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Raphaƫl G. Git Repositories - youtubedl/blob - youtube_dl/postprocessor/common.py
1 from __future__
import unicode_literals
7 cli_configuration_args
,
12 class PostProcessor(object):
13 """Post Processor class.
15 PostProcessor objects can be added to downloaders with their
16 add_post_processor() method. When the downloader has finished a
17 successful download, it will take its internal chain of PostProcessors
18 and start calling the run() method on each one of them, first with
19 an initial argument and then with the returned value of the previous
22 The chain will be stopped if one of them ever returns None or the end
23 of the chain is reached.
25 PostProcessor objects follow a "mutual registration" process similar
26 to InfoExtractor objects.
28 Optionally PostProcessor can use a list of additional command-line arguments
29 with self._configuration_args.
34 def __init__(self
, downloader
=None):
35 self
._downloader
= downloader
37 def set_downloader(self
, downloader
):
38 """Sets the downloader for this PP."""
39 self
._downloader
= downloader
41 def run(self
, information
):
42 """Run the PostProcessor.
44 The "information" argument is a dictionary like the ones
45 composed by InfoExtractors. The only difference is that this
46 one has an extra field called "filepath" that points to the
49 This method returns a tuple, the first element is a list of the files
50 that can be deleted, and the second of which is the updated
53 In addition, this method may raise a PostProcessingError
54 exception if post processing fails.
56 return [], information
# by default, keep file and do nothing
58 def try_utime(self
, path
, atime
, mtime
, errnote
='Cannot update utime of file'):
60 os
.utime(encodeFilename(path
), (atime
, mtime
))
62 self
._downloader
.report_warning(errnote
)
64 def _configuration_args(self
, default
=[]):
65 return cli_configuration_args(self
._downloader
.params
, 'postprocessor_args', default
)
68 class AudioConversionError(PostProcessingError
):