890 lines
36 KiB
Rust
890 lines
36 KiB
Rust
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> {
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debug!(waitpid(self.child_pid, Some(WaitPidFlag::WNOHANG),))
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.map_err(|e| MeliError::new(e.to_string()))
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}
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pub fn process_byte(&mut self, byte: u8) {
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let EmbedGrid {
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ref mut cursor,
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ref mut scroll_region,
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ref terminal_size,
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ref mut grid,
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ref mut state,
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ref mut stdin,
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ref mut fg_color,
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ref mut bg_color,
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ref mut prev_fg_color,
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ref mut prev_bg_color,
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ref mut codepoints,
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ref mut show_cursor,
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child_pid: _,
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} = self;
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macro_rules! increase_cursor_x {
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() => {
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if cursor.0 + 1 < terminal_size.0 {
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cursor.0 += 1;
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}
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};
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}
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macro_rules! cursor_x {
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() => {{
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if cursor.0 >= terminal_size.0 {
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cursor.0 = terminal_size.0.saturating_sub(1);
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}
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cursor.0
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}};
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}
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macro_rules! cursor_y {
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() => {
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std::cmp::min(
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cursor.1 + scroll_region.top,
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terminal_size.1.saturating_sub(1),
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)
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};
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}
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macro_rules! cursor_val {
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() => {
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(cursor_x!(), cursor_y!())
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};
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}
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let mut state = state;
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match (byte, &mut state) {
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(b'\x1b', State::Normal) => {
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*state = State::ExpectingControlChar;
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}
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(b']', State::ExpectingControlChar) => {
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let buf1 = Vec::new();
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*state = State::Osc1(buf1);
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}
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(b'[', State::ExpectingControlChar) => {
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*state = State::Csi;
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}
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(b'(', State::ExpectingControlChar) => {
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*state = State::G0;
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}
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(b'J', State::ExpectingControlChar) => {
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// ESCJ Erase from the cursor to the end of the screen
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debug!("sending {}", EscCode::from((&(*state), byte)));
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debug!("erasing from {:?} to {:?}", cursor, terminal_size);
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for y in cursor.1..terminal_size.1 {
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for x in cursor.0..terminal_size.0 {
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grid[(x, y)] = Cell::default();
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}
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}
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*state = State::Normal;
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}
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(b'K', State::ExpectingControlChar) => {
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// ESCK Erase from the cursor to the end of the line
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debug!("sending {}", EscCode::from((&(*state), byte)));
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for x in cursor.0..terminal_size.0 {
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grid[(x, cursor.1)] = Cell::default();
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}
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*state = State::Normal;
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}
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(_, State::ExpectingControlChar) => {
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debug!(
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"unrecognised: byte is {} and state is {:?}",
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byte as char, state
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);
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*state = State::Normal;
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}
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(b'?', State::Csi) => {
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let buf1 = Vec::new();
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*state = State::CsiQ(buf1);
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}
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/* OSC stuff */
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(c, State::Osc1(ref mut buf)) if (c >= b'0' && c <= b'9') || c == b'?' => {
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buf.push(c);
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}
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(b';', State::Osc1(ref mut buf1_p)) => {
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let buf1 = std::mem::replace(buf1_p, Vec::new());
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let buf2 = Vec::new();
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*state = State::Osc2(buf1, buf2);
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}
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(c, State::Osc2(_, ref mut buf)) if (c >= b'0' && c <= b'9') || c == b'?' => {
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buf.push(c);
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}
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(_, State::Osc1(_)) => {
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debug!("ignoring unknown code {}", EscCode::from((&(*state), byte)));
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*state = State::Normal;
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}
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(_, State::Osc2(_, _)) => {
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debug!("ignoring unknown code {}", EscCode::from((&(*state), byte)));
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*state = State::Normal;
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}
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/* Normal */
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(b'\r', State::Normal) => {
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debug!("carriage return x-> 0, cursor was: {:?}", cursor);
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cursor.0 = 0;
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debug!("cursor became: {:?}", cursor);
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}
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(b'\n', State::Normal) => {
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//debug!("setting cell {:?} char '{}'", cursor, c as char);
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debug!("newline y-> y+1, cursor was: {:?}", cursor);
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if cursor.1 + 1 < terminal_size.1 {
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cursor.1 += 1;
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}
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debug!("cursor became: {:?}", cursor);
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}
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(b'', State::Normal) => {
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debug!("Visual bell ^G, ignoring {:?}", cursor);
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}
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(0x08, State::Normal) => {
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/* Backspace */
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debug!("backspace x-> x-1, cursor was: {:?}", cursor);
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if cursor.0 > 0 {
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cursor.0 -= 1;
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}
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debug!("cursor became: {:?}", cursor);
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}
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(c, State::Normal) => {
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/* Character to be printed. */
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if *codepoints == CodepointBuf::None && c & 0x80 == 0 {
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/* This is a one byte char */
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grid[cursor_val!()].set_ch(c as char);
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} else {
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match codepoints {
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CodepointBuf::None if c & 0b1110_0000 == 0b1100_0000 => {
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*codepoints = CodepointBuf::TwoCodepoints(vec![c]);
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}
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CodepointBuf::None if c & 0b1111_0000 == 0b1110_0000 => {
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*codepoints = CodepointBuf::ThreeCodepoints(vec![c]);
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}
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CodepointBuf::None if c & 0b1111_1000 == 0b1111_0000 => {
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*codepoints = CodepointBuf::FourCodepoints(vec![c]);
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}
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CodepointBuf::TwoCodepoints(buf) => {
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grid[cursor_val!()].set_ch(
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unsafe { std::str::from_utf8_unchecked(&[buf[0], c]) }
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.chars()
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.next()
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.unwrap(),
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);
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*codepoints = CodepointBuf::None;
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}
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CodepointBuf::ThreeCodepoints(buf) if buf.len() == 2 => {
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grid[cursor_val!()].set_ch(
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unsafe { std::str::from_utf8_unchecked(&[buf[0], buf[1], c]) }
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.chars()
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.next()
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.unwrap(),
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);
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*codepoints = CodepointBuf::None;
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}
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CodepointBuf::ThreeCodepoints(buf) => {
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buf.push(c);
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return;
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}
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CodepointBuf::FourCodepoints(buf) if buf.len() == 3 => {
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grid[cursor_val!()].set_ch(
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unsafe {
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std::str::from_utf8_unchecked(&[buf[0], buf[1], buf[2], c])
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}
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.chars()
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.next()
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.unwrap(),
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);
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*codepoints = CodepointBuf::None;
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}
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CodepointBuf::FourCodepoints(buf) => {
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buf.push(c);
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return;
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}
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_ => {
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debug!(
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"invalid utf8 sequence: codepoints = {:?} and c={}",
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codepoints, c
|
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);
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*codepoints = CodepointBuf::None;
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}
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}
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}
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grid[cursor_val!()].set_fg(*fg_color);
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grid[cursor_val!()].set_bg(*bg_color);
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increase_cursor_x!();
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}
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(b'u', State::Csi) => {
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/* restore cursor */
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debug!("restore cursor {}", EscCode::from((&(*state), byte)));
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*show_cursor = true;
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*state = State::Normal;
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}
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(b'm', State::Csi) => {
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/* Reset character Attributes (SGR). Ps = 0 -> Normal (default), VT100 */
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debug!("{}", EscCode::from((&(*state), byte)));
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*fg_color = Color::Default;
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*bg_color = Color::Default;
|
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grid[cursor_val!()].set_fg(Color::Default);
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grid[cursor_val!()].set_bg(Color::Default);
|
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*state = State::Normal;
|
||
}
|
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(b'H', State::Csi) => {
|
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/* move cursor to (1,1) */
|
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debug!("{}", EscCode::from((&(*state), byte)),);
|
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debug!("move cursor to (1,1) cursor before: {:?}", *cursor);
|
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*cursor = (0, 0);
|
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debug!("cursor after: {:?}", *cursor);
|
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*state = State::Normal;
|
||
}
|
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(b'P', State::Csi) => {
|
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/* delete one character */
|
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debug!("{}", EscCode::from((&(*state), byte)),);
|
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grid[cursor_val!()].set_ch(' ');
|
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*state = State::Normal;
|
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}
|
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(b'C', State::Csi) => {
|
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// ESC[C CSI Cursor Forward one Time
|
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debug!("cursor forward one time, cursor was: {:?}", cursor);
|
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cursor.0 = std::cmp::min(cursor.0 + 1, terminal_size.0.saturating_sub(1));
|
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debug!("cursor became: {:?}", cursor);
|
||
*state = State::Normal;
|
||
}
|
||
/* CSI ? stuff */
|
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(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() {
|
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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);
|
||
*state = State::Normal;
|
||
}
|
||
(c, State::Csi2(_, ref mut buf)) if c >= b'0' && c <= b'9' => {
|
||
buf.push(c);
|
||
}
|
||
(b'r', State::Csi2(ref top, ref bottom)) => {
|
||
/* CSI Ps ; Ps r Set Scrolling Region [top;bottom] (default = full size of window) (DECSTBM). */
|
||
let top = unsafe { std::str::from_utf8_unchecked(top) }
|
||
.parse::<usize>()
|
||
.unwrap_or(1);
|
||
let bottom = unsafe { std::str::from_utf8_unchecked(bottom) }
|
||
.parse::<usize>()
|
||
.unwrap_or(1);
|
||
|
||
if bottom > top {
|
||
scroll_region.top = top - 1;
|
||
scroll_region.bottom = bottom - 1;
|
||
*cursor = (0, 0);
|
||
}
|
||
debug!("set scrolling region to {:?}", scroll_region);
|
||
*state = State::Normal;
|
||
}
|
||
(_, State::Csi2(_, _)) => {
|
||
debug!("ignoring unknown code {}", EscCode::from((&(*state), byte)));
|
||
*state = State::Normal;
|
||
}
|
||
(b't', State::Csi3(_, _, _)) => {
|
||
debug!("ignoring {}", EscCode::from((&(*state), byte)));
|
||
// Window manipulation, skip it
|
||
*state = State::Normal;
|
||
}
|
||
|
||
(c, State::Csi3(_, _, ref mut buf)) if c >= b'0' && c <= b'9' => {
|
||
buf.push(c);
|
||
}
|
||
(b'm', State::Csi3(ref buf1, ref buf2, ref buf3)) if buf1 == b"38" && buf2 == b"5" => {
|
||
/* Set character attributes | foreground color */
|
||
*fg_color = if let Ok(byte) =
|
||
u8::from_str_radix(unsafe { std::str::from_utf8_unchecked(buf3) }, 10)
|
||
{
|
||
debug!("parsed buf as {}", byte);
|
||
Color::Byte(byte)
|
||
} else {
|
||
Color::Default
|
||
};
|
||
grid[cursor_val!()].set_fg(*fg_color);
|
||
debug!("{}", EscCode::from((&(*state), byte)));
|
||
*state = State::Normal;
|
||
}
|
||
(b'm', State::Csi3(ref buf1, ref buf2, ref buf3)) if buf1 == b"48" && buf2 == b"5" => {
|
||
/* Set character attributes | background color */
|
||
*bg_color = if let Ok(byte) =
|
||
u8::from_str_radix(unsafe { std::str::from_utf8_unchecked(buf3) }, 10)
|
||
{
|
||
debug!("parsed buf as {}", byte);
|
||
Color::Byte(byte)
|
||
} else {
|
||
Color::Default
|
||
};
|
||
grid[cursor_val!()].set_bg(*bg_color);
|
||
debug!("{}", EscCode::from((&(*state), byte)));
|
||
*state = State::Normal;
|
||
}
|
||
(_, State::Csi3(_, _, _)) => {
|
||
debug!("ignoring unknown code {}", EscCode::from((&(*state), byte)));
|
||
*state = State::Normal;
|
||
}
|
||
/* other stuff */
|
||
(_, State::G0) => {
|
||
debug!("ignoring {}", EscCode::from((&(*state), byte)));
|
||
*state = State::Normal;
|
||
}
|
||
}
|
||
}
|
||
}
|