yt_dlp/postprocessor/execafterdownload.py

   1 from __future__ import unicode_literals
   2
   3 import subprocess
   4
   5 from .common import PostProcessor
   6 from ..compat import compat_shlex_quote
   7 from ..utils import (
   8     encodeArgument,
   9     PostProcessingError,
  10     variadic,
  11 )
  12
  13
  14 class ExecAfterDownloadPP(PostProcessor):
  15
  16     def __init__(self, downloader, exec_cmd):
  17         super(ExecAfterDownloadPP, self).__init__(downloader)
  18         self.exec_cmd = variadic(exec_cmd)
  19
  20     @classmethod
  21     def pp_key(cls):
  22         return 'Exec'
  23
  24     def parse_cmd(self, cmd, info):
  25         tmpl, tmpl_dict = self._downloader.prepare_outtmpl(cmd, info)
  26         if tmpl_dict:  # if there are no replacements, tmpl_dict = {}
  27             return self._downloader.escape_outtmpl(tmpl) % tmpl_dict
  28
  29         # If no replacements are found, replace {} for backard compatibility
  30         if '{}' not in cmd:
  31             cmd += ' {}'
  32         return cmd.replace('{}', compat_shlex_quote(
  33             info.get('filepath') or info['_filename']))
  34
  35     def run(self, info):
  36         for tmpl in self.exec_cmd:
  37             cmd = self.parse_cmd(tmpl, info)
  38             self.to_screen('Executing command: %s' % cmd)
  39             retCode = subprocess.call(encodeArgument(cmd), shell=True)
  40             if retCode != 0:
  41                 raise PostProcessingError('Command returned error code %d' % retCode)
  42         return [], info