feature request: command option added

[nikita-sah]

hi,
I have added the command line option (-C) for executing one or two small commands directly without having to create a script file, as requested in feature requests.

[jesparza]

Thanks, @nikita-sah! Let me take a look and I will merge it :) It is a feature I had in mind ;)

[jesparza]

Mmm, I have checked the code and I think it is better if we avoid writing to a temporary file, but just using the memory. Normally, I don't expect long commands to be passed via command line...

Another potential problem would be that one of the commands uses a comma as part of the command, so the split function would now behave as expected. I think more checking is needed or just accept one command and use several -C.

[jesparza]

At the end, I used the append action from Cmd to store the commands in a list when the user uses more than one -C parameter ("peepdf.py -C info -C tree mypdf.pdf"). This is a basic implementation, but a more complete solution is also needed. Closing this PR, thanks for sending it! ;)