yt_dlp/postprocessor/exec.py

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