2 # -*- coding: utf-8 -*-
4 from __future__ import absolute_import
22 class FileDownloader(object):
23 """File Downloader class.
25 File downloader objects are the ones responsible of downloading the
26 actual video file and writing it to disk if the user has requested
27 it, among some other tasks. In most cases there should be one per
28 program. As, given a video URL, the downloader doesn't know how to
29 extract all the needed information, task that InfoExtractors do, it
30 has to pass the URL to one of them.
32 For this, file downloader objects have a method that allows
33 InfoExtractors to be registered in a given order. When it is passed
34 a URL, the file downloader handles it to the first InfoExtractor it
35 finds that reports being able to handle it. The InfoExtractor extracts
36 all the information about the video or videos the URL refers to, and
37 asks the FileDownloader to process the video information, possibly
38 downloading the video.
40 File downloaders accept a lot of parameters. In order not to saturate
41 the object constructor with arguments, it receives a dictionary of
42 options instead. These options are available through the params
43 attribute for the InfoExtractors to use. The FileDownloader also
44 registers itself as the downloader in charge for the InfoExtractors
45 that are added to it, so this is a "mutual registration".
49 username: Username for authentication purposes.
50 password: Password for authentication purposes.
51 usenetrc: Use netrc for authentication instead.
52 quiet: Do not print messages to stdout.
53 forceurl: Force printing final URL.
54 forcetitle: Force printing title.
55 forcethumbnail: Force printing thumbnail URL.
56 forcedescription: Force printing description.
57 forcefilename: Force printing final filename.
58 simulate: Do not download the video files.
59 format: Video format code.
60 format_limit: Highest quality format to try.
61 outtmpl: Template for output names.
62 restrictfilenames: Do not allow "&" and spaces in file names
63 ignoreerrors: Do not stop on download errors.
64 ratelimit: Download speed limit, in bytes/sec.
65 nooverwrites: Prevent overwriting files.
66 retries: Number of times to retry for HTTP error 5xx
67 buffersize: Size of download buffer in bytes.
68 noresizebuffer: Do not automatically resize the download buffer.
69 continuedl: Try to continue downloads if possible.
70 noprogress: Do not print the progress bar.
71 playliststart: Playlist item to start at.
72 playlistend: Playlist item to end at.
73 matchtitle: Download only matching titles.
74 rejecttitle: Reject downloads for matching titles.
75 logtostderr: Log messages to stderr instead of stdout.
76 consoletitle: Display progress in console window's titlebar.
77 nopart: Do not use temporary .part files.
78 updatetime: Use the Last-modified header to set output file timestamps.
79 writedescription: Write the video description to a .description file
80 writeinfojson: Write the video description to a .info.json file
81 writesubtitles: Write the video subtitles to a file
82 onlysubtitles: Downloads only the subtitles of the video
83 allsubtitles: Downloads all the subtitles of the video
84 listsubtitles: Lists all available subtitles for the video
85 subtitlesformat: Subtitle format [sbv/srt] (default=srt)
86 subtitleslang: Language of the subtitles to download
87 test: Download only first bytes to test the downloader.
88 keepvideo: Keep the video file after post-processing
89 min_filesize: Skip files smaller than this size
90 max_filesize: Skip files larger than this size
96 _download_retcode = None
100 def __init__(self, params):
101 """Create a FileDownloader object with the given options."""
104 self._progress_hooks = []
105 self._download_retcode = 0
106 self._num_downloads = 0
107 self._screen_file = [sys.stdout, sys.stderr][params.get('logtostderr', False)]
110 if '%(stitle)s' in self.params['outtmpl']:
111 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.')
114 def format_bytes(bytes):
117 if type(bytes) is str:
122 exponent = int(math.log(bytes, 1024.0))
123 suffix = 'bkMGTPEZY'[exponent]
124 converted = float(bytes) / float(1024 ** exponent)
125 return '%.2f%s' % (converted, suffix)
128 def calc_percent(byte_counter, data_len):
131 return '%6s' % ('%3.1f%%' % (float(byte_counter) / float(data_len) * 100.0))
134 def calc_eta(start, now, total, current):
138 if current == 0 or dif < 0.001: # One millisecond
140 rate = float(current) / dif
141 eta = int((float(total) - float(current)) / rate)
142 (eta_mins, eta_secs) = divmod(eta, 60)
145 return '%02d:%02d' % (eta_mins, eta_secs)
148 def calc_speed(start, now, bytes):
150 if bytes == 0 or dif < 0.001: # One millisecond
151 return '%10s' % '---b/s'
152 return '%10s' % ('%s/s' % FileDownloader.format_bytes(float(bytes) / dif))
155 def best_block_size(elapsed_time, bytes):
156 new_min = max(bytes / 2.0, 1.0)
157 new_max = min(max(bytes * 2.0, 1.0), 4194304) # Do not surpass 4 MB
158 if elapsed_time < 0.001:
160 rate = bytes / elapsed_time
168 def parse_bytes(bytestr):
169 """Parse a string indicating a byte quantity into an integer."""
170 matchobj = re.match(r'(?i)^(\d+(?:\.\d+)?)([kMGTPEZY]?)$', bytestr)
173 number = float(matchobj.group(1))
174 multiplier = 1024.0 ** 'bkmgtpezy'.index(matchobj.group(2).lower())
175 return int(round(number * multiplier))
177 def add_info_extractor(self, ie):
178 """Add an InfoExtractor object to the end of the list."""
180 ie.set_downloader(self)
182 def add_post_processor(self, pp):
183 """Add a PostProcessor object to the end of the chain."""
185 pp.set_downloader(self)
187 def to_screen(self, message, skip_eol=False):
188 """Print message to stdout if not in quiet mode."""
189 assert type(message) == type(u'')
190 if not self.params.get('quiet', False):
191 terminator = [u'\n', u''][skip_eol]
192 output = message + terminator
193 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
194 output = output.encode(preferredencoding(), 'ignore')
195 self._screen_file.write(output)
196 self._screen_file.flush()
198 def to_stderr(self, message):
199 """Print message to stderr."""
200 assert type(message) == type(u'')
201 output = message + u'\n'
202 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
203 output = output.encode(preferredencoding())
204 sys.stderr.write(output)
206 def to_cons_title(self, message):
207 """Set console/terminal window title to message."""
208 if not self.params.get('consoletitle', False):
210 if os.name == 'nt' and ctypes.windll.kernel32.GetConsoleWindow():
211 # c_wchar_p() might not be necessary if `message` is
212 # already of type unicode()
213 ctypes.windll.kernel32.SetConsoleTitleW(ctypes.c_wchar_p(message))
214 elif 'TERM' in os.environ:
215 self.to_screen('\033]0;%s\007' % message, skip_eol=True)
217 def fixed_template(self):
218 """Checks if the output template is fixed."""
219 return (re.search(u'(?u)%\\(.+?\\)s', self.params['outtmpl']) is None)
221 def trouble(self, message=None, tb=None):
222 """Determine action to take when a download problem appears.
224 Depending on if the downloader has been configured to ignore
225 download errors or not, this method may throw an exception or
226 not when errors are found, after printing the message.
228 tb, if given, is additional traceback information.
230 if message is not None:
231 self.to_stderr(message)
232 if self.params.get('verbose'):
234 if sys.exc_info()[0]: # if .trouble has been called from an except block
236 if hasattr(sys.exc_info()[1], 'exc_info') and sys.exc_info()[1].exc_info[0]:
237 tb += u''.join(traceback.format_exception(*sys.exc_info()[1].exc_info))
238 tb += compat_str(traceback.format_exc())
240 tb_data = traceback.format_list(traceback.extract_stack())
241 tb = u''.join(tb_data)
243 if not self.params.get('ignoreerrors', False):
244 if sys.exc_info()[0] and hasattr(sys.exc_info()[1], 'exc_info') and sys.exc_info()[1].exc_info[0]:
245 exc_info = sys.exc_info()[1].exc_info
247 exc_info = sys.exc_info()
248 raise DownloadError(message, exc_info)
249 self._download_retcode = 1
251 def report_warning(self, message):
253 Print the message to stderr, it will be prefixed with 'WARNING:'
254 If stderr is a tty file the 'WARNING:' will be colored
256 if sys.stderr.isatty():
257 _msg_header=u'\033[0;33mWARNING:\033[0m'
259 _msg_header=u'WARNING:'
260 warning_message=u'%s %s' % (_msg_header,message)
261 self.to_stderr(warning_message)
263 def report_error(self, message, tb=None):
265 Do the same as trouble, but prefixes the message with 'ERROR:', colored
266 in red if stderr is a tty file.
268 if sys.stderr.isatty():
269 _msg_header = u'\033[0;31mERROR:\033[0m'
271 _msg_header = u'ERROR:'
272 error_message = u'%s %s' % (_msg_header, message)
273 self.trouble(error_message, tb)
275 def slow_down(self, start_time, byte_counter):
276 """Sleep if the download speed is over the rate limit."""
277 rate_limit = self.params.get('ratelimit', None)
278 if rate_limit is None or byte_counter == 0:
281 elapsed = now - start_time
284 speed = float(byte_counter) / elapsed
285 if speed > rate_limit:
286 time.sleep((byte_counter - rate_limit * (now - start_time)) / rate_limit)
288 def temp_name(self, filename):
289 """Returns a temporary filename for the given filename."""
290 if self.params.get('nopart', False) or filename == u'-' or \
291 (os.path.exists(encodeFilename(filename)) and not os.path.isfile(encodeFilename(filename))):
293 return filename + u'.part'
295 def undo_temp_name(self, filename):
296 if filename.endswith(u'.part'):
297 return filename[:-len(u'.part')]
300 def try_rename(self, old_filename, new_filename):
302 if old_filename == new_filename:
304 os.rename(encodeFilename(old_filename), encodeFilename(new_filename))
305 except (IOError, OSError) as err:
306 self.report_error(u'unable to rename file')
308 def try_utime(self, filename, last_modified_hdr):
309 """Try to set the last-modified time of the given file."""
310 if last_modified_hdr is None:
312 if not os.path.isfile(encodeFilename(filename)):
314 timestr = last_modified_hdr
317 filetime = timeconvert(timestr)
321 os.utime(filename, (time.time(), filetime))
326 def report_writedescription(self, descfn):
327 """ Report that the description file is being written """
328 self.to_screen(u'[info] Writing video description to: ' + descfn)
330 def report_writesubtitles(self, sub_filename):
331 """ Report that the subtitles file is being written """
332 self.to_screen(u'[info] Writing video subtitles to: ' + sub_filename)
334 def report_writeinfojson(self, infofn):
335 """ Report that the metadata file has been written """
336 self.to_screen(u'[info] Video description metadata as JSON to: ' + infofn)
338 def report_destination(self, filename):
339 """Report destination filename."""
340 self.to_screen(u'[download] Destination: ' + filename)
342 def report_progress(self, percent_str, data_len_str, speed_str, eta_str):
343 """Report download progress."""
344 if self.params.get('noprogress', False):
346 if self.params.get('progress_with_newline', False):
347 self.to_screen(u'[download] %s of %s at %s ETA %s' %
348 (percent_str, data_len_str, speed_str, eta_str))
350 self.to_screen(u'\r[download] %s of %s at %s ETA %s' %
351 (percent_str, data_len_str, speed_str, eta_str), skip_eol=True)
352 self.to_cons_title(u'youtube-dl - %s of %s at %s ETA %s' %
353 (percent_str.strip(), data_len_str.strip(), speed_str.strip(), eta_str.strip()))
355 def report_resuming_byte(self, resume_len):
356 """Report attempt to resume at given byte."""
357 self.to_screen(u'[download] Resuming download at byte %s' % resume_len)
359 def report_retry(self, count, retries):
360 """Report retry in case of HTTP error 5xx"""
361 self.to_screen(u'[download] Got server HTTP error. Retrying (attempt %d of %d)...' % (count, retries))
363 def report_file_already_downloaded(self, file_name):
364 """Report file has already been fully downloaded."""
366 self.to_screen(u'[download] %s has already been downloaded' % file_name)
367 except (UnicodeEncodeError) as err:
368 self.to_screen(u'[download] The file has already been downloaded')
370 def report_unable_to_resume(self):
371 """Report it was impossible to resume download."""
372 self.to_screen(u'[download] Unable to resume')
374 def report_finish(self):
375 """Report download finished."""
376 if self.params.get('noprogress', False):
377 self.to_screen(u'[download] Download completed')
381 def increment_downloads(self):
382 """Increment the ordinal that assigns a number to each file."""
383 self._num_downloads += 1
385 def prepare_filename(self, info_dict):
386 """Generate the output filename."""
388 template_dict = dict(info_dict)
390 template_dict['epoch'] = int(time.time())
391 template_dict['autonumber'] = u'%05d' % self._num_downloads
393 sanitize = lambda k,v: sanitize_filename(
394 u'NA' if v is None else compat_str(v),
395 restricted=self.params.get('restrictfilenames'),
397 template_dict = dict((k, sanitize(k, v)) for k,v in template_dict.items())
399 filename = self.params['outtmpl'] % template_dict
401 except KeyError as err:
402 self.trouble(u'ERROR: Erroneous output template')
404 except ValueError as err:
405 self.trouble(u'ERROR: Insufficient system charset ' + repr(preferredencoding()))
408 def _match_entry(self, info_dict):
409 """ Returns None iff the file should be downloaded """
411 title = info_dict['title']
412 matchtitle = self.params.get('matchtitle', False)
414 if not re.search(matchtitle, title, re.IGNORECASE):
415 return u'[download] "' + title + '" title did not match pattern "' + matchtitle + '"'
416 rejecttitle = self.params.get('rejecttitle', False)
418 if re.search(rejecttitle, title, re.IGNORECASE):
419 return u'"' + title + '" title matched reject pattern "' + rejecttitle + '"'
422 def extract_info(self, url):
424 Returns a list with a dictionary for each video we find.
426 suitable_found = False
428 # Go to next InfoExtractor if not suitable
429 if not ie.suitable(url):
432 # Warn if the _WORKING attribute is False
434 self.to_stderr(u'WARNING: the program functionality for this site has been marked as broken, '
435 u'and will probably not work. If you want to go on, use the -i option.')
437 # Suitable InfoExtractor found
438 suitable_found = True
440 # Extract information from URL and process it
442 ie_results = ie.extract(url)
443 results = self.process_ie_results(ie_results, ie)
445 except ExtractorError as de: # An error we somewhat expected
446 self.trouble(u'ERROR: ' + compat_str(de), de.format_traceback())
448 except Exception as e:
449 if self.params.get('ignoreerrors', False):
450 self.trouble(u'ERROR: ' + compat_str(e), tb=compat_str(traceback.format_exc()))
454 if not suitable_found:
455 self.trouble(u'ERROR: no suitable InfoExtractor: %s' % url)
456 def extract_info_iterable(self, urls):
458 Return the videos founded for the urls
462 results.extend(self.extract_info(url))
465 def process_ie_results(self, ie_results, ie):
467 Take the results of the ie and return a list of videos.
468 For url elements it will seartch the suitable ie and get the videos
469 For playlist elements it will process each of the elements of the 'entries' key
472 for result in ie_results or []:
473 result_type = result.get('_type', 'video') #If not given we suppose it's a video, support the dafault old system
474 if result_type == 'video':
475 if not 'extractor' in result:
476 #The extractor has already been set somewhere else
477 result['extractor'] = ie.IE_NAME
478 results.append(result)
479 elif result_type == 'url':
480 #We get the videos pointed by the url
481 results.extend(self.extract_info(result['url']))
482 elif result_type == 'playlist':
483 #We process each entry in the playlist
484 entries_result = self.process_ie_results(result['entries'], ie)
485 result['entries'] = entries_result
486 results.extend([result])
489 def process_info(self, info_dict):
490 """Process a single dictionary returned by an InfoExtractor."""
492 if info_dict.get('_type','video') == 'playlist':
493 playlist = info_dict.get('title', None) or info_dict.get('id', None)
494 self.to_screen(u'[download] Downloading playlist: %s' % playlist)
495 n_videos = len(info_dict['entries'])
496 for i,video in enumerate(info_dict['entries'],1):
497 video['playlist'] = playlist
498 self.to_screen(u'[download] Downloading video #%s of %s' %(i, n_videos))
499 self.process_info(video)
502 # Keep for backwards compatibility
503 info_dict['stitle'] = info_dict['title']
505 if not 'format' in info_dict:
506 info_dict['format'] = info_dict['ext']
508 reason = self._match_entry(info_dict)
509 if reason is not None:
510 self.to_screen(u'[download] ' + reason)
513 max_downloads = self.params.get('max_downloads')
514 if max_downloads is not None:
515 if self._num_downloads > int(max_downloads):
516 raise MaxDownloadsReached()
518 filename = self.prepare_filename(info_dict)
521 if self.params.get('forcetitle', False):
522 compat_print(info_dict['title'])
523 if self.params.get('forceurl', False):
524 compat_print(info_dict['url'])
525 if self.params.get('forcethumbnail', False) and 'thumbnail' in info_dict:
526 compat_print(info_dict['thumbnail'])
527 if self.params.get('forcedescription', False) and 'description' in info_dict:
528 compat_print(info_dict['description'])
529 if self.params.get('forcefilename', False) and filename is not None:
530 compat_print(filename)
531 if self.params.get('forceformat', False):
532 compat_print(info_dict['format'])
534 # Do nothing else if in simulate mode
535 if self.params.get('simulate', False):
542 dn = os.path.dirname(encodeFilename(filename))
543 if dn != '' and not os.path.exists(dn): # dn is already encoded
545 except (OSError, IOError) as err:
546 self.report_error(u'unable to create directory ' + compat_str(err))
549 if self.params.get('writedescription', False):
551 descfn = filename + u'.description'
552 self.report_writedescription(descfn)
553 with io.open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
554 descfile.write(info_dict['description'])
555 except (OSError, IOError):
556 self.report_error(u'Cannot write description file ' + descfn)
559 if self.params.get('writesubtitles', False) and 'subtitles' in info_dict and info_dict['subtitles']:
560 # subtitles download errors are already managed as troubles in relevant IE
561 # that way it will silently go on when used with unsupporting IE
562 subtitle = info_dict['subtitles'][0]
563 (sub_error, sub_lang, sub) = subtitle
564 sub_format = self.params.get('subtitlesformat')
566 self.report_warning("Some error while getting the subtitles")
569 sub_filename = filename.rsplit('.', 1)[0] + u'.' + sub_lang + u'.' + sub_format
570 self.report_writesubtitles(sub_filename)
571 with io.open(encodeFilename(sub_filename), 'w', encoding='utf-8') as subfile:
573 except (OSError, IOError):
574 self.report_error(u'Cannot write subtitles file ' + descfn)
576 if self.params.get('onlysubtitles', False):
579 if self.params.get('allsubtitles', False) and 'subtitles' in info_dict and info_dict['subtitles']:
580 subtitles = info_dict['subtitles']
581 sub_format = self.params.get('subtitlesformat')
582 for subtitle in subtitles:
583 (sub_error, sub_lang, sub) = subtitle
585 self.report_warning("Some error while getting the subtitles")
588 sub_filename = filename.rsplit('.', 1)[0] + u'.' + sub_lang + u'.' + sub_format
589 self.report_writesubtitles(sub_filename)
590 with io.open(encodeFilename(sub_filename), 'w', encoding='utf-8') as subfile:
592 except (OSError, IOError):
593 self.trouble(u'ERROR: Cannot write subtitles file ' + descfn)
595 if self.params.get('onlysubtitles', False):
598 if self.params.get('writeinfojson', False):
599 infofn = filename + u'.info.json'
600 self.report_writeinfojson(infofn)
602 json_info_dict = dict((k, v) for k,v in info_dict.items() if not k in ['urlhandle'])
603 write_json_file(json_info_dict, encodeFilename(infofn))
604 except (OSError, IOError):
605 self.report_error(u'Cannot write metadata to JSON file ' + infofn)
608 if not self.params.get('skip_download', False):
609 if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(filename)):
613 success = self._do_download(filename, info_dict)
614 except (OSError, IOError) as err:
615 raise UnavailableVideoError()
616 except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
617 self.report_error(u'unable to download video data: %s' % str(err))
619 except (ContentTooShortError, ) as err:
620 self.report_error(u'content too short (expected %s bytes and served %s)' % (err.expected, err.downloaded))
625 self.post_process(filename, info_dict)
626 except (PostProcessingError) as err:
627 self.report_error(u'postprocessing: %s' % str(err))
630 def download(self, url_list):
631 """Download a given list of URLs."""
632 if len(url_list) > 1 and self.fixed_template():
633 raise SameFileError(self.params['outtmpl'])
636 videos = self.extract_info(url)
638 for video in videos or []:
640 self.increment_downloads()
641 self.process_info(video)
642 except UnavailableVideoError:
643 self.trouble(u'\nERROR: unable to download video')
644 except MaxDownloadsReached:
645 self.to_screen(u'[info] Maximum number of downloaded files reached.')
648 return self._download_retcode
650 def post_process(self, filename, ie_info):
651 """Run all the postprocessors on the given file."""
653 info['filepath'] = filename
657 keep_video_wish,new_info = pp.run(info)
658 if keep_video_wish is not None:
660 keep_video = keep_video_wish
661 elif keep_video is None:
662 # No clear decision yet, let IE decide
663 keep_video = keep_video_wish
664 except PostProcessingError as e:
665 self.to_stderr(u'ERROR: ' + e.msg)
666 if keep_video is False and not self.params.get('keepvideo', False):
668 self.to_screen(u'Deleting original file %s (pass -k to keep)' % filename)
669 os.remove(encodeFilename(filename))
670 except (IOError, OSError):
671 self.report_warning(u'Unable to remove downloaded video file')
673 def _download_with_rtmpdump(self, filename, url, player_url, page_url):
674 self.report_destination(filename)
675 tmpfilename = self.temp_name(filename)
677 # Check for rtmpdump first
679 subprocess.call(['rtmpdump', '-h'], stdout=(open(os.path.devnull, 'w')), stderr=subprocess.STDOUT)
680 except (OSError, IOError):
681 self.report_error(u'RTMP download detected but "rtmpdump" could not be run')
684 # Download using rtmpdump. rtmpdump returns exit code 2 when
685 # the connection was interrumpted and resuming appears to be
686 # possible. This is part of rtmpdump's normal usage, AFAIK.
687 basic_args = ['rtmpdump', '-q', '-r', url, '-o', tmpfilename]
688 if player_url is not None:
689 basic_args += ['-W', player_url]
690 if page_url is not None:
691 basic_args += ['--pageUrl', page_url]
692 args = basic_args + [[], ['-e', '-k', '1']][self.params.get('continuedl', False)]
693 if self.params.get('verbose', False):
696 shell_quote = lambda args: ' '.join(map(pipes.quote, args))
699 self.to_screen(u'[debug] rtmpdump command line: ' + shell_quote(args))
700 retval = subprocess.call(args)
701 while retval == 2 or retval == 1:
702 prevsize = os.path.getsize(encodeFilename(tmpfilename))
703 self.to_screen(u'\r[rtmpdump] %s bytes' % prevsize, skip_eol=True)
704 time.sleep(5.0) # This seems to be needed
705 retval = subprocess.call(basic_args + ['-e'] + [[], ['-k', '1']][retval == 1])
706 cursize = os.path.getsize(encodeFilename(tmpfilename))
707 if prevsize == cursize and retval == 1:
709 # Some rtmp streams seem abort after ~ 99.8%. Don't complain for those
710 if prevsize == cursize and retval == 2 and cursize > 1024:
711 self.to_screen(u'\r[rtmpdump] Could not download the whole video. This can happen for some advertisements.')
715 fsize = os.path.getsize(encodeFilename(tmpfilename))
716 self.to_screen(u'\r[rtmpdump] %s bytes' % fsize)
717 self.try_rename(tmpfilename, filename)
718 self._hook_progress({
719 'downloaded_bytes': fsize,
720 'total_bytes': fsize,
721 'filename': filename,
722 'status': 'finished',
726 self.to_stderr(u"\n")
727 self.report_error(u'rtmpdump exited with code %d' % retval)
730 def _do_download(self, filename, info_dict):
731 url = info_dict['url']
733 # Check file already present
734 if self.params.get('continuedl', False) and os.path.isfile(encodeFilename(filename)) and not self.params.get('nopart', False):
735 self.report_file_already_downloaded(filename)
736 self._hook_progress({
737 'filename': filename,
738 'status': 'finished',
742 # Attempt to download using rtmpdump
743 if url.startswith('rtmp'):
744 return self._download_with_rtmpdump(filename, url,
745 info_dict.get('player_url', None),
746 info_dict.get('page_url', None))
748 tmpfilename = self.temp_name(filename)
751 # Do not include the Accept-Encoding header
752 headers = {'Youtubedl-no-compression': 'True'}
753 if 'user_agent' in info_dict:
754 headers['Youtubedl-user-agent'] = info_dict['user_agent']
755 basic_request = compat_urllib_request.Request(url, None, headers)
756 request = compat_urllib_request.Request(url, None, headers)
758 if self.params.get('test', False):
759 request.add_header('Range','bytes=0-10240')
761 # Establish possible resume length
762 if os.path.isfile(encodeFilename(tmpfilename)):
763 resume_len = os.path.getsize(encodeFilename(tmpfilename))
769 if self.params.get('continuedl', False):
770 self.report_resuming_byte(resume_len)
771 request.add_header('Range','bytes=%d-' % resume_len)
777 retries = self.params.get('retries', 0)
778 while count <= retries:
779 # Establish connection
781 if count == 0 and 'urlhandle' in info_dict:
782 data = info_dict['urlhandle']
783 data = compat_urllib_request.urlopen(request)
785 except (compat_urllib_error.HTTPError, ) as err:
786 if (err.code < 500 or err.code >= 600) and err.code != 416:
787 # Unexpected HTTP error
789 elif err.code == 416:
790 # Unable to resume (requested range not satisfiable)
792 # Open the connection again without the range header
793 data = compat_urllib_request.urlopen(basic_request)
794 content_length = data.info()['Content-Length']
795 except (compat_urllib_error.HTTPError, ) as err:
796 if err.code < 500 or err.code >= 600:
799 # Examine the reported length
800 if (content_length is not None and
801 (resume_len - 100 < int(content_length) < resume_len + 100)):
802 # The file had already been fully downloaded.
803 # Explanation to the above condition: in issue #175 it was revealed that
804 # YouTube sometimes adds or removes a few bytes from the end of the file,
805 # changing the file size slightly and causing problems for some users. So
806 # I decided to implement a suggested change and consider the file
807 # completely downloaded if the file size differs less than 100 bytes from
808 # the one in the hard drive.
809 self.report_file_already_downloaded(filename)
810 self.try_rename(tmpfilename, filename)
811 self._hook_progress({
812 'filename': filename,
813 'status': 'finished',
817 # The length does not match, we start the download over
818 self.report_unable_to_resume()
824 self.report_retry(count, retries)
827 self.report_error(u'giving up after %s retries' % retries)
830 data_len = data.info().get('Content-length', None)
831 if data_len is not None:
832 data_len = int(data_len) + resume_len
833 min_data_len = self.params.get("min_filesize", None)
834 max_data_len = self.params.get("max_filesize", None)
835 if min_data_len is not None and data_len < min_data_len:
836 self.to_screen(u'\r[download] File is smaller than min-filesize (%s bytes < %s bytes). Aborting.' % (data_len, min_data_len))
838 if max_data_len is not None and data_len > max_data_len:
839 self.to_screen(u'\r[download] File is larger than max-filesize (%s bytes > %s bytes). Aborting.' % (data_len, max_data_len))
842 data_len_str = self.format_bytes(data_len)
843 byte_counter = 0 + resume_len
844 block_size = self.params.get('buffersize', 1024)
849 data_block = data.read(block_size)
851 if len(data_block) == 0:
853 byte_counter += len(data_block)
855 # Open file just in time
858 (stream, tmpfilename) = sanitize_open(tmpfilename, open_mode)
859 assert stream is not None
860 filename = self.undo_temp_name(tmpfilename)
861 self.report_destination(filename)
862 except (OSError, IOError) as err:
863 self.report_error(u'unable to open for writing: %s' % str(err))
866 stream.write(data_block)
867 except (IOError, OSError) as err:
868 self.to_stderr(u"\n")
869 self.report_error(u'unable to write data: %s' % str(err))
871 if not self.params.get('noresizebuffer', False):
872 block_size = self.best_block_size(after - before, len(data_block))
875 speed_str = self.calc_speed(start, time.time(), byte_counter - resume_len)
877 self.report_progress('Unknown %', data_len_str, speed_str, 'Unknown ETA')
879 percent_str = self.calc_percent(byte_counter, data_len)
880 eta_str = self.calc_eta(start, time.time(), data_len - resume_len, byte_counter - resume_len)
881 self.report_progress(percent_str, data_len_str, speed_str, eta_str)
883 self._hook_progress({
884 'downloaded_bytes': byte_counter,
885 'total_bytes': data_len,
886 'tmpfilename': tmpfilename,
887 'filename': filename,
888 'status': 'downloading',
892 self.slow_down(start, byte_counter - resume_len)
895 self.to_stderr(u"\n")
896 self.report_error(u'Did not get any data blocks')
900 if data_len is not None and byte_counter != data_len:
901 raise ContentTooShortError(byte_counter, int(data_len))
902 self.try_rename(tmpfilename, filename)
904 # Update file modification time
905 if self.params.get('updatetime', True):
906 info_dict['filetime'] = self.try_utime(filename, data.info().get('last-modified', None))
908 self._hook_progress({
909 'downloaded_bytes': byte_counter,
910 'total_bytes': byte_counter,
911 'filename': filename,
912 'status': 'finished',
917 def _hook_progress(self, status):
918 for ph in self._progress_hooks:
921 def add_progress_hook(self, ph):
922 """ ph gets called on download progress, with a dictionary with the entries
923 * filename: The final filename
924 * status: One of "downloading" and "finished"
926 It can also have some of the following entries:
928 * downloaded_bytes: Bytes on disks
929 * total_bytes: Total bytes, None if unknown
930 * tmpfilename: The filename we're currently writing to
932 Hooks are guaranteed to be called at least once (with status "finished")
933 if the download is successful.
935 self._progress_hooks.append(ph)