yt_dlp/postprocessor/exec.py

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