X-Git-Url: https://git.rapsys.eu/youtubedl/blobdiff_plain/e8cd8c4bd832446f1971215b9fedc4531555dc1a..c8c68895a8818fe160e81ce9c6f8baea38fe3051:/youtube_dl/downloader/common.py diff --git a/youtube_dl/downloader/common.py b/youtube_dl/downloader/common.py index 10143d5..1cdba89 100644 --- a/youtube_dl/downloader/common.py +++ b/youtube_dl/downloader/common.py @@ -1,12 +1,19 @@ +from __future__ import division, unicode_literals + import os import re import sys import time +import random +from ..compat import compat_os_name from ..utils import ( + decodeArgument, encodeFilename, - timeconvert, + error_to_compat_str, format_bytes, + shell_quote, + timeconvert, ) @@ -22,25 +29,33 @@ class FileDownloader(object): Available options: - verbose: Print additional info to stdout. - quiet: Do not print messages to stdout. - ratelimit: Download speed limit, in bytes/sec. - retries: Number of times to retry for HTTP error 5xx - buffersize: Size of download buffer in bytes. - noresizebuffer: Do not automatically resize the download buffer. - continuedl: Try to continue downloads if possible. - noprogress: Do not print the progress bar. - logtostderr: Log messages to stderr instead of stdout. - consoletitle: Display progress in console window's titlebar. - nopart: Do not use temporary .part files. - updatetime: Use the Last-modified header to set output file timestamps. - test: Download only first bytes to test the downloader. - min_filesize: Skip files smaller than this size - max_filesize: Skip files larger than this size + verbose: Print additional info to stdout. + quiet: Do not print messages to stdout. + ratelimit: Download speed limit, in bytes/sec. + retries: Number of times to retry for HTTP error 5xx + buffersize: Size of download buffer in bytes. + noresizebuffer: Do not automatically resize the download buffer. + continuedl: Try to continue downloads if possible. + noprogress: Do not print the progress bar. + logtostderr: Log messages to stderr instead of stdout. + consoletitle: Display progress in console window's titlebar. + nopart: Do not use temporary .part files. + updatetime: Use the Last-modified header to set output file timestamps. + test: Download only first bytes to test the downloader. + min_filesize: Skip files smaller than this size + max_filesize: Skip files larger than this size + xattr_set_filesize: Set ytdl.filesize user xattribute with expected size. + external_downloader_args: A list of additional command-line arguments for the + external downloader. + hls_use_mpegts: Use the mpegts container for HLS videos. + http_chunk_size: Size of a chunk for chunk-based HTTP downloading. May be + useful for bypassing bandwidth throttling imposed by + a webserver (experimental) Subclasses of this one must re-define the real_download method. """ + _TEST_FILE_SIZE = 10241 params = None def __init__(self, ydl, params): @@ -48,6 +63,7 @@ class FileDownloader(object): self.ydl = ydl self._progress_hooks = [] self.params = params + self.add_progress_hook(self.report_progress) @staticmethod def format_seconds(seconds): @@ -76,8 +92,10 @@ class FileDownloader(object): def calc_eta(start, now, total, current): if total is None: return None + if now is None: + now = time.time() dif = now - start - if current == 0 or dif < 0.001: # One millisecond + if current == 0 or dif < 0.001: # One millisecond return None rate = float(current) / dif return int((float(total) - float(current)) / rate) @@ -91,7 +109,7 @@ class FileDownloader(object): @staticmethod def calc_speed(start, now, bytes): dif = now - start - if bytes == 0 or dif < 0.001: # One millisecond + if bytes == 0 or dif < 0.001: # One millisecond return None return float(bytes) / dif @@ -101,10 +119,14 @@ class FileDownloader(object): return '%10s' % '---b/s' return '%10s' % ('%s/s' % format_bytes(speed)) + @staticmethod + def format_retries(retries): + return 'inf' if retries == float('inf') else '%.0f' % retries + @staticmethod def best_block_size(elapsed_time, bytes): new_min = max(bytes / 2.0, 1.0) - new_max = min(max(bytes * 2.0, 1.0), 4194304) # Do not surpass 4 MB + new_max = min(max(bytes * 2.0, 1.0), 4194304) # Do not surpass 4 MB if elapsed_time < 0.001: return int(new_max) rate = bytes / elapsed_time @@ -142,38 +164,44 @@ class FileDownloader(object): def report_error(self, *args, **kargs): self.ydl.report_error(*args, **kargs) - def slow_down(self, start_time, byte_counter): + def slow_down(self, start_time, now, byte_counter): """Sleep if the download speed is over the rate limit.""" - rate_limit = self.params.get('ratelimit', None) + rate_limit = self.params.get('ratelimit') if rate_limit is None or byte_counter == 0: return - now = time.time() + if now is None: + now = time.time() elapsed = now - start_time if elapsed <= 0.0: return speed = float(byte_counter) / elapsed if speed > rate_limit: - time.sleep((byte_counter - rate_limit * (now - start_time)) / rate_limit) + sleep_time = float(byte_counter) / rate_limit - elapsed + if sleep_time > 0: + time.sleep(sleep_time) def temp_name(self, filename): """Returns a temporary filename for the given filename.""" - if self.params.get('nopart', False) or filename == u'-' or \ + if self.params.get('nopart', False) or filename == '-' or \ (os.path.exists(encodeFilename(filename)) and not os.path.isfile(encodeFilename(filename))): return filename - return filename + u'.part' + return filename + '.part' def undo_temp_name(self, filename): - if filename.endswith(u'.part'): - return filename[:-len(u'.part')] + if filename.endswith('.part'): + return filename[:-len('.part')] return filename + def ytdl_filename(self, filename): + return filename + '.ytdl' + def try_rename(self, old_filename, new_filename): try: if old_filename == new_filename: return os.rename(encodeFilename(old_filename), encodeFilename(new_filename)) except (IOError, OSError) as err: - self.report_error(u'unable to rename file: %s' % str(err)) + self.report_error('unable to rename file: %s' % error_to_compat_str(err)) def try_utime(self, filename, last_modified_hdr): """Try to set the last-modified time of the given file.""" @@ -192,126 +220,172 @@ class FileDownloader(object): return try: os.utime(filename, (time.time(), filetime)) - except: + except Exception: pass return filetime def report_destination(self, filename): """Report destination filename.""" - self.to_screen(u'[download] Destination: ' + filename) + self.to_screen('[download] Destination: ' + filename) def _report_progress_status(self, msg, is_last_line=False): - fullmsg = u'[download] ' + msg + fullmsg = '[download] ' + msg if self.params.get('progress_with_newline', False): self.to_screen(fullmsg) else: - if os.name == 'nt': + if compat_os_name == 'nt': prev_len = getattr(self, '_report_progress_prev_line_length', 0) if prev_len > len(fullmsg): - fullmsg += u' ' * (prev_len - len(fullmsg)) + fullmsg += ' ' * (prev_len - len(fullmsg)) self._report_progress_prev_line_length = len(fullmsg) - clear_line = u'\r' + clear_line = '\r' else: - clear_line = (u'\r\x1b[K' if sys.stderr.isatty() else u'\r') + clear_line = ('\r\x1b[K' if sys.stderr.isatty() else '\r') self.to_screen(clear_line + fullmsg, skip_eol=not is_last_line) - self.to_console_title(u'youtube-dl ' + msg) + self.to_console_title('youtube-dl ' + msg) - def report_progress(self, percent, data_len_str, speed, eta): - """Report download progress.""" - if self.params.get('noprogress', False): + def report_progress(self, s): + if s['status'] == 'finished': + if self.params.get('noprogress', False): + self.to_screen('[download] Download completed') + else: + msg_template = '100%%' + if s.get('total_bytes') is not None: + s['_total_bytes_str'] = format_bytes(s['total_bytes']) + msg_template += ' of %(_total_bytes_str)s' + if s.get('elapsed') is not None: + s['_elapsed_str'] = self.format_seconds(s['elapsed']) + msg_template += ' in %(_elapsed_str)s' + self._report_progress_status( + msg_template % s, is_last_line=True) + + if self.params.get('noprogress'): return - if eta is not None: - eta_str = self.format_eta(eta) - else: - eta_str = 'Unknown ETA' - if percent is not None: - percent_str = self.format_percent(percent) + + if s['status'] != 'downloading': + return + + if s.get('eta') is not None: + s['_eta_str'] = self.format_eta(s['eta']) else: - percent_str = 'Unknown %' - speed_str = self.format_speed(speed) + s['_eta_str'] = 'Unknown ETA' - msg = (u'%s of %s at %s ETA %s' % - (percent_str, data_len_str, speed_str, eta_str)) - self._report_progress_status(msg) + if s.get('total_bytes') and s.get('downloaded_bytes') is not None: + s['_percent_str'] = self.format_percent(100 * s['downloaded_bytes'] / s['total_bytes']) + elif s.get('total_bytes_estimate') and s.get('downloaded_bytes') is not None: + s['_percent_str'] = self.format_percent(100 * s['downloaded_bytes'] / s['total_bytes_estimate']) + else: + if s.get('downloaded_bytes') == 0: + s['_percent_str'] = self.format_percent(0) + else: + s['_percent_str'] = 'Unknown %' - def report_progress_live_stream(self, downloaded_data_len, speed, elapsed): - if self.params.get('noprogress', False): - return - downloaded_str = format_bytes(downloaded_data_len) - speed_str = self.format_speed(speed) - elapsed_str = FileDownloader.format_seconds(elapsed) - msg = u'%s at %s (%s)' % (downloaded_str, speed_str, elapsed_str) - self._report_progress_status(msg) - - def report_finish(self, data_len_str, tot_time): - """Report download finished.""" - if self.params.get('noprogress', False): - self.to_screen(u'[download] Download completed') + if s.get('speed') is not None: + s['_speed_str'] = self.format_speed(s['speed']) else: - self._report_progress_status( - (u'100%% of %s in %s' % - (data_len_str, self.format_seconds(tot_time))), - is_last_line=True) + s['_speed_str'] = 'Unknown speed' + + if s.get('total_bytes') is not None: + s['_total_bytes_str'] = format_bytes(s['total_bytes']) + msg_template = '%(_percent_str)s of %(_total_bytes_str)s at %(_speed_str)s ETA %(_eta_str)s' + elif s.get('total_bytes_estimate') is not None: + s['_total_bytes_estimate_str'] = format_bytes(s['total_bytes_estimate']) + msg_template = '%(_percent_str)s of ~%(_total_bytes_estimate_str)s at %(_speed_str)s ETA %(_eta_str)s' + else: + if s.get('downloaded_bytes') is not None: + s['_downloaded_bytes_str'] = format_bytes(s['downloaded_bytes']) + if s.get('elapsed'): + s['_elapsed_str'] = self.format_seconds(s['elapsed']) + msg_template = '%(_downloaded_bytes_str)s at %(_speed_str)s (%(_elapsed_str)s)' + else: + msg_template = '%(_downloaded_bytes_str)s at %(_speed_str)s' + else: + msg_template = '%(_percent_str)s % at %(_speed_str)s ETA %(_eta_str)s' + + self._report_progress_status(msg_template % s) def report_resuming_byte(self, resume_len): """Report attempt to resume at given byte.""" - self.to_screen(u'[download] Resuming download at byte %s' % resume_len) + self.to_screen('[download] Resuming download at byte %s' % resume_len) - def report_retry(self, count, retries): + def report_retry(self, err, count, retries): """Report retry in case of HTTP error 5xx""" - self.to_screen(u'[download] Got server HTTP error. Retrying (attempt %d of %d)...' % (count, retries)) + self.to_screen( + '[download] Got server HTTP error: %s. Retrying (attempt %d of %s)...' + % (error_to_compat_str(err), count, self.format_retries(retries))) def report_file_already_downloaded(self, file_name): """Report file has already been fully downloaded.""" try: - self.to_screen(u'[download] %s has already been downloaded' % file_name) + self.to_screen('[download] %s has already been downloaded' % file_name) except UnicodeEncodeError: - self.to_screen(u'[download] The file has already been downloaded') + self.to_screen('[download] The file has already been downloaded') def report_unable_to_resume(self): """Report it was impossible to resume download.""" - self.to_screen(u'[download] Unable to resume') + self.to_screen('[download] Unable to resume') def download(self, filename, info_dict): """Download to a filename using the info from info_dict Return True on success and False otherwise """ - # Check file already present - if self.params.get('continuedl', False) and os.path.isfile(encodeFilename(filename)) and not self.params.get('nopart', False): - self.report_file_already_downloaded(filename) - self._hook_progress({ - 'filename': filename, - 'status': 'finished', - 'total_bytes': os.path.getsize(encodeFilename(filename)), - }) - return True + + nooverwrites_and_exists = ( + self.params.get('nooverwrites', False) + and os.path.exists(encodeFilename(filename)) + ) + + if not hasattr(filename, 'write'): + continuedl_and_exists = ( + self.params.get('continuedl', True) + and os.path.isfile(encodeFilename(filename)) + and not self.params.get('nopart', False) + ) + + # Check file already present + if filename != '-' and (nooverwrites_and_exists or continuedl_and_exists): + self.report_file_already_downloaded(filename) + self._hook_progress({ + 'filename': filename, + 'status': 'finished', + 'total_bytes': os.path.getsize(encodeFilename(filename)), + }) + return True + + min_sleep_interval = self.params.get('sleep_interval') + if min_sleep_interval: + max_sleep_interval = self.params.get('max_sleep_interval', min_sleep_interval) + sleep_interval = random.uniform(min_sleep_interval, max_sleep_interval) + self.to_screen( + '[download] Sleeping %s seconds...' % ( + int(sleep_interval) if sleep_interval.is_integer() + else '%.2f' % sleep_interval)) + time.sleep(sleep_interval) return self.real_download(filename, info_dict) def real_download(self, filename, info_dict): """Real download process. Redefine in subclasses.""" - raise NotImplementedError(u'This method must be implemented by sublcasses') + raise NotImplementedError('This method must be implemented by subclasses') def _hook_progress(self, status): for ph in self._progress_hooks: ph(status) def add_progress_hook(self, ph): - """ ph gets called on download progress, with a dictionary with the entries - * filename: The final filename - * status: One of "downloading" and "finished" + # See YoutubeDl.py (search for progress_hooks) for a description of + # this interface + self._progress_hooks.append(ph) - It can also have some of the following entries: + def _debug_cmd(self, args, exe=None): + if not self.params.get('verbose', False): + return - * downloaded_bytes: Bytes on disks - * total_bytes: Total bytes, None if unknown - * tmpfilename: The filename we're currently writing to - * eta: The estimated time in seconds, None if unknown - * speed: The download speed in bytes/second, None if unknown + str_args = [decodeArgument(a) for a in args] - Hooks are guaranteed to be called at least once (with status "finished") - if the download is successful. - """ - self._progress_hooks.append(ph) + if exe is None: + exe = os.path.basename(str_args[0]) + self.to_screen('[debug] %s command line: %s' % ( + exe, shell_quote(str_args)))