mirror of
https://github.com/ytdl-org/youtube-dl
synced 2024-12-16 23:07:48 +01:00
322 lines
12 KiB
Python
322 lines
12 KiB
Python
import os
|
|
import re
|
|
import sys
|
|
import time
|
|
|
|
from ..utils import (
|
|
compat_str,
|
|
encodeFilename,
|
|
format_bytes,
|
|
timeconvert,
|
|
)
|
|
|
|
|
|
class FileDownloader(object):
|
|
"""File Downloader class.
|
|
|
|
File downloader objects are the ones responsible of downloading the
|
|
actual video file and writing it to disk.
|
|
|
|
File downloaders accept a lot of parameters. In order not to saturate
|
|
the object constructor with arguments, it receives a dictionary of
|
|
options instead.
|
|
|
|
Available options:
|
|
|
|
verbose: Print additional info to stdout.
|
|
quiet: Do not print messages to stdout.
|
|
ratelimit: Download speed limit, in bytes/sec.
|
|
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.
|
|
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.
|
|
test: Download only first bytes to test the downloader.
|
|
min_filesize: Skip files smaller than this size
|
|
max_filesize: Skip files larger than this size
|
|
|
|
Subclasses of this one must re-define the real_download method.
|
|
"""
|
|
|
|
params = None
|
|
|
|
def __init__(self, ydl, params):
|
|
"""Create a FileDownloader object with the given options."""
|
|
self.ydl = ydl
|
|
self._progress_hooks = []
|
|
self.params = params
|
|
|
|
@staticmethod
|
|
def format_seconds(seconds):
|
|
(mins, secs) = divmod(seconds, 60)
|
|
(hours, mins) = divmod(mins, 60)
|
|
if hours > 99:
|
|
return '--:--:--'
|
|
if hours == 0:
|
|
return '%02d:%02d' % (mins, secs)
|
|
else:
|
|
return '%02d:%02d:%02d' % (hours, mins, secs)
|
|
|
|
@staticmethod
|
|
def calc_percent(byte_counter, data_len):
|
|
if data_len is None:
|
|
return None
|
|
return float(byte_counter) / float(data_len) * 100.0
|
|
|
|
@staticmethod
|
|
def format_percent(percent):
|
|
if percent is None:
|
|
return '---.-%'
|
|
return '%6s' % ('%3.1f%%' % percent)
|
|
|
|
@staticmethod
|
|
def calc_eta(start, now, total, current):
|
|
if total is None:
|
|
return None
|
|
dif = now - start
|
|
if current == 0 or dif < 0.001: # One millisecond
|
|
return None
|
|
rate = float(current) / dif
|
|
return int((float(total) - float(current)) / rate)
|
|
|
|
@staticmethod
|
|
def format_eta(eta):
|
|
if eta is None:
|
|
return '--:--'
|
|
return FileDownloader.format_seconds(eta)
|
|
|
|
@staticmethod
|
|
def calc_speed(start, now, bytes):
|
|
dif = now - start
|
|
if bytes == 0 or dif < 0.001: # One millisecond
|
|
return None
|
|
return float(bytes) / dif
|
|
|
|
@staticmethod
|
|
def format_speed(speed):
|
|
if speed is None:
|
|
return '%10s' % '---b/s'
|
|
return '%10s' % ('%s/s' % format_bytes(speed))
|
|
|
|
@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 to_screen(self, *args, **kargs):
|
|
self.ydl.to_screen(*args, **kargs)
|
|
|
|
def to_stderr(self, message):
|
|
self.ydl.to_screen(message)
|
|
|
|
def to_console_title(self, message):
|
|
self.ydl.to_console_title(message)
|
|
|
|
def trouble(self, *args, **kargs):
|
|
self.ydl.trouble(*args, **kargs)
|
|
|
|
def report_warning(self, *args, **kargs):
|
|
self.ydl.report_warning(*args, **kargs)
|
|
|
|
def report_error(self, *args, **kargs):
|
|
self.ydl.report_error(*args, **kargs)
|
|
|
|
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: %s' % compat_str(err))
|
|
|
|
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_destination(self, filename):
|
|
"""Report destination filename."""
|
|
self.to_screen(u'[download] Destination: ' + filename)
|
|
|
|
def _report_progress_status(self, msg, is_last_line=False):
|
|
fullmsg = u'[download] ' + msg
|
|
if self.params.get('progress_with_newline', False):
|
|
self.to_screen(fullmsg)
|
|
else:
|
|
if os.name == 'nt':
|
|
prev_len = getattr(self, '_report_progress_prev_line_length',
|
|
0)
|
|
if prev_len > len(fullmsg):
|
|
fullmsg += u' ' * (prev_len - len(fullmsg))
|
|
self._report_progress_prev_line_length = len(fullmsg)
|
|
clear_line = u'\r'
|
|
else:
|
|
clear_line = (u'\r\x1b[K' if sys.stderr.isatty() else u'\r')
|
|
self.to_screen(clear_line + fullmsg, skip_eol=not is_last_line)
|
|
self.to_console_title(u'youtube-dl ' + msg)
|
|
|
|
def report_progress(self, percent, data_len_str, speed, eta):
|
|
"""Report download progress."""
|
|
if self.params.get('noprogress', False):
|
|
return
|
|
if eta is not None:
|
|
eta_str = self.format_eta(eta)
|
|
else:
|
|
eta_str = 'Unknown ETA'
|
|
if percent is not None:
|
|
percent_str = self.format_percent(percent)
|
|
else:
|
|
percent_str = 'Unknown %'
|
|
speed_str = self.format_speed(speed)
|
|
|
|
msg = (u'%s of %s at %s ETA %s' %
|
|
(percent_str, data_len_str, speed_str, eta_str))
|
|
self._report_progress_status(msg)
|
|
|
|
def report_progress_live_stream(self, downloaded_data_len, speed, elapsed):
|
|
if self.params.get('noprogress', False):
|
|
return
|
|
downloaded_str = format_bytes(downloaded_data_len)
|
|
speed_str = self.format_speed(speed)
|
|
elapsed_str = FileDownloader.format_seconds(elapsed)
|
|
msg = u'%s at %s (%s)' % (downloaded_str, speed_str, elapsed_str)
|
|
self._report_progress_status(msg)
|
|
|
|
def report_finish(self, data_len_str, tot_time):
|
|
"""Report download finished."""
|
|
if self.params.get('noprogress', False):
|
|
self.to_screen(u'[download] Download completed')
|
|
else:
|
|
self._report_progress_status(
|
|
(u'100%% of %s in %s' %
|
|
(data_len_str, self.format_seconds(tot_time))),
|
|
is_last_line=True)
|
|
|
|
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:
|
|
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 download(self, filename, info_dict):
|
|
"""Download to a filename using the info from info_dict
|
|
Return True on success and False otherwise
|
|
"""
|
|
sleep_interval = self.params.get('sleepinterval', 0)
|
|
if sleep_interval > 0:
|
|
self.to_screen(u'[download] Sleeping %d seconds...' %sleep_interval)
|
|
time.sleep(sleep_interval)
|
|
# 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',
|
|
'total_bytes': os.path.getsize(encodeFilename(filename)),
|
|
})
|
|
return True
|
|
|
|
return self.real_download(filename, info_dict)
|
|
|
|
def real_download(self, filename, info_dict):
|
|
"""Real download process. Redefine in subclasses."""
|
|
raise NotImplementedError(u'This method must be implemented by subclasses')
|
|
|
|
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
|
|
* eta: The estimated time in seconds, None if unknown
|
|
* speed: The download speed in bytes/second, None if unknown
|
|
|
|
Hooks are guaranteed to be called at least once (with status "finished")
|
|
if the download is successful.
|
|
"""
|
|
self._progress_hooks.append(ph)
|