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.report_warning(u'%(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 report_warning(self, message):
239 Print the message to stderr, it will be prefixed with 'WARNING:'
240 If stderr is a tty file the 'WARNING:' will be colored
242 if sys.stderr.isatty():
243 _msg_header=u'\033[0;33mWARNING:\033[0m'
245 _msg_header=u'WARNING:'
246 warning_message=u'%s %s' % (_msg_header,message)
247 self.to_stderr(warning_message)
249 def slow_down(self, start_time, byte_counter):
250 """Sleep if the download speed is over the rate limit."""
251 rate_limit = self.params.get('ratelimit', None)
252 if rate_limit is None or byte_counter == 0:
255 elapsed = now - start_time
258 speed = float(byte_counter) / elapsed
259 if speed > rate_limit:
260 time.sleep((byte_counter - rate_limit * (now - start_time)) / rate_limit)
262 def temp_name(self, filename):
263 """Returns a temporary filename for the given filename."""
264 if self.params.get('nopart', False) or filename == u'-' or \
265 (os.path.exists(encodeFilename(filename)) and not os.path.isfile(encodeFilename(filename))):
267 return filename + u'.part'
269 def undo_temp_name(self, filename):
270 if filename.endswith(u'.part'):
271 return filename[:-len(u'.part')]
274 def try_rename(self, old_filename, new_filename):
276 if old_filename == new_filename:
278 os.rename(encodeFilename(old_filename), encodeFilename(new_filename))
279 except (IOError, OSError) as err:
280 self.trouble(u'ERROR: unable to rename file')
282 def try_utime(self, filename, last_modified_hdr):
283 """Try to set the last-modified time of the given file."""
284 if last_modified_hdr is None:
286 if not os.path.isfile(encodeFilename(filename)):
288 timestr = last_modified_hdr
291 filetime = timeconvert(timestr)
295 os.utime(filename, (time.time(), filetime))
300 def report_writedescription(self, descfn):
301 """ Report that the description file is being written """
302 self.to_screen(u'[info] Writing video description to: ' + descfn)
304 def report_writesubtitles(self, srtfn):
305 """ Report that the subtitles file is being written """
306 self.to_screen(u'[info] Writing video subtitles to: ' + srtfn)
308 def report_writeinfojson(self, infofn):
309 """ Report that the metadata file has been written """
310 self.to_screen(u'[info] Video description metadata as JSON to: ' + infofn)
312 def report_destination(self, filename):
313 """Report destination filename."""
314 self.to_screen(u'[download] Destination: ' + filename)
316 def report_progress(self, percent_str, data_len_str, speed_str, eta_str):
317 """Report download progress."""
318 if self.params.get('noprogress', False):
320 if self.params.get('progress_with_newline', False):
321 self.to_screen(u'[download] %s of %s at %s ETA %s' %
322 (percent_str, data_len_str, speed_str, eta_str))
324 self.to_screen(u'\r[download] %s of %s at %s ETA %s' %
325 (percent_str, data_len_str, speed_str, eta_str), skip_eol=True)
326 self.to_cons_title(u'youtube-dl - %s of %s at %s ETA %s' %
327 (percent_str.strip(), data_len_str.strip(), speed_str.strip(), eta_str.strip()))
329 def report_resuming_byte(self, resume_len):
330 """Report attempt to resume at given byte."""
331 self.to_screen(u'[download] Resuming download at byte %s' % resume_len)
333 def report_retry(self, count, retries):
334 """Report retry in case of HTTP error 5xx"""
335 self.to_screen(u'[download] Got server HTTP error. Retrying (attempt %d of %d)...' % (count, retries))
337 def report_file_already_downloaded(self, file_name):
338 """Report file has already been fully downloaded."""
340 self.to_screen(u'[download] %s has already been downloaded' % file_name)
341 except (UnicodeEncodeError) as err:
342 self.to_screen(u'[download] The file has already been downloaded')
344 def report_unable_to_resume(self):
345 """Report it was impossible to resume download."""
346 self.to_screen(u'[download] Unable to resume')
348 def report_finish(self):
349 """Report download finished."""
350 if self.params.get('noprogress', False):
351 self.to_screen(u'[download] Download completed')
355 def increment_downloads(self):
356 """Increment the ordinal that assigns a number to each file."""
357 self._num_downloads += 1
359 def prepare_filename(self, info_dict):
360 """Generate the output filename."""
362 template_dict = dict(info_dict)
364 template_dict['epoch'] = int(time.time())
365 template_dict['autonumber'] = u'%05d' % self._num_downloads
367 sanitize = lambda k,v: sanitize_filename(
368 u'NA' if v is None else compat_str(v),
369 restricted=self.params.get('restrictfilenames'),
371 template_dict = dict((k, sanitize(k, v)) for k,v in template_dict.items())
373 filename = self.params['outtmpl'] % template_dict
375 except KeyError as err:
376 self.trouble(u'ERROR: Erroneous output template')
378 except ValueError as err:
379 self.trouble(u'ERROR: Insufficient system charset ' + repr(preferredencoding()))
382 def _match_entry(self, info_dict):
383 """ Returns None iff the file should be downloaded """
385 title = info_dict['title']
386 matchtitle = self.params.get('matchtitle', False)
388 if not re.search(matchtitle, title, re.IGNORECASE):
389 return u'[download] "' + title + '" title did not match pattern "' + matchtitle + '"'
390 rejecttitle = self.params.get('rejecttitle', False)
392 if re.search(rejecttitle, title, re.IGNORECASE):
393 return u'"' + title + '" title matched reject pattern "' + rejecttitle + '"'
396 def process_info(self, info_dict):
397 """Process a single dictionary returned by an InfoExtractor."""
399 # Keep for backwards compatibility
400 info_dict['stitle'] = info_dict['title']
402 if not 'format' in info_dict:
403 info_dict['format'] = info_dict['ext']
405 reason = self._match_entry(info_dict)
406 if reason is not None:
407 self.to_screen(u'[download] ' + reason)
410 max_downloads = self.params.get('max_downloads')
411 if max_downloads is not None:
412 if self._num_downloads > int(max_downloads):
413 raise MaxDownloadsReached()
415 filename = self.prepare_filename(info_dict)
418 if self.params.get('forcetitle', False):
419 compat_print(info_dict['title'])
420 if self.params.get('forceurl', False):
421 compat_print(info_dict['url'])
422 if self.params.get('forcethumbnail', False) and 'thumbnail' in info_dict:
423 compat_print(info_dict['thumbnail'])
424 if self.params.get('forcedescription', False) and 'description' in info_dict:
425 compat_print(info_dict['description'])
426 if self.params.get('forcefilename', False) and filename is not None:
427 compat_print(filename)
428 if self.params.get('forceformat', False):
429 compat_print(info_dict['format'])
431 # Do nothing else if in simulate mode
432 if self.params.get('simulate', False):
439 dn = os.path.dirname(encodeFilename(filename))
440 if dn != '' and not os.path.exists(dn): # dn is already encoded
442 except (OSError, IOError) as err:
443 self.trouble(u'ERROR: unable to create directory ' + compat_str(err))
446 if self.params.get('writedescription', False):
448 descfn = filename + u'.description'
449 self.report_writedescription(descfn)
450 with io.open(encodeFilename(descfn), 'w', encoding='utf-8') as descfile:
451 descfile.write(info_dict['description'])
452 except (OSError, IOError):
453 self.trouble(u'ERROR: Cannot write description file ' + descfn)
456 if self.params.get('writesubtitles', False) and 'subtitles' in info_dict and info_dict['subtitles']:
457 # subtitles download errors are already managed as troubles in relevant IE
458 # that way it will silently go on when used with unsupporting IE
460 srtfn = filename.rsplit('.', 1)[0] + u'.srt'
461 self.report_writesubtitles(srtfn)
462 with io.open(encodeFilename(srtfn), 'w', encoding='utf-8') as srtfile:
463 srtfile.write(info_dict['subtitles'])
464 except (OSError, IOError):
465 self.trouble(u'ERROR: Cannot write subtitles file ' + descfn)
468 if self.params.get('writeinfojson', False):
469 infofn = filename + u'.info.json'
470 self.report_writeinfojson(infofn)
472 json_info_dict = dict((k, v) for k,v in info_dict.items() if not k in ['urlhandle'])
473 write_json_file(json_info_dict, encodeFilename(infofn))
474 except (OSError, IOError):
475 self.trouble(u'ERROR: Cannot write metadata to JSON file ' + infofn)
478 if not self.params.get('skip_download', False):
479 if self.params.get('nooverwrites', False) and os.path.exists(encodeFilename(filename)):
483 success = self._do_download(filename, info_dict)
484 except (OSError, IOError) as err:
485 raise UnavailableVideoError()
486 except (compat_urllib_error.URLError, compat_http_client.HTTPException, socket.error) as err:
487 self.trouble(u'ERROR: unable to download video data: %s' % str(err))
489 except (ContentTooShortError, ) as err:
490 self.trouble(u'ERROR: content too short (expected %s bytes and served %s)' % (err.expected, err.downloaded))
495 self.post_process(filename, info_dict)
496 except (PostProcessingError) as err:
497 self.trouble(u'ERROR: postprocessing: %s' % str(err))
500 def download(self, url_list):
501 """Download a given list of URLs."""
502 if len(url_list) > 1 and self.fixed_template():
503 raise SameFileError(self.params['outtmpl'])
506 suitable_found = False
508 # Go to next InfoExtractor if not suitable
509 if not ie.suitable(url):
512 # Warn if the _WORKING attribute is False
514 self.report_warning(u'the program functionality for this site has been marked as broken, '
515 u'and will probably not work. If you want to go on, use the -i option.')
517 # Suitable InfoExtractor found
518 suitable_found = True
520 # Extract information from URL and process it
522 videos = ie.extract(url)
523 except ExtractorError as de: # An error we somewhat expected
524 self.trouble(u'ERROR: ' + compat_str(de), de.format_traceback())
526 except Exception as e:
527 if self.params.get('ignoreerrors', False):
528 self.trouble(u'ERROR: ' + compat_str(e), tb=compat_str(traceback.format_exc()))
533 if len(videos or []) > 1 and self.fixed_template():
534 raise SameFileError(self.params['outtmpl'])
536 for video in videos or []:
537 video['extractor'] = ie.IE_NAME
539 self.increment_downloads()
540 self.process_info(video)
541 except UnavailableVideoError:
542 self.trouble(u'\nERROR: unable to download video')
544 # Suitable InfoExtractor had been found; go to next URL
547 if not suitable_found:
548 self.trouble(u'ERROR: no suitable InfoExtractor: %s' % url)
550 return self._download_retcode
552 def post_process(self, filename, ie_info):
553 """Run all the postprocessors on the given file."""
555 info['filepath'] = filename
559 keep_video_wish,new_info = pp.run(info)
560 if keep_video_wish is not None:
562 keep_video = keep_video_wish
563 elif keep_video is None:
564 # No clear decision yet, let IE decide
565 keep_video = keep_video_wish
566 except PostProcessingError as e:
567 self.to_stderr(u'ERROR: ' + e.msg)
568 if keep_video is False and not self.params.get('keepvideo', False):
570 self.to_screen(u'Deleting original file %s (pass -k to keep)' % filename)
571 os.remove(encodeFilename(filename))
572 except (IOError, OSError):
573 self.report_warning(u'Unable to remove downloaded video file')
575 def _download_with_rtmpdump(self, filename, url, player_url, page_url):
576 self.report_destination(filename)
577 tmpfilename = self.temp_name(filename)
579 # Check for rtmpdump first
581 subprocess.call(['rtmpdump', '-h'], stdout=(open(os.path.devnull, 'w')), stderr=subprocess.STDOUT)
582 except (OSError, IOError):
583 self.trouble(u'ERROR: RTMP download detected but "rtmpdump" could not be run')
586 # Download using rtmpdump. rtmpdump returns exit code 2 when
587 # the connection was interrumpted and resuming appears to be
588 # possible. This is part of rtmpdump's normal usage, AFAIK.
589 basic_args = ['rtmpdump', '-q', '-r', url, '-o', tmpfilename]
590 if player_url is not None:
591 basic_args += ['-W', player_url]
592 if page_url is not None:
593 basic_args += ['--pageUrl', page_url]
594 args = basic_args + [[], ['-e', '-k', '1']][self.params.get('continuedl', False)]
595 if self.params.get('verbose', False):
598 shell_quote = lambda args: ' '.join(map(pipes.quote, args))
601 self.to_screen(u'[debug] rtmpdump command line: ' + shell_quote(args))
602 retval = subprocess.call(args)
603 while retval == 2 or retval == 1:
604 prevsize = os.path.getsize(encodeFilename(tmpfilename))
605 self.to_screen(u'\r[rtmpdump] %s bytes' % prevsize, skip_eol=True)
606 time.sleep(5.0) # This seems to be needed
607 retval = subprocess.call(basic_args + ['-e'] + [[], ['-k', '1']][retval == 1])
608 cursize = os.path.getsize(encodeFilename(tmpfilename))
609 if prevsize == cursize and retval == 1:
611 # Some rtmp streams seem abort after ~ 99.8%. Don't complain for those
612 if prevsize == cursize and retval == 2 and cursize > 1024:
613 self.to_screen(u'\r[rtmpdump] Could not download the whole video. This can happen for some advertisements.')
617 fsize = os.path.getsize(encodeFilename(tmpfilename))
618 self.to_screen(u'\r[rtmpdump] %s bytes' % fsize)
619 self.try_rename(tmpfilename, filename)
620 self._hook_progress({
621 'downloaded_bytes': fsize,
622 'total_bytes': fsize,
623 'filename': filename,
624 'status': 'finished',
628 self.trouble(u'\nERROR: rtmpdump exited with code %d' % retval)
631 def _do_download(self, filename, info_dict):
632 url = info_dict['url']
634 # Check file already present
635 if self.params.get('continuedl', False) and os.path.isfile(encodeFilename(filename)) and not self.params.get('nopart', False):
636 self.report_file_already_downloaded(filename)
637 self._hook_progress({
638 'filename': filename,
639 'status': 'finished',
643 # Attempt to download using rtmpdump
644 if url.startswith('rtmp'):
645 return self._download_with_rtmpdump(filename, url,
646 info_dict.get('player_url', None),
647 info_dict.get('page_url', None))
649 tmpfilename = self.temp_name(filename)
652 # Do not include the Accept-Encoding header
653 headers = {'Youtubedl-no-compression': 'True'}
654 if 'user_agent' in info_dict:
655 headers['Youtubedl-user-agent'] = info_dict['user_agent']
656 basic_request = compat_urllib_request.Request(url, None, headers)
657 request = compat_urllib_request.Request(url, None, headers)
659 if self.params.get('test', False):
660 request.add_header('Range','bytes=0-10240')
662 # Establish possible resume length
663 if os.path.isfile(encodeFilename(tmpfilename)):
664 resume_len = os.path.getsize(encodeFilename(tmpfilename))
670 if self.params.get('continuedl', False):
671 self.report_resuming_byte(resume_len)
672 request.add_header('Range','bytes=%d-' % resume_len)
678 retries = self.params.get('retries', 0)
679 while count <= retries:
680 # Establish connection
682 if count == 0 and 'urlhandle' in info_dict:
683 data = info_dict['urlhandle']
684 data = compat_urllib_request.urlopen(request)
686 except (compat_urllib_error.HTTPError, ) as err:
687 if (err.code < 500 or err.code >= 600) and err.code != 416:
688 # Unexpected HTTP error
690 elif err.code == 416:
691 # Unable to resume (requested range not satisfiable)
693 # Open the connection again without the range header
694 data = compat_urllib_request.urlopen(basic_request)
695 content_length = data.info()['Content-Length']
696 except (compat_urllib_error.HTTPError, ) as err:
697 if err.code < 500 or err.code >= 600:
700 # Examine the reported length
701 if (content_length is not None and
702 (resume_len - 100 < int(content_length) < resume_len + 100)):
703 # The file had already been fully downloaded.
704 # Explanation to the above condition: in issue #175 it was revealed that
705 # YouTube sometimes adds or removes a few bytes from the end of the file,
706 # changing the file size slightly and causing problems for some users. So
707 # I decided to implement a suggested change and consider the file
708 # completely downloaded if the file size differs less than 100 bytes from
709 # the one in the hard drive.
710 self.report_file_already_downloaded(filename)
711 self.try_rename(tmpfilename, filename)
712 self._hook_progress({
713 'filename': filename,
714 'status': 'finished',
718 # The length does not match, we start the download over
719 self.report_unable_to_resume()
725 self.report_retry(count, retries)
728 self.trouble(u'ERROR: giving up after %s retries' % retries)
731 data_len = data.info().get('Content-length', None)
732 if data_len is not None:
733 data_len = int(data_len) + resume_len
734 min_data_len = self.params.get("min_filesize", None)
735 max_data_len = self.params.get("max_filesize", None)
736 if min_data_len is not None and data_len < min_data_len:
737 self.to_screen(u'\r[download] File is smaller than min-filesize (%s bytes < %s bytes). Aborting.' % (data_len, min_data_len))
739 if max_data_len is not None and data_len > max_data_len:
740 self.to_screen(u'\r[download] File is larger than max-filesize (%s bytes > %s bytes). Aborting.' % (data_len, max_data_len))
743 data_len_str = self.format_bytes(data_len)
744 byte_counter = 0 + resume_len
745 block_size = self.params.get('buffersize', 1024)
750 data_block = data.read(block_size)
752 if len(data_block) == 0:
754 byte_counter += len(data_block)
756 # Open file just in time
759 (stream, tmpfilename) = sanitize_open(tmpfilename, open_mode)
760 assert stream is not None
761 filename = self.undo_temp_name(tmpfilename)
762 self.report_destination(filename)
763 except (OSError, IOError) as err:
764 self.trouble(u'ERROR: unable to open for writing: %s' % str(err))
767 stream.write(data_block)
768 except (IOError, OSError) as err:
769 self.trouble(u'\nERROR: unable to write data: %s' % str(err))
771 if not self.params.get('noresizebuffer', False):
772 block_size = self.best_block_size(after - before, len(data_block))
775 speed_str = self.calc_speed(start, time.time(), byte_counter - resume_len)
777 self.report_progress('Unknown %', data_len_str, speed_str, 'Unknown ETA')
779 percent_str = self.calc_percent(byte_counter, data_len)
780 eta_str = self.calc_eta(start, time.time(), data_len - resume_len, byte_counter - resume_len)
781 self.report_progress(percent_str, data_len_str, speed_str, eta_str)
783 self._hook_progress({
784 'downloaded_bytes': byte_counter,
785 'total_bytes': data_len,
786 'tmpfilename': tmpfilename,
787 'filename': filename,
788 'status': 'downloading',
792 self.slow_down(start, byte_counter - resume_len)
795 self.trouble(u'\nERROR: Did not get any data blocks')
799 if data_len is not None and byte_counter != data_len:
800 raise ContentTooShortError(byte_counter, int(data_len))
801 self.try_rename(tmpfilename, filename)
803 # Update file modification time
804 if self.params.get('updatetime', True):
805 info_dict['filetime'] = self.try_utime(filename, data.info().get('last-modified', None))
807 self._hook_progress({
808 'downloaded_bytes': byte_counter,
809 'total_bytes': byte_counter,
810 'filename': filename,
811 'status': 'finished',
816 def _hook_progress(self, status):
817 for ph in self._progress_hooks:
820 def add_progress_hook(self, ph):
821 """ ph gets called on download progress, with a dictionary with the entries
822 * filename: The final filename
823 * status: One of "downloading" and "finished"
825 It can also have some of the following entries:
827 * downloaded_bytes: Bytes on disks
828 * total_bytes: Total bytes, None if unknown
829 * tmpfilename: The filename we're currently writing to
831 Hooks are guaranteed to be called at least once (with status "finished")
832 if the download is successful.
834 self._progress_hooks.append(ph)