
|
raise |
|
|
|
elif err.code == 416: |
|
|
|
# Unable to resume (requested range not satisfiable) |
|
|
|
try: |
|
|
|
# Open the connection again without the range header |
|
|
|
data = urllib2.urlopen(basic_request) |
|
|
|
content_length = data.info()['Content-Length'] |
|
|
|
except (urllib2.HTTPError, ), err: |
|
|
|
if err.code < 500 or err.code >= 600: |
|
|
|
raise |
|
|
|
else: |
|
|
|
# Examine the reported length |
|
|
|
if (content_length is not None and |
|
|
|
(resume_len - 100 < long(content_length) < resume_len + 100)): |
|
|
|
# The file had already been fully downloaded. |
|
|
|
# Explanation to the above condition: in issue #175 it was revealed that |
|
|
|
# YouTube sometimes adds or removes a few bytes from the end of the file, |
|
|
|
# changing the file size slightly and causing problems for some users. So |
|
|
|
# I decided to implement a suggested change and consider the file |
|
|
|
# completely downloaded if the file size differs less than 100 bytes from |
|
|
|
# the one in the hard drive. |
|
|
|
self.report_file_already_downloaded(filename) |
|
|
|
self.try_rename(tmpfilename, filename) |
|
|
|
return True |
|
|
|
else: |
|
|
|
# The length does not match, we start the download over |
|
|
|
self.report_unable_to_resume() |
|
|
|
open_mode = 'wb' |
|
|
|
break |
|
|
|
# Retry |
|
|
|
count += 1 |
|
|
|
if count <= retries: |
|
|
|
self.report_retry(count, retries) |
|
|
|
|
|
|
|
if count > retries: |
|
|
|
self.trouble(u'ERROR: giving up after %s retries' % retries) |
|
|
|
return False |
|
|
|
|
|
|
|
data_len = data.info().get('Content-length', None) |
|
|
|
if data_len is not None: |
|
|
|
data_len = long(data_len) + resume_len |
|
|
|
data_len_str = self.format_bytes(data_len) |
|
|
|
byte_counter = 0 + resume_len |
|
|
|
block_size = 1024 |
|
|
|
start = time.time() |
|
|
|
while True: |
|
|
|
# Download and write |
|
|
|
before = time.time() |
|
|
|
data_block = data.read(block_size) |
|
|
|
after = time.time() |
|
|
|
if len(data_block) == 0: |
|
|
|
break |
|
|
|
byte_counter += len(data_block) |
|
|
|
|
|
|
|
# Open file just in time |
|
|
|
if stream is None: |
|
|
|
try: |
|
|
|
(stream, tmpfilename) = sanitize_open(tmpfilename, open_mode) |
|
|
|
assert stream is not None |
|
|
|
filename = self.undo_temp_name(tmpfilename) |
|
|
|
self.report_destination(filename) |
|
|
|
except (OSError, IOError), err: |
|
|
|
self.trouble(u'ERROR: unable to open for writing: %s' % str(err)) |
|
|
|
return False |
|
|
|
try: |
|
|
|
stream.write(data_block) |
|
|
|
except (IOError, OSError), err: |
|
|
|
self.trouble(u'\nERROR: unable to write data: %s' % str(err)) |
|
|
|
return False |
|
|
|
block_size = self.best_block_size(after - before, len(data_block)) |
|
|
|
|
|
|
|
# Progress message |
|
|
|
speed_str = self.calc_speed(start, time.time(), byte_counter - resume_len) |
|
|
|
if data_len is None: |
|
|
|
self.report_progress('Unknown %', data_len_str, speed_str, 'Unknown ETA') |
|
|
|
else: |
|
|
|
percent_str = self.calc_percent(byte_counter, data_len) |
|
|
|
eta_str = self.calc_eta(start, time.time(), data_len - resume_len, byte_counter - resume_len) |
|
|
|
self.report_progress(percent_str, data_len_str, speed_str, eta_str) |
|
|
|
|
|
|
|
# Apply rate limit |
|
|
|
self.slow_down(start, byte_counter - resume_len) |
|
|
|
|
|
|
|
if stream is None: |
|
|
|
self.trouble(u'\nERROR: Did not get any data blocks') |
|
|
|
return False |
|
|
|
stream.close() |
|
|
|
self.report_finish() |
|
|
|
if data_len is not None and byte_counter != data_len: |
|
|
|
raise ContentTooShortError(byte_counter, long(data_len)) |
|
|
|
self.try_rename(tmpfilename, filename) |
|
|
|
|
|
|
|
# Update file modification time |
|
|
|
if self.params.get('updatetime', True): |
|
|
|
info_dict['filetime'] = self.try_utime(filename, data.info().get('last-modified', None)) |
|
|
|
|
|
|
|
return True |