An example of how to have komorebi subscribe and send events to a named pipe in python

komorebi_named_pipe.py

import win32pipe
import win32file
import pywintypes
import subprocess
import json
import time

KOMOREBI_BUFF_SIZE = 64 * 1024
KOMOREBI_PIPE_NAME = "yasb"

if __name__ == "__main__":
    print("Creating named pipe:", KOMOREBI_PIPE_NAME)
    pipe = win32pipe.CreateNamedPipe(
        f"\\\\.\\pipe\\{KOMOREBI_PIPE_NAME}",
        win32pipe.PIPE_ACCESS_DUPLEX,
        win32pipe.PIPE_TYPE_MESSAGE | win32pipe.PIPE_READMODE_MESSAGE | win32pipe.PIPE_WAIT,
        1,
        KOMOREBI_BUFF_SIZE,
        KOMOREBI_BUFF_SIZE,
        0,
        None
    )

    print("Waiting for Komorebi")
    proc = subprocess.Popen(["komorebic.exe", "add-subscriber", KOMOREBI_PIPE_NAME])
    proc.communicate()

    while proc.returncode != 0:
        print(f"Komorebic.exe failed with error code {proc.returncode}. Retrying in 5 seconds...")
        time.sleep(5)
        proc = subprocess.Popen(["komorebic.exe", "add-subscriber", KOMOREBI_PIPE_NAME])
        proc.communicate()

    try:
        win32pipe.ConnectNamedPipe(pipe, None)
        print("Komorebi Connected")

        while True:
            result, data = win32file.ReadFile(pipe, KOMOREBI_BUFF_SIZE, None)

            # Filters out newlines
            if not data.strip():
                continue
            event = json.loads(data.decode("utf-8"))
            print("Received event:", event)
    except pywintypes.error as e:
        if e.args[0] == 109:
            print("Komorebi Disconnected")
        else:
            print("Unknown Error", e)
    finally:
        win32file.CloseHandle(pipe)

Hi, thanks for providing this. The api has changed slightly and 'add-subscriber' should now be 'subscribe' (in lines 25 and 31).

I've corrected it here: https://gist.github.com/peddamat/ac8f78a375d003d69669d75a012a6c46

In case somebody needs to read komorebi events from named win32 pipe asynchronously through asyncio, here is another gist (heavily based on this one).