9 from ..minicurses
import (
10 BreaklineStatusPrinter
,
13 QuietMultilinePrinter
,
18 LockingUnsupportedError
,
38 """File Downloader class.
40 File downloader objects are the ones responsible of downloading the
41 actual video file and writing it to disk.
43 File downloaders accept a lot of parameters. In order not to saturate
44 the object constructor with arguments, it receives a dictionary of
49 verbose: Print additional info to stdout.
50 quiet: Do not print messages to stdout.
51 ratelimit: Download speed limit, in bytes/sec.
52 throttledratelimit: Assume the download is being throttled below this speed (bytes/sec)
53 retries: Number of times to retry for expected network errors.
54 Default is 0 for API, but 10 for CLI
55 file_access_retries: Number of times to retry on file access error (default: 3)
56 buffersize: Size of download buffer in bytes.
57 noresizebuffer: Do not automatically resize the download buffer.
58 continuedl: Try to continue downloads if possible.
59 noprogress: Do not print the progress bar.
60 nopart: Do not use temporary .part files.
61 updatetime: Use the Last-modified header to set output file timestamps.
62 test: Download only first bytes to test the downloader.
63 min_filesize: Skip files smaller than this size
64 max_filesize: Skip files larger than this size
65 xattr_set_filesize: Set ytdl.filesize user xattribute with expected size.
66 external_downloader_args: A dictionary of downloader keys (in lower case)
67 and a list of additional command-line arguments for the
68 executable. Use 'default' as the name for arguments to be
69 passed to all downloaders. For compatibility with youtube-dl,
70 a single list of args can also be used
71 hls_use_mpegts: Use the mpegts container for HLS videos.
72 http_chunk_size: Size of a chunk for chunk-based HTTP downloading. May be
73 useful for bypassing bandwidth throttling imposed by
74 a webserver (experimental)
75 progress_template: See YoutubeDL.py
76 retry_sleep_functions: See YoutubeDL.py
78 Subclasses of this one must re-define the real_download method.
81 _TEST_FILE_SIZE
= 10241
84 def __init__(self
, ydl
, params
):
85 """Create a FileDownloader object with the given options."""
87 self
._progress
_hooks
= []
89 self
._prepare
_multiline
_status
()
90 self
.add_progress_hook(self
.report_progress
)
92 def _set_ydl(self
, ydl
):
96 'deprecation_warning',
99 'report_file_already_downloaded',
106 if not hasattr(self
, func
):
107 setattr(self
, func
, getattr(ydl
, func
))
109 def to_screen(self
, *args
, **kargs
):
110 self
.ydl
.to_screen(*args
, quiet
=self
.params
.get('quiet'), **kargs
)
112 __to_screen
= to_screen
116 return re
.sub(r
'(?<=[a-z])(?=[A-Z])', '_', cls
.__name
__[:-2]).lower()
119 def format_seconds(seconds
):
122 time
= timetuple_from_msec(seconds
* 1000)
125 return '%02d:%02d:%02d' % time
[:-1]
128 def format_eta(cls
, seconds
):
129 return f
'{remove_start(cls.format_seconds(seconds), "00:"):>8s}'
132 def calc_percent(byte_counter
, data_len
):
135 return float(byte_counter
) / float(data_len
) * 100.0
138 def format_percent(percent
):
139 return ' N/A%' if percent
is None else f
'{percent:>5.1f}%'
142 def calc_eta(cls
, start_or_rate
, now_or_remaining
, total
=NO_DEFAULT
, current
=NO_DEFAULT
):
143 if total
is NO_DEFAULT
:
144 rate
, remaining
= start_or_rate
, now_or_remaining
145 if None in (rate
, remaining
):
147 return int(float(remaining
) / rate
)
149 start
, now
= start_or_rate
, now_or_remaining
154 rate
= cls
.calc_speed(start
, now
, current
)
155 return rate
and int((float(total
) - float(current
)) / rate
)
158 def calc_speed(start
, now
, bytes):
160 if bytes == 0 or dif
< 0.001: # One millisecond
162 return float(bytes) / dif
165 def format_speed(speed
):
166 return ' Unknown B/s' if speed
is None else f
'{format_bytes(speed):>10s}/s'
169 def format_retries(retries
):
170 return 'inf' if retries
== float('inf') else int(retries
)
173 def filesize_or_none(unencoded_filename
):
174 if os
.path
.isfile(unencoded_filename
):
175 return os
.path
.getsize(unencoded_filename
)
179 def best_block_size(elapsed_time
, bytes):
180 new_min
= max(bytes / 2.0, 1.0)
181 new_max
= min(max(bytes * 2.0, 1.0), 4194304) # Do not surpass 4 MB
182 if elapsed_time
< 0.001:
184 rate
= bytes / elapsed_time
192 def parse_bytes(bytestr
):
193 """Parse a string indicating a byte quantity into an integer."""
194 deprecation_warning('yt_dlp.FileDownloader.parse_bytes is deprecated and '
195 'may be removed in the future. Use yt_dlp.utils.parse_bytes instead')
196 return parse_bytes(bytestr
)
198 def slow_down(self
, start_time
, now
, byte_counter
):
199 """Sleep if the download speed is over the rate limit."""
200 rate_limit
= self
.params
.get('ratelimit')
201 if rate_limit
is None or byte_counter
== 0:
205 elapsed
= now
- start_time
208 speed
= float(byte_counter
) / elapsed
209 if speed
> rate_limit
:
210 sleep_time
= float(byte_counter
) / rate_limit
- elapsed
212 time
.sleep(sleep_time
)
214 def temp_name(self
, filename
):
215 """Returns a temporary filename for the given filename."""
216 if self
.params
.get('nopart', False) or filename
== '-' or \
217 (os
.path
.exists(encodeFilename(filename
)) and not os
.path
.isfile(encodeFilename(filename
))):
219 return filename
+ '.part'
221 def undo_temp_name(self
, filename
):
222 if filename
.endswith('.part'):
223 return filename
[:-len('.part')]
226 def ytdl_filename(self
, filename
):
227 return filename
+ '.ytdl'
229 def wrap_file_access(action
, *, fatal
=False):
230 def error_callback(err
, count
, retries
, *, fd
):
231 return RetryManager
.report_retry(
232 err
, count
, retries
, info
=fd
.__to
_screen
,
233 warn
=lambda e
: (time
.sleep(0.01), fd
.to_screen(f
'[download] Unable to {action} file: {e}')),
234 error
=None if fatal
else lambda e
: fd
.report_error(f
'Unable to {action} file: {e}'),
235 sleep_func
=fd
.params
.get('retry_sleep_functions', {}).get('file_access'))
237 def wrapper(self
, func
, *args
, **kwargs
):
238 for retry
in RetryManager(self
.params
.get('file_access_retries', 3), error_callback
, fd
=self
):
240 return func(self
, *args
, **kwargs
)
241 except OSError as err
:
242 if err
.errno
in (errno
.EACCES
, errno
.EINVAL
):
245 retry
.error_callback(err
, 1, 0)
247 return functools
.partial(functools
.partialmethod
, wrapper
)
249 @wrap_file_access('open', fatal
=True)
250 def sanitize_open(self
, filename
, open_mode
):
251 f
, filename
= sanitize_open(filename
, open_mode
)
252 if not getattr(f
, 'locked', None):
253 self
.write_debug(f
'{LockingUnsupportedError.msg}. Proceeding without locking', only_once
=True)
256 @wrap_file_access('remove')
257 def try_remove(self
, filename
):
258 if os
.path
.isfile(filename
):
261 @wrap_file_access('rename')
262 def try_rename(self
, old_filename
, new_filename
):
263 if old_filename
== new_filename
:
265 os
.replace(old_filename
, new_filename
)
267 def try_utime(self
, filename
, last_modified_hdr
):
268 """Try to set the last-modified time of the given file."""
269 if last_modified_hdr
is None:
271 if not os
.path
.isfile(encodeFilename(filename
)):
273 timestr
= last_modified_hdr
276 filetime
= timeconvert(timestr
)
279 # Ignore obviously invalid dates
282 with contextlib
.suppress(Exception):
283 os
.utime(filename
, (time
.time(), filetime
))
286 def report_destination(self
, filename
):
287 """Report destination filename."""
288 self
.to_screen('[download] Destination: ' + filename
)
290 def _prepare_multiline_status(self
, lines
=1):
291 if self
.params
.get('noprogress'):
292 self
._multiline
= QuietMultilinePrinter()
293 elif self
.ydl
.params
.get('logger'):
294 self
._multiline
= MultilineLogger(self
.ydl
.params
['logger'], lines
)
295 elif self
.params
.get('progress_with_newline'):
296 self
._multiline
= BreaklineStatusPrinter(self
.ydl
._out
_files
.out
, lines
)
298 self
._multiline
= MultilinePrinter(self
.ydl
._out
_files
.out
, lines
, not self
.params
.get('quiet'))
299 self
._multiline
.allow_colors
= self
.ydl
._allow
_colors
.out
and self
.ydl
._allow
_colors
.out
!= 'no_color'
300 self
._multiline
._HAVE
_FULLCAP
= self
.ydl
._allow
_colors
.out
302 def _finish_multiline_status(self
):
303 self
._multiline
.end()
305 ProgressStyles
= Namespace(
306 downloaded_bytes
='light blue',
307 percent
='light blue',
310 elapsed
='bold white',
312 total_bytes_estimate
='',
315 def _report_progress_status(self
, s
, default_template
):
316 for name
, style
in self
.ProgressStyles
.items_
:
317 name
= f
'_{name}_str'
320 s
[name
] = self
._format
_progress
(s
[name
], style
)
321 s
['_default_template'] = default_template
% s
323 progress_dict
= s
.copy()
324 progress_dict
.pop('info_dict')
325 progress_dict
= {'info': s['info_dict'], 'progress': progress_dict}
327 progress_template
= self
.params
.get('progress_template', {})
328 self
._multiline
.print_at_line(self
.ydl
.evaluate_outtmpl(
329 progress_template
.get('download') or '[download] %(progress._default_template)s',
330 progress_dict
), s
.get('progress_idx') or 0)
331 self
.to_console_title(self
.ydl
.evaluate_outtmpl(
332 progress_template
.get('download-title') or 'yt-dlp %(progress._default_template)s',
335 def _format_progress(self
, *args
, **kwargs
):
336 return self
.ydl
._format
_text
(
337 self
._multiline
.stream
, self
._multiline
.allow_colors
, *args
, **kwargs
)
339 def report_progress(self
, s
):
340 def with_fields(*tups
, default
=''):
341 for *fields
, tmpl
in tups
:
342 if all(s
.get(f
) is not None for f
in fields
):
346 _format_bytes
= lambda k
: f
'{format_bytes(s.get(k)):>10s}'
348 if s
['status'] == 'finished':
349 if self
.params
.get('noprogress'):
350 self
.to_screen('[download] Download completed')
351 speed
= try_call(lambda: s
['total_bytes'] / s
['elapsed'])
354 '_speed_str': self
.format_speed(speed
).strip(),
355 '_total_bytes_str': _format_bytes('total_bytes'),
356 '_elapsed_str': self
.format_seconds(s
.get('elapsed')),
357 '_percent_str': self
.format_percent(100),
359 self
._report
_progress
_status
(s
, join_nonempty(
361 with_fields(('total_bytes', 'of %(_total_bytes_str)s')),
362 with_fields(('elapsed', 'in %(_elapsed_str)s')),
363 with_fields(('speed', 'at %(_speed_str)s')),
366 if s
['status'] != 'downloading':
370 '_eta_str': self
.format_eta(s
.get('eta')).strip(),
371 '_speed_str': self
.format_speed(s
.get('speed')),
372 '_percent_str': self
.format_percent(try_call(
373 lambda: 100 * s
['downloaded_bytes'] / s
['total_bytes'],
374 lambda: 100 * s
['downloaded_bytes'] / s
['total_bytes_estimate'],
375 lambda: s
['downloaded_bytes'] == 0 and 0)),
376 '_total_bytes_str': _format_bytes('total_bytes'),
377 '_total_bytes_estimate_str': _format_bytes('total_bytes_estimate'),
378 '_downloaded_bytes_str': _format_bytes('downloaded_bytes'),
379 '_elapsed_str': self
.format_seconds(s
.get('elapsed')),
382 msg_template
= with_fields(
383 ('total_bytes', '%(_percent_str)s of %(_total_bytes_str)s at %(_speed_str)s ETA %(_eta_str)s'),
384 ('total_bytes_estimate', '%(_percent_str)s of ~%(_total_bytes_estimate_str)s at %(_speed_str)s ETA %(_eta_str)s'),
385 ('downloaded_bytes', 'elapsed', '%(_downloaded_bytes_str)s at %(_speed_str)s (%(_elapsed_str)s)'),
386 ('downloaded_bytes', '%(_downloaded_bytes_str)s at %(_speed_str)s'),
387 default
='%(_percent_str)s at %(_speed_str)s ETA %(_eta_str)s')
389 msg_template
+= with_fields(
390 ('fragment_index', 'fragment_count', ' (frag %(fragment_index)s/%(fragment_count)s)'),
391 ('fragment_index', ' (frag %(fragment_index)s)'))
392 self
._report
_progress
_status
(s
, msg_template
)
394 def report_resuming_byte(self
, resume_len
):
395 """Report attempt to resume at given byte."""
396 self
.to_screen('[download] Resuming download at byte %s' % resume_len
)
398 def report_retry(self
, err
, count
, retries
, frag_index
=NO_DEFAULT
, fatal
=True):
400 is_frag
= False if frag_index
is NO_DEFAULT
else 'fragment'
401 RetryManager
.report_retry(
402 err
, count
, retries
, info
=self
.__to
_screen
,
403 warn
=lambda msg
: self
.__to
_screen
(f
'[download] Got error: {msg}'),
404 error
=IDENTITY
if not fatal
else lambda e
: self
.report_error(f
'\r[download] Got error: {e}'),
405 sleep_func
=self
.params
.get('retry_sleep_functions', {}).get(is_frag
or 'http'),
406 suffix
=f
'fragment{"s" if frag_index is None else f" {frag_index}"}' if is_frag
else None)
408 def report_unable_to_resume(self
):
409 """Report it was impossible to resume download."""
410 self
.to_screen('[download] Unable to resume')
413 def supports_manifest(manifest
):
414 """ Whether the downloader can download the fragments from the manifest.
415 Redefine in subclasses if needed. """
418 def download(self
, filename
, info_dict
, subtitle
=False):
419 """Download to a filename using the info from info_dict
420 Return True on success and False otherwise
422 nooverwrites_and_exists
= (
423 not self
.params
.get('overwrites', True)
424 and os
.path
.exists(encodeFilename(filename
))
427 if not hasattr(filename
, 'write'):
428 continuedl_and_exists
= (
429 self
.params
.get('continuedl', True)
430 and os
.path
.isfile(encodeFilename(filename
))
431 and not self
.params
.get('nopart', False)
434 # Check file already present
435 if filename
!= '-' and (nooverwrites_and_exists
or continuedl_and_exists
):
436 self
.report_file_already_downloaded(filename
)
437 self
._hook
_progress
({
438 'filename': filename
,
439 'status': 'finished',
440 'total_bytes': os
.path
.getsize(encodeFilename(filename
)),
442 self
._finish
_multiline
_status
()
446 sleep_interval
= self
.params
.get('sleep_interval_subtitles') or 0
448 min_sleep_interval
= self
.params
.get('sleep_interval') or 0
449 sleep_interval
= random
.uniform(
450 min_sleep_interval
, self
.params
.get('max_sleep_interval') or min_sleep_interval
)
451 if sleep_interval
> 0:
452 self
.to_screen(f
'[download] Sleeping {sleep_interval:.2f} seconds ...')
453 time
.sleep(sleep_interval
)
455 ret
= self
.real_download(filename
, info_dict
)
456 self
._finish
_multiline
_status
()
459 def real_download(self
, filename
, info_dict
):
460 """Real download process. Redefine in subclasses."""
461 raise NotImplementedError('This method must be implemented by subclasses')
463 def _hook_progress(self
, status
, info_dict
):
464 # Ideally we want to make a copy of the dict, but that is too slow
465 status
['info_dict'] = info_dict
466 # youtube-dl passes the same status object to all the hooks.
467 # Some third party scripts seems to be relying on this.
468 # So keep this behavior if possible
469 for ph
in self
._progress
_hooks
:
472 def add_progress_hook(self
, ph
):
473 # See YoutubeDl.py (search for progress_hooks) for a description of
475 self
._progress
_hooks
.append(ph
)
477 def _debug_cmd(self
, args
, exe
=None):
478 if not self
.params
.get('verbose', False):
481 str_args
= [decodeArgument(a
) for a
in args
]
484 exe
= os
.path
.basename(str_args
[0])
486 self
.write_debug(f
'{exe} command line: {shell_quote(str_args)}')