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Do not overwrite partly-downloaded files unless --no-continue is specified.

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If a partly-downloaded file is found, only overwrite it if the --no-continue
option has been specified explicitly.  Otherwise, fail with an error
message.
This commit is contained in:
Michael Haggerty 2011-05-20 09:31:47 +02:00
parent 0dd2aea0c7
commit db90a6bc3e
1 changed files with 17 additions and 1 deletions
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18
youtube-dl
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@ -509,6 +509,16 @@ class FileDownloader(object):
except (UnicodeEncodeError), err:
self.to_screen(u'[download] The file has already been downloaded')
def report_file_partly_downloaded(self, file_name):
"""Report file has already been partly downloaded."""
msg = (u'ERROR: %s has already been partly downloaded; '
u'please select either --continue or --no-continue')
try:
self.to_screen(msg % file_name)
except (UnicodeEncodeError), err:
self.to_screen(msg % u'The file')
def report_unable_to_resume(self):
"""Report it was impossible to resume download."""
self.to_screen(u'[download] Unable to resume')
@ -683,6 +693,9 @@ class FileDownloader(object):
self.report_resuming_byte(resume_len)
request.add_header('Range','bytes=%d-' % resume_len)
open_mode = 'ab'
elif self.params.get('continuedl') is None:
self.report_file_partly_downloaded(filename)
return False
else:
resume_len = 0
@ -2808,7 +2821,10 @@ if __name__ == '__main__':
filesystem.add_option('-w', '--no-overwrites',
action='store_true', dest='nooverwrites', help='do not overwrite files', default=False)
filesystem.add_option('-c', '--continue',
action='store_true', dest='continue_dl', help='resume partially downloaded files', default=False)
action='store_true', dest='continue_dl', help='resume partially downloaded files', default=None)
filesystem.add_option('--no-continue',
action='store_false', dest='continue_dl',
help='do not resume partially downloaded files (restart from beginning)')
filesystem.add_option('--cookies',
dest='cookiefile', metavar='FILE', help='file to dump cookie jar to')
filesystem.add_option('--no-part',