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 .srt file
82 subtitleslang: Language of the subtitles to download
83 test: Download only first bytes to test the downloader.
84 keepvideo: Keep the video file after post-processing
90 _download_retcode = None
94 def __init__(self, params):
95 """Create a FileDownloader object with the given options."""
98 self._progress_hooks = []
99 self._download_retcode = 0
100 self._num_downloads = 0
101 self._screen_file = [sys.stdout, sys.stderr][params.get('logtostderr', False)]
104 if '%(stitle)s' in self.params['outtmpl']:
105 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.')
108 def format_bytes(bytes):
111 if type(bytes) is str:
116 exponent = int(math.log(bytes, 1024.0))
117 suffix = 'bkMGTPEZY'[exponent]
118 converted = float(bytes) / float(1024 ** exponent)
119 return '%.2f%s' % (converted, suffix)
122 def calc_percent(byte_counter, data_len):
125 return '%6s' % ('%3.1f%%' % (float(byte_counter) / float(data_len) * 100.0))
128 def calc_eta(start, now, total, current):
132 if current == 0 or dif < 0.001: # One millisecond
134 rate = float(current) / dif
135 eta = int((float(total) - float(current)) / rate)
136 (eta_mins, eta_secs) = divmod(eta, 60)
139 return '%02d:%02d' % (eta_mins, eta_secs)
142 def calc_speed(start, now, bytes):
144 if bytes == 0 or dif < 0.001: # One millisecond
145 return '%10s' % '---b/s'
146 return '%10s' % ('%s/s' % FileDownloader.format_bytes(float(bytes) / dif))
149 def best_block_size(elapsed_time, bytes):
150 new_min = max(bytes / 2.0, 1.0)
151 new_max = min(max(bytes * 2.0, 1.0), 4194304) # Do not surpass 4 MB
152 if elapsed_time < 0.001:
154 rate = bytes / elapsed_time
162 def parse_bytes(bytestr):
163 """Parse a string indicating a byte quantity into an integer."""
164 matchobj = re.match(r'(?i)^(\d+(?:\.\d+)?)([kMGTPEZY]?)$', bytestr)
167 number = float(matchobj.group(1))
168 multiplier = 1024.0 ** 'bkmgtpezy'.index(matchobj.group(2).lower())
169 return int(round(number * multiplier))
171 def add_info_extractor(self, ie):
172 """Add an InfoExtractor object to the end of the list."""
174 ie.set_downloader(self)
176 def add_post_processor(self, pp):
177 """Add a PostProcessor object to the end of the chain."""
179 pp.set_downloader(self)
181 def to_screen(self, message, skip_eol=False):
182 """Print message to stdout if not in quiet mode."""
183 assert type(message) == type(u'')
184 if not self.params.get('quiet', False):
185 terminator = [u'\n', u''][skip_eol]
186 output = message + terminator
187 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
188 output = output.encode(preferredencoding(), 'ignore')
189 self._screen_file.write(output)
190 self._screen_file.flush()
192 def to_stderr(self, message):
193 """Print message to stderr."""
194 assert type(message) == type(u'')
195 output = message + u'\n'
196 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
197 output = output.encode(preferredencoding())
198 sys.stderr.write(output)
200 def to_cons_title(self, message):
201 """Set console/terminal window title to message."""
202 if not self.params.get('consoletitle', False):
204 if os.name == 'nt' and ctypes.windll.kernel32.GetConsoleWindow():
205 # c_wchar_p() might not be necessary if `message` is
206 # already of type unicode()
207 ctypes.windll.kernel32.SetConsoleTitleW(ctypes.c_wchar_p(message))
208 elif 'TERM' in os.environ:
209 sys.stderr.write('\033]0;%s\007' % message.encode(preferredencoding()))
211 def fixed_template(self):
212 """Checks if the output template is fixed."""
213 return (re.search(u'(?u)%\\(.+?\\)s', self.params['outtmpl']) is None)
215 def trouble(self, message=None, tb=None):
216 """Determine action to take when a download problem appears.
218 Depending on if the downloader has been configured to ignore
219 download errors or not, this method may throw an exception or
220 not when errors are found, after printing the message.
222 tb, if given, is additional traceback information.
224 if message is not None:
225 self.to_stderr(message)
226 if self.params.get('verbose'):
228 tb_data = traceback.format_list(traceback.extract_stack())
229 tb = u''.join(tb_data)
231 if not self.params.get('ignoreerrors', False):
232 raise DownloadError(message)
233 self._download_retcode = 1
235 def slow_down(self, start_time, byte_counter):
236 """Sleep if the download speed is over the rate limit."""
237 rate_limit = self.params.get('ratelimit', None)
238 if rate_limit is None or byte_counter == 0:
241 elapsed = now - start_time
244 speed = float(byte_counter) / elapsed
245 if speed > rate_limit:
246 time.sleep((byte_counter - rate_limit * (now - start_time)) / rate_limit)
248 def temp_name(self, filename):
249 """Returns a temporary filename for the given filename."""
250 if self.params.get('nopart', False) or filename == u'-' or \
251 (os.path.exists(encodeFilename(filename)) and not os.path.isfile(encodeFilename(filename))):
253 return filename + u'.part'
255 def undo_temp_name(self, filename):
256 if filename.endswith(u'.part'):
257 return filename[:-len(u'.part')]
260 def try_rename(self, old_filename, new_filename):
262 if old_filename == new_filename:
264 os.rename(encodeFilename(old_filename), encodeFilename(new_filename))
265 except (IOError, OSError) as err:
266 self.trouble(u'ERROR: unable to rename file')
268 def try_utime(self, filename, last_modified_hdr):
269 """Try to set the last-modified time of the given file."""
270 if last_modified_hdr is None:
272 if not os.path.isfile(encodeFilename(filename)):
274 timestr = last_modified_hdr
277 filetime = timeconvert(timestr)
281 os.utime(filename, (time.time(), filetime))
286 def report_writedescription(self, descfn):
287 """ Report that the description file is being written """
288 self.to_screen(u'[info] Writing video description to: ' + descfn)
290 def report_writesubtitles(self, srtfn):
291 """ Report that the subtitles file is being written """
292 self.to_screen(u'[info] Writing video subtitles to: ' + srtfn)
294 def report_writeinfojson(self, infofn):
295 """ Report that the metadata file has been written """
296 self.to_screen(u'[info] Video description metadata as JSON to: ' + infofn)
298 def report_destination(self, filename):
299 """Report destination filename."""
300 self.to_screen(u'[download] Destination: ' + filename)
302 def report_progress(self, percent_str, data_len_str, speed_str, eta_str):
303 """Report download progress."""
304 if self.params.get('noprogress', False):
306 self.to_screen(u'\r[download] %s of %s at %s ETA %s' %
307 (percent_str, data_len_str, speed_str, eta_str), skip_eol=True)
308 self.to_cons_title(u'youtube-dl - %s of %s at %s ETA %s' %
309 (percent_str.strip(), data_len_str.strip(), speed_str.strip(), eta_str.strip()))
311 def report_resuming_byte(self, resume_len):
312 """Report attempt to resume at given byte."""
313 self.to_screen(u'[download] Resuming download at byte %s' % resume_len)
315 def report_retry(self, count, retries):
316 """Report retry in case of HTTP error 5xx"""
317 self.to_screen(u'[download] Got server HTTP error. Retrying (attempt %d of %d)...' % (count, retries))
319 def report_file_already_downloaded(self, file_name):
320 """Report file has already been fully downloaded."""
322 self.to_screen(u'[download] %s has already been downloaded' % file_name)
323 except (UnicodeEncodeError) as err:
324 self.to_screen(u'[download] The file has already been downloaded')
326 def report_unable_to_resume(self):
327 """Report it was impossible to resume download."""
328 self.to_screen(u'[download] Unable to resume')
330 def report_finish(self):
331 """Report download finished."""
332 if self.params.get('noprogress', False):
333 self.to_screen(u'[download] Download completed')
337 def increment_downloads(self):
338 """Increment the ordinal that assigns a number to each file."""
339 self._num_downloads += 1
341 def prepare_filename(self, info_dict):
342 """Generate the output filename."""
344 template_dict = dict(info_dict)
346 template_dict['epoch'] = int(time.time())
347 template_dict['autonumber'] = u'%05d' % self._num_downloads
349 sanitize = lambda k,v: sanitize_filename(
350 u'NA' if v is None else compat_str(v),
351 restricted=self.params.get('restrictfilenames'),
353 template_dict = dict((k, sanitize(k, v)) for k,v in template_dict.items())
355 filename = self.params['outtmpl'] % template_dict
357 except (ValueError, KeyError) as err:
358 self.trouble(u'ERROR: invalid system charset or erroneous output template')
361 def _match_entry(self, info_dict):
362 """ Returns None iff the file should be downloaded """
364 title = info_dict['title']
365 matchtitle = self.params.get('matchtitle', False)
367 matchtitle = matchtitle.decode('utf8')
368 if not re.search(matchtitle, title, re.IGNORECASE):
369 return u'[download] "' + title + '" title did not match pattern "' + matchtitle + '"'
370 rejecttitle = self.params.get('rejecttitle', False)
372 rejecttitle = rejecttitle.decode('utf8')
373 if re.search(rejecttitle, title, re.IGNORECASE):
374 return u'"' + title + '" title matched reject pattern "' + rejecttitle + '"'
377 def process_info(self, info_dict):
378 """Process a single dictionary returned by an InfoExtractor."""
380 # Keep for backwards compatibility
381 info_dict['stitle'] = info_dict['title']
383 if not 'format' in info_dict:
384 info_dict['format'] = info_dict['ext']
386 reason = self._match_entry(info_dict)
387 if reason is not None:
388 self.to_screen(u'[download] ' + reason)
391 max_downloads = self.params.get('max_downloads')
392 if max_downloads is not None:
393 if self._num_downloads > int(max_downloads):
394 raise MaxDownloadsReached()
396 filename = self.prepare_filename(info_dict)
399 if self.params.get('forcetitle', False):
400 compat_print(info_dict['title'])
401 if self.params.get('forceurl', False):
402 compat_print(info_dict['url'])
403 if self.params.get('forcethumbnail', False) and 'thumbnail' in info_dict:
404 compat_print(info_dict['thumbnail'])
405 if self.params.get('forcedescription', False) and 'description' in info_dict:
406 compat_print(info_dict['description'])
407 if self.params.get('forcefilename', False) and filename is not None:
408 compat_print(filename)
409 if self.params.get('forceformat', False):
410 compat_print(info_dict['format'])
412 # Do nothing else if in simulate mode
413 if self.params.get('simulate', False):
420 dn = os.path.dirname(encodeFilename(filename))
421 if dn != '' and not os.path.exists(dn): # dn is already encoded
423 except (OSError, IOError) as err:
424 self.trouble(u'ERROR: unable to create directory ' + compat_str(err))
427 if self.params.get('writedescription', False):
429 descfn = filename + u'.description'
430 self.report_writedescription(descfn)
431 with io.open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
432 descfile.write(info_dict['description'])
433 except (OSError, IOError):
434 self.trouble(u'ERROR: Cannot write description file ' + descfn)
437 if self.params.get('writesubtitles', False) and 'subtitles' in info_dict and info_dict['subtitles']:
438 # subtitles download errors are already managed as troubles in relevant IE
439 # that way it will silently go on when used with unsupporting IE
441 srtfn = filename.rsplit('.', 1)[0] + u'.srt'
442 self.report_writesubtitles(srtfn)
443 with io.open(encodeFilename(srtfn), 'w', encoding='utf-8') as srtfile:
444 srtfile.write(info_dict['subtitles'])
445 except (OSError, IOError):
446 self.trouble(u'ERROR: Cannot write subtitles file ' + descfn)
449 if self.params.get('writeinfojson', False):
450 infofn = filename + u'.info.json'
451 self.report_writeinfojson(infofn)
453 json_info_dict = dict((k, v) for k,v in info_dict.items() if not k in ['urlhandle'])
454 write_json_file(json_info_dict, encodeFilename(infofn))
455 except (OSError, IOError):
456 self.trouble(u'ERROR: Cannot write metadata to JSON file ' + infofn)
459 if not self.params.get('skip_download', False):
460 if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(filename)):
464 success = self._do_download(filename, info_dict)
465 except (OSError, IOError) as err:
466 raise UnavailableVideoError()
467 except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
468 self.trouble(u'ERROR: unable to download video data: %s' % str(err))
470 except (ContentTooShortError, ) as err:
471 self.trouble(u'ERROR: content too short (expected %s bytes and served %s)' % (err.expected, err.downloaded))
476 self.post_process(filename, info_dict)
477 except (PostProcessingError) as err:
478 self.trouble(u'ERROR: postprocessing: %s' % str(err))
481 def download(self, url_list):
482 """Download a given list of URLs."""
483 if len(url_list) > 1 and self.fixed_template():
484 raise SameFileError(self.params['outtmpl'])
487 suitable_found = False
489 # Go to next InfoExtractor if not suitable
490 if not ie.suitable(url):
493 # Warn if the _WORKING attribute is False
495 self.to_stderr(u'WARNING: the program functionality for this site has been marked as broken, '
496 u'and will probably not work. If you want to go on, use the -i option.')
498 # Suitable InfoExtractor found
499 suitable_found = True
501 # Extract information from URL and process it
503 videos = ie.extract(url)
504 except ExtractorError as de: # An error we somewhat expected
505 self.trouble(u'ERROR: ' + compat_str(de), de.format_traceback())
507 except Exception as e:
508 if self.params.get('ignoreerrors', False):
509 self.trouble(u'ERROR: ' + compat_str(e), tb=compat_str(traceback.format_exc()))
514 if len(videos or []) > 1 and self.fixed_template():
515 raise SameFileError(self.params['outtmpl'])
517 for video in videos or []:
518 video['extractor'] = ie.IE_NAME
520 self.increment_downloads()
521 self.process_info(video)
522 except UnavailableVideoError:
523 self.trouble(u'\nERROR: unable to download video')
525 # Suitable InfoExtractor had been found; go to next URL
528 if not suitable_found:
529 self.trouble(u'ERROR: no suitable InfoExtractor: %s' % url)
531 return self._download_retcode
533 def post_process(self, filename, ie_info):
534 """Run all the postprocessors on the given file."""
536 info['filepath'] = filename
540 keep_video_wish,new_info = pp.run(info)
541 if keep_video_wish is not None:
543 keep_video = keep_video_wish
544 elif keep_video is None:
545 # No clear decision yet, let IE decide
546 keep_video = keep_video_wish
547 except PostProcessingError as e:
548 self.to_stderr(u'ERROR: ' + e.msg)
549 if keep_video is False and not self.params.get('keepvideo', False):
551 self.to_stderr(u'Deleting original file %s (pass -k to keep)' % filename)
552 os.remove(encodeFilename(filename))
553 except (IOError, OSError):
554 self.to_stderr(u'WARNING: Unable to remove downloaded video file')
556 def _download_with_rtmpdump(self, filename, url, player_url, page_url):
557 self.report_destination(filename)
558 tmpfilename = self.temp_name(filename)
560 # Check for rtmpdump first
562 subprocess.call(['rtmpdump', '-h'], stdout=(file(os.path.devnull, 'w')), stderr=subprocess.STDOUT)
563 except (OSError, IOError):
564 self.trouble(u'ERROR: RTMP download detected but "rtmpdump" could not be run')
567 # Download using rtmpdump. rtmpdump returns exit code 2 when
568 # the connection was interrumpted and resuming appears to be
569 # possible. This is part of rtmpdump's normal usage, AFAIK.
570 basic_args = ['rtmpdump', '-q', '-r', url, '-o', tmpfilename]
571 if player_url is not None:
572 basic_args += ['-W', player_url]
573 if page_url is not None:
574 basic_args += ['--pageUrl', page_url]
575 args = basic_args + [[], ['-e', '-k', '1']][self.params.get('continuedl', False)]
576 if self.params.get('verbose', False):
579 shell_quote = lambda args: ' '.join(map(pipes.quote, args))
582 self.to_screen(u'[debug] rtmpdump command line: ' + shell_quote(args))
583 retval = subprocess.call(args)
584 while retval == 2 or retval == 1:
585 prevsize = os.path.getsize(encodeFilename(tmpfilename))
586 self.to_screen(u'\r[rtmpdump] %s bytes' % prevsize, skip_eol=True)
587 time.sleep(5.0) # This seems to be needed
588 retval = subprocess.call(basic_args + ['-e'] + [[], ['-k', '1']][retval == 1])
589 cursize = os.path.getsize(encodeFilename(tmpfilename))
590 if prevsize == cursize and retval == 1:
592 # Some rtmp streams seem abort after ~ 99.8%. Don't complain for those
593 if prevsize == cursize and retval == 2 and cursize > 1024:
594 self.to_screen(u'\r[rtmpdump] Could not download the whole video. This can happen for some advertisements.')
598 fsize = os.path.getsize(encodeFilename(tmpfilename))
599 self.to_screen(u'\r[rtmpdump] %s bytes' % fsize)
600 self.try_rename(tmpfilename, filename)
601 self._hook_progress({
602 'downloaded_bytes': fsize,
603 'total_bytes': fsize,
604 'filename': filename,
605 'status': 'finished',
609 self.trouble(u'\nERROR: rtmpdump exited with code %d' % retval)
612 def _do_download(self, filename, info_dict):
613 url = info_dict['url']
615 # Check file already present
616 if self.params.get('continuedl', False) and os.path.isfile(encodeFilename(filename)) and not self.params.get('nopart', False):
617 self.report_file_already_downloaded(filename)
618 self._hook_progress({
619 'filename': filename,
620 'status': 'finished',
624 # Attempt to download using rtmpdump
625 if url.startswith('rtmp'):
626 return self._download_with_rtmpdump(filename, url,
627 info_dict.get('player_url', None),
628 info_dict.get('page_url', None))
630 tmpfilename = self.temp_name(filename)
633 # Do not include the Accept-Encoding header
634 headers = {'Youtubedl-no-compression': 'True'}
635 if 'user_agent' in info_dict:
636 headers['Youtubedl-user-agent'] = info_dict['user_agent']
637 basic_request = compat_urllib_request.Request(url, None, headers)
638 request = compat_urllib_request.Request(url, None, headers)
640 if self.params.get('test', False):
641 request.add_header('Range','bytes=0-10240')
643 # Establish possible resume length
644 if os.path.isfile(encodeFilename(tmpfilename)):
645 resume_len = os.path.getsize(encodeFilename(tmpfilename))
651 if self.params.get('continuedl', False):
652 self.report_resuming_byte(resume_len)
653 request.add_header('Range','bytes=%d-' % resume_len)
659 retries = self.params.get('retries', 0)
660 while count <= retries:
661 # Establish connection
663 if count == 0 and 'urlhandle' in info_dict:
664 data = info_dict['urlhandle']
665 data = compat_urllib_request.urlopen(request)
667 except (compat_urllib_error.HTTPError, ) as err:
668 if (err.code < 500 or err.code >= 600) and err.code != 416:
669 # Unexpected HTTP error
671 elif err.code == 416:
672 # Unable to resume (requested range not satisfiable)
674 # Open the connection again without the range header
675 data = compat_urllib_request.urlopen(basic_request)
676 content_length = data.info()['Content-Length']
677 except (compat_urllib_error.HTTPError, ) as err:
678 if err.code < 500 or err.code >= 600:
681 # Examine the reported length
682 if (content_length is not None and
683 (resume_len - 100 < int(content_length) < resume_len + 100)):
684 # The file had already been fully downloaded.
685 # Explanation to the above condition: in issue #175 it was revealed that
686 # YouTube sometimes adds or removes a few bytes from the end of the file,
687 # changing the file size slightly and causing problems for some users. So
688 # I decided to implement a suggested change and consider the file
689 # completely downloaded if the file size differs less than 100 bytes from
690 # the one in the hard drive.
691 self.report_file_already_downloaded(filename)
692 self.try_rename(tmpfilename, filename)
693 self._hook_progress({
694 'filename': filename,
695 'status': 'finished',
699 # The length does not match, we start the download over
700 self.report_unable_to_resume()
706 self.report_retry(count, retries)
709 self.trouble(u'ERROR: giving up after %s retries' % retries)
712 data_len = data.info().get('Content-length', None)
713 if data_len is not None:
714 data_len = int(data_len) + resume_len
715 data_len_str = self.format_bytes(data_len)
716 byte_counter = 0 + resume_len
717 block_size = self.params.get('buffersize', 1024)
722 data_block = data.read(block_size)
724 if len(data_block) == 0:
726 byte_counter += len(data_block)
728 # Open file just in time
731 (stream, tmpfilename) = sanitize_open(tmpfilename, open_mode)
732 assert stream is not None
733 filename = self.undo_temp_name(tmpfilename)
734 self.report_destination(filename)
735 except (OSError, IOError) as err:
736 self.trouble(u'ERROR: unable to open for writing: %s' % str(err))
739 stream.write(data_block)
740 except (IOError, OSError) as err:
741 self.trouble(u'\nERROR: unable to write data: %s' % str(err))
743 if not self.params.get('noresizebuffer', False):
744 block_size = self.best_block_size(after - before, len(data_block))
747 speed_str = self.calc_speed(start, time.time(), byte_counter - resume_len)
749 self.report_progress('Unknown %', data_len_str, speed_str, 'Unknown ETA')
751 percent_str = self.calc_percent(byte_counter, data_len)
752 eta_str = self.calc_eta(start, time.time(), data_len - resume_len, byte_counter - resume_len)
753 self.report_progress(percent_str, data_len_str, speed_str, eta_str)
755 self._hook_progress({
756 'downloaded_bytes': byte_counter,
757 'total_bytes': data_len,
758 'tmpfilename': tmpfilename,
759 'filename': filename,
760 'status': 'downloading',
764 self.slow_down(start, byte_counter - resume_len)
767 self.trouble(u'\nERROR: Did not get any data blocks')
771 if data_len is not None and byte_counter != data_len:
772 raise ContentTooShortError(byte_counter, int(data_len))
773 self.try_rename(tmpfilename, filename)
775 # Update file modification time
776 if self.params.get('updatetime', True):
777 info_dict['filetime'] = self.try_utime(filename, data.info().get('last-modified', None))
779 self._hook_progress({
780 'downloaded_bytes': byte_counter,
781 'total_bytes': byte_counter,
782 'filename': filename,
783 'status': 'finished',
788 def _hook_progress(self, status):
789 for ph in self._progress_hooks:
792 def add_progress_hook(self, ph):
793 """ ph gets called on download progress, with a dictionary with the entries
794 * filename: The final filename
795 * status: One of "downloading" and "finished"
797 It can also have some of the following entries:
799 * downloaded_bytes: Bytes on disks
800 * total_bytes: Total bytes, None if unknown
801 * tmpfilename: The filename we're currently writing to
803 Hooks are guaranteed to be called at least once (with status "finished")
804 if the download is successful.
806 self._progress_hooks.append(ph)