minecraft-console.py

#!/usr/bin/python3
import curses
import subprocess
import threading

def run_journalctl(win):
    process = subprocess.Popen(['journalctl', '-u', 'minecraft', '--follow'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
    while True:
        line = process.stdout.readline()
        if not line:
            break
        win.addstr(line.decode())
        win.refresh()

def input_commands(win):
    with open('/run/minecraft.stdin', 'a') as f:
        while True:
            win.clear()
            win.addstr("Enter  command (Ctrl-C to exit): ")
            curses.echo()
            win.move(1, 0)
            command = win.getstr().decode()
            f.write(command + "\n")
            f.flush()
            curses.noecho()
            win.clear()

def main(stdscr):
    try:
        curses.curs_set(1)
        stdscr.clear()
        
        height, width = stdscr.getmaxyx()
        journal_height = int(height * 0.9)
        input_height = height - journal_height

        journal_win = stdscr.subwin(journal_height, width, 0, 0)
        journal_win.scrollok(True)
        input_win = stdscr.subwin(input_height, width, journal_height, 0)

        thread = threading.Thread(target=run_journalctl, args=(journal_win,))
        thread.daemon = True
        thread.start()

        input_commands(input_win)
        
    except KeyboardInterrupt:
        stdscr.clear()
        stdscr.refresh()
    finally:
        curses.endwin()

if __name__ == "__main__":
    curses.wrapper(main)