84 lines
2.7 KiB
Rust
84 lines
2.7 KiB
Rust
use std::fs::File;
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use std::io::{Read, Write};
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use std::mem;
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use std::thread;
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use keymap;
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pub fn keyboard() {
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let mut file = File::open("irq:1").expect("ps2d: failed to open irq:1");
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let mut input = File::open("display:input").expect("ps2d: failed to open display:input");
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let mut ctrl = false;
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let mut lshift = false;
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let mut rshift = false;
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loop {
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let mut irqs = [0; 8];
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if file.read(&mut irqs).expect("ps2d: failed to read irq:1") >= mem::size_of::<usize>() {
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let data: u8;
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unsafe {
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asm!("in al, dx" : "={al}"(data) : "{dx}"(0x60) : : "intel", "volatile");
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}
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file.write(&irqs).expect("ps2d: failed to write irq:1");
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let (scancode, pressed) = if data >= 0x80 {
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(data - 0x80, false)
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} else {
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(data, true)
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};
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if scancode == 0x1D {
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ctrl = pressed;
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} else if scancode == 0x2A {
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lshift = pressed;
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} else if scancode == 0x36 {
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rshift = pressed;
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} else if pressed {
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match scancode {
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0x47 => { // Home
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input.write(b"\x1B[H").unwrap();
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},
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0x48 => { // Up
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input.write(b"\x1B[A").unwrap();
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},
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0x49 => { // Page up
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input.write(b"\x1B[5~").unwrap();
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},
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0x4B => { // Left
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input.write(b"\x1B[D").unwrap();
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},
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0x4D => { // Right
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input.write(b"\x1B[C").unwrap();
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},
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0x4F => { // End
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input.write(b"\x1B[F").unwrap();
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},
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0x50 => { // Down
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input.write(b"\x1B[B").unwrap();
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},
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0x51 => { // Page down
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input.write(b"\x1B[6~").unwrap();
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},
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_ => {
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let c = if ctrl {
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match keymap::get_char(scancode, false) {
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c @ 'a' ... 'z' => (c as u8 - b'a' + b'\x01') as char,
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c => c
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}
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} else {
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keymap::get_char(scancode, lshift || rshift)
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};
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if c != '\0' {
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input.write(&[c as u8]).unwrap();
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}
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}
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}
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}
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} else {
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thread::yield_now();
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}
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}
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}
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