from __future__ import unicode_literals import re import subprocess from .common import PostProcessor from ..compat import compat_shlex_quote from ..utils import ( encodeArgument, FORMAT_RE, PostProcessingError, ) class ExecAfterDownloadPP(PostProcessor): def __init__(self, downloader, exec_cmd): super(ExecAfterDownloadPP, self).__init__(downloader) self.exec_cmd = exec_cmd @classmethod def pp_key(cls): return 'Exec' def parse_cmd(self, cmd, info): # If no %(key)s is found, replace {} for backard compatibility if not re.search(FORMAT_RE.format(r'[-\w>.+]+'), cmd): if '{}' not in cmd: cmd += ' {}' return cmd.replace('{}', compat_shlex_quote(info['filepath'])) tmpl, info_copy = self._downloader.prepare_outtmpl(cmd, info) return tmpl % info_copy def run(self, info): cmd = self.parse_cmd(self.exec_cmd, info) self.to_screen('Executing command: %s' % cmd) retCode = subprocess.call(encodeArgument(cmd), shell=True) if retCode != 0: raise PostProcessingError('Command returned error code %d' % retCode) return [], info