linux terminal mouse input in V

mouse.v

import os

os.system('stty -icanon')
os.system('stty -echo')
println('\x1b[?1003h\x1b[?1015h\x1b[?1006h')

for signal in 0 .. 64 {
	os.signal(signal, fn() {
		os.system('stty icanon')
		os.system('stty echo')
		println('\x1b[?1003l\x1b[?1015l\x1b[?1006l')
		exit(0)
	})
}

for {
	mut buf := []byte{ len: 16 } // byteptr(malloc(16))
	nr_chars := C.read(C.STDIN_FILENO, buf.data, 16)
	if nr_chars < 3 { continue }

	str := buf[3..nr_chars].bytestr()
	split := str.split(';')
	if split.len < 3 { continue }

	x, y := split[1].int(), split[2].int()
	if split[0] == '0' {
		last := str[nr_chars - 4]
		if last == `M` { println('($x, $y) LEFT MOUSE DOWN') }
		if last == `m` { println('($x, $y) LEFT MOUSE UP') }
	} else if split[0] == '2' {
		last := str[nr_chars - 4]
		if last == `M` { println('($x, $y) MIDDLE MOUSE DOWN') }
		if last == `m` { println('($x, $y) MIDDLE MOUSE UP') }
	} else if split[0] == '32' {
		println('($x, $y) MOUSE DRAG')
	} else if split[0] == '35' {
		println('($x, $y) MOUSE MOVE')
	} else if split[0] == '64' {
		println('($x, $y) SCROLL UP')
	} else if split[0] == '65' {
		println('($x, $y) SCROLL DOWN')
	} else {
		println('OTHER | ${str:-16} | $str.len')
	}
}