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I am wanting to write a script that periodically polls a folder for files of a specific extension. When it finds one (or several), it executes a command on that file, waits for it to complete, checks for an output file, and renames the original based on whether or not the output exists. It then loops back and repeats the process. I don't want to get into a massive loop, so it would need to pause for 15 minutes before checking again if there is nothing to process. You wouldn't think this would be too difficult, but I'm having issues. The whole thing is giving me a headache. If I look real pitiful, can someone point me in the right direction?
D.

Good place to start:
Crazy Scripting : FolderSpy v0.96

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My problem stems from the fact that the output that I am looking for has the same file name, but a different extension, from the original file in %A_LoopFileName%. I know I can pull just the extension from %A_LoopFileName%, but how do I pull just the file name, add a new extension, and check if that file exists? If It exists, I want to rename the original as *.done. If the output doesn't exist, I want to rename it as *.err.
D.

Try to post some psuedo code ..

OK. Suppose %A_LoopFileName% contained "image.flame". This is what I want to do


If the RunWait is successful, it produces a JPG image. It's rendering a fractal. On success, I want to rename the parameters so they won't be picked up next loop through. If the program completed and no JPG was produced, I want to rename that as well so I can check on why it failed. If someone does a ctrl-c in the process, I just want the program to abort.
D.

The following is not working code .. You have to find and solve the missing pieces.

SplitPath was the piece I was missing! And don't be confused. There would be a DoneFile and an ErrFile. If the JPG exists, we go the DoneFile route. If not, we rename it with a .ERR extension. Thanks for all your help. I was guessing that there was a command to do this, but when you don't know what it is called, sometimes it is hard to find.
D.

True.
BTW, You can also achieve the same result with RegExMatch()