zellij/zellij-client/src/stdin_handler.rs
Aram Drevekenin 21e5ffdfd8
fix(input): properly handle bracketed paste (#810)
* fix(input): properly handle bracketed paste

* style(fmt): make rustfmt happy
2021-10-27 19:20:43 +02:00

102 lines
3.8 KiB
Rust

use crate::os_input_output::ClientOsApi;
use crate::InputInstruction;
use termion::input::TermReadEventsAndRaw;
use zellij_utils::channels::SenderWithContext;
use zellij_utils::input::mouse::MouseEvent;
use zellij_utils::termion;
fn bracketed_paste_end_position(stdin_buffer: &[u8]) -> Option<usize> {
let bracketed_paste_end = vec![27, 91, 50, 48, 49, 126]; // \u{1b}[201
let mut bp_position = 0;
let mut position = None;
for (i, byte) in stdin_buffer.iter().enumerate() {
if Some(byte) == bracketed_paste_end.get(bp_position) {
position = Some(i);
bp_position += 1;
if bp_position == bracketed_paste_end.len() - 1 {
break;
}
} else {
bp_position = 0;
position = None;
}
}
if bp_position == bracketed_paste_end.len() - 1 {
position
} else {
None
}
}
pub(crate) fn stdin_loop(
os_input: Box<dyn ClientOsApi>,
send_input_instructions: SenderWithContext<InputInstruction>,
) {
let mut pasting = false;
let bracketed_paste_start = vec![27, 91, 50, 48, 48, 126]; // \u{1b}[200~
loop {
let mut stdin_buffer = os_input.read_from_stdin();
if pasting
|| (stdin_buffer.len() > bracketed_paste_start.len()
&& stdin_buffer
.iter()
.take(bracketed_paste_start.len())
.eq(bracketed_paste_start.iter()))
{
match bracketed_paste_end_position(&stdin_buffer) {
Some(paste_end_position) => {
let pasted_input = stdin_buffer.drain(..=paste_end_position).collect();
send_input_instructions
.send(InputInstruction::PastedText(pasted_input))
.unwrap();
pasting = false;
}
None => {
send_input_instructions
.send(InputInstruction::PastedText(stdin_buffer))
.unwrap();
pasting = true;
continue;
}
}
}
if stdin_buffer.is_empty() {
continue;
}
for key_result in stdin_buffer.events_and_raw() {
let (key_event, raw_bytes) = key_result.unwrap();
if let termion::event::Event::Mouse(me) = key_event {
let mouse_event = zellij_utils::input::mouse::MouseEvent::from(me);
if let MouseEvent::Hold(_) = mouse_event {
// as long as the user is holding the mouse down (no other stdin, eg.
// MouseRelease) we need to keep sending this instruction to the app,
// because the app itself doesn't have an event loop in the proper
// place
let mut poller = os_input.stdin_poller();
send_input_instructions
.send(InputInstruction::KeyEvent(
key_event.clone(),
raw_bytes.clone(),
))
.unwrap();
loop {
let ready = poller.ready();
if ready {
break;
}
send_input_instructions
.send(InputInstruction::KeyEvent(
key_event.clone(),
raw_bytes.clone(),
))
.unwrap();
}
continue;
}
}
send_input_instructions
.send(InputInstruction::KeyEvent(key_event, raw_bytes))
.unwrap();
}
}
}