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Allow setting callback for push char

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This commit is contained in:
Jianfeng Jiang
2023-07-26 16:27:24 +08:00
committed by Tate, Hongliang Tian
parent a088acd0ec
commit 36281eb1eb
2 changed files with 10 additions and 9 deletions
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17
services/libs/jinux-std/src/device/tty/line_discipline.rs
View File

@ -5,6 +5,7 @@ use crate::{
prelude::*,
process::{process_table, signal::signals::kernel::KernelSignal, Pgid},
};
use alloc::format;
use ringbuf::{ring_buffer::RbBase, Rb, StaticRb};
use super::termio::{KernelTermios, CC_C_CHAR};
@ -75,7 +76,7 @@ impl LineDiscipline {
}
/// push char to line discipline. This function should be called in input interrupt handler.
pub fn push_char(&self, mut item: u8) {
pub fn push_char(&self, mut item: u8, echo_callback: fn(&str)) {
let termios = self.termios.lock_irq_disabled();
if termios.contains_icrnl() {
if item == b'\r' {
@ -128,7 +129,7 @@ impl LineDiscipline {
}
if termios.contain_echo() {
self.output_char(item, &termios);
self.output_char(item, &termios, echo_callback);
}
if self.is_readable() {
@ -142,22 +143,22 @@ impl LineDiscipline {
}
// TODO: respect output flags
fn output_char(&self, item: u8, termios: &KernelTermios) {
fn output_char(&self, item: u8, termios: &KernelTermios, echo_callback: fn(&str)) {
match item {
b'\n' => print!("\n"),
b'\r' => print!("\r\n"),
b'\n' => echo_callback("\n"),
b'\r' => echo_callback("\r\n"),
item if item == *termios.get_special_char(CC_C_CHAR::VERASE) => {
// write a space to overwrite current character
let backspace: &str = core::str::from_utf8(&[b'\x08', b' ', b'\x08']).unwrap();
print!("{}", backspace);
echo_callback(backspace);
}
item if 0x20 <= item && item < 0x7f => print!("{}", char::from(item)),
item if 0 < item && item < 0x20 && termios.contains_echo_ctl() => {
// The unprintable chars between 1-31 are mapped to ctrl characters between 65-95.
// e.g., 0x3 is mapped to 0x43, which is C. So, we will print ^C when 0x3 is met.
if 0 < item && item < 0x20 {
let ctrl_char = char::from(item + 0x40);
print!("^{ctrl_char}");
let ctrl_char = format!("^{}", char::from(item + 0x40));
echo_callback(&ctrl_char);
}
}
item => {}

2
services/libs/jinux-std/src/device/tty/mod.rs
View File

@ -50,7 +50,7 @@ impl Tty {
}
pub fn receive_char(&self, item: u8) {
self.ldisc.push_char(item);
self.ldisc.push_char(item, |content| print!("{}", content));
}
}