35d217133f
When using youtube-dl from another python script with the quiet option on, and a post procesor for extract the audio. The message of deleting video shows in the first script logs (as it goes to stderr). There is no way to keep this quiet as it's treated as an error, even if, for me, it's not.
819 lines
34 KiB
Python
819 lines
34 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 math
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import io
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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 traceback
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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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restrictfilenames: Do not allow "&" and spaces in file 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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buffersize: Size of download buffer in bytes.
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noresizebuffer: Do not automatically resize the download buffer.
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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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test: Download only first bytes to test the downloader.
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keepvideo: Keep the video file after post-processing
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min_filesize: Skip files smaller than this size
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max_filesize: Skip files larger than this size
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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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if '%(stitle)s' in self.params['outtmpl']:
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self.to_stderr(u'WARNING: %(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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@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 = int(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 = int((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 int(new_max)
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rate = bytes / elapsed_time
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if rate > new_max:
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return int(new_max)
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if rate < new_min:
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return int(new_min)
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return int(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 an 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 int(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' 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 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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self.to_screen('\033]0;%s\007' % message, skip_eol=True)
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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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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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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) as 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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if self.params.get('progress_with_newline', False):
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self.to_screen(u'[download] %s of %s at %s ETA %s' %
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(percent_str, data_len_str, speed_str, eta_str))
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else:
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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) as 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'] = int(time.time())
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template_dict['autonumber'] = u'%05d' % self._num_downloads
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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 (ValueError, KeyError) as 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:
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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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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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# 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('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
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try:
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dn = os.path.dirname(encodeFilename(filename))
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if dn != '' and not os.path.exists(dn): # dn is already encoded
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os.makedirs(dn)
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except (OSError, IOError) as err:
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self.trouble(u'ERROR: unable to create directory ' + compat_str(err))
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return
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if self.params.get('writedescription', False):
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try:
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descfn = filename + u'.description'
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self.report_writedescription(descfn)
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with io.open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
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descfile.write(info_dict['description'])
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except (OSError, IOError):
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self.trouble(u'ERROR: Cannot write description file ' + descfn)
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return
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if self.params.get('writesubtitles', False) and 'subtitles' in info_dict and info_dict['subtitles']:
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# subtitles download errors are already managed as troubles in relevant IE
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# that way it will silently go on when used with unsupporting IE
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try:
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srtfn = filename.rsplit('.', 1)[0] + u'.srt'
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self.report_writesubtitles(srtfn)
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with io.open(encodeFilename(srtfn), 'w', encoding='utf-8') as srtfile:
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srtfile.write(info_dict['subtitles'])
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except (OSError, IOError):
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self.trouble(u'ERROR: Cannot write subtitles file ' + descfn)
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return
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if self.params.get('writeinfojson', False):
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infofn = filename + u'.info.json'
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self.report_writeinfojson(infofn)
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try:
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json_info_dict = dict((k, v) for k,v in info_dict.items() if not k in ['urlhandle'])
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write_json_file(json_info_dict, encodeFilename(infofn))
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except (OSError, IOError):
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self.trouble(u'ERROR: Cannot write metadata to JSON file ' + infofn)
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return
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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) as err:
|
|
raise UnavailableVideoError()
|
|
except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
|
|
self.trouble(u'ERROR: unable to download video data: %s' % str(err))
|
|
return
|
|
except (ContentTooShortError, ) as 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) as 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
|
|
|
|
# Warn if the _WORKING attribute is False
|
|
if not ie.working():
|
|
self.to_stderr(u'WARNING: the program functionality for this site has been marked as broken, '
|
|
u'and will probably not work. If you want to go on, use the -i option.')
|
|
|
|
# Suitable InfoExtractor found
|
|
suitable_found = True
|
|
|
|
# Extract information from URL and process it
|
|
try:
|
|
videos = ie.extract(url)
|
|
except ExtractorError as de: # An error we somewhat expected
|
|
self.trouble(u'ERROR: ' + compat_str(de), de.format_traceback())
|
|
break
|
|
except Exception as e:
|
|
if self.params.get('ignoreerrors', False):
|
|
self.trouble(u'ERROR: ' + compat_str(e), tb=compat_str(traceback.format_exc()))
|
|
break
|
|
else:
|
|
raise
|
|
|
|
if len(videos or []) > 1 and self.fixed_template():
|
|
raise SameFileError(self.params['outtmpl'])
|
|
|
|
for video in videos or []:
|
|
video['extractor'] = ie.IE_NAME
|
|
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 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.to_stderr(u'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.to_stderr(u'WARNING: Unable to remove downloaded video file')
|
|
|
|
def _download_with_rtmpdump(self, filename, url, player_url, page_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', '-r', url, '-o', tmpfilename]
|
|
if player_url is not None:
|
|
basic_args += ['-W', player_url]
|
|
if page_url is not None:
|
|
basic_args += ['--pageUrl', page_url]
|
|
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:
|
|
fsize = os.path.getsize(encodeFilename(tmpfilename))
|
|
self.to_screen(u'\r[rtmpdump] %s bytes' % fsize)
|
|
self.try_rename(tmpfilename, filename)
|
|
self._hook_progress({
|
|
'downloaded_bytes': fsize,
|
|
'total_bytes': fsize,
|
|
'filename': filename,
|
|
'status': 'finished',
|
|
})
|
|
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']
|
|
|
|
# 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)
|
|
self._hook_progress({
|
|
'filename': filename,
|
|
'status': 'finished',
|
|
})
|
|
return True
|
|
|
|
# Attempt to download using rtmpdump
|
|
if url.startswith('rtmp'):
|
|
return self._download_with_rtmpdump(filename, url,
|
|
info_dict.get('player_url', None),
|
|
info_dict.get('page_url', None))
|
|
|
|
tmpfilename = self.temp_name(filename)
|
|
stream = None
|
|
|
|
# Do not include the Accept-Encoding header
|
|
headers = {'Youtubedl-no-compression': 'True'}
|
|
if 'user_agent' in info_dict:
|
|
headers['Youtubedl-user-agent'] = info_dict['user_agent']
|
|
basic_request = compat_urllib_request.Request(url, None, headers)
|
|
request = compat_urllib_request.Request(url, None, headers)
|
|
|
|
if self.params.get('test', False):
|
|
request.add_header('Range','bytes=0-10240')
|
|
|
|
# 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 = compat_urllib_request.urlopen(request)
|
|
break
|
|
except (compat_urllib_error.HTTPError, ) as 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 = compat_urllib_request.urlopen(basic_request)
|
|
content_length = data.info()['Content-Length']
|
|
except (compat_urllib_error.HTTPError, ) as 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 < int(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)
|
|
self._hook_progress({
|
|
'filename': filename,
|
|
'status': 'finished',
|
|
})
|
|
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 = int(data_len) + resume_len
|
|
min_data_len = self.params.get("min_filesize", None)
|
|
max_data_len = self.params.get("max_filesize", None)
|
|
if min_data_len is not None and data_len < min_data_len:
|
|
self.to_screen(u'\r[download] File is smaller than min-filesize (%s bytes < %s bytes). Aborting.' % (data_len, min_data_len))
|
|
return False
|
|
if max_data_len is not None and data_len > max_data_len:
|
|
self.to_screen(u'\r[download] File is larger than max-filesize (%s bytes > %s bytes). Aborting.' % (data_len, max_data_len))
|
|
return False
|
|
|
|
data_len_str = self.format_bytes(data_len)
|
|
byte_counter = 0 + resume_len
|
|
block_size = self.params.get('buffersize', 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) as err:
|
|
self.trouble(u'ERROR: unable to open for writing: %s' % str(err))
|
|
return False
|
|
try:
|
|
stream.write(data_block)
|
|
except (IOError, OSError) as err:
|
|
self.trouble(u'\nERROR: unable to write data: %s' % str(err))
|
|
return False
|
|
if not self.params.get('noresizebuffer', 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)
|
|
|
|
self._hook_progress({
|
|
'downloaded_bytes': byte_counter,
|
|
'total_bytes': data_len,
|
|
'tmpfilename': tmpfilename,
|
|
'filename': filename,
|
|
'status': 'downloading',
|
|
})
|
|
|
|
# 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, int(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))
|
|
|
|
self._hook_progress({
|
|
'downloaded_bytes': byte_counter,
|
|
'total_bytes': byte_counter,
|
|
'filename': filename,
|
|
'status': 'finished',
|
|
})
|
|
|
|
return True
|
|
|
|
def _hook_progress(self, status):
|
|
for ph in self._progress_hooks:
|
|
ph(status)
|
|
|
|
def add_progress_hook(self, ph):
|
|
""" ph gets called on download progress, with a dictionary with the entries
|
|
* filename: The final filename
|
|
* status: One of "downloading" and "finished"
|
|
|
|
It can also have some of the following entries:
|
|
|
|
* downloaded_bytes: Bytes on disks
|
|
* total_bytes: Total bytes, None if unknown
|
|
* tmpfilename: The filename we're currently writing to
|
|
|
|
Hooks are guaranteed to be called at least once (with status "finished")
|
|
if the download is successful.
|
|
"""
|
|
self._progress_hooks.append(ph)
|