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yt-dlp/youtube_dl/FileDownloader.py
2013-06-19 22:13:16 +02:00

1063 lines
46 KiB
Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-
from __future__ import absolute_import
import math
import io
import os
import re
import shutil
import socket
import subprocess
import sys
import time
import traceback
if os.name == 'nt':
import ctypes
from .utils import *
from .InfoExtractors import get_info_extractor
class FileDownloader(object):
"""File Downloader class.
File downloader objects are the ones responsible of downloading the
actual video file and writing it to disk if the user has requested
it, among some other tasks. In most cases there should be one per
program. As, given a video URL, the downloader doesn't know how to
extract all the needed information, task that InfoExtractors do, it
has to pass the URL to one of them.
For this, file downloader objects have a method that allows
InfoExtractors to be registered in a given order. When it is passed
a URL, the file downloader handles it to the first InfoExtractor it
finds that reports being able to handle it. The InfoExtractor extracts
all the information about the video or videos the URL refers to, and
asks the FileDownloader to process the video information, possibly
downloading the video.
File downloaders accept a lot of parameters. In order not to saturate
the object constructor with arguments, it receives a dictionary of
options instead. These options are available through the params
attribute for the InfoExtractors to use. The FileDownloader also
registers itself as the downloader in charge for the InfoExtractors
that are added to it, so this is a "mutual registration".
Available options:
username: Username for authentication purposes.
password: Password for authentication purposes.
usenetrc: Use netrc for authentication instead.
quiet: Do not print messages to stdout.
forceurl: Force printing final URL.
forcetitle: Force printing title.
forceid: Force printing ID.
forcethumbnail: Force printing thumbnail URL.
forcedescription: Force printing description.
forcefilename: Force printing final filename.
simulate: Do not download the video files.
format: Video format code.
format_limit: Highest quality format to try.
outtmpl: Template for output names.
restrictfilenames: Do not allow "&" and spaces in file names
ignoreerrors: Do not stop on download errors.
ratelimit: Download speed limit, in bytes/sec.
nooverwrites: Prevent overwriting files.
retries: Number of times to retry for HTTP error 5xx
buffersize: Size of download buffer in bytes.
noresizebuffer: Do not automatically resize the download buffer.
continuedl: Try to continue downloads if possible.
noprogress: Do not print the progress bar.
playliststart: Playlist item to start at.
playlistend: Playlist item to end at.
matchtitle: Download only matching titles.
rejecttitle: Reject downloads for matching titles.
logtostderr: Log messages to stderr instead of stdout.
consoletitle: Display progress in console window's titlebar.
nopart: Do not use temporary .part files.
updatetime: Use the Last-modified header to set output file timestamps.
writedescription: Write the video description to a .description file
writeinfojson: Write the video description to a .info.json file
writethumbnail: Write the thumbnail image to a file
writesubtitles: Write the video subtitles to a file
allsubtitles: Downloads all the subtitles of the video
listsubtitles: Lists all available subtitles for the video
subtitlesformat: Subtitle format [sbv/srt] (default=srt)
subtitleslang: Language of the subtitles to download
test: Download only first bytes to test the downloader.
keepvideo: Keep the video file after post-processing
min_filesize: Skip files smaller than this size
max_filesize: Skip files larger than this size
daterange: A DateRange object, download only if the upload_date is in the range.
skip_download: Skip the actual download of the video file
"""
params = None
_ies = []
_pps = []
_download_retcode = None
_num_downloads = None
_screen_file = None
def __init__(self, params):
"""Create a FileDownloader object with the given options."""
self._ies = []
self._pps = []
self._progress_hooks = []
self._download_retcode = 0
self._num_downloads = 0
self._screen_file = [sys.stdout, sys.stderr][params.get('logtostderr', False)]
self.params = params
if '%(stitle)s' in self.params['outtmpl']:
self.report_warning(u'%(stitle)s is deprecated. Use the %(title)s and the --restrict-filenames flag(which also secures %(uploader)s et al) instead.')
@staticmethod
def format_bytes(bytes):
if bytes is None:
return 'N/A'
if type(bytes) is str:
bytes = float(bytes)
if bytes == 0.0:
exponent = 0
else:
exponent = int(math.log(bytes, 1024.0))
suffix = ['B','KiB','MiB','GiB','TiB','PiB','EiB','ZiB','YiB'][exponent]
converted = float(bytes) / float(1024 ** exponent)
return '%.2f%s' % (converted, suffix)
@staticmethod
def calc_percent(byte_counter, data_len):
if data_len is None:
return '---.-%'
return '%6s' % ('%3.1f%%' % (float(byte_counter) / float(data_len) * 100.0))
@staticmethod
def calc_eta(start, now, total, current):
if total is None:
return '--:--'
dif = now - start
if current == 0 or dif < 0.001: # One millisecond
return '--:--'
rate = float(current) / dif
eta = int((float(total) - float(current)) / rate)
(eta_mins, eta_secs) = divmod(eta, 60)
if eta_mins > 99:
return '--:--'
return '%02d:%02d' % (eta_mins, eta_secs)
@staticmethod
def calc_speed(start, now, bytes):
dif = now - start
if bytes == 0 or dif < 0.001: # One millisecond
return '%10s' % '---b/s'
return '%10s' % ('%s/s' % FileDownloader.format_bytes(float(bytes) / dif))
@staticmethod
def best_block_size(elapsed_time, bytes):
new_min = max(bytes / 2.0, 1.0)
new_max = min(max(bytes * 2.0, 1.0), 4194304) # Do not surpass 4 MB
if elapsed_time < 0.001:
return int(new_max)
rate = bytes / elapsed_time
if rate > new_max:
return int(new_max)
if rate < new_min:
return int(new_min)
return int(rate)
@staticmethod
def parse_bytes(bytestr):
"""Parse a string indicating a byte quantity into an integer."""
matchobj = re.match(r'(?i)^(\d+(?:\.\d+)?)([kMGTPEZY]?)$', bytestr)
if matchobj is None:
return None
number = float(matchobj.group(1))
multiplier = 1024.0 ** 'bkmgtpezy'.index(matchobj.group(2).lower())
return int(round(number * multiplier))
def add_info_extractor(self, ie):
"""Add an InfoExtractor object to the end of the list."""
self._ies.append(ie)
ie.set_downloader(self)
def add_post_processor(self, pp):
"""Add a PostProcessor object to the end of the chain."""
self._pps.append(pp)
pp.set_downloader(self)
def to_screen(self, message, skip_eol=False):
"""Print message to stdout if not in quiet mode."""
assert type(message) == type(u'')
if not self.params.get('quiet', False):
terminator = [u'\n', u''][skip_eol]
output = message + terminator
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
output = output.encode(preferredencoding(), 'ignore')
self._screen_file.write(output)
self._screen_file.flush()
def to_stderr(self, message):
"""Print message to stderr."""
assert type(message) == type(u'')
output = message + u'\n'
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
output = output.encode(preferredencoding())
sys.stderr.write(output)
def to_cons_title(self, message):
"""Set console/terminal window title to message."""
if not self.params.get('consoletitle', False):
return
if os.name == 'nt' and ctypes.windll.kernel32.GetConsoleWindow():
# c_wchar_p() might not be necessary if `message` is
# already of type unicode()
ctypes.windll.kernel32.SetConsoleTitleW(ctypes.c_wchar_p(message))
elif 'TERM' in os.environ:
self.to_screen('\033]0;%s\007' % message, skip_eol=True)
def fixed_template(self):
"""Checks if the output template is fixed."""
return (re.search(u'(?u)%\\(.+?\\)s', self.params['outtmpl']) is None)
def trouble(self, message=None, tb=None):
"""Determine action to take when a download problem appears.
Depending on if the downloader has been configured to ignore
download errors or not, this method may throw an exception or
not when errors are found, after printing the message.
tb, if given, is additional traceback information.
"""
if message is not None:
self.to_stderr(message)
if self.params.get('verbose'):
if tb is None:
if sys.exc_info()[0]: # if .trouble has been called from an except block
tb = u''
if hasattr(sys.exc_info()[1], 'exc_info') and sys.exc_info()[1].exc_info[0]:
tb += u''.join(traceback.format_exception(*sys.exc_info()[1].exc_info))
tb += compat_str(traceback.format_exc())
else:
tb_data = traceback.format_list(traceback.extract_stack())
tb = u''.join(tb_data)
self.to_stderr(tb)
if not self.params.get('ignoreerrors', False):
if sys.exc_info()[0] and hasattr(sys.exc_info()[1], 'exc_info') and sys.exc_info()[1].exc_info[0]:
exc_info = sys.exc_info()[1].exc_info
else:
exc_info = sys.exc_info()
raise DownloadError(message, exc_info)
self._download_retcode = 1
def report_warning(self, message):
'''
Print the message to stderr, it will be prefixed with 'WARNING:'
If stderr is a tty file the 'WARNING:' will be colored
'''
if sys.stderr.isatty() and os.name != 'nt':
_msg_header=u'\033[0;33mWARNING:\033[0m'
else:
_msg_header=u'WARNING:'
warning_message=u'%s %s' % (_msg_header,message)
self.to_stderr(warning_message)
def report_error(self, message, tb=None):
'''
Do the same as trouble, but prefixes the message with 'ERROR:', colored
in red if stderr is a tty file.
'''
if sys.stderr.isatty() and os.name != 'nt':
_msg_header = u'\033[0;31mERROR:\033[0m'
else:
_msg_header = u'ERROR:'
error_message = u'%s %s' % (_msg_header, message)
self.trouble(error_message, tb)
def slow_down(self, start_time, byte_counter):
"""Sleep if the download speed is over the rate limit."""
rate_limit = self.params.get('ratelimit', None)
if rate_limit is None or byte_counter == 0:
return
now = time.time()
elapsed = now - start_time
if elapsed <= 0.0:
return
speed = float(byte_counter) / elapsed
if speed > rate_limit:
time.sleep((byte_counter - rate_limit * (now - start_time)) / rate_limit)
def temp_name(self, filename):
"""Returns a temporary filename for the given filename."""
if self.params.get('nopart', False) or filename == u'-' or \
(os.path.exists(encodeFilename(filename)) and not os.path.isfile(encodeFilename(filename))):
return filename
return filename + u'.part'
def undo_temp_name(self, filename):
if filename.endswith(u'.part'):
return filename[:-len(u'.part')]
return filename
def try_rename(self, old_filename, new_filename):
try:
if old_filename == new_filename:
return
os.rename(encodeFilename(old_filename), encodeFilename(new_filename))
except (IOError, OSError) as err:
self.report_error(u'unable to rename file')
def try_utime(self, filename, last_modified_hdr):
"""Try to set the last-modified time of the given file."""
if last_modified_hdr is None:
return
if not os.path.isfile(encodeFilename(filename)):
return
timestr = last_modified_hdr
if timestr is None:
return
filetime = timeconvert(timestr)
if filetime is None:
return filetime
# Ignore obviously invalid dates
if filetime == 0:
return
try:
os.utime(filename, (time.time(), filetime))
except:
pass
return filetime
def report_writedescription(self, descfn):
""" Report that the description file is being written """
self.to_screen(u'[info] Writing video description to: ' + descfn)
def report_writesubtitles(self, sub_filename):
""" Report that the subtitles file is being written """
self.to_screen(u'[info] Writing video subtitles to: ' + sub_filename)
def report_writeinfojson(self, infofn):
""" Report that the metadata file has been written """
self.to_screen(u'[info] Video description metadata as JSON to: ' + infofn)
def report_destination(self, filename):
"""Report destination filename."""
self.to_screen(u'[download] Destination: ' + filename)
def report_progress(self, percent_str, data_len_str, speed_str, eta_str):
"""Report download progress."""
if self.params.get('noprogress', False):
return
clear_line = (u'\x1b[K' if sys.stderr.isatty() and os.name != 'nt' else u'')
if self.params.get('progress_with_newline', False):
self.to_screen(u'[download] %s of %s at %s ETA %s' %
(percent_str, data_len_str, speed_str, eta_str))
else:
self.to_screen(u'\r%s[download] %s of %s at %s ETA %s' %
(clear_line, percent_str, data_len_str, speed_str, eta_str), skip_eol=True)
self.to_cons_title(u'youtube-dl - %s of %s at %s ETA %s' %
(percent_str.strip(), data_len_str.strip(), speed_str.strip(), eta_str.strip()))
def report_resuming_byte(self, resume_len):
"""Report attempt to resume at given byte."""
self.to_screen(u'[download] Resuming download at byte %s' % resume_len)
def report_retry(self, count, retries):
"""Report retry in case of HTTP error 5xx"""
self.to_screen(u'[download] Got server HTTP error. Retrying (attempt %d of %d)...' % (count, retries))
def report_file_already_downloaded(self, file_name):
"""Report file has already been fully downloaded."""
try:
self.to_screen(u'[download] %s has already been downloaded' % file_name)
except (UnicodeEncodeError) as err:
self.to_screen(u'[download] The file has already been downloaded')
def report_unable_to_resume(self):
"""Report it was impossible to resume download."""
self.to_screen(u'[download] Unable to resume')
def report_finish(self):
"""Report download finished."""
if self.params.get('noprogress', False):
self.to_screen(u'[download] Download completed')
else:
self.to_screen(u'')
def increment_downloads(self):
"""Increment the ordinal that assigns a number to each file."""
self._num_downloads += 1
def prepare_filename(self, info_dict):
"""Generate the output filename."""
try:
template_dict = dict(info_dict)
template_dict['epoch'] = int(time.time())
autonumber_size = self.params.get('autonumber_size')
if autonumber_size is None:
autonumber_size = 5
autonumber_templ = u'%0' + str(autonumber_size) + u'd'
template_dict['autonumber'] = autonumber_templ % self._num_downloads
if template_dict['playlist_index'] is not None:
template_dict['playlist_index'] = u'%05d' % template_dict['playlist_index']
sanitize = lambda k,v: sanitize_filename(
u'NA' if v is None else compat_str(v),
restricted=self.params.get('restrictfilenames'),
is_id=(k==u'id'))
template_dict = dict((k, sanitize(k, v)) for k,v in template_dict.items())
filename = self.params['outtmpl'] % template_dict
return filename
except KeyError as err:
self.report_error(u'Erroneous output template')
return None
except ValueError as err:
self.report_error(u'Insufficient system charset ' + repr(preferredencoding()))
return None
def _match_entry(self, info_dict):
""" Returns None iff the file should be downloaded """
title = info_dict['title']
matchtitle = self.params.get('matchtitle', False)
if matchtitle:
if not re.search(matchtitle, title, re.IGNORECASE):
return u'[download] "' + title + '" title did not match pattern "' + matchtitle + '"'
rejecttitle = self.params.get('rejecttitle', False)
if rejecttitle:
if re.search(rejecttitle, title, re.IGNORECASE):
return u'"' + title + '" title matched reject pattern "' + rejecttitle + '"'
date = info_dict.get('upload_date', None)
if date is not None:
dateRange = self.params.get('daterange', DateRange())
if date not in dateRange:
return u'[download] %s upload date is not in range %s' % (date_from_str(date).isoformat(), dateRange)
return None
def extract_info(self, url, download=True, ie_key=None, extra_info={}):
'''
Returns a list with a dictionary for each video we find.
If 'download', also downloads the videos.
extra_info is a dict containing the extra values to add to each result
'''
if ie_key:
ie = get_info_extractor(ie_key)()
ie.set_downloader(self)
ies = [ie]
else:
ies = self._ies
for ie in ies:
if not ie.suitable(url):
continue
if not ie.working():
self.report_warning(u'The program functionality for this site has been marked as broken, '
u'and will probably not work.')
try:
ie_result = ie.extract(url)
if ie_result is None: # Finished already (backwards compatibility; listformats and friends should be moved here)
break
if isinstance(ie_result, list):
# Backwards compatibility: old IE result format
for result in ie_result:
result.update(extra_info)
ie_result = {
'_type': 'compat_list',
'entries': ie_result,
}
else:
ie_result.update(extra_info)
if 'extractor' not in ie_result:
ie_result['extractor'] = ie.IE_NAME
return self.process_ie_result(ie_result, download=download)
except ExtractorError as de: # An error we somewhat expected
self.report_error(compat_str(de), de.format_traceback())
break
except Exception as e:
if self.params.get('ignoreerrors', False):
self.report_error(compat_str(e), tb=compat_str(traceback.format_exc()))
break
else:
raise
else:
self.report_error(u'no suitable InfoExtractor: %s' % url)
def process_ie_result(self, ie_result, download=True, extra_info={}):
"""
Take the result of the ie(may be modified) and resolve all unresolved
references (URLs, playlist items).
It will also download the videos if 'download'.
Returns the resolved ie_result.
"""
result_type = ie_result.get('_type', 'video') # If not given we suppose it's a video, support the default old system
if result_type == 'video':
if 'playlist' not in ie_result:
# It isn't part of a playlist
ie_result['playlist'] = None
ie_result['playlist_index'] = None
if download:
self.process_info(ie_result)
return ie_result
elif result_type == 'url':
# We have to add extra_info to the results because it may be
# contained in a playlist
return self.extract_info(ie_result['url'],
download,
ie_key=ie_result.get('ie_key'),
extra_info=extra_info)
elif result_type == 'playlist':
# We process each entry in the playlist
playlist = ie_result.get('title', None) or ie_result.get('id', None)
self.to_screen(u'[download] Downloading playlist: %s' % playlist)
playlist_results = []
n_all_entries = len(ie_result['entries'])
playliststart = self.params.get('playliststart', 1) - 1
playlistend = self.params.get('playlistend', -1)
if playlistend == -1:
entries = ie_result['entries'][playliststart:]
else:
entries = ie_result['entries'][playliststart:playlistend]
n_entries = len(entries)
self.to_screen(u"[%s] playlist '%s': Collected %d video ids (downloading %d of them)" %
(ie_result['extractor'], playlist, n_all_entries, n_entries))
for i,entry in enumerate(entries,1):
self.to_screen(u'[download] Downloading video #%s of %s' %(i, n_entries))
extra = {
'playlist': playlist,
'playlist_index': i + playliststart,
}
if not 'extractor' in entry:
# We set the extractor, if it's an url it will be set then to
# the new extractor, but if it's already a video we must make
# sure it's present: see issue #877
entry['extractor'] = ie_result['extractor']
entry_result = self.process_ie_result(entry,
download=download,
extra_info=extra)
playlist_results.append(entry_result)
ie_result['entries'] = playlist_results
return ie_result
elif result_type == 'compat_list':
def _fixup(r):
r.setdefault('extractor', ie_result['extractor'])
return r
ie_result['entries'] = [
self.process_ie_result(_fixup(r), download=download)
for r in ie_result['entries']
]
return ie_result
else:
raise Exception('Invalid result type: %s' % result_type)
def process_info(self, info_dict):
"""Process a single resolved IE result."""
assert info_dict.get('_type', 'video') == 'video'
#We increment the download the download count here to match the previous behaviour.
self.increment_downloads()
info_dict['fulltitle'] = info_dict['title']
if len(info_dict['title']) > 200:
info_dict['title'] = info_dict['title'][:197] + u'...'
# Keep for backwards compatibility
info_dict['stitle'] = info_dict['title']
if not 'format' in info_dict:
info_dict['format'] = info_dict['ext']
reason = self._match_entry(info_dict)
if reason is not None:
self.to_screen(u'[download] ' + reason)
return
max_downloads = self.params.get('max_downloads')
if max_downloads is not None:
if self._num_downloads > int(max_downloads):
raise MaxDownloadsReached()
filename = self.prepare_filename(info_dict)
# Forced printings
if self.params.get('forcetitle', False):
compat_print(info_dict['title'])
if self.params.get('forceid', False):
compat_print(info_dict['id'])
if self.params.get('forceurl', False):
compat_print(info_dict['url'])
if self.params.get('forcethumbnail', False) and 'thumbnail' in info_dict:
compat_print(info_dict['thumbnail'])
if self.params.get('forcedescription', False) and 'description' in info_dict:
compat_print(info_dict['description'])
if self.params.get('forcefilename', False) and filename is not None:
compat_print(filename)
if self.params.get('forceformat', False):
compat_print(info_dict['format'])
# Do nothing else if in simulate mode
if self.params.get('simulate', False):
return
if filename is None:
return
try:
dn = os.path.dirname(encodeFilename(filename))
if dn != '' and not os.path.exists(dn):
os.makedirs(dn)
except (OSError, IOError) as err:
self.report_error(u'unable to create directory ' + compat_str(err))
return
if self.params.get('writedescription', False):
try:
descfn = filename + u'.description'
self.report_writedescription(descfn)
with io.open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
descfile.write(info_dict['description'])
except (OSError, IOError):
self.report_error(u'Cannot write description file ' + descfn)
return
if self.params.get('writesubtitles', False) and 'subtitles' in info_dict and info_dict['subtitles']:
# subtitles download errors are already managed as troubles in relevant IE
# that way it will silently go on when used with unsupporting IE
subtitle = info_dict['subtitles'][0]
(sub_error, sub_lang, sub) = subtitle
sub_format = self.params.get('subtitlesformat')
if sub_error:
self.report_warning("Some error while getting the subtitles")
else:
try:
sub_filename = filename.rsplit('.', 1)[0] + u'.' + sub_lang + u'.' + sub_format
self.report_writesubtitles(sub_filename)
with io.open(encodeFilename(sub_filename), 'w', encoding='utf-8') as subfile:
subfile.write(sub)
except (OSError, IOError):
self.report_error(u'Cannot write subtitles file ' + descfn)
return
if self.params.get('allsubtitles', False) and 'subtitles' in info_dict and info_dict['subtitles']:
subtitles = info_dict['subtitles']
sub_format = self.params.get('subtitlesformat')
for subtitle in subtitles:
(sub_error, sub_lang, sub) = subtitle
if sub_error:
self.report_warning("Some error while getting the subtitles")
else:
try:
sub_filename = filename.rsplit('.', 1)[0] + u'.' + sub_lang + u'.' + sub_format
self.report_writesubtitles(sub_filename)
with io.open(encodeFilename(sub_filename), 'w', encoding='utf-8') as subfile:
subfile.write(sub)
except (OSError, IOError):
self.report_error(u'Cannot write subtitles file ' + descfn)
return
if self.params.get('writeinfojson', False):
infofn = filename + u'.info.json'
self.report_writeinfojson(infofn)
try:
json_info_dict = dict((k, v) for k,v in info_dict.items() if not k in ['urlhandle'])
write_json_file(json_info_dict, encodeFilename(infofn))
except (OSError, IOError):
self.report_error(u'Cannot write metadata to JSON file ' + infofn)
return
if self.params.get('writethumbnail', False):
if 'thumbnail' in info_dict:
thumb_format = info_dict['thumbnail'].rpartition(u'/')[2].rpartition(u'.')[2]
if not thumb_format:
thumb_format = 'jpg'
thumb_filename = filename.rpartition('.')[0] + u'.' + thumb_format
self.to_screen(u'[%s] %s: Downloading thumbnail ...' %
(info_dict['extractor'], info_dict['id']))
uf = compat_urllib_request.urlopen(info_dict['thumbnail'])
with open(thumb_filename, 'wb') as thumbf:
shutil.copyfileobj(uf, thumbf)
self.to_screen(u'[%s] %s: Writing thumbnail to: %s' %
(info_dict['extractor'], info_dict['id'], thumb_filename))
if not self.params.get('skip_download', False):
if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(filename)):
success = True
else:
try:
success = self._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.report_error(u'unable to download video data: %s' % str(err))
return
except (ContentTooShortError, ) as err:
self.report_error(u'content too short (expected %s bytes and served %s)' % (err.expected, err.downloaded))
return
if success:
try:
self.post_process(filename, info_dict)
except (PostProcessingError) as err:
self.report_error(u'postprocessing: %s' % str(err))
return
def download(self, url_list):
"""Download a given list of URLs."""
if len(url_list) > 1 and self.fixed_template():
raise SameFileError(self.params['outtmpl'])
for url in url_list:
try:
#It also downloads the videos
videos = self.extract_info(url)
except UnavailableVideoError:
self.report_error(u'unable to download video')
except MaxDownloadsReached:
self.to_screen(u'[info] Maximum number of downloaded files reached.')
raise
return self._download_retcode
def post_process(self, filename, ie_info):
"""Run all the postprocessors on the given file."""
info = dict(ie_info)
info['filepath'] = filename
keep_video = None
for pp in self._pps:
try:
keep_video_wish,new_info = pp.run(info)
if keep_video_wish is not None:
if keep_video_wish:
keep_video = keep_video_wish
elif keep_video is None:
# No clear decision yet, let IE decide
keep_video = keep_video_wish
except PostProcessingError as e:
self.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.report_warning(u'Unable to remove downloaded video file')
def _download_with_rtmpdump(self, filename, url, player_url, page_url, play_path, tc_url):
self.report_destination(filename)
tmpfilename = self.temp_name(filename)
# Check for rtmpdump first
try:
subprocess.call(['rtmpdump', '-h'], stdout=(open(os.path.devnull, 'w')), stderr=subprocess.STDOUT)
except (OSError, IOError):
self.report_error(u'RTMP download detected but "rtmpdump" could not be run')
return False
verbosity_option = '--verbose' if self.params.get('verbose', False) else '--quiet'
# 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', verbosity_option, '-r', url, '-o', tmpfilename]
if player_url is not None:
basic_args += ['--swfVfy', player_url]
if page_url is not None:
basic_args += ['--pageUrl', page_url]
if play_path is not None:
basic_args += ['--playpath', play_path]
if tc_url is not None:
basic_args += ['--tcUrl', url]
args = basic_args + [[], ['--resume', '--skip', '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.to_stderr(u"\n")
self.report_error(u'rtmpdump exited with code %d' % retval)
return False
def _download_with_mplayer(self, filename, url):
self.report_destination(filename)
tmpfilename = self.temp_name(filename)
args = ['mplayer', '-really-quiet', '-vo', 'null', '-vc', 'dummy', '-dumpstream', '-dumpfile', tmpfilename, url]
# Check for mplayer first
try:
subprocess.call(['mplayer', '-h'], stdout=(open(os.path.devnull, 'w')), stderr=subprocess.STDOUT)
except (OSError, IOError):
self.report_error(u'MMS or RTSP download detected but "%s" could not be run' % args[0] )
return False
# Download using mplayer.
retval = subprocess.call(args)
if retval == 0:
fsize = os.path.getsize(encodeFilename(tmpfilename))
self.to_screen(u'\r[%s] %s bytes' % (args[0], fsize))
self.try_rename(tmpfilename, filename)
self._hook_progress({
'downloaded_bytes': fsize,
'total_bytes': fsize,
'filename': filename,
'status': 'finished',
})
return True
else:
self.to_stderr(u"\n")
self.report_error(u'mplayer 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),
info_dict.get('play_path', None),
info_dict.get('tc_url', None))
# Attempt to download using mplayer
if url.startswith('mms') or url.startswith('rtsp'):
return self._download_with_mplayer(filename, url)
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.report_error(u'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.report_error(u'unable to open for writing: %s' % str(err))
return False
try:
stream.write(data_block)
except (IOError, OSError) as err:
self.to_stderr(u"\n")
self.report_error(u'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.to_stderr(u"\n")
self.report_error(u'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)