Browse Source
Add embed pty support
Add embed pty support
Emulate a terminal within meli. In the next commit it will be used to embed an editor in the composing tab. This is a non-complete xterm emulation that has some bugs.jmap
9 changed files with 1361 additions and 29 deletions
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14Cargo.lock
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8src/bin.rs
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1ui/Cargo.toml
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60ui/src/state.rs
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1ui/src/terminal.rs
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319ui/src/terminal/embed.rs
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889ui/src/terminal/embed/grid.rs
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87ui/src/terminal/keys.rs
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11ui/src/types.rs
@ -0,0 +1,319 @@ |
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use crate::split_command;
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use crate::terminal::position::Area;
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use crate::terminal::position::*;
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use melib::log;
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use melib::ERROR;
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use nix::fcntl::{open, OFlag};
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use nix::ioctl_write_ptr_bad;
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use nix::libc::{STDERR_FILENO, STDIN_FILENO, STDOUT_FILENO};
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use nix::pty::{grantpt, posix_openpt, ptsname, unlockpt, Winsize};
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use nix::sys::{stat, wait::waitpid};
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use nix::unistd::{dup2, fork, ForkResult};
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use std::ffi::CString;
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use std::os::unix::io::{AsRawFd, FromRawFd, IntoRawFd};
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mod grid;
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pub use grid::EmbedGrid;
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// ioctl command to set window size of pty:
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use libc::TIOCSWINSZ;
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use std::path::Path;
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use std::convert::TryFrom;
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use std::io::Read;
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use std::io::Write;
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use std::sync::{Arc, Mutex};
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// Macro generated function that calls ioctl to set window size of slave pty end
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ioctl_write_ptr_bad!(set_window_size, TIOCSWINSZ, Winsize);
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pub fn create_pty(area: Area, command: String) -> nix::Result<Arc<Mutex<EmbedGrid>>> {
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// Open a new PTY master
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let master_fd = posix_openpt(OFlag::O_RDWR)?;
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// Allow a slave to be generated for it
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grantpt(&master_fd)?;
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unlockpt(&master_fd)?;
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// Get the name of the slave
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let slave_name = unsafe { ptsname(&master_fd) }?;
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// Try to open the slave
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//let _slave_fd = open(Path::new(&slave_name), OFlag::O_RDWR, Mode::empty())?;
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{
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let winsize = Winsize {
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ws_row: <u16>::try_from(height!(area)).unwrap(),
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ws_col: <u16>::try_from(width!(area)).unwrap(),
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ws_xpixel: 0,
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ws_ypixel: 0,
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};
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let master_fd = master_fd.clone().into_raw_fd();
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unsafe { set_window_size(master_fd, &winsize).unwrap() };
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}
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let child_pid = match fork() {
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Ok(ForkResult::Child) => {
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/* Open slave end for pseudoterminal */
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let slave_fd = open(Path::new(&slave_name), OFlag::O_RDWR, stat::Mode::empty())?;
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let child_pid = match fork() {
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Ok(ForkResult::Child) => {
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// assign stdin, stdout, stderr to the tty
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dup2(slave_fd, STDIN_FILENO).unwrap();
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dup2(slave_fd, STDOUT_FILENO).unwrap();
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dup2(slave_fd, STDERR_FILENO).unwrap();
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let parts = split_command!(command);
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let (cmd, _) = (parts[0], &parts[1..]);
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if let Err(e) = nix::unistd::execv(
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&CString::new(cmd).unwrap(),
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&parts
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.iter()
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.map(|&a| CString::new(a).unwrap())
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.collect::<Vec<CString>>(),
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) {
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log(format!("Could not execute `{}`: {}", command, e,), ERROR);
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std::process::exit(-1);
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}
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/* This path shouldn't be executed. */
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std::process::exit(0);
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}
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Ok(ForkResult::Parent { child }) => child,
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Err(e) => panic!(e),
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};
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waitpid(child_pid, None).unwrap();
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std::process::exit(0);
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}
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Ok(ForkResult::Parent { child }) => child,
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Err(e) => panic!(e),
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};
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let stdin = unsafe { std::fs::File::from_raw_fd(master_fd.clone().into_raw_fd()) };
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let mut embed_grid = EmbedGrid::new(stdin, child_pid);
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embed_grid.set_terminal_size((width!(area), height!(area)));
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let grid = Arc::new(Mutex::new(embed_grid));
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let grid_ = grid.clone();
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std::thread::Builder::new()
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.spawn(move || {
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let master_fd = master_fd.into_raw_fd();
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let master_file = unsafe { std::fs::File::from_raw_fd(master_fd) };
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forward_pty_translate_escape_codes(master_file, grid_);
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})
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.unwrap();
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Ok(grid)
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}
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fn forward_pty_translate_escape_codes(pty_fd: std::fs::File, grid: Arc<Mutex<EmbedGrid>>) {
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let mut bytes_iter = pty_fd.bytes();
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debug!("waiting for bytes");
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while let Some(Ok(byte)) = bytes_iter.next() {
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debug!("got byte {}", byte as char);
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grid.lock().unwrap().process_byte(byte);
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}
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}
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#[derive(Debug)]
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pub enum State {
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ExpectingControlChar,
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G0, // Designate G0 Character Set
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Osc1(Vec<u8>), //ESC ] Operating System Command (OSC is 0x9d).
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Osc2(Vec<u8>, Vec<u8>),
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Csi, // ESC [ Control Sequence Introducer (CSI is 0x9b).
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Csi1(Vec<u8>),
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Csi2(Vec<u8>, Vec<u8>),
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Csi3(Vec<u8>, Vec<u8>, Vec<u8>),
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CsiQ(Vec<u8>),
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Normal,
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}
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/* Used for debugging */
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struct EscCode<'a>(&'a State, u8);
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impl<'a> From<(&'a mut State, u8)> for EscCode<'a> {
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fn from(val: (&mut State, u8)) -> EscCode {
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let (s, b) = val;
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EscCode(s, b)
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}
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}
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impl<'a> From<(&'a State, u8)> for EscCode<'a> {
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fn from(val: (&State, u8)) -> EscCode {
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let (s, b) = val;
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EscCode(s, b)
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}
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}
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impl std::fmt::Display for EscCode<'_> {
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fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
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use State::*;
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macro_rules! unsafestr {
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($buf:ident) => {
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unsafe { std::str::from_utf8_unchecked($buf) }
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};
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}
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match self {
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EscCode(G0, b'B') => write!(f, "ESC(B\t\tG0 USASCII charset set"),
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EscCode(G0, c) => write!(f, "ESC({}\t\tG0 charset set", *c as char),
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EscCode(Osc1(ref buf), ref c) => {
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write!(f, "ESC]{}{}\t\tOSC", unsafestr!(buf), *c as char)
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}
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EscCode(Osc2(ref buf1, ref buf2), c) => write!(
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f,
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"ESC]{};{}{}\t\tOSC [UNKNOWN]",
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unsafestr!(buf1),
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unsafestr!(buf2),
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*c as char
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),
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EscCode(Csi, b'm') => write!(
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f,
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"ESC[m\t\tCSI Character Attributes | Set Attr and Color to Normal (default)"
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),
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EscCode(Csi, b'K') => write!(
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f,
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"ESC[K\t\tCSI Erase from the cursor to the end of the line"
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),
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EscCode(Csi, b'J') => write!(
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f,
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"ESC[J\t\tCSI Erase from the cursor to the end of the screen"
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),
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EscCode(Csi, b'H') => write!(f, "ESC[H\t\tCSI Move the cursor to home position."),
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EscCode(Csi, c) => write!(f, "ESC[{}\t\tCSI [UNKNOWN]", *c as char),
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EscCode(Csi1(ref buf), b'm') => write!(
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f,
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"ESC[{}m\t\tCSI Character Attributes | Set fg, bg color",
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unsafestr!(buf)
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),
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EscCode(Csi1(ref buf), b'n') => write!(
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f,
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"ESC[{}n\t\tCSI Device Status Report (DSR)| Report Cursor Position",
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unsafestr!(buf)
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),
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EscCode(Csi1(ref buf), b't') if buf == b"18" => write!(
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f,
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"ESC[18t\t\tReport the size of the text area in characters",
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),
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EscCode(Csi1(ref buf), b't') => write!(
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f,
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"ESC[{buf}t\t\tWindow manipulation, skipped",
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buf = unsafestr!(buf)
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),
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EscCode(Csi1(ref buf), b'B') => write!(
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f,
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"ESC[{buf}B\t\tCSI Cursor Down {buf} Times",
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buf = unsafestr!(buf)
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),
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EscCode(Csi1(ref buf), b'C') => write!(
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f,
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"ESC[{buf}C\t\tCSI Cursor Forward {buf} Times",
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buf = unsafestr!(buf)
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),
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EscCode(Csi1(ref buf), b'D') => write!(
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f,
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"ESC[{buf}D\t\tCSI Cursor Backward {buf} Times",
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buf = unsafestr!(buf)
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),
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EscCode(Csi1(ref buf), b'E') => write!(
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f,
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"ESC[{buf}E\t\tCSI Cursor Next Line {buf} Times",
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buf = unsafestr!(buf)
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),
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EscCode(Csi1(ref buf), b'F') => write!(
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f,
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"ESC[{buf}F\t\tCSI Cursor Preceding Line {buf} Times",
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buf = unsafestr!(buf)
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),
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EscCode(Csi1(ref buf), b'G') => write!(
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f,
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"ESC[{buf}G\t\tCursor Character Absolute [column={buf}] (default = [row,1])",
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buf = unsafestr!(buf)
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),
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EscCode(Csi1(ref buf), b'P') => write!(
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f,
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"ESC[{buf}P\t\tDelete P s Character(s) (default = 1) (DCH). ",
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buf = unsafestr!(buf)
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),
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EscCode(Csi1(ref buf), b'S') => write!(
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f,
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"ESC[{buf}S\t\tCSI P s S Scroll up P s lines (default = 1) (SU), VT420, EC",
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buf = unsafestr!(buf)
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),
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EscCode(Csi1(ref buf), b'J') => write!(
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f,
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"Erase in display {buf}",
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buf = unsafestr!(buf)
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),
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EscCode(Csi1(ref buf), c) => {
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write!(f, "ESC[{}{}\t\tCSI [UNKNOWN]", unsafestr!(buf), *c as char)
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}
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EscCode(Csi2(ref buf1, ref buf2), b'r') => write!(
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f,
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"ESC[{};{}r\t\tCSI Set Scrolling Region [top;bottom] (default = full size of window) (DECSTBM), VT100.",
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unsafestr!(buf1),
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unsafestr!(buf2),
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),
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EscCode(Csi2(ref buf1, ref buf2), c) => write!(
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f,
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"ESC[{};{}{}\t\tCSI",
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unsafestr!(buf1),
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unsafestr!(buf2),
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*c as char
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),
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EscCode(Csi3(ref buf1, ref buf2, ref buf3), b'm') => write!(
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f,
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"ESC[{};{};{}m\t\tCSI Character Attributes | Set fg, bg color",
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unsafestr!(buf1),
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unsafestr!(buf2),
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unsafestr!(buf3),
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),
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EscCode(Csi3(ref buf1, ref buf2, ref buf3), c) => write!(
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f,
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"ESC[{};{};{}{}\t\tCSI [UNKNOWN]",
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unsafestr!(buf1),
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unsafestr!(buf2),
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unsafestr!(buf3),
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*c as char
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),
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EscCode(CsiQ(ref buf), b's') => write!(
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f,
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"ESC[?{}r\t\tCSI Save DEC Private Mode Values",
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unsafestr!(buf)
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),
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EscCode(CsiQ(ref buf), b'r') => write!(
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f,
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"ESC[?{}r\t\tCSI Restore DEC Private Mode Values",
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unsafestr!(buf)
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),
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EscCode(CsiQ(ref buf), b'h') if buf == b"25" => write!(
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f,
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"ESC[?25h\t\tCSI DEC Private Mode Set (DECSET) show cursor",
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),
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EscCode(CsiQ(ref buf), b'h') if buf == b"12" => write!(
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f,
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"ESC[?12h\t\tCSI DEC Private Mode Set (DECSET) Start Blinking Cursor.",
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),
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EscCode(CsiQ(ref buf), b'h') => write!(
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f,
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"ESC[?{}h\t\tCSI DEC Private Mode Set (DECSET). [UNKNOWN]",
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unsafestr!(buf)
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),
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EscCode(CsiQ(ref buf), b'l') if buf == b"12" => write!(
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f,
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"ESC[?12l\t\tCSI DEC Private Mode Set (DECSET) Stop Blinking Cursor",
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),
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EscCode(CsiQ(ref buf), b'l') if buf == b"25" => write!(
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f,
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"ESC[?25l\t\tCSI DEC Private Mode Set (DECSET) hide cursor",
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),
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EscCode(CsiQ(ref buf), c) => {
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write!(f, "ESC[?{}{}\t\tCSI [UNKNOWN]", unsafestr!(buf), *c as char)
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}
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EscCode(unknown, c) => {
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write!(f, "{:?}{} [UNKNOWN]", unknown, c)
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}
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}
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}
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}
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@ -0,0 +1,889 @@ |
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use super::*;
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use crate::terminal::cells::*;
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use melib::error::{MeliError, Result};
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use nix::sys::wait::WaitStatus;
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use nix::sys::wait::{waitpid, WaitPidFlag};
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/**
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* `EmbedGrid` manages the terminal grid state of the embed process.
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*
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* The embed process sends bytes to the master end (see super mod) and interprets them in a state
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* machine stored in `State`. Escape codes are translated as changes to the grid, eg changes in a
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* cell's colors.
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*
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* The main process copies the grid whenever the actual terminal is redrawn.
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**/
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/// In a scroll region up and down cursor movements shift the region vertically. The new lines are
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/// empty.
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#[derive(Debug)]
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struct ScrollRegion {
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top: usize,
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bottom: usize,
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}
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#[derive(Debug)]
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pub struct EmbedGrid {
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cursor: (usize, usize),
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/// [top;bottom]
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scroll_region: ScrollRegion,
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pub grid: CellBuffer,
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pub state: State,
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pub stdin: std::fs::File,
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/// Pid of the embed process
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pub child_pid: nix::unistd::Pid,
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/// (width, height)
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pub terminal_size: (usize, usize),
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fg_color: Color,
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bg_color: Color,
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/// Store the fg/bg color when highlighting the cell where the cursor is so that it can be
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/// restored afterwards
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prev_fg_color: Option<Color>,
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prev_bg_color: Option<Color>,
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show_cursor: bool,
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/// Store state in case a multi-byte character is encountered
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codepoints: CodepointBuf,
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}
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#[derive(Debug, PartialEq)]
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enum CodepointBuf {
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None,
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TwoCodepoints(Vec<u8>),
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ThreeCodepoints(Vec<u8>),
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FourCodepoints(Vec<u8>),
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}
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impl EmbedGrid {
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pub fn new(stdin: std::fs::File, child_pid: nix::unistd::Pid) -> Self {
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EmbedGrid {
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cursor: (0, 0),
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scroll_region: ScrollRegion { top: 0, bottom: 0 },
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terminal_size: (0, 0),
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grid: CellBuffer::default(),
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state: State::Normal,
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stdin,
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child_pid,
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fg_color: Color::Default,
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bg_color: Color::Default,
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prev_fg_color: None,
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prev_bg_color: None,
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show_cursor: true,
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codepoints: CodepointBuf::None,
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}
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}
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pub fn set_terminal_size(&mut self, new_val: (usize, usize)) {
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if new_val == self.terminal_size {
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return;
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}
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debug!("resizing to {:?}", new_val);
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if self.scroll_region.top == 0 && self.scroll_region.bottom == self.terminal_size.1 {
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self.scroll_region.bottom = new_val.1;
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}
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self.terminal_size = new_val;
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self.grid.resize(new_val.0, new_val.1, Cell::default());
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self.grid.clear(Cell::default());
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self.cursor = (0, 0);
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let winsize = Winsize {
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ws_row: <u16>::try_from(new_val.1).unwrap(),
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ws_col: <u16>::try_from(new_val.0).unwrap(),
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ws_xpixel: 0,
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ws_ypixel: 0,
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};
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let master_fd = self.stdin.as_raw_fd();
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unsafe { set_window_size(master_fd, &winsize).unwrap() };
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nix::sys::signal::kill(self.child_pid, nix::sys::signal::SIGWINCH).unwrap();
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}
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pub fn wake_up(&self) {
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nix::sys::signal::kill(self.child_pid, nix::sys::signal::SIGCONT).unwrap();
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}
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pub fn stop(&self) {
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debug!("stopping");
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nix::sys::signal::kill(debug!(self.child_pid), nix::sys::signal::SIGSTOP).unwrap();
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}
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|||
pub fn is_active(&self) -> Result<WaitStatus> {
|
|||
debug!(waitpid(self.child_pid, Some(WaitPidFlag::WNOHANG),))
|
|||
.map_err(|e| MeliError::new(e.to_string()))
|
|||
}
|
|||
|
|||
pub fn process_byte(&mut self, byte: u8) {
|
|||
let EmbedGrid {
|
|||
ref mut cursor,
|
|||
ref mut scroll_region,
|
|||
ref terminal_size,
|
|||
ref mut grid,
|
|||
ref mut state,
|
|||
ref mut stdin,
|
|||
ref mut fg_color,
|
|||
ref mut bg_color,
|
|||
ref mut prev_fg_color,
|
|||
ref mut prev_bg_color,
|
|||
ref mut codepoints,
|
|||
ref mut show_cursor,
|
|||
child_pid: _,
|
|||
} = self;
|
|||
|
|||
macro_rules! increase_cursor_x {
|
|||
() => {
|
|||
if cursor.0 + 1 < terminal_size.0 {
|
|||
cursor.0 += 1;
|
|||
}
|
|||
};
|
|||
}
|
|||
|
|||
macro_rules! cursor_x {
|
|||
() => {{
|
|||
if cursor.0 >= terminal_size.0 {
|
|||
cursor.0 = terminal_size.0.saturating_sub(1);
|
|||
}
|
|||
cursor.0
|
|||
}};
|
|||
}
|
|||
macro_rules! cursor_y {
|
|||
() => {
|
|||
std::cmp::min(
|
|||
cursor.1 + scroll_region.top,
|
|||
terminal_size.1.saturating_sub(1),
|
|||
)
|
|||
};
|
|||
}
|
|||
macro_rules! cursor_val {
|
|||
() => {
|
|||
(cursor_x!(), cursor_y!())
|
|||
};
|
|||
}
|
|||
|
|||
let mut state = state;
|
|||
match (byte, &mut state) {
|
|||
(b'\x1b', State::Normal) => {
|
|||
*state = State::ExpectingControlChar;
|
|||
}
|
|||
(b']', State::ExpectingControlChar) => {
|
|||
let buf1 = Vec::new();
|
|||
*state = State::Osc1(buf1);
|
|||
}
|
|||
(b'[', State::ExpectingControlChar) => {
|
|||
*state = State::Csi;
|
|||
}
|
|||
(b'(', State::ExpectingControlChar) => {
|
|||
*state = State::G0;
|
|||
}
|
|||
(b'J', State::ExpectingControlChar) => {
|
|||
// ESCJ Erase from the cursor to the end of the screen
|
|||
debug!("sending {}", EscCode::from((&(*state), byte)));
|
|||
debug!("erasing from {:?} to {:?}", cursor, terminal_size);
|
|||
for y in cursor.1..terminal_size.1 {
|
|||
for x in cursor.0..terminal_size.0 {
|
|||
grid[(x, y)] = Cell::default();
|
|||
}
|
|||
}
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'K', State::ExpectingControlChar) => {
|
|||
// ESCK Erase from the cursor to the end of the line
|
|||
debug!("sending {}", EscCode::from((&(*state), byte)));
|
|||
for x in cursor.0..terminal_size.0 {
|
|||
grid[(x, cursor.1)] = Cell::default();
|
|||
}
|
|||
*state = State::Normal;
|
|||
}
|
|||
(_, State::ExpectingControlChar) => {
|
|||
debug!(
|
|||
"unrecognised: byte is {} and state is {:?}",
|
|||
byte as char, state
|
|||
);
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'?', State::Csi) => {
|
|||
let buf1 = Vec::new();
|
|||
*state = State::CsiQ(buf1);
|
|||
}
|
|||
/* OSC stuff */
|
|||
(c, State::Osc1(ref mut buf)) if (c >= b'0' && c <= b'9') || c == b'?' => {
|
|||
buf.push(c);
|
|||
}
|
|||
(b';', State::Osc1(ref mut buf1_p)) => {
|
|||
let buf1 = std::mem::replace(buf1_p, Vec::new());
|
|||
let buf2 = Vec::new();
|
|||
*state = State::Osc2(buf1, buf2);
|
|||
}
|
|||
(c, State::Osc2(_, ref mut buf)) if (c >= b'0' && c <= b'9') || c == b'?' => {
|
|||
buf.push(c);
|
|||
}
|
|||
(_, State::Osc1(_)) => {
|
|||
debug!("ignoring unknown code {}", EscCode::from((&(*state), byte)));
|
|||
*state = State::Normal;
|
|||
}
|
|||
(_, State::Osc2(_, _)) => {
|
|||
debug!("ignoring unknown code {}", EscCode::from((&(*state), byte)));
|
|||
*state = State::Normal;
|
|||
}
|
|||
/* Normal */
|
|||
(b'\r', State::Normal) => {
|
|||
debug!("carriage return x-> 0, cursor was: {:?}", cursor);
|
|||
cursor.0 = 0;
|
|||
debug!("cursor became: {:?}", cursor);
|
|||
}
|
|||
(b'\n', State::Normal) => {
|
|||
//debug!("setting cell {:?} char '{}'", cursor, c as char);
|
|||
debug!("newline y-> y+1, cursor was: {:?}", cursor);
|
|||
if cursor.1 + 1 < terminal_size.1 {
|
|||
cursor.1 += 1;
|
|||
}
|
|||
debug!("cursor became: {:?}", cursor);
|
|||
}
|
|||
(b'', State::Normal) => {
|
|||
debug!("Visual bell ^G, ignoring {:?}", cursor);
|
|||
}
|
|||
(0x08, State::Normal) => {
|
|||
/* Backspace */
|
|||
debug!("backspace x-> x-1, cursor was: {:?}", cursor);
|
|||
if cursor.0 > 0 {
|
|||
cursor.0 -= 1;
|
|||
}
|
|||
debug!("cursor became: {:?}", cursor);
|
|||
}
|
|||
(c, State::Normal) => {
|
|||
/* Character to be printed. */
|
|||
if *codepoints == CodepointBuf::None && c & 0x80 == 0 {
|
|||
/* This is a one byte char */
|
|||
grid[cursor_val!()].set_ch(c as char);
|
|||
} else {
|
|||
match codepoints {
|
|||
CodepointBuf::None if c & 0b1110_0000 == 0b1100_0000 => {
|
|||
*codepoints = CodepointBuf::TwoCodepoints(vec![c]);
|
|||
}
|
|||
CodepointBuf::None if c & 0b1111_0000 == 0b1110_0000 => {
|
|||
*codepoints = CodepointBuf::ThreeCodepoints(vec![c]);
|
|||
}
|
|||
CodepointBuf::None if c & 0b1111_1000 == 0b1111_0000 => {
|
|||
*codepoints = CodepointBuf::FourCodepoints(vec![c]);
|
|||
}
|
|||
CodepointBuf::TwoCodepoints(buf) => {
|
|||
grid[cursor_val!()].set_ch(
|
|||
unsafe { std::str::from_utf8_unchecked(&[buf[0], c]) }
|
|||
.chars()
|
|||
.next()
|
|||
.unwrap(),
|
|||
);
|
|||
*codepoints = CodepointBuf::None;
|
|||
}
|
|||
CodepointBuf::ThreeCodepoints(buf) if buf.len() == 2 => {
|
|||
grid[cursor_val!()].set_ch(
|
|||
unsafe { std::str::from_utf8_unchecked(&[buf[0], buf[1], c]) }
|
|||
.chars()
|
|||
.next()
|
|||
.unwrap(),
|
|||
);
|
|||
*codepoints = CodepointBuf::None;
|
|||
}
|
|||
CodepointBuf::ThreeCodepoints(buf) => {
|
|||
buf.push(c);
|
|||
return;
|
|||
}
|
|||
CodepointBuf::FourCodepoints(buf) if buf.len() == 3 => {
|
|||
grid[cursor_val!()].set_ch(
|
|||
unsafe {
|
|||
std::str::from_utf8_unchecked(&[buf[0], buf[1], buf[2], c])
|
|||
}
|
|||
.chars()
|
|||
.next()
|
|||
.unwrap(),
|
|||
);
|
|||
*codepoints = CodepointBuf::None;
|
|||
}
|
|||
CodepointBuf::FourCodepoints(buf) => {
|
|||
buf.push(c);
|
|||
return;
|
|||
}
|
|||
_ => {
|
|||
debug!(
|
|||
"invalid utf8 sequence: codepoints = {:?} and c={}",
|
|||
codepoints, c
|
|||
);
|
|||
*codepoints = CodepointBuf::None;
|
|||
}
|
|||
}
|
|||
}
|
|||
|
|||
grid[cursor_val!()].set_fg(*fg_color);
|
|||
grid[cursor_val!()].set_bg(*bg_color);
|
|||
increase_cursor_x!();
|
|||
}
|
|||
(b'u', State::Csi) => {
|
|||
/* restore cursor */
|
|||
debug!("restore cursor {}", EscCode::from((&(*state), byte)));
|
|||
*show_cursor = true;
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'm', State::Csi) => {
|
|||
/* Reset character Attributes (SGR). Ps = 0 -> Normal (default), VT100 */
|
|||
debug!("{}", EscCode::from((&(*state), byte)));
|
|||
*fg_color = Color::Default;
|
|||
*bg_color = Color::Default;
|
|||
grid[cursor_val!()].set_fg(Color::Default);
|
|||
grid[cursor_val!()].set_bg(Color::Default);
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'H', State::Csi) => {
|
|||
/* move cursor to (1,1) */
|
|||
debug!("{}", EscCode::from((&(*state), byte)),);
|
|||
debug!("move cursor to (1,1) cursor before: {:?}", *cursor);
|
|||
*cursor = (0, 0);
|
|||
debug!("cursor after: {:?}", *cursor);
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'P', State::Csi) => {
|
|||
/* delete one character */
|
|||
debug!("{}", EscCode::from((&(*state), byte)),);
|
|||
grid[cursor_val!()].set_ch(' ');
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'C', State::Csi) => {
|
|||
// ESC[C CSI Cursor Forward one Time
|
|||
debug!("cursor forward one time, cursor was: {:?}", cursor);
|
|||
cursor.0 = std::cmp::min(cursor.0 + 1, terminal_size.0.saturating_sub(1));
|
|||
debug!("cursor became: {:?}", cursor);
|
|||
*state = State::Normal;
|
|||
}
|
|||
/* CSI ? stuff */
|
|||
(c, State::CsiQ(ref mut buf)) if c >= b'0' && c <= b'9' => {
|
|||
buf.push(c);
|
|||
}
|
|||
(b'h', State::CsiQ(ref buf)) => {
|
|||
match buf.as_slice() {
|
|||
b"25" => {
|
|||
*show_cursor = true;
|
|||
*prev_fg_color = Some(grid[cursor_val!()].fg());
|
|||
*prev_bg_color = Some(grid[cursor_val!()].bg());
|
|||
grid[cursor_val!()].set_fg(Color::Black);
|
|||
grid[cursor_val!()].set_bg(Color::White);
|
|||
}
|
|||
_ => {}
|
|||
}
|
|||
|
|||
debug!("{}", EscCode::from((&(*state), byte)));
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'l', State::CsiQ(ref mut buf)) => {
|
|||
match buf.as_slice() {
|
|||
b"25" => {
|
|||
*show_cursor = false;
|
|||
if let Some(fg_color) = prev_fg_color.take() {
|
|||
grid[cursor_val!()].set_fg(fg_color);
|
|||
} else {
|
|||
grid[cursor_val!()].set_fg(*fg_color);
|
|||
}
|
|||
if let Some(bg_color) = prev_bg_color.take() {
|
|||
grid[cursor_val!()].set_bg(bg_color);
|
|||
} else {
|
|||
grid[cursor_val!()].set_bg(*bg_color);
|
|||
}
|
|||
}
|
|||
_ => {}
|
|||
}
|
|||
debug!("{}", EscCode::from((&(*state), byte)));
|
|||
*state = State::Normal;
|
|||
}
|
|||
(_, State::CsiQ(_)) => {
|
|||
debug!("ignoring unknown code {}", EscCode::from((&(*state), byte)));
|
|||
*state = State::Normal;
|
|||
}
|
|||
/* END OF CSI ? stuff */
|
|||
(c, State::Csi) if c >= b'0' && c <= b'9' => {
|
|||
let mut buf1 = Vec::new();
|
|||
buf1.push(c);
|
|||
*state = State::Csi1(buf1);
|
|||
}
|
|||
(b'J', State::Csi) => {
|
|||
/* Erase in Display (ED), VT100.*/
|
|||
/* Erase Below (default). */
|
|||
clear_area(
|
|||
grid,
|
|||
(
|
|||
(
|
|||
0,
|
|||
std::cmp::min(
|
|||
cursor.1 + 1 + scroll_region.top,
|
|||
terminal_size.1.saturating_sub(1),
|
|||
),
|
|||
),
|
|||
(
|
|||
terminal_size.0.saturating_sub(1),
|
|||
terminal_size.1.saturating_sub(1),
|
|||
),
|
|||
),
|
|||
);
|
|||
debug!("{}", EscCode::from((&(*state), byte)));
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'K', State::Csi) => {
|
|||
/* Erase in Line (ED), VT100.*/
|
|||
/* Erase to right (Default) */
|
|||
debug!("{}", EscCode::from((&(*state), byte)));
|
|||
for x in cursor.0..terminal_size.0 {
|
|||
grid[(x, cursor.1 + scroll_region.top)] = Cell::default();
|
|||
}
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'M', State::Csi) => {
|
|||
/* Delete line */
|
|||
debug!("{}", EscCode::from((&(*state), byte)));
|
|||
for x in 0..terminal_size.0 {
|
|||
grid[(x, cursor.1 + scroll_region.top)] = Cell::default();
|
|||
}
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'A', State::Csi) => {
|
|||
// Move cursor up 1 line
|
|||
debug!("cursor up 1 times, cursor was: {:?}", cursor);
|
|||
if cursor.1 > 0 {
|
|||
cursor.1 -= 1;
|
|||
} else {
|
|||
debug!("cursor.1 == 0");
|
|||
}
|
|||
debug!("cursor became: {:?}", cursor);
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'r', State::Csi) => {
|
|||
// Set scrolling region to default (size of window)
|
|||
scroll_region.top = 0;
|
|||
scroll_region.bottom = terminal_size.1.saturating_sub(1);
|
|||
*cursor = (0, 0);
|
|||
*state = State::Normal;
|
|||
}
|
|||
(_, State::Csi) => {
|
|||
debug!("ignoring unknown code {}", EscCode::from((&(*state), byte)));
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'K', State::Csi1(buf)) if buf == b"0" => {
|
|||
/* Erase in Line (ED), VT100.*/
|
|||
/* Erase to right (Default) */
|
|||
debug!("{}", EscCode::from((&(*state), byte)));
|
|||
for x in cursor.0..terminal_size.0 {
|
|||
grid[(x, cursor.1 + scroll_region.top)] = Cell::default();
|
|||
}
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'K', State::Csi1(buf)) if buf == b"1" => {
|
|||
/* Erase in Line (ED), VT100.*/
|
|||
/* Erase to left (Default) */
|
|||
for x in cursor.0..=0 {
|
|||
grid[(x, cursor.1 + scroll_region.top)] = Cell::default();
|
|||
}
|
|||
debug!("{}", EscCode::from((&(*state), byte)));
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'K', State::Csi1(buf)) if buf == b"2" => {
|
|||
/* Erase in Line (ED), VT100.*/
|
|||
/* Erase all */
|
|||
for y in 0..terminal_size.1 {
|
|||
for x in 0..terminal_size.0 {
|
|||
grid[(x, y)] = Cell::default();
|
|||
}
|
|||
}
|
|||
debug!("{}", EscCode::from((&(*state), byte)));
|
|||
clear_area(grid, ((0, 0), pos_dec(*terminal_size, (1, 1))));
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'J', State::Csi1(ref buf)) if buf == b"0" => {
|
|||
/* Erase in Display (ED), VT100.*/
|
|||
/* Erase Below (default). */
|
|||
clear_area(
|
|||
grid,
|
|||
(
|
|||
(
|
|||
0,
|
|||
std::cmp::min(
|
|||
cursor.1 + 1 + scroll_region.top,
|
|||
terminal_size.1.saturating_sub(1),
|
|||
),
|
|||
),
|
|||
(
|
|||
terminal_size.0.saturating_sub(1),
|
|||
terminal_size.1.saturating_sub(1),
|
|||
),
|
|||
),
|
|||
);
|
|||
debug!("{}", EscCode::from((&(*state), byte)));
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'J', State::Csi1(ref buf)) if buf == b"1" => {
|
|||
/* Erase in Display (ED), VT100.*/
|
|||
/* Erase Above */
|
|||
clear_area(
|
|||
grid,
|
|||
(
|
|||
(0, 0),
|
|||
(
|
|||
terminal_size.0.saturating_sub(1),
|
|||
cursor.1.saturating_sub(1) + scroll_region.top,
|
|||
),
|
|||
),
|
|||
);
|
|||
debug!("{}", EscCode::from((&(*state), byte)));
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'J', State::Csi1(ref buf)) if buf == b"2" => {
|
|||
/* Erase in Display (ED), VT100.*/
|
|||
/* Erase All */
|
|||
clear_area(grid, ((0, 0), pos_dec(*terminal_size, (1, 1))));
|
|||
debug!("{}", EscCode::from((&(*state), byte)));
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'J', State::Csi1(ref buf)) if buf == b"3" => {
|
|||
/* Erase in Display (ED), VT100.*/
|
|||
/* Erase saved lines (What?) */
|
|||
debug!("ignoring unknown code {}", EscCode::from((&(*state), byte)));
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'X', State::Csi1(ref buf)) => {
|
|||
/* Erase Ps Character(s) (default = 1) (ECH)..*/
|
|||
let ps = unsafe { std::str::from_utf8_unchecked(buf) }
|
|||
.parse::<usize>()
|
|||
.unwrap();
|
|||
|
|||
let mut ctr = 0;
|
|||
let (mut cur_x, mut cur_y) = cursor_val!();
|
|||
while ctr < ps {
|
|||
if cur_x >= terminal_size.0 {
|
|||
cur_y += 1;
|
|||
cur_x = 0;
|
|||
if cur_y >= terminal_size.1 {
|
|||
break;
|
|||
}
|
|||
}
|
|||
grid[(cur_x, cur_y)] = Cell::default();
|
|||
cur_x += 1;
|
|||
ctr += 1;
|
|||
}
|
|||
debug!("Erased {} Character(s)", ps);
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b't', State::Csi1(buf)) => {
|
|||
/* Window manipulation */
|
|||
if buf == b"18" {
|
|||
// Ps = 18 → Report the size of the text area in characters as CSI 8 ; height ; width t
|
|||
debug!("report size of the text area");
|
|||
debug!("got {}", EscCode::from((&(*state), byte)));
|
|||
stdin.write_all(b"\x1b[8;").unwrap();
|
|||
stdin
|
|||
.write_all((terminal_size.1).to_string().as_bytes())
|
|||
.unwrap();
|
|||
stdin.write_all(&[b';']).unwrap();
|
|||
stdin
|
|||
.write_all((terminal_size.0).to_string().as_bytes())
|
|||
.unwrap();
|
|||
stdin.write_all(&[b't']).unwrap();
|
|||
} else {
|
|||
debug!("ignoring unknown code {}", EscCode::from((&(*state), byte)));
|
|||
}
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'n', State::Csi1(_)) => {
|
|||
// Ps = 6 ⇒ Report Cursor Position (CPR) [row;column].
|
|||
// Result is CSI r ; c R
|
|||
debug!("report cursor position");
|
|||
debug!("got {}", EscCode::from((&(*state), byte)));
|
|||
stdin.write_all(&[b'\x1b', b'[']).unwrap();
|
|||
stdin
|
|||
.write_all((cursor.1 + 1).to_string().as_bytes())
|
|||
.unwrap();
|
|||
stdin.write_all(&[b';']).unwrap();
|
|||
stdin
|
|||
.write_all((cursor.0 + 1).to_string().as_bytes())
|
|||
.unwrap();
|
|||
stdin.write_all(&[b'R']).unwrap();
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'A', State::Csi1(buf)) => {
|
|||
// Move cursor up n lines
|
|||
let offset = unsafe { std::str::from_utf8_unchecked(buf) }
|
|||
.parse::<usize>()
|
|||
.unwrap();
|
|||
debug!("cursor up {} times, cursor was: {:?}", offset, cursor);
|
|||
if cursor.1 == scroll_region.top {
|
|||
for y in scroll_region.top..scroll_region.bottom {
|
|||
for x in 0..terminal_size.1 {
|
|||
grid[(x, y)] = grid[(x, y + 1)];
|
|||
}
|
|||
}
|
|||
for x in 0..terminal_size.1 {
|
|||
grid[(x, scroll_region.bottom)] = Cell::default();
|
|||
}
|
|||
} else if cursor.1 >= offset {
|
|||
cursor.1 -= offset;
|
|||
} else {
|
|||
debug!("offset > cursor.1");
|
|||
}
|
|||
debug!("cursor became: {:?}", cursor);
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'B', State::Csi1(buf)) => {
|
|||
// ESC[{buf}B CSI Cursor Down {buf} Times
|
|||
let offset = unsafe { std::str::from_utf8_unchecked(buf) }
|
|||
.parse::<usize>()
|
|||
.unwrap();
|
|||
debug!("cursor down {} times, cursor was: {:?}", offset, cursor);
|
|||
if offset + cursor.1 < terminal_size.1 {
|
|||
cursor.1 += offset;
|
|||
}
|
|||
if scroll_region.top + cursor.1 >= terminal_size.1 {
|
|||
cursor.1 = terminal_size.1.saturating_sub(1);
|
|||
}
|
|||
debug!("cursor became: {:?}", cursor);
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'D', State::Csi1(buf)) => {
|
|||
// ESC[{buf}D CSI Cursor Backward {buf} Times
|
|||
let offset = unsafe { std::str::from_utf8_unchecked(buf) }
|
|||
.parse::<usize>()
|
|||
.unwrap();
|
|||
debug!("cursor backward {} times, cursor was: {:?}", offset, cursor);
|
|||
if offset + cursor.0 < terminal_size.0 {
|
|||
cursor.0 += offset;
|
|||
}
|
|||
debug!("cursor became: {:?}", cursor);
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'E', State::Csi1(buf)) => {
|
|||
// ESC[{buf}E CSI Cursor Next Line {buf} Times
|
|||
let offset = unsafe { std::str::from_utf8_unchecked(buf) }
|
|||
.parse::<usize>()
|
|||
.unwrap();
|
|||
debug!(
|
|||
"cursor next line {} times, cursor was: {:?}",
|
|||
offset, cursor
|
|||
);
|
|||
if offset + cursor.1 < terminal_size.1 {
|
|||
cursor.1 += offset;
|
|||
}
|
|||
if scroll_region.top + cursor.1 >= terminal_size.1 {
|
|||
cursor.1 = terminal_size.1.saturating_sub(1);
|
|||
}
|
|||
debug!("cursor became: {:?}", cursor);
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'G', State::Csi1(buf)) => {
|
|||
// ESC[{buf}G Cursor Character Absolute [column={buf}] (default = [row,1])
|
|||
let new_col = unsafe { std::str::from_utf8_unchecked(buf) }
|
|||
.parse::<usize>()
|
|||
.unwrap();
|
|||
debug!("cursor absolute {}, cursor was: {:?}", new_col, cursor);
|
|||
if new_col < terminal_size.0 {
|
|||
cursor.0 = new_col.saturating_sub(1);
|
|||
} else {
|
|||
debug!(
|
|||
"error: new_cal = {} > terminal.size.0 = {}\nterminal_size = {:?}",
|
|||
new_col, terminal_size.0, terminal_size
|
|||
);
|
|||
}
|
|||
debug!("cursor became: {:?}", cursor);
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'C', State::Csi1(buf)) => {
|
|||
// ESC[{buf}C CSI Cursor Preceding Line {buf} Times
|
|||
let offset = unsafe { std::str::from_utf8_unchecked(buf) }
|
|||
.parse::<usize>()
|
|||
.unwrap();
|
|||
debug!(
|
|||
"cursor preceding {} times, cursor was: {:?}",
|
|||
offset, cursor
|
|||
);
|
|||
if cursor.1 >= offset {
|
|||
cursor.1 -= offset;
|
|||
}
|
|||
if scroll_region.top + cursor.1 >= terminal_size.1 {
|
|||
cursor.1 = terminal_size.1.saturating_sub(1);
|
|||
}
|
|||
debug!("cursor became: {:?}", cursor);
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'P', State::Csi1(buf)) => {
|
|||
// ESC[{buf}P CSI Delete {buf} characters, default = 1
|
|||
let offset = unsafe { std::str::from_utf8_unchecked(buf) }
|
|||
.parse::<usize>()
|
|||
.unwrap();
|
|||
debug!(
|
|||
"Delete {} Character(s) with cursor at {:?} ",
|
|||
offset, cursor
|
|||
);
|
|||
for x in (cursor.0 - std::cmp::min(offset, cursor.0))..cursor.0 {
|
|||
grid[(x, cursor.1 + scroll_region.top)].set_ch(' ');
|
|||
}
|
|||
debug!("cursor became: {:?}", cursor);
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'd', State::Csi1(buf)) => {
|
|||
/* CSI Pm d Line Position Absolute [row] (default = [1,column]) (VPA). */
|
|||
let row = unsafe { std::str::from_utf8_unchecked(buf) }
|
|||
.parse::<usize>()
|
|||
.unwrap();
|
|||
debug!(
|
|||
"Line position absolute row {} with cursor at {:?}",
|
|||
row, cursor
|
|||
);
|
|||
cursor.1 = row.saturating_sub(1);
|
|||
if scroll_region.top + cursor.1 >= terminal_size.1 {
|
|||
cursor.1 = terminal_size.1.saturating_sub(1);
|
|||
}
|
|||
debug!("cursor became: {:?}", cursor);
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b';', State::Csi1(ref mut buf1_p)) => {
|
|||
let buf1 = std::mem::replace(buf1_p, Vec::new());
|
|||
let buf2 = Vec::new();
|
|||
*state = State::Csi2(buf1, buf2);
|
|||
}
|
|||
(b'm', State::Csi1(ref buf1)) => {
|
|||
// Character Attributes.
|
|||
match buf1.as_slice() {
|
|||
b"30" => *fg_color = Color::Black,
|
|||
b"31" => *fg_color = Color::Red,
|
|||
b"32" => *fg_color = Color::Green,
|
|||
b"33" => *fg_color = Color::Yellow,
|
|||
b"34" => *fg_color = Color::Blue,
|
|||
b"35" => *fg_color = Color::Magenta,
|
|||
b"36" => *fg_color = Color::Cyan,
|
|||
b"37" => *fg_color = Color::White,
|
|||
|
|||
b"39" => *fg_color = Color::Default,
|
|||
b"40" => *fg_color = Color::Black,
|
|||
b"41" => *bg_color = Color::Red,
|
|||
b"42" => *bg_color = Color::Green,
|
|||
b"43" => *bg_color = Color::Yellow,
|
|||
b"44" => *bg_color = Color::Blue,
|
|||
b"45" => *bg_color = Color::Magenta,
|
|||
b"46" => *bg_color = Color::Cyan,
|
|||
b"47" => *bg_color = Color::White,
|
|||
|
|||
b"49" => *bg_color = Color::Default,
|
|||
_ => {}
|
|||
}
|
|||
grid[cursor_val!()].set_fg(*fg_color);
|
|||
grid[cursor_val!()].set_bg(*bg_color);
|
|||
*state = State::Normal;
|
|||
}
|
|||
(c, State::Csi1(ref mut buf)) if (c >= b'0' && c <= b'9') || c == b' ' => {
|
|||
buf.push(c);
|
|||
}
|
|||
(_, State::Csi1(_)) => {
|
|||
debug!("ignoring unknown code {}", EscCode::from((&(*state), byte)));
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b';', State::Csi2(ref mut buf1_p, ref mut buf2_p)) => {
|
|||
let buf1 = std::mem::replace(buf1_p, Vec::new());
|
|||
let buf2 = std::mem::replace(buf2_p, Vec::new());
|
|||
let buf3 = Vec::new();
|
|||
*state = State::Csi3(buf1, buf2, buf3);
|
|||
}
|
|||
(b't', State::Csi2(_, _)) => {
|
|||
debug!("ignoring {}", EscCode::from((&(*state), byte)));
|
|||
// Window manipulation, skip it
|
|||
*state = State::Normal;
|
|||
}
|
|||
(b'H', State::Csi2(ref y, ref x)) => {
|
|||
//Cursor Position [row;column] (default = [1,1]) (CUP).
|
|||
let orig_x = unsafe { std::str::from_utf8_unchecked(x) }
|
|||
.parse::<usize>()
|
|||
.unwrap_or(1);
|
|||
let orig_y = unsafe { std::str::from_utf8_unchecked(y) }
|
|||
.parse::<usize>()
|
|||
.unwrap_or(1);
|
|||
debug!("sending {}", EscCode::from((&(*state), byte)),);
|
|||
debug!(
|
|||
"cursor set to ({},{}), cursor was: {:?}",
|
|||
orig_x, orig_y, cursor
|
|||
);
|
|||
if orig_x - 1 <= terminal_size.0 && orig_y - 1 <= terminal_size.1 {
|
|||
cursor.0 = orig_x - 1;
|
|||
cursor.1 = orig_y - 1;
|
|||
} else {
|
|||
debug!(
|
|||
"[error] terminal_size = {:?}, cursor = {:?} but given [{},{}]",
|
|||
terminal_size, cursor, orig_x, orig_y
|
|||
);
|
|||
}
|
|||
if scroll_region.top + cursor.1 >= terminal_size.1 {
|
|||
cursor.1 = terminal_size.1.saturating_sub(1);
|
|||
}
|
|||
debug!("cursor became: {:?}", cursor);
|
|||