Moved from os.system to subprocess.call

youtube_dl/postprocessor/execafterdownload.py

@@ -1,36 +1,39 @@
-# ExecAfterDownload written by AaronM / mcd1992.
-# If there are any issues with this postprocessor please contact me via github or admin@fgthou.se
-
-import os, re, shlex
+from __future__ import unicode_literals
+from .common import PostProcessor
 from ..utils import PostProcessingError
+import subprocess
+import shlex
 
-class ExecAfterDownload( object ):
-    _downloader = None
 
-    def __init__( self, downloader = None, commandString = None ):
-        self._downloader = downloader
+class ExecAfterDownloadPP(PostProcessor):
+    def __init__(self, downloader=None, verboseOutput=None, commandString=None):
+        self.verboseOutput = verboseOutput
         self.commandString = commandString
 
-    def set_downloader( self, downloader ):
-        """Sets the downloader for this PP."""
-        self._downloader = downloader
+    def run(self, information):
+        self.targetFile = information['filepath'].replace('\'', '\'\\\'\'')  # Replace single quotes with '\''
+        self.commandList = shlex.split(self.commandString)
+        self.commandString = ''
 
-    def run( self, information ):
-        self.targetFile = information["filepath"]
-        self.finalCommand = None;
+        # Replace all instances of '{}' with the file name and convert argument list to single string.
+        for index, arg in enumerate(self.commandList):
+            if(arg == '{}'):
+                self.commandString += '\'' + self.targetFile + '\' '
+            else:
+                self.commandString += arg + ' '
 
-        if( re.search( '{}', self.commandString ) ): # Find and replace all occurrences of {} with the file name.
-            self.finalCommand = re.sub( "{}", '\'' + self.targetFile + '\'', self.commandString )
-        else:
-            self.finalCommand = self.commandString + ' \'' + self.targetFile + '\''
+        if self.targetFile not in self.commandString:  # Assume user wants the file appended to the end of the command if no {}'s were given.
+            self.commandString += '\'' + self.targetFile + '\''
 
-        if( self.finalCommand ):
-            print( "[exec] Executing command: " + self.finalCommand )
-            os.system( self.finalCommand )
-        else:
-            raise PostProcessingExecError( "Invalid syntax for --exec post processor" )
+        print("[exec] Executing command: " + self.commandString)
+        self.retCode = subprocess.call(self.commandString, shell=True)
+        if(self.retCode < 0):
+            print("[exec] WARNING: Command exited with a negative return code, the process was killed externally. Your command may not of completed succesfully!")
+        elif(self.verboseOutput):
+            print("[exec] Command exited with return code: " + str(self.retCode))
 
         return None, information  # by default, keep file and do nothing
 
-class PostProcessingExecError( PostProcessingError ):
+
+class PostProcessingExecError(PostProcessingError):
     pass