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
85 min_filesize: Skip files smaller than this size
86 max_filesize: Skip files larger than this size
92 _download_retcode = None
96 def __init__(self, params):
97 """Create a FileDownloader object with the given options."""
100 self._progress_hooks = []
101 self._download_retcode = 0
102 self._num_downloads = 0
103 self._screen_file = [sys.stdout, sys.stderr][params.get('logtostderr', False)]
106 if '%(stitle)s' in self.params['outtmpl']:
107 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.')
110 def format_bytes(bytes):
113 if type(bytes) is str:
118 exponent = int(math.log(bytes, 1024.0))
119 suffix = 'bkMGTPEZY'[exponent]
120 converted = float(bytes) / float(1024 ** exponent)
121 return '%.2f%s' % (converted, suffix)
124 def calc_percent(byte_counter, data_len):
127 return '%6s' % ('%3.1f%%' % (float(byte_counter) / float(data_len) * 100.0))
130 def calc_eta(start, now, total, current):
134 if current == 0 or dif < 0.001: # One millisecond
136 rate = float(current) / dif
137 eta = int((float(total) - float(current)) / rate)
138 (eta_mins, eta_secs) = divmod(eta, 60)
141 return '%02d:%02d' % (eta_mins, eta_secs)
144 def calc_speed(start, now, bytes):
146 if bytes == 0 or dif < 0.001: # One millisecond
147 return '%10s' % '---b/s'
148 return '%10s' % ('%s/s' % FileDownloader.format_bytes(float(bytes) / dif))
151 def best_block_size(elapsed_time, bytes):
152 new_min = max(bytes / 2.0, 1.0)
153 new_max = min(max(bytes * 2.0, 1.0), 4194304) # Do not surpass 4 MB
154 if elapsed_time < 0.001:
156 rate = bytes / elapsed_time
164 def parse_bytes(bytestr):
165 """Parse a string indicating a byte quantity into an integer."""
166 matchobj = re.match(r'(?i)^(\d+(?:\.\d+)?)([kMGTPEZY]?)$', bytestr)
169 number = float(matchobj.group(1))
170 multiplier = 1024.0 ** 'bkmgtpezy'.index(matchobj.group(2).lower())
171 return int(round(number * multiplier))
173 def add_info_extractor(self, ie):
174 """Add an InfoExtractor object to the end of the list."""
176 ie.set_downloader(self)
178 def add_post_processor(self, pp):
179 """Add a PostProcessor object to the end of the chain."""
181 pp.set_downloader(self)
183 def to_screen(self, message, skip_eol=False):
184 """Print message to stdout if not in quiet mode."""
185 assert type(message) == type(u'')
186 if not self.params.get('quiet', False):
187 terminator = [u'\n', u''][skip_eol]
188 output = message + terminator
189 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
190 output = output.encode(preferredencoding(), 'ignore')
191 self._screen_file.write(output)
192 self._screen_file.flush()
194 def to_stderr(self, message):
195 """Print message to stderr."""
196 assert type(message) == type(u'')
197 output = message + u'\n'
198 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
199 output = output.encode(preferredencoding())
200 sys.stderr.write(output)
202 def to_cons_title(self, message):
203 """Set console/terminal window title to message."""
204 if not self.params.get('consoletitle', False):
206 if os.name == 'nt' and ctypes.windll.kernel32.GetConsoleWindow():
207 # c_wchar_p() might not be necessary if `message` is
208 # already of type unicode()
209 ctypes.windll.kernel32.SetConsoleTitleW(ctypes.c_wchar_p(message))
210 elif 'TERM' in os.environ:
211 self.to_screen('\033]0;%s\007' % message, skip_eol=True)
213 def fixed_template(self):
214 """Checks if the output template is fixed."""
215 return (re.search(u'(?u)%\\(.+?\\)s', self.params['outtmpl']) is None)
217 def trouble(self, message=None, tb=None):
218 """Determine action to take when a download problem appears.
220 Depending on if the downloader has been configured to ignore
221 download errors or not, this method may throw an exception or
222 not when errors are found, after printing the message.
224 tb, if given, is additional traceback information.
226 if message is not None:
227 self.to_stderr(message)
228 if self.params.get('verbose'):
230 tb_data = traceback.format_list(traceback.extract_stack())
231 tb = u''.join(tb_data)
233 if not self.params.get('ignoreerrors', False):
234 raise DownloadError(message)
235 self._download_retcode = 1
237 def slow_down(self, start_time, byte_counter):
238 """Sleep if the download speed is over the rate limit."""
239 rate_limit = self.params.get('ratelimit', None)
240 if rate_limit is None or byte_counter == 0:
243 elapsed = now - start_time
246 speed = float(byte_counter) / elapsed
247 if speed > rate_limit:
248 time.sleep((byte_counter - rate_limit * (now - start_time)) / rate_limit)
250 def temp_name(self, filename):
251 """Returns a temporary filename for the given filename."""
252 if self.params.get('nopart', False) or filename == u'-' or \
253 (os.path.exists(encodeFilename(filename)) and not os.path.isfile(encodeFilename(filename))):
255 return filename + u'.part'
257 def undo_temp_name(self, filename):
258 if filename.endswith(u'.part'):
259 return filename[:-len(u'.part')]
262 def try_rename(self, old_filename, new_filename):
264 if old_filename == new_filename:
266 os.rename(encodeFilename(old_filename), encodeFilename(new_filename))
267 except (IOError, OSError) as err:
268 self.trouble(u'ERROR: unable to rename file')
270 def try_utime(self, filename, last_modified_hdr):
271 """Try to set the last-modified time of the given file."""
272 if last_modified_hdr is None:
274 if not os.path.isfile(encodeFilename(filename)):
276 timestr = last_modified_hdr
279 filetime = timeconvert(timestr)
283 os.utime(filename, (time.time(), filetime))
288 def report_writedescription(self, descfn):
289 """ Report that the description file is being written """
290 self.to_screen(u'[info] Writing video description to: ' + descfn)
292 def report_writesubtitles(self, srtfn):
293 """ Report that the subtitles file is being written """
294 self.to_screen(u'[info] Writing video subtitles to: ' + srtfn)
296 def report_writeinfojson(self, infofn):
297 """ Report that the metadata file has been written """
298 self.to_screen(u'[info] Video description metadata as JSON to: ' + infofn)
300 def report_destination(self, filename):
301 """Report destination filename."""
302 self.to_screen(u'[download] Destination: ' + filename)
304 def report_progress(self, percent_str, data_len_str, speed_str, eta_str):
305 """Report download progress."""
306 if self.params.get('noprogress', False):
308 if self.params.get('progress_with_newline', False):
309 self.to_screen(u'[download] %s of %s at %s ETA %s' %
310 (percent_str, data_len_str, speed_str, eta_str))
312 self.to_screen(u'\r[download] %s of %s at %s ETA %s' %
313 (percent_str, data_len_str, speed_str, eta_str), skip_eol=True)
314 self.to_cons_title(u'youtube-dl - %s of %s at %s ETA %s' %
315 (percent_str.strip(), data_len_str.strip(), speed_str.strip(), eta_str.strip()))
317 def report_resuming_byte(self, resume_len):
318 """Report attempt to resume at given byte."""
319 self.to_screen(u'[download] Resuming download at byte %s' % resume_len)
321 def report_retry(self, count, retries):
322 """Report retry in case of HTTP error 5xx"""
323 self.to_screen(u'[download] Got server HTTP error. Retrying (attempt %d of %d)...' % (count, retries))
325 def report_file_already_downloaded(self, file_name):
326 """Report file has already been fully downloaded."""
328 self.to_screen(u'[download] %s has already been downloaded' % file_name)
329 except (UnicodeEncodeError) as err:
330 self.to_screen(u'[download] The file has already been downloaded')
332 def report_unable_to_resume(self):
333 """Report it was impossible to resume download."""
334 self.to_screen(u'[download] Unable to resume')
336 def report_finish(self):
337 """Report download finished."""
338 if self.params.get('noprogress', False):
339 self.to_screen(u'[download] Download completed')
343 def increment_downloads(self):
344 """Increment the ordinal that assigns a number to each file."""
345 self._num_downloads += 1
347 def prepare_filename(self, info_dict):
348 """Generate the output filename."""
350 template_dict = dict(info_dict)
352 template_dict['epoch'] = int(time.time())
353 template_dict['autonumber'] = u'%05d' % self._num_downloads
355 sanitize = lambda k,v: sanitize_filename(
356 u'NA' if v is None else compat_str(v),
357 restricted=self.params.get('restrictfilenames'),
359 template_dict = dict((k, sanitize(k, v)) for k,v in template_dict.items())
361 filename = self.params['outtmpl'] % template_dict
363 except (ValueError, KeyError) as err:
364 self.trouble(u'ERROR: invalid system charset or erroneous output template')
367 def _match_entry(self, info_dict):
368 """ Returns None iff the file should be downloaded """
370 title = info_dict['title']
371 matchtitle = self.params.get('matchtitle', False)
373 if not re.search(matchtitle, title, re.IGNORECASE):
374 return u'[download] "' + title + '" title did not match pattern "' + matchtitle + '"'
375 rejecttitle = self.params.get('rejecttitle', False)
377 if re.search(rejecttitle, title, re.IGNORECASE):
378 return u'"' + title + '" title matched reject pattern "' + rejecttitle + '"'
381 def extract_info(self, url):
383 Returns a list with a dictionary for each video we find.
385 suitable_found = False
387 # Go to next InfoExtractor if not suitable
388 if not ie.suitable(url):
391 # Warn if the _WORKING attribute is False
393 self.to_stderr(u'WARNING: the program functionality for this site has been marked as broken, '
394 u'and will probably not work. If you want to go on, use the -i option.')
396 # Suitable InfoExtractor found
397 suitable_found = True
399 # Extract information from URL and process it
401 videos = ie.extract(url)
402 for video in videos or []:
403 if not 'extractor' in video:
404 #The extractor has already been set somewher else
405 video['extractor'] = ie.IE_NAME
407 except ExtractorError as de: # An error we somewhat expected
408 self.trouble(u'ERROR: ' + compat_str(de), de.format_traceback())
410 except Exception as e:
411 if self.params.get('ignoreerrors', False):
412 self.trouble(u'ERROR: ' + compat_str(e), tb=compat_str(traceback.format_exc()))
416 if not suitable_found:
417 self.trouble(u'ERROR: no suitable InfoExtractor: %s' % url)
418 def extract_info_iterable(self, urls):
420 Return the videos founded for the urls
424 results.extend(self.extract_info(url))
427 def process_info(self, info_dict):
428 """Process a single dictionary returned by an InfoExtractor."""
430 # Keep for backwards compatibility
431 info_dict['stitle'] = info_dict['title']
433 if not 'format' in info_dict:
434 info_dict['format'] = info_dict['ext']
436 reason = self._match_entry(info_dict)
437 if reason is not None:
438 self.to_screen(u'[download] ' + reason)
441 max_downloads = self.params.get('max_downloads')
442 if max_downloads is not None:
443 if self._num_downloads > int(max_downloads):
444 raise MaxDownloadsReached()
446 filename = self.prepare_filename(info_dict)
449 if self.params.get('forcetitle', False):
450 compat_print(info_dict['title'])
451 if self.params.get('forceurl', False):
452 compat_print(info_dict['url'])
453 if self.params.get('forcethumbnail', False) and 'thumbnail' in info_dict:
454 compat_print(info_dict['thumbnail'])
455 if self.params.get('forcedescription', False) and 'description' in info_dict:
456 compat_print(info_dict['description'])
457 if self.params.get('forcefilename', False) and filename is not None:
458 compat_print(filename)
459 if self.params.get('forceformat', False):
460 compat_print(info_dict['format'])
462 # Do nothing else if in simulate mode
463 if self.params.get('simulate', False):
470 dn = os.path.dirname(encodeFilename(filename))
471 if dn != '' and not os.path.exists(dn): # dn is already encoded
473 except (OSError, IOError) as err:
474 self.trouble(u'ERROR: unable to create directory ' + compat_str(err))
477 if self.params.get('writedescription', False):
479 descfn = filename + u'.description'
480 self.report_writedescription(descfn)
481 with io.open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
482 descfile.write(info_dict['description'])
483 except (OSError, IOError):
484 self.trouble(u'ERROR: Cannot write description file ' + descfn)
487 if self.params.get('writesubtitles', False) and 'subtitles' in info_dict and info_dict['subtitles']:
488 # subtitles download errors are already managed as troubles in relevant IE
489 # that way it will silently go on when used with unsupporting IE
491 srtfn = filename.rsplit('.', 1)[0] + u'.srt'
492 self.report_writesubtitles(srtfn)
493 with io.open(encodeFilename(srtfn), 'w', encoding='utf-8') as srtfile:
494 srtfile.write(info_dict['subtitles'])
495 except (OSError, IOError):
496 self.trouble(u'ERROR: Cannot write subtitles file ' + descfn)
499 if self.params.get('writeinfojson', False):
500 infofn = filename + u'.info.json'
501 self.report_writeinfojson(infofn)
503 json_info_dict = dict((k, v) for k,v in info_dict.items() if not k in ['urlhandle'])
504 write_json_file(json_info_dict, encodeFilename(infofn))
505 except (OSError, IOError):
506 self.trouble(u'ERROR: Cannot write metadata to JSON file ' + infofn)
509 if not self.params.get('skip_download', False):
510 if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(filename)):
514 success = self._do_download(filename, info_dict)
515 except (OSError, IOError) as err:
516 raise UnavailableVideoError()
517 except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
518 self.trouble(u'ERROR: unable to download video data: %s' % str(err))
520 except (ContentTooShortError, ) as err:
521 self.trouble(u'ERROR: content too short (expected %s bytes and served %s)' % (err.expected, err.downloaded))
526 self.post_process(filename, info_dict)
527 except (PostProcessingError) as err:
528 self.trouble(u'ERROR: postprocessing: %s' % str(err))
531 def download(self, url_list):
532 """Download a given list of URLs."""
533 if len(url_list) > 1 and self.fixed_template():
534 raise SameFileError(self.params['outtmpl'])
537 videos = self.extract_info(url)
539 for video in videos or []:
541 self.increment_downloads()
542 self.process_info(video)
543 except UnavailableVideoError:
544 self.trouble(u'\nERROR: unable to download video')
546 return self._download_retcode
548 def post_process(self, filename, ie_info):
549 """Run all the postprocessors on the given file."""
551 info['filepath'] = filename
555 keep_video_wish,new_info = pp.run(info)
556 if keep_video_wish is not None:
558 keep_video = keep_video_wish
559 elif keep_video is None:
560 # No clear decision yet, let IE decide
561 keep_video = keep_video_wish
562 except PostProcessingError as e:
563 self.to_stderr(u'ERROR: ' + e.msg)
564 if keep_video is False and not self.params.get('keepvideo', False):
566 self.to_screen(u'Deleting original file %s (pass -k to keep)' % filename)
567 os.remove(encodeFilename(filename))
568 except (IOError, OSError):
569 self.to_stderr(u'WARNING: Unable to remove downloaded video file')
571 def _download_with_rtmpdump(self, filename, url, player_url, page_url):
572 self.report_destination(filename)
573 tmpfilename = self.temp_name(filename)
575 # Check for rtmpdump first
577 subprocess.call(['rtmpdump', '-h'], stdout=(file(os.path.devnull, 'w')), stderr=subprocess.STDOUT)
578 except (OSError, IOError):
579 self.trouble(u'ERROR: RTMP download detected but "rtmpdump" could not be run')
582 # Download using rtmpdump. rtmpdump returns exit code 2 when
583 # the connection was interrumpted and resuming appears to be
584 # possible. This is part of rtmpdump's normal usage, AFAIK.
585 basic_args = ['rtmpdump', '-q', '-r', url, '-o', tmpfilename]
586 if player_url is not None:
587 basic_args += ['-W', player_url]
588 if page_url is not None:
589 basic_args += ['--pageUrl', page_url]
590 args = basic_args + [[], ['-e', '-k', '1']][self.params.get('continuedl', False)]
591 if self.params.get('verbose', False):
594 shell_quote = lambda args: ' '.join(map(pipes.quote, args))
597 self.to_screen(u'[debug] rtmpdump command line: ' + shell_quote(args))
598 retval = subprocess.call(args)
599 while retval == 2 or retval == 1:
600 prevsize = os.path.getsize(encodeFilename(tmpfilename))
601 self.to_screen(u'\r[rtmpdump] %s bytes' % prevsize, skip_eol=True)
602 time.sleep(5.0) # This seems to be needed
603 retval = subprocess.call(basic_args + ['-e'] + [[], ['-k', '1']][retval == 1])
604 cursize = os.path.getsize(encodeFilename(tmpfilename))
605 if prevsize == cursize and retval == 1:
607 # Some rtmp streams seem abort after ~ 99.8%. Don't complain for those
608 if prevsize == cursize and retval == 2 and cursize > 1024:
609 self.to_screen(u'\r[rtmpdump] Could not download the whole video. This can happen for some advertisements.')
613 fsize = os.path.getsize(encodeFilename(tmpfilename))
614 self.to_screen(u'\r[rtmpdump] %s bytes' % fsize)
615 self.try_rename(tmpfilename, filename)
616 self._hook_progress({
617 'downloaded_bytes': fsize,
618 'total_bytes': fsize,
619 'filename': filename,
620 'status': 'finished',
624 self.trouble(u'\nERROR: rtmpdump exited with code %d' % retval)
627 def _do_download(self, filename, info_dict):
628 url = info_dict['url']
630 # Check file already present
631 if self.params.get('continuedl', False) and os.path.isfile(encodeFilename(filename)) and not self.params.get('nopart', False):
632 self.report_file_already_downloaded(filename)
633 self._hook_progress({
634 'filename': filename,
635 'status': 'finished',
639 # Attempt to download using rtmpdump
640 if url.startswith('rtmp'):
641 return self._download_with_rtmpdump(filename, url,
642 info_dict.get('player_url', None),
643 info_dict.get('page_url', None))
645 tmpfilename = self.temp_name(filename)
648 # Do not include the Accept-Encoding header
649 headers = {'Youtubedl-no-compression': 'True'}
650 if 'user_agent' in info_dict:
651 headers['Youtubedl-user-agent'] = info_dict['user_agent']
652 basic_request = compat_urllib_request.Request(url, None, headers)
653 request = compat_urllib_request.Request(url, None, headers)
655 if self.params.get('test', False):
656 request.add_header('Range','bytes=0-10240')
658 # Establish possible resume length
659 if os.path.isfile(encodeFilename(tmpfilename)):
660 resume_len = os.path.getsize(encodeFilename(tmpfilename))
666 if self.params.get('continuedl', False):
667 self.report_resuming_byte(resume_len)
668 request.add_header('Range','bytes=%d-' % resume_len)
674 retries = self.params.get('retries', 0)
675 while count <= retries:
676 # Establish connection
678 if count == 0 and 'urlhandle' in info_dict:
679 data = info_dict['urlhandle']
680 data = compat_urllib_request.urlopen(request)
682 except (compat_urllib_error.HTTPError, ) as err:
683 if (err.code < 500 or err.code >= 600) and err.code != 416:
684 # Unexpected HTTP error
686 elif err.code == 416:
687 # Unable to resume (requested range not satisfiable)
689 # Open the connection again without the range header
690 data = compat_urllib_request.urlopen(basic_request)
691 content_length = data.info()['Content-Length']
692 except (compat_urllib_error.HTTPError, ) as err:
693 if err.code < 500 or err.code >= 600:
696 # Examine the reported length
697 if (content_length is not None and
698 (resume_len - 100 < int(content_length) < resume_len + 100)):
699 # The file had already been fully downloaded.
700 # Explanation to the above condition: in issue #175 it was revealed that
701 # YouTube sometimes adds or removes a few bytes from the end of the file,
702 # changing the file size slightly and causing problems for some users. So
703 # I decided to implement a suggested change and consider the file
704 # completely downloaded if the file size differs less than 100 bytes from
705 # the one in the hard drive.
706 self.report_file_already_downloaded(filename)
707 self.try_rename(tmpfilename, filename)
708 self._hook_progress({
709 'filename': filename,
710 'status': 'finished',
714 # The length does not match, we start the download over
715 self.report_unable_to_resume()
721 self.report_retry(count, retries)
724 self.trouble(u'ERROR: giving up after %s retries' % retries)
727 data_len = data.info().get('Content-length', None)
728 if data_len is not None:
729 data_len = int(data_len) + resume_len
730 min_data_len = self.params.get("min_filesize", None)
731 max_data_len = self.params.get("max_filesize", None)
732 if min_data_len is not None and data_len < min_data_len:
733 self.to_screen(u'\r[download] File is smaller than min-filesize (%s bytes < %s bytes). Aborting.' % (data_len, min_data_len))
735 if max_data_len is not None and data_len > max_data_len:
736 self.to_screen(u'\r[download] File is larger than max-filesize (%s bytes > %s bytes). Aborting.' % (data_len, max_data_len))
739 data_len_str = self.format_bytes(data_len)
740 byte_counter = 0 + resume_len
741 block_size = self.params.get('buffersize', 1024)
746 data_block = data.read(block_size)
748 if len(data_block) == 0:
750 byte_counter += len(data_block)
752 # Open file just in time
755 (stream, tmpfilename) = sanitize_open(tmpfilename, open_mode)
756 assert stream is not None
757 filename = self.undo_temp_name(tmpfilename)
758 self.report_destination(filename)
759 except (OSError, IOError) as err:
760 self.trouble(u'ERROR: unable to open for writing: %s' % str(err))
763 stream.write(data_block)
764 except (IOError, OSError) as err:
765 self.trouble(u'\nERROR: unable to write data: %s' % str(err))
767 if not self.params.get('noresizebuffer', False):
768 block_size = self.best_block_size(after - before, len(data_block))
771 speed_str = self.calc_speed(start, time.time(), byte_counter - resume_len)
773 self.report_progress('Unknown %', data_len_str, speed_str, 'Unknown ETA')
775 percent_str = self.calc_percent(byte_counter, data_len)
776 eta_str = self.calc_eta(start, time.time(), data_len - resume_len, byte_counter - resume_len)
777 self.report_progress(percent_str, data_len_str, speed_str, eta_str)
779 self._hook_progress({
780 'downloaded_bytes': byte_counter,
781 'total_bytes': data_len,
782 'tmpfilename': tmpfilename,
783 'filename': filename,
784 'status': 'downloading',
788 self.slow_down(start, byte_counter - resume_len)
791 self.trouble(u'\nERROR: Did not get any data blocks')
795 if data_len is not None and byte_counter != data_len:
796 raise ContentTooShortError(byte_counter, int(data_len))
797 self.try_rename(tmpfilename, filename)
799 # Update file modification time
800 if self.params.get('updatetime', True):
801 info_dict['filetime'] = self.try_utime(filename, data.info().get('last-modified', None))
803 self._hook_progress({
804 'downloaded_bytes': byte_counter,
805 'total_bytes': byte_counter,
806 'filename': filename,
807 'status': 'finished',
812 def _hook_progress(self, status):
813 for ph in self._progress_hooks:
816 def add_progress_hook(self, ph):
817 """ ph gets called on download progress, with a dictionary with the entries
818 * filename: The final filename
819 * status: One of "downloading" and "finished"
821 It can also have some of the following entries:
823 * downloaded_bytes: Bytes on disks
824 * total_bytes: Total bytes, None if unknown
825 * tmpfilename: The filename we're currently writing to
827 Hooks are guaranteed to be called at least once (with status "finished")
828 if the download is successful.
830 self._progress_hooks.append(ph)