How to detect type of stdout/stdin

StackOverflow https://stackoverflow.com/questions/21968131

  •  15-10-2022
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Question

I am not sure if it is valid question. Is it possible to detect type of stdout or stdin of python script? I wanted to check if stdin/ stdout is a folder/ derectory or data or binary types.

Basically I am trying to extract files from archive using python script. However, instead of extracting, the script I use write in to stdout. I just want to manipulate this stdout to find directory then create in the destination then find data/file/bin and extract from archive to destination directory.

Is it possible to do that?

Updtate

Here is what the scripts lists from iso container where /BOOT/GRUB2_EF is a directory.

C:\Users\Sundar\Documents\multibootusb>iso9660.py i:\home\sundar\openSUSE-13.1-K
DE-Live-x86_64.iso
/
/BOOT
/BOOT/0XA89369.
/BOOT/BOOTPART.CFG
/BOOT/GRUB2_EF
/BOOT/GRUB2_EF/GRUB.CFG

I tryid to create directory using this command:-

C:\Users\Sundar\Documents\multibootusb>iso9660.py i:\home\sundar\openSUSE-13.1-K
DE-Live-x86_64.iso /BOOT/GRUB2_EF/THEMES > dir

However, this is what i got and it is not a directory...

C:\Users\Sundar\Documents\multibootusb>dir
.
.
23/02/2014  11:52 AM             5,000 detect_iso.py
23/02/2014  11:53 AM             3,152 detect_iso.pyc
23/02/2014  06:07 PM             2,048 dir
16/02/2014  07:30 PM    <DIR>          dist
08/12/2013  06:31 AM               230 install_distro.py

Update2 

C:\Users\Sundar\Documents\multibootusb>iso9660.py i:\home\sundar\openSUSE-13.1-K
    DE-Live-x86_64.iso /ISOLINUX.CFG > file.cfg

Here is the content of file.cfg

default openSUSE_13.1_KDE_Live
implicit 1
display isolinux.msg
.
.
Was it helpful?

Solution

It looks like this is the tool you are using?

https://github.com/barneygale/iso9660/blob/master/iso9660.py

This tool does one of two things:

  1. Print a list of files in the ISO.
  2. Extract one file from the ISO.

That's it. If you want it to extract all files that you are seeing, you will need to invoke it once for every file. I don't know much about cmd.exe scripting, but you might be able to take the output of iso9660.py where it prints every file and pipe it into a for loop that runs iso9660.py again once for every file.

Per a note from the OP, the only way to skip directories in the output is to skip lines that don't have a "." in them.

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