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Add .trouble() method to downloader to ease tracing retcode

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Ricardo Garcia 2008-07-22 11:33:41 +02:00 committed by Ricardo Garcia
parent bb681b88df
commit 0086d1ec32
1 changed files with 26 additions and 13 deletions
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39
youtube-dl
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@ -60,6 +60,7 @@ class FileDownloader(object):
simulate: Do not download the video files. simulate: Do not download the video files.
format: Video format code. format: Video format code.
outtmpl: Template for output names. outtmpl: Template for output names.
ignoreerrors: Do not stop on download errors.
""" """
_params = None _params = None
@ -159,6 +160,21 @@ class FileDownloader(object):
"""Checks if the output template is fixed.""" """Checks if the output template is fixed."""
return (re.search(ur'(?u)%\(.+?\)s', self._params['outtmpl']) is None) return (re.search(ur'(?u)%\(.+?\)s', self._params['outtmpl']) is None)
def trouble(self, message=None):
"""Determine action to take when a download problem appears.
Depending on if the downloader has been configured to ignore
download errors or not, this method may exit the program or
not when errors are found, after printing the message. If it
doesn't exit, it returns an error code suitable to be returned
later as a program exit code to indicate error.
"""
if message is not None:
self.to_stderr(message)
if not self._params.get('ignoreerrors', False):
sys.exit(1)
return 1
def download(self, url_list): def download(self, url_list):
"""Download a given list of URLs.""" """Download a given list of URLs."""
retcode = 0 retcode = 0
@ -175,7 +191,7 @@ class FileDownloader(object):
all_results = ie.extract(url) all_results = ie.extract(url)
results = [x for x in all_results if x is not None] results = [x for x in all_results if x is not None]
if len(results) != len(all_results): if len(results) != len(all_results):
retcode = 1 retcode = self.trouble()
if len(results) > 1 and self.fixed_template(): if len(results) > 1 and self.fixed_template():
sys.exit('ERROR: fixed output name but more than one file to download') sys.exit('ERROR: fixed output name but more than one file to download')
@ -195,36 +211,30 @@ class FileDownloader(object):
try: try:
filename = self._params['outtmpl'] % result filename = self._params['outtmpl'] % result
except (ValueError, KeyError), err: except (ValueError, KeyError), err:
self.to_stderr('ERROR: invalid output template: %s' % str(err)) retcode = self.trouble('ERROR: invalid output template: %s' % str(err))
retcode = 1
continue continue
try: try:
self.pmkdir(filename) self.pmkdir(filename)
except (OSError, IOError), err: except (OSError, IOError), err:
self.to_stderr('ERROR: unable to create directories: %s' % str(err)) retcode = self.trouble('ERROR: unable to create directories: %s' % str(err))
retcode = 1
continue continue
try: try:
outstream = open(filename, 'wb') outstream = open(filename, 'wb')
except (OSError, IOError), err: except (OSError, IOError), err:
self.to_stderr('ERROR: unable to open for writing: %s' % str(err)) retcode = self.trouble('ERROR: unable to open for writing: %s' % str(err))
retcode = 1
continue continue
try: try:
self._do_download(outstream, result['url']) self._do_download(outstream, result['url'])
outstream.close() outstream.close()
except (OSError, IOError), err: except (OSError, IOError), err:
self.to_stderr('ERROR: unable to write video data: %s' % str(err)) retcode = self.trouble('ERROR: unable to write video data: %s' % str(err))
retcode = 1
continue continue
except (urllib2.URLError, httplib.HTTPException, socket.error), err: except (urllib2.URLError, httplib.HTTPException, socket.error), err:
self.to_stderr('ERROR: unable to download video data: %s' % str(err)) retcode = self.trouble('ERROR: unable to download video data: %s' % str(err))
retcode = 1
continue continue
break break
if not suitable_found: if not suitable_found:
self.to_stderr('ERROR: no suitable InfoExtractor: %s' % url) retcode = self.trouble('ERROR: no suitable InfoExtractor: %s' % url)
retcode = 1
return retcode return retcode
@ -503,6 +513,8 @@ if __name__ == '__main__':
dest='format', metavar='FMT', help='video format code') dest='format', metavar='FMT', help='video format code')
parser.add_option('-b', '--best-quality', parser.add_option('-b', '--best-quality',
action='store_const', dest='video_format', help='alias for -f 18', const='18') action='store_const', dest='video_format', help='alias for -f 18', const='18')
parser.add_option('-i', '--ignore-errors',
action='store_true', dest='ignoreerrors', help='continue on download errors', default=False)
(opts, args) = parser.parse_args() (opts, args) = parser.parse_args()
# Conflicting, missing and erroneous options # Conflicting, missing and erroneous options
@ -536,6 +548,7 @@ if __name__ == '__main__':
or (opts.usetitle and '%(stitle)s-%(id)s.%(ext)s') or (opts.usetitle and '%(stitle)s-%(id)s.%(ext)s')
or (opts.useliteral and '%(title)s-%(id)s.%(ext)s') or (opts.useliteral and '%(title)s-%(id)s.%(ext)s')
or '%(id)s.%(ext)s'), or '%(id)s.%(ext)s'),
'ignoreerrors': opts.ignoreerrors,
}) })
fd.add_info_extractor(youtube_ie) fd.add_info_extractor(youtube_ie)
retcode = fd.download(args) retcode = fd.download(args)