yt_dlp/postprocessor/exec.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 ExecPP(PostProcessor):
  15
  16     def __init__(self, downloader, exec_cmd):
  17         PostProcessor.__init__(self, downloader)
  18         self.exec_cmd = variadic(exec_cmd)
  19
  20     def parse_cmd(self, cmd, info):
  21         tmpl, tmpl_dict = self._downloader.prepare_outtmpl(cmd, info)
  22         if tmpl_dict:  # if there are no replacements, tmpl_dict = {}
  23             return self._downloader.escape_outtmpl(tmpl) % tmpl_dict
  24
  25         filepath = info.get('filepath', info.get('_filename'))
  26         # If video, and no replacements are found, replace {} for backard compatibility
  27         if filepath:
  28             if '{}' not in cmd:
  29                 cmd += ' {}'
  30             cmd = cmd.replace('{}', compat_shlex_quote(filepath))
  31         return cmd
  32
  33     def run(self, info):
  34         for tmpl in self.exec_cmd:
  35             cmd = self.parse_cmd(tmpl, info)
  36             self.to_screen('Executing command: %s' % cmd)
  37             retCode = subprocess.call(encodeArgument(cmd), shell=True)
  38             if retCode != 0:
  39                 raise PostProcessingError('Command returned error code %d' % retCode)
  40         return [], info
  41
  42
  43 # Deprecated
  44 class ExecAfterDownloadPP(ExecPP):
  45     def __init__(self, *args, **kwargs):
  46         super().__init__(*args, **kwargs)
  47         self.deprecation_warning(
  48             'yt_dlp.postprocessor.ExecAfterDownloadPP is deprecated '
  49             'and may be removed in a future version. Use yt_dlp.postprocessor.ExecPP instead')