1854 lines
60 KiB
Rust
1854 lines
60 KiB
Rust
//! ANSI Terminal Stream Parsing.
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use std::convert::TryFrom;
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use std::fmt::Write;
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use std::time::{Duration, Instant};
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use std::{iter, str};
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use log::{debug, trace};
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use serde::{Deserialize, Serialize};
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use vte::{Params, ParamsIter};
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use alacritty_config_derive::ConfigDeserialize;
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use crate::index::{Column, Line};
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use crate::term::cell::Hyperlink;
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use crate::term::color::Rgb;
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/// Maximum time before a synchronized update is aborted.
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const SYNC_UPDATE_TIMEOUT: Duration = Duration::from_millis(150);
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/// Maximum number of bytes read in one synchronized update (2MiB).
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const SYNC_BUFFER_SIZE: usize = 0x20_0000;
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/// Number of bytes in the synchronized update DCS sequence before the passthrough parameters.
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const SYNC_ESCAPE_START_LEN: usize = 5;
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/// Start of the DCS sequence for beginning synchronized updates.
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const SYNC_START_ESCAPE_START: [u8; SYNC_ESCAPE_START_LEN] = [b'\x1b', b'P', b'=', b'1', b's'];
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/// Start of the DCS sequence for terminating synchronized updates.
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const SYNC_END_ESCAPE_START: [u8; SYNC_ESCAPE_START_LEN] = [b'\x1b', b'P', b'=', b'2', b's'];
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/// Parse colors in XParseColor format.
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fn xparse_color(color: &[u8]) -> Option<Rgb> {
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if !color.is_empty() && color[0] == b'#' {
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parse_legacy_color(&color[1..])
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} else if color.len() >= 4 && &color[..4] == b"rgb:" {
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parse_rgb_color(&color[4..])
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} else {
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None
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}
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}
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/// Parse colors in `rgb:r(rrr)/g(ggg)/b(bbb)` format.
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fn parse_rgb_color(color: &[u8]) -> Option<Rgb> {
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let colors = str::from_utf8(color).ok()?.split('/').collect::<Vec<_>>();
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if colors.len() != 3 {
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return None;
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}
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// Scale values instead of filling with `0`s.
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let scale = |input: &str| {
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if input.len() > 4 {
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None
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} else {
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let max = u32::pow(16, input.len() as u32) - 1;
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let value = u32::from_str_radix(input, 16).ok()?;
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Some((255 * value / max) as u8)
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}
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};
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Some(Rgb { r: scale(colors[0])?, g: scale(colors[1])?, b: scale(colors[2])? })
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}
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/// Parse colors in `#r(rrr)g(ggg)b(bbb)` format.
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fn parse_legacy_color(color: &[u8]) -> Option<Rgb> {
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let item_len = color.len() / 3;
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// Truncate/Fill to two byte precision.
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let color_from_slice = |slice: &[u8]| {
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let col = usize::from_str_radix(str::from_utf8(slice).ok()?, 16).ok()? << 4;
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Some((col >> (4 * slice.len().saturating_sub(1))) as u8)
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};
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Some(Rgb {
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r: color_from_slice(&color[0..item_len])?,
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g: color_from_slice(&color[item_len..item_len * 2])?,
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b: color_from_slice(&color[item_len * 2..])?,
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})
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}
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fn parse_number(input: &[u8]) -> Option<u8> {
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if input.is_empty() {
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return None;
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}
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let mut num: u8 = 0;
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for c in input {
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let c = *c as char;
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if let Some(digit) = c.to_digit(10) {
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num = match num.checked_mul(10).and_then(|v| v.checked_add(digit as u8)) {
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Some(v) => v,
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None => return None,
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}
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} else {
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return None;
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}
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}
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Some(num)
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}
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/// Internal state for VTE processor.
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#[derive(Debug, Default)]
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struct ProcessorState {
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/// Last processed character for repetition.
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preceding_char: Option<char>,
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/// DCS sequence waiting for termination.
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dcs: Option<Dcs>,
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/// State for synchronized terminal updates.
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sync_state: SyncState,
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}
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#[derive(Debug)]
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struct SyncState {
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/// Expiration time of the synchronized update.
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timeout: Option<Instant>,
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/// Sync DCS waiting for termination sequence.
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pending_dcs: Option<Dcs>,
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/// Bytes read during the synchronized update.
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buffer: Vec<u8>,
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}
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impl Default for SyncState {
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fn default() -> Self {
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Self { buffer: Vec::with_capacity(SYNC_BUFFER_SIZE), pending_dcs: None, timeout: None }
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}
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}
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/// Pending DCS sequence.
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#[derive(Debug)]
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enum Dcs {
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/// Begin of the synchronized update.
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SyncStart,
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/// End of the synchronized update.
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SyncEnd,
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}
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/// The processor wraps a `vte::Parser` to ultimately call methods on a Handler.
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#[derive(Default)]
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pub struct Processor {
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state: ProcessorState,
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parser: vte::Parser,
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}
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impl Processor {
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#[inline]
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pub fn new() -> Self {
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Self::default()
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}
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/// Process a new byte from the PTY.
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#[inline]
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pub fn advance<H>(&mut self, handler: &mut H, byte: u8)
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where
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H: Handler,
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{
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if self.state.sync_state.timeout.is_none() {
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let mut performer = Performer::new(&mut self.state, handler);
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self.parser.advance(&mut performer, byte);
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} else {
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self.advance_sync(handler, byte);
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}
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}
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/// End a synchronized update.
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pub fn stop_sync<H>(&mut self, handler: &mut H)
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where
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H: Handler,
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{
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// Process all synchronized bytes.
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for i in 0..self.state.sync_state.buffer.len() {
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let byte = self.state.sync_state.buffer[i];
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let mut performer = Performer::new(&mut self.state, handler);
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self.parser.advance(&mut performer, byte);
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}
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// Resetting state after processing makes sure we don't interpret buffered sync escapes.
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self.state.sync_state.buffer.clear();
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self.state.sync_state.timeout = None;
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}
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/// Synchronized update expiration time.
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#[inline]
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pub fn sync_timeout(&self) -> Option<&Instant> {
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self.state.sync_state.timeout.as_ref()
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}
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/// Number of bytes in the synchronization buffer.
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#[inline]
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pub fn sync_bytes_count(&self) -> usize {
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self.state.sync_state.buffer.len()
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}
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/// Process a new byte during a synchronized update.
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#[cold]
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fn advance_sync<H>(&mut self, handler: &mut H, byte: u8)
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where
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H: Handler,
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{
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self.state.sync_state.buffer.push(byte);
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// Handle sync DCS escape sequences.
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match self.state.sync_state.pending_dcs {
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Some(_) => self.advance_sync_dcs_end(handler, byte),
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None => self.advance_sync_dcs_start(),
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}
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}
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/// Find the start of sync DCS sequences.
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fn advance_sync_dcs_start(&mut self) {
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// Get the last few bytes for comparison.
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let len = self.state.sync_state.buffer.len();
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let offset = len.saturating_sub(SYNC_ESCAPE_START_LEN);
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let end = &self.state.sync_state.buffer[offset..];
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// Check for extension/termination of the synchronized update.
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if end == SYNC_START_ESCAPE_START {
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self.state.sync_state.pending_dcs = Some(Dcs::SyncStart);
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} else if end == SYNC_END_ESCAPE_START || len >= SYNC_BUFFER_SIZE - 1 {
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self.state.sync_state.pending_dcs = Some(Dcs::SyncEnd);
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}
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}
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/// Parse the DCS termination sequence for synchronized updates.
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fn advance_sync_dcs_end<H>(&mut self, handler: &mut H, byte: u8)
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where
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H: Handler,
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{
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match byte {
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// Ignore DCS passthrough characters.
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0x00..=0x17 | 0x19 | 0x1c..=0x7f | 0xa0..=0xff => (),
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// Cancel the DCS sequence.
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0x18 | 0x1a | 0x80..=0x9f => self.state.sync_state.pending_dcs = None,
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// Dispatch on ESC.
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0x1b => match self.state.sync_state.pending_dcs.take() {
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Some(Dcs::SyncStart) => {
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self.state.sync_state.timeout = Some(Instant::now() + SYNC_UPDATE_TIMEOUT);
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},
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Some(Dcs::SyncEnd) => self.stop_sync(handler),
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None => (),
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},
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}
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}
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}
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/// Helper type that implements `vte::Perform`.
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///
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/// Processor creates a Performer when running advance and passes the Performer
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/// to `vte::Parser`.
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struct Performer<'a, H: Handler> {
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state: &'a mut ProcessorState,
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handler: &'a mut H,
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}
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impl<'a, H: Handler + 'a> Performer<'a, H> {
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/// Create a performer.
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#[inline]
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pub fn new<'b>(state: &'b mut ProcessorState, handler: &'b mut H) -> Performer<'b, H> {
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Performer { state, handler }
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}
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}
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/// Type that handles actions from the parser.
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///
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/// XXX Should probably not provide default impls for everything, but it makes
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/// writing specific handler impls for tests far easier.
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pub trait Handler {
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/// OSC to set window title.
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fn set_title(&mut self, _: Option<String>) {}
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/// Set the cursor style.
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fn set_cursor_style(&mut self, _: Option<CursorStyle>) {}
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/// Set the cursor shape.
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fn set_cursor_shape(&mut self, _shape: CursorShape) {}
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/// A character to be displayed.
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fn input(&mut self, _c: char) {}
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/// Set cursor to position.
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fn goto(&mut self, _: Line, _: Column) {}
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/// Set cursor to specific row.
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fn goto_line(&mut self, _: Line) {}
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/// Set cursor to specific column.
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fn goto_col(&mut self, _: Column) {}
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/// Insert blank characters in current line starting from cursor.
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fn insert_blank(&mut self, _: usize) {}
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/// Move cursor up `rows`.
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fn move_up(&mut self, _: usize) {}
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/// Move cursor down `rows`.
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fn move_down(&mut self, _: usize) {}
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/// Identify the terminal (should write back to the pty stream).
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fn identify_terminal(&mut self, _intermediate: Option<char>) {}
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/// Report device status.
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fn device_status(&mut self, _: usize) {}
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/// Move cursor forward `cols`.
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fn move_forward(&mut self, _: Column) {}
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/// Move cursor backward `cols`.
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fn move_backward(&mut self, _: Column) {}
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/// Move cursor down `rows` and set to column 1.
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fn move_down_and_cr(&mut self, _: usize) {}
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/// Move cursor up `rows` and set to column 1.
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fn move_up_and_cr(&mut self, _: usize) {}
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/// Put `count` tabs.
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fn put_tab(&mut self, _count: u16) {}
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/// Backspace `count` characters.
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fn backspace(&mut self) {}
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/// Carriage return.
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fn carriage_return(&mut self) {}
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/// Linefeed.
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fn linefeed(&mut self) {}
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/// Ring the bell.
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///
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/// Hopefully this is never implemented.
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fn bell(&mut self) {}
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/// Substitute char under cursor.
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fn substitute(&mut self) {}
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/// Newline.
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fn newline(&mut self) {}
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/// Set current position as a tabstop.
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fn set_horizontal_tabstop(&mut self) {}
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/// Scroll up `rows` rows.
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fn scroll_up(&mut self, _: usize) {}
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/// Scroll down `rows` rows.
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fn scroll_down(&mut self, _: usize) {}
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/// Insert `count` blank lines.
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fn insert_blank_lines(&mut self, _: usize) {}
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/// Delete `count` lines.
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fn delete_lines(&mut self, _: usize) {}
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/// Erase `count` chars in current line following cursor.
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///
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/// Erase means resetting to the default state (default colors, no content,
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/// no mode flags).
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fn erase_chars(&mut self, _: Column) {}
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/// Delete `count` chars.
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///
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/// Deleting a character is like the delete key on the keyboard - everything
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/// to the right of the deleted things is shifted left.
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fn delete_chars(&mut self, _: usize) {}
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/// Move backward `count` tabs.
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fn move_backward_tabs(&mut self, _count: u16) {}
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/// Move forward `count` tabs.
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fn move_forward_tabs(&mut self, _count: u16) {}
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/// Save current cursor position.
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fn save_cursor_position(&mut self) {}
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/// Restore cursor position.
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fn restore_cursor_position(&mut self) {}
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/// Clear current line.
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fn clear_line(&mut self, _mode: LineClearMode) {}
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/// Clear screen.
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fn clear_screen(&mut self, _mode: ClearMode) {}
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/// Clear tab stops.
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fn clear_tabs(&mut self, _mode: TabulationClearMode) {}
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/// Reset terminal state.
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fn reset_state(&mut self) {}
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/// Reverse Index.
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///
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/// Move the active position to the same horizontal position on the
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/// preceding line. If the active position is at the top margin, a scroll
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/// down is performed.
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fn reverse_index(&mut self) {}
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/// Set a terminal attribute.
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fn terminal_attribute(&mut self, _attr: Attr) {}
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/// Set mode.
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fn set_mode(&mut self, _mode: Mode) {}
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/// Unset mode.
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fn unset_mode(&mut self, _: Mode) {}
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/// DECSTBM - Set the terminal scrolling region.
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fn set_scrolling_region(&mut self, _top: usize, _bottom: Option<usize>) {}
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/// DECKPAM - Set keypad to applications mode (ESCape instead of digits).
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fn set_keypad_application_mode(&mut self) {}
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/// DECKPNM - Set keypad to numeric mode (digits instead of ESCape seq).
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fn unset_keypad_application_mode(&mut self) {}
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/// Set one of the graphic character sets, G0 to G3, as the active charset.
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///
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/// 'Invoke' one of G0 to G3 in the GL area. Also referred to as shift in,
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/// shift out and locking shift depending on the set being activated.
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fn set_active_charset(&mut self, _: CharsetIndex) {}
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/// Assign a graphic character set to G0, G1, G2 or G3.
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///
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/// 'Designate' a graphic character set as one of G0 to G3, so that it can
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/// later be 'invoked' by `set_active_charset`.
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fn configure_charset(&mut self, _: CharsetIndex, _: StandardCharset) {}
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/// Set an indexed color value.
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fn set_color(&mut self, _: usize, _: Rgb) {}
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/// Respond to a color query escape sequence.
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fn dynamic_color_sequence(&mut self, _: String, _: usize, _: &str) {}
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/// Reset an indexed color to original value.
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fn reset_color(&mut self, _: usize) {}
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/// Store data into clipboard.
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fn clipboard_store(&mut self, _: u8, _: &[u8]) {}
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/// Load data from clipboard.
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fn clipboard_load(&mut self, _: u8, _: &str) {}
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/// Run the decaln routine.
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fn decaln(&mut self) {}
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/// Push a title onto the stack.
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fn push_title(&mut self) {}
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/// Pop the last title from the stack.
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fn pop_title(&mut self) {}
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/// Report text area size in pixels.
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fn text_area_size_pixels(&mut self) {}
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/// Report text area size in characters.
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fn text_area_size_chars(&mut self) {}
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/// Set hyperlink.
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fn set_hyperlink(&mut self, _: Option<Hyperlink>) {}
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}
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/// Terminal cursor configuration.
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#[derive(ConfigDeserialize, Default, Debug, Eq, PartialEq, Copy, Clone, Hash)]
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pub struct CursorStyle {
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pub shape: CursorShape,
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pub blinking: bool,
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}
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/// Terminal cursor shape.
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#[derive(ConfigDeserialize, Debug, Eq, PartialEq, Copy, Clone, Hash)]
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pub enum CursorShape {
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/// Cursor is a block like `▒`.
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Block,
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/// Cursor is an underscore like `_`.
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Underline,
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/// Cursor is a vertical bar `⎸`.
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Beam,
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/// Cursor is a box like `☐`.
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#[config(skip)]
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HollowBlock,
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/// Invisible cursor.
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#[config(skip)]
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Hidden,
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}
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impl Default for CursorShape {
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fn default() -> CursorShape {
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CursorShape::Block
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}
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}
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/// Terminal modes.
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#[derive(Debug, Eq, PartialEq)]
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pub enum Mode {
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/// ?1
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CursorKeys = 1,
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/// Select 80 or 132 columns per page (DECCOLM).
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///
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/// CSI ? 3 h -> set 132 column font.
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/// CSI ? 3 l -> reset 80 column font.
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///
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/// Additionally,
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///
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/// * set margins to default positions
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/// * erases all data in page memory
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/// * resets DECLRMM to unavailable
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/// * clears data from the status line (if set to host-writable)
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ColumnMode = 3,
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/// IRM Insert Mode.
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///
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/// NB should be part of non-private mode enum.
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///
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/// * `CSI 4 h` change to insert mode
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/// * `CSI 4 l` reset to replacement mode
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Insert = 4,
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/// ?6
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Origin = 6,
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/// ?7
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LineWrap = 7,
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/// ?12
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BlinkingCursor = 12,
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/// 20
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///
|
|
/// NB This is actually a private mode. We should consider adding a second
|
|
/// enumeration for public/private modesets.
|
|
LineFeedNewLine = 20,
|
|
/// ?25
|
|
ShowCursor = 25,
|
|
/// ?1000
|
|
ReportMouseClicks = 1000,
|
|
/// ?1002
|
|
ReportCellMouseMotion = 1002,
|
|
/// ?1003
|
|
ReportAllMouseMotion = 1003,
|
|
/// ?1004
|
|
ReportFocusInOut = 1004,
|
|
/// ?1005
|
|
Utf8Mouse = 1005,
|
|
/// ?1006
|
|
SgrMouse = 1006,
|
|
/// ?1007
|
|
AlternateScroll = 1007,
|
|
/// ?1042
|
|
UrgencyHints = 1042,
|
|
/// ?1049
|
|
SwapScreenAndSetRestoreCursor = 1049,
|
|
/// ?2004
|
|
BracketedPaste = 2004,
|
|
}
|
|
|
|
impl Mode {
|
|
/// Create mode from a primitive.
|
|
pub fn from_primitive(intermediate: Option<&u8>, num: u16) -> Option<Mode> {
|
|
let private = match intermediate {
|
|
Some(b'?') => true,
|
|
None => false,
|
|
_ => return None,
|
|
};
|
|
|
|
if private {
|
|
Some(match num {
|
|
1 => Mode::CursorKeys,
|
|
3 => Mode::ColumnMode,
|
|
6 => Mode::Origin,
|
|
7 => Mode::LineWrap,
|
|
12 => Mode::BlinkingCursor,
|
|
25 => Mode::ShowCursor,
|
|
1000 => Mode::ReportMouseClicks,
|
|
1002 => Mode::ReportCellMouseMotion,
|
|
1003 => Mode::ReportAllMouseMotion,
|
|
1004 => Mode::ReportFocusInOut,
|
|
1005 => Mode::Utf8Mouse,
|
|
1006 => Mode::SgrMouse,
|
|
1007 => Mode::AlternateScroll,
|
|
1042 => Mode::UrgencyHints,
|
|
1049 => Mode::SwapScreenAndSetRestoreCursor,
|
|
2004 => Mode::BracketedPaste,
|
|
_ => {
|
|
trace!("[unimplemented] primitive mode: {}", num);
|
|
return None;
|
|
},
|
|
})
|
|
} else {
|
|
Some(match num {
|
|
4 => Mode::Insert,
|
|
20 => Mode::LineFeedNewLine,
|
|
_ => return None,
|
|
})
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Mode for clearing line.
|
|
///
|
|
/// Relative to cursor.
|
|
#[derive(Debug)]
|
|
pub enum LineClearMode {
|
|
/// Clear right of cursor.
|
|
Right,
|
|
/// Clear left of cursor.
|
|
Left,
|
|
/// Clear entire line.
|
|
All,
|
|
}
|
|
|
|
/// Mode for clearing terminal.
|
|
///
|
|
/// Relative to cursor.
|
|
#[derive(Debug)]
|
|
pub enum ClearMode {
|
|
/// Clear below cursor.
|
|
Below,
|
|
/// Clear above cursor.
|
|
Above,
|
|
/// Clear entire terminal.
|
|
All,
|
|
/// Clear 'saved' lines (scrollback).
|
|
Saved,
|
|
}
|
|
|
|
/// Mode for clearing tab stops.
|
|
#[derive(Debug)]
|
|
pub enum TabulationClearMode {
|
|
/// Clear stop under cursor.
|
|
Current,
|
|
/// Clear all stops.
|
|
All,
|
|
}
|
|
|
|
/// Standard colors.
|
|
///
|
|
/// The order here matters since the enum should be castable to a `usize` for
|
|
/// indexing a color list.
|
|
#[derive(Serialize, Deserialize, Debug, Copy, Clone, Eq, PartialEq, PartialOrd, Ord)]
|
|
pub enum NamedColor {
|
|
/// Black.
|
|
Black = 0,
|
|
/// Red.
|
|
Red,
|
|
/// Green.
|
|
Green,
|
|
/// Yellow.
|
|
Yellow,
|
|
/// Blue.
|
|
Blue,
|
|
/// Magenta.
|
|
Magenta,
|
|
/// Cyan.
|
|
Cyan,
|
|
/// White.
|
|
White,
|
|
/// Bright black.
|
|
BrightBlack,
|
|
/// Bright red.
|
|
BrightRed,
|
|
/// Bright green.
|
|
BrightGreen,
|
|
/// Bright yellow.
|
|
BrightYellow,
|
|
/// Bright blue.
|
|
BrightBlue,
|
|
/// Bright magenta.
|
|
BrightMagenta,
|
|
/// Bright cyan.
|
|
BrightCyan,
|
|
/// Bright white.
|
|
BrightWhite,
|
|
/// The foreground color.
|
|
Foreground = 256,
|
|
/// The background color.
|
|
Background,
|
|
/// Color for the cursor itself.
|
|
Cursor,
|
|
/// Dim black.
|
|
DimBlack,
|
|
/// Dim red.
|
|
DimRed,
|
|
/// Dim green.
|
|
DimGreen,
|
|
/// Dim yellow.
|
|
DimYellow,
|
|
/// Dim blue.
|
|
DimBlue,
|
|
/// Dim magenta.
|
|
DimMagenta,
|
|
/// Dim cyan.
|
|
DimCyan,
|
|
/// Dim white.
|
|
DimWhite,
|
|
/// The bright foreground color.
|
|
BrightForeground,
|
|
/// Dim foreground.
|
|
DimForeground,
|
|
}
|
|
|
|
impl NamedColor {
|
|
#[must_use]
|
|
pub fn to_bright(self) -> Self {
|
|
match self {
|
|
NamedColor::Foreground => NamedColor::BrightForeground,
|
|
NamedColor::Black => NamedColor::BrightBlack,
|
|
NamedColor::Red => NamedColor::BrightRed,
|
|
NamedColor::Green => NamedColor::BrightGreen,
|
|
NamedColor::Yellow => NamedColor::BrightYellow,
|
|
NamedColor::Blue => NamedColor::BrightBlue,
|
|
NamedColor::Magenta => NamedColor::BrightMagenta,
|
|
NamedColor::Cyan => NamedColor::BrightCyan,
|
|
NamedColor::White => NamedColor::BrightWhite,
|
|
NamedColor::DimForeground => NamedColor::Foreground,
|
|
NamedColor::DimBlack => NamedColor::Black,
|
|
NamedColor::DimRed => NamedColor::Red,
|
|
NamedColor::DimGreen => NamedColor::Green,
|
|
NamedColor::DimYellow => NamedColor::Yellow,
|
|
NamedColor::DimBlue => NamedColor::Blue,
|
|
NamedColor::DimMagenta => NamedColor::Magenta,
|
|
NamedColor::DimCyan => NamedColor::Cyan,
|
|
NamedColor::DimWhite => NamedColor::White,
|
|
val => val,
|
|
}
|
|
}
|
|
|
|
#[must_use]
|
|
pub fn to_dim(self) -> Self {
|
|
match self {
|
|
NamedColor::Black => NamedColor::DimBlack,
|
|
NamedColor::Red => NamedColor::DimRed,
|
|
NamedColor::Green => NamedColor::DimGreen,
|
|
NamedColor::Yellow => NamedColor::DimYellow,
|
|
NamedColor::Blue => NamedColor::DimBlue,
|
|
NamedColor::Magenta => NamedColor::DimMagenta,
|
|
NamedColor::Cyan => NamedColor::DimCyan,
|
|
NamedColor::White => NamedColor::DimWhite,
|
|
NamedColor::Foreground => NamedColor::DimForeground,
|
|
NamedColor::BrightBlack => NamedColor::Black,
|
|
NamedColor::BrightRed => NamedColor::Red,
|
|
NamedColor::BrightGreen => NamedColor::Green,
|
|
NamedColor::BrightYellow => NamedColor::Yellow,
|
|
NamedColor::BrightBlue => NamedColor::Blue,
|
|
NamedColor::BrightMagenta => NamedColor::Magenta,
|
|
NamedColor::BrightCyan => NamedColor::Cyan,
|
|
NamedColor::BrightWhite => NamedColor::White,
|
|
NamedColor::BrightForeground => NamedColor::Foreground,
|
|
val => val,
|
|
}
|
|
}
|
|
}
|
|
|
|
#[derive(Serialize, Deserialize, Debug, Clone, Copy, PartialEq, Eq)]
|
|
pub enum Color {
|
|
Named(NamedColor),
|
|
Spec(Rgb),
|
|
Indexed(u8),
|
|
}
|
|
|
|
/// Terminal character attributes.
|
|
#[derive(Debug, Eq, PartialEq)]
|
|
pub enum Attr {
|
|
/// Clear all special abilities.
|
|
Reset,
|
|
/// Bold text.
|
|
Bold,
|
|
/// Dim or secondary color.
|
|
Dim,
|
|
/// Italic text.
|
|
Italic,
|
|
/// Underline text.
|
|
Underline,
|
|
/// Underlined twice.
|
|
DoubleUnderline,
|
|
/// Undercurled text.
|
|
Undercurl,
|
|
/// Dotted underlined text.
|
|
DottedUnderline,
|
|
/// Dashed underlined text.
|
|
DashedUnderline,
|
|
/// Blink cursor slowly.
|
|
BlinkSlow,
|
|
/// Blink cursor fast.
|
|
BlinkFast,
|
|
/// Invert colors.
|
|
Reverse,
|
|
/// Do not display characters.
|
|
Hidden,
|
|
/// Strikeout text.
|
|
Strike,
|
|
/// Cancel bold.
|
|
CancelBold,
|
|
/// Cancel bold and dim.
|
|
CancelBoldDim,
|
|
/// Cancel italic.
|
|
CancelItalic,
|
|
/// Cancel all underlines.
|
|
CancelUnderline,
|
|
/// Cancel blink.
|
|
CancelBlink,
|
|
/// Cancel inversion.
|
|
CancelReverse,
|
|
/// Cancel text hiding.
|
|
CancelHidden,
|
|
/// Cancel strikeout.
|
|
CancelStrike,
|
|
/// Set indexed foreground color.
|
|
Foreground(Color),
|
|
/// Set indexed background color.
|
|
Background(Color),
|
|
/// Underline color.
|
|
UnderlineColor(Option<Color>),
|
|
}
|
|
|
|
/// Identifiers which can be assigned to a graphic character set.
|
|
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
|
|
pub enum CharsetIndex {
|
|
/// Default set, is designated as ASCII at startup.
|
|
G0,
|
|
G1,
|
|
G2,
|
|
G3,
|
|
}
|
|
|
|
impl Default for CharsetIndex {
|
|
fn default() -> Self {
|
|
CharsetIndex::G0
|
|
}
|
|
}
|
|
|
|
/// Standard or common character sets which can be designated as G0-G3.
|
|
#[derive(Clone, Copy, Debug, Eq, PartialEq)]
|
|
pub enum StandardCharset {
|
|
Ascii,
|
|
SpecialCharacterAndLineDrawing,
|
|
}
|
|
|
|
impl Default for StandardCharset {
|
|
fn default() -> Self {
|
|
StandardCharset::Ascii
|
|
}
|
|
}
|
|
|
|
impl StandardCharset {
|
|
/// Switch/Map character to the active charset. Ascii is the common case and
|
|
/// for that we want to do as little as possible.
|
|
#[inline]
|
|
pub fn map(self, c: char) -> char {
|
|
match self {
|
|
StandardCharset::Ascii => c,
|
|
StandardCharset::SpecialCharacterAndLineDrawing => match c {
|
|
'_' => ' ',
|
|
'`' => '◆',
|
|
'a' => '▒',
|
|
'b' => '\u{2409}', // Symbol for horizontal tabulation
|
|
'c' => '\u{240c}', // Symbol for form feed
|
|
'd' => '\u{240d}', // Symbol for carriage return
|
|
'e' => '\u{240a}', // Symbol for line feed
|
|
'f' => '°',
|
|
'g' => '±',
|
|
'h' => '\u{2424}', // Symbol for newline
|
|
'i' => '\u{240b}', // Symbol for vertical tabulation
|
|
'j' => '┘',
|
|
'k' => '┐',
|
|
'l' => '┌',
|
|
'm' => '└',
|
|
'n' => '┼',
|
|
'o' => '⎺',
|
|
'p' => '⎻',
|
|
'q' => '─',
|
|
'r' => '⎼',
|
|
's' => '⎽',
|
|
't' => '├',
|
|
'u' => '┤',
|
|
'v' => '┴',
|
|
'w' => '┬',
|
|
'x' => '│',
|
|
'y' => '≤',
|
|
'z' => '≥',
|
|
'{' => 'π',
|
|
'|' => '≠',
|
|
'}' => '£',
|
|
'~' => '·',
|
|
_ => c,
|
|
},
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<'a, H> vte::Perform for Performer<'a, H>
|
|
where
|
|
H: Handler + 'a,
|
|
{
|
|
#[inline]
|
|
fn print(&mut self, c: char) {
|
|
self.handler.input(c);
|
|
self.state.preceding_char = Some(c);
|
|
}
|
|
|
|
#[inline]
|
|
fn execute(&mut self, byte: u8) {
|
|
match byte {
|
|
C0::HT => self.handler.put_tab(1),
|
|
C0::BS => self.handler.backspace(),
|
|
C0::CR => self.handler.carriage_return(),
|
|
C0::LF | C0::VT | C0::FF => self.handler.linefeed(),
|
|
C0::BEL => self.handler.bell(),
|
|
C0::SUB => self.handler.substitute(),
|
|
C0::SI => self.handler.set_active_charset(CharsetIndex::G0),
|
|
C0::SO => self.handler.set_active_charset(CharsetIndex::G1),
|
|
_ => debug!("[unhandled] execute byte={:02x}", byte),
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
fn hook(&mut self, params: &Params, intermediates: &[u8], ignore: bool, action: char) {
|
|
match (action, intermediates) {
|
|
('s', [b'=']) => {
|
|
// Start a synchronized update. The end is handled with a separate parser.
|
|
if params.iter().next().map_or(false, |param| param[0] == 1) {
|
|
self.state.dcs = Some(Dcs::SyncStart);
|
|
}
|
|
},
|
|
_ => debug!(
|
|
"[unhandled hook] params={:?}, ints: {:?}, ignore: {:?}, action: {:?}",
|
|
params, intermediates, ignore, action
|
|
),
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
fn put(&mut self, byte: u8) {
|
|
debug!("[unhandled put] byte={:?}", byte);
|
|
}
|
|
|
|
#[inline]
|
|
fn unhook(&mut self) {
|
|
match self.state.dcs {
|
|
Some(Dcs::SyncStart) => {
|
|
self.state.sync_state.timeout = Some(Instant::now() + SYNC_UPDATE_TIMEOUT);
|
|
},
|
|
Some(Dcs::SyncEnd) => (),
|
|
_ => debug!("[unhandled unhook]"),
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
fn osc_dispatch(&mut self, params: &[&[u8]], bell_terminated: bool) {
|
|
let terminator = if bell_terminated { "\x07" } else { "\x1b\\" };
|
|
|
|
fn unhandled(params: &[&[u8]]) {
|
|
let mut buf = String::new();
|
|
for items in params {
|
|
buf.push('[');
|
|
for item in *items {
|
|
let _ = write!(buf, "{:?}", *item as char);
|
|
}
|
|
buf.push_str("],");
|
|
}
|
|
debug!("[unhandled osc_dispatch]: [{}] at line {}", &buf, line!());
|
|
}
|
|
|
|
if params.is_empty() || params[0].is_empty() {
|
|
return;
|
|
}
|
|
|
|
match params[0] {
|
|
// Set window title.
|
|
b"0" | b"2" => {
|
|
if params.len() >= 2 {
|
|
let title = params[1..]
|
|
.iter()
|
|
.flat_map(|x| str::from_utf8(x))
|
|
.collect::<Vec<&str>>()
|
|
.join(";")
|
|
.trim()
|
|
.to_owned();
|
|
self.handler.set_title(Some(title));
|
|
return;
|
|
}
|
|
unhandled(params);
|
|
},
|
|
|
|
// Set color index.
|
|
b"4" => {
|
|
if params.len() <= 1 || params.len() % 2 == 0 {
|
|
unhandled(params);
|
|
return;
|
|
}
|
|
|
|
for chunk in params[1..].chunks(2) {
|
|
let index = match parse_number(chunk[0]) {
|
|
Some(index) => index,
|
|
None => {
|
|
unhandled(params);
|
|
continue;
|
|
},
|
|
};
|
|
|
|
if let Some(c) = xparse_color(chunk[1]) {
|
|
self.handler.set_color(index as usize, c);
|
|
} else if chunk[1] == b"?" {
|
|
let prefix = format!("4;{}", index);
|
|
self.handler.dynamic_color_sequence(prefix, index as usize, terminator);
|
|
} else {
|
|
unhandled(params);
|
|
}
|
|
}
|
|
},
|
|
|
|
// Hyperlink.
|
|
b"8" if params.len() > 2 => {
|
|
let link_params = params[1];
|
|
let uri = str::from_utf8(params[2]).unwrap_or_default();
|
|
|
|
// The OSC 8 escape sequence must be stopped when getting an empty `uri`.
|
|
if uri.is_empty() {
|
|
self.handler.set_hyperlink(None);
|
|
return;
|
|
}
|
|
|
|
// Link parameters are in format of `key1=value1:key2=value2`. Currently only key
|
|
// `id` is defined.
|
|
let id = link_params
|
|
.split(|&b| b == b':')
|
|
.find_map(|kv| kv.strip_prefix(b"id="))
|
|
.and_then(|kv| str::from_utf8(kv).ok());
|
|
|
|
self.handler.set_hyperlink(Some(Hyperlink::new(id, uri)));
|
|
},
|
|
|
|
// Get/set Foreground, Background, Cursor colors.
|
|
b"10" | b"11" | b"12" => {
|
|
if params.len() >= 2 {
|
|
if let Some(mut dynamic_code) = parse_number(params[0]) {
|
|
for param in ¶ms[1..] {
|
|
// 10 is the first dynamic color, also the foreground.
|
|
let offset = dynamic_code as usize - 10;
|
|
let index = NamedColor::Foreground as usize + offset;
|
|
|
|
// End of setting dynamic colors.
|
|
if index > NamedColor::Cursor as usize {
|
|
unhandled(params);
|
|
break;
|
|
}
|
|
|
|
if let Some(color) = xparse_color(param) {
|
|
self.handler.set_color(index, color);
|
|
} else if param == b"?" {
|
|
self.handler.dynamic_color_sequence(
|
|
dynamic_code.to_string(),
|
|
index,
|
|
terminator,
|
|
);
|
|
} else {
|
|
unhandled(params);
|
|
}
|
|
dynamic_code += 1;
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
unhandled(params);
|
|
},
|
|
|
|
// Set cursor style.
|
|
b"50" => {
|
|
if params.len() >= 2
|
|
&& params[1].len() >= 13
|
|
&& params[1][0..12] == *b"CursorShape="
|
|
{
|
|
let shape = match params[1][12] as char {
|
|
'0' => CursorShape::Block,
|
|
'1' => CursorShape::Beam,
|
|
'2' => CursorShape::Underline,
|
|
_ => return unhandled(params),
|
|
};
|
|
self.handler.set_cursor_shape(shape);
|
|
return;
|
|
}
|
|
unhandled(params);
|
|
},
|
|
|
|
// Set clipboard.
|
|
b"52" => {
|
|
if params.len() < 3 {
|
|
return unhandled(params);
|
|
}
|
|
|
|
let clipboard = params[1].get(0).unwrap_or(&b'c');
|
|
match params[2] {
|
|
b"?" => self.handler.clipboard_load(*clipboard, terminator),
|
|
base64 => self.handler.clipboard_store(*clipboard, base64),
|
|
}
|
|
},
|
|
|
|
// Reset color index.
|
|
b"104" => {
|
|
// Reset all color indexes when no parameters are given.
|
|
if params.len() == 1 || params[1].is_empty() {
|
|
for i in 0..256 {
|
|
self.handler.reset_color(i);
|
|
}
|
|
return;
|
|
}
|
|
|
|
// Reset color indexes given as parameters.
|
|
for param in ¶ms[1..] {
|
|
match parse_number(param) {
|
|
Some(index) => self.handler.reset_color(index as usize),
|
|
None => unhandled(params),
|
|
}
|
|
}
|
|
},
|
|
|
|
// Reset foreground color.
|
|
b"110" => self.handler.reset_color(NamedColor::Foreground as usize),
|
|
|
|
// Reset background color.
|
|
b"111" => self.handler.reset_color(NamedColor::Background as usize),
|
|
|
|
// Reset text cursor color.
|
|
b"112" => self.handler.reset_color(NamedColor::Cursor as usize),
|
|
|
|
_ => unhandled(params),
|
|
}
|
|
}
|
|
|
|
#[allow(clippy::cognitive_complexity)]
|
|
#[inline]
|
|
fn csi_dispatch(
|
|
&mut self,
|
|
params: &Params,
|
|
intermediates: &[u8],
|
|
has_ignored_intermediates: bool,
|
|
action: char,
|
|
) {
|
|
macro_rules! unhandled {
|
|
() => {{
|
|
debug!(
|
|
"[Unhandled CSI] action={:?}, params={:?}, intermediates={:?}",
|
|
action, params, intermediates
|
|
);
|
|
}};
|
|
}
|
|
|
|
if has_ignored_intermediates || intermediates.len() > 1 {
|
|
unhandled!();
|
|
return;
|
|
}
|
|
|
|
let mut params_iter = params.iter();
|
|
let handler = &mut self.handler;
|
|
|
|
let mut next_param_or = |default: u16| {
|
|
params_iter.next().map(|param| param[0]).filter(|¶m| param != 0).unwrap_or(default)
|
|
};
|
|
|
|
match (action, intermediates) {
|
|
('@', []) => handler.insert_blank(next_param_or(1) as usize),
|
|
('A', []) => handler.move_up(next_param_or(1) as usize),
|
|
('B', []) | ('e', []) => handler.move_down(next_param_or(1) as usize),
|
|
('b', []) => {
|
|
if let Some(c) = self.state.preceding_char {
|
|
for _ in 0..next_param_or(1) {
|
|
handler.input(c);
|
|
}
|
|
} else {
|
|
debug!("tried to repeat with no preceding char");
|
|
}
|
|
},
|
|
('C', []) | ('a', []) => handler.move_forward(Column(next_param_or(1) as usize)),
|
|
('c', intermediates) if next_param_or(0) == 0 => {
|
|
handler.identify_terminal(intermediates.get(0).map(|&i| i as char))
|
|
},
|
|
('D', []) => handler.move_backward(Column(next_param_or(1) as usize)),
|
|
('d', []) => handler.goto_line(Line(next_param_or(1) as i32 - 1)),
|
|
('E', []) => handler.move_down_and_cr(next_param_or(1) as usize),
|
|
('F', []) => handler.move_up_and_cr(next_param_or(1) as usize),
|
|
('G', []) | ('`', []) => handler.goto_col(Column(next_param_or(1) as usize - 1)),
|
|
('g', []) => {
|
|
let mode = match next_param_or(0) {
|
|
0 => TabulationClearMode::Current,
|
|
3 => TabulationClearMode::All,
|
|
_ => {
|
|
unhandled!();
|
|
return;
|
|
},
|
|
};
|
|
|
|
handler.clear_tabs(mode);
|
|
},
|
|
('H', []) | ('f', []) => {
|
|
let y = next_param_or(1) as i32;
|
|
let x = next_param_or(1) as usize;
|
|
handler.goto(Line(y - 1), Column(x - 1));
|
|
},
|
|
('h', intermediates) => {
|
|
for param in params_iter.map(|param| param[0]) {
|
|
match Mode::from_primitive(intermediates.get(0), param) {
|
|
Some(mode) => handler.set_mode(mode),
|
|
None => unhandled!(),
|
|
}
|
|
}
|
|
},
|
|
('I', []) => handler.move_forward_tabs(next_param_or(1)),
|
|
('J', []) => {
|
|
let mode = match next_param_or(0) {
|
|
0 => ClearMode::Below,
|
|
1 => ClearMode::Above,
|
|
2 => ClearMode::All,
|
|
3 => ClearMode::Saved,
|
|
_ => {
|
|
unhandled!();
|
|
return;
|
|
},
|
|
};
|
|
|
|
handler.clear_screen(mode);
|
|
},
|
|
('K', []) => {
|
|
let mode = match next_param_or(0) {
|
|
0 => LineClearMode::Right,
|
|
1 => LineClearMode::Left,
|
|
2 => LineClearMode::All,
|
|
_ => {
|
|
unhandled!();
|
|
return;
|
|
},
|
|
};
|
|
|
|
handler.clear_line(mode);
|
|
},
|
|
('L', []) => handler.insert_blank_lines(next_param_or(1) as usize),
|
|
('l', intermediates) => {
|
|
for param in params_iter.map(|param| param[0]) {
|
|
match Mode::from_primitive(intermediates.get(0), param) {
|
|
Some(mode) => handler.unset_mode(mode),
|
|
None => unhandled!(),
|
|
}
|
|
}
|
|
},
|
|
('M', []) => handler.delete_lines(next_param_or(1) as usize),
|
|
('m', []) => {
|
|
if params.is_empty() {
|
|
handler.terminal_attribute(Attr::Reset);
|
|
} else {
|
|
for attr in attrs_from_sgr_parameters(&mut params_iter) {
|
|
match attr {
|
|
Some(attr) => handler.terminal_attribute(attr),
|
|
None => unhandled!(),
|
|
}
|
|
}
|
|
}
|
|
},
|
|
('n', []) => handler.device_status(next_param_or(0) as usize),
|
|
('P', []) => handler.delete_chars(next_param_or(1) as usize),
|
|
('q', [b' ']) => {
|
|
// DECSCUSR (CSI Ps SP q) -- Set Cursor Style.
|
|
let cursor_style_id = next_param_or(0);
|
|
let shape = match cursor_style_id {
|
|
0 => None,
|
|
1 | 2 => Some(CursorShape::Block),
|
|
3 | 4 => Some(CursorShape::Underline),
|
|
5 | 6 => Some(CursorShape::Beam),
|
|
_ => {
|
|
unhandled!();
|
|
return;
|
|
},
|
|
};
|
|
let cursor_style =
|
|
shape.map(|shape| CursorStyle { shape, blinking: cursor_style_id % 2 == 1 });
|
|
|
|
handler.set_cursor_style(cursor_style);
|
|
},
|
|
('r', []) => {
|
|
let top = next_param_or(1) as usize;
|
|
let bottom =
|
|
params_iter.next().map(|param| param[0] as usize).filter(|¶m| param != 0);
|
|
|
|
handler.set_scrolling_region(top, bottom);
|
|
},
|
|
('S', []) => handler.scroll_up(next_param_or(1) as usize),
|
|
('s', []) => handler.save_cursor_position(),
|
|
('T', []) => handler.scroll_down(next_param_or(1) as usize),
|
|
('t', []) => match next_param_or(1) as usize {
|
|
14 => handler.text_area_size_pixels(),
|
|
18 => handler.text_area_size_chars(),
|
|
22 => handler.push_title(),
|
|
23 => handler.pop_title(),
|
|
_ => unhandled!(),
|
|
},
|
|
('u', []) => handler.restore_cursor_position(),
|
|
('X', []) => handler.erase_chars(Column(next_param_or(1) as usize)),
|
|
('Z', []) => handler.move_backward_tabs(next_param_or(1)),
|
|
_ => unhandled!(),
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
fn esc_dispatch(&mut self, intermediates: &[u8], _ignore: bool, byte: u8) {
|
|
macro_rules! unhandled {
|
|
() => {{
|
|
debug!(
|
|
"[unhandled] esc_dispatch ints={:?}, byte={:?} ({:02x})",
|
|
intermediates, byte as char, byte
|
|
);
|
|
}};
|
|
}
|
|
|
|
macro_rules! configure_charset {
|
|
($charset:path, $intermediates:expr) => {{
|
|
let index: CharsetIndex = match $intermediates {
|
|
[b'('] => CharsetIndex::G0,
|
|
[b')'] => CharsetIndex::G1,
|
|
[b'*'] => CharsetIndex::G2,
|
|
[b'+'] => CharsetIndex::G3,
|
|
_ => {
|
|
unhandled!();
|
|
return;
|
|
},
|
|
};
|
|
self.handler.configure_charset(index, $charset)
|
|
}};
|
|
}
|
|
|
|
match (byte, intermediates) {
|
|
(b'B', intermediates) => configure_charset!(StandardCharset::Ascii, intermediates),
|
|
(b'D', []) => self.handler.linefeed(),
|
|
(b'E', []) => {
|
|
self.handler.linefeed();
|
|
self.handler.carriage_return();
|
|
},
|
|
(b'H', []) => self.handler.set_horizontal_tabstop(),
|
|
(b'M', []) => self.handler.reverse_index(),
|
|
(b'Z', []) => self.handler.identify_terminal(None),
|
|
(b'c', []) => self.handler.reset_state(),
|
|
(b'0', intermediates) => {
|
|
configure_charset!(StandardCharset::SpecialCharacterAndLineDrawing, intermediates)
|
|
},
|
|
(b'7', []) => self.handler.save_cursor_position(),
|
|
(b'8', [b'#']) => self.handler.decaln(),
|
|
(b'8', []) => self.handler.restore_cursor_position(),
|
|
(b'=', []) => self.handler.set_keypad_application_mode(),
|
|
(b'>', []) => self.handler.unset_keypad_application_mode(),
|
|
// String terminator, do nothing (parser handles as string terminator).
|
|
(b'\\', []) => (),
|
|
_ => unhandled!(),
|
|
}
|
|
}
|
|
}
|
|
|
|
#[inline]
|
|
fn attrs_from_sgr_parameters(params: &mut ParamsIter<'_>) -> Vec<Option<Attr>> {
|
|
let mut attrs = Vec::with_capacity(params.size_hint().0);
|
|
|
|
while let Some(param) = params.next() {
|
|
let attr = match param {
|
|
[0] => Some(Attr::Reset),
|
|
[1] => Some(Attr::Bold),
|
|
[2] => Some(Attr::Dim),
|
|
[3] => Some(Attr::Italic),
|
|
[4, 0] => Some(Attr::CancelUnderline),
|
|
[4, 2] => Some(Attr::DoubleUnderline),
|
|
[4, 3] => Some(Attr::Undercurl),
|
|
[4, 4] => Some(Attr::DottedUnderline),
|
|
[4, 5] => Some(Attr::DashedUnderline),
|
|
[4, ..] => Some(Attr::Underline),
|
|
[5] => Some(Attr::BlinkSlow),
|
|
[6] => Some(Attr::BlinkFast),
|
|
[7] => Some(Attr::Reverse),
|
|
[8] => Some(Attr::Hidden),
|
|
[9] => Some(Attr::Strike),
|
|
[21] => Some(Attr::CancelBold),
|
|
[22] => Some(Attr::CancelBoldDim),
|
|
[23] => Some(Attr::CancelItalic),
|
|
[24] => Some(Attr::CancelUnderline),
|
|
[25] => Some(Attr::CancelBlink),
|
|
[27] => Some(Attr::CancelReverse),
|
|
[28] => Some(Attr::CancelHidden),
|
|
[29] => Some(Attr::CancelStrike),
|
|
[30] => Some(Attr::Foreground(Color::Named(NamedColor::Black))),
|
|
[31] => Some(Attr::Foreground(Color::Named(NamedColor::Red))),
|
|
[32] => Some(Attr::Foreground(Color::Named(NamedColor::Green))),
|
|
[33] => Some(Attr::Foreground(Color::Named(NamedColor::Yellow))),
|
|
[34] => Some(Attr::Foreground(Color::Named(NamedColor::Blue))),
|
|
[35] => Some(Attr::Foreground(Color::Named(NamedColor::Magenta))),
|
|
[36] => Some(Attr::Foreground(Color::Named(NamedColor::Cyan))),
|
|
[37] => Some(Attr::Foreground(Color::Named(NamedColor::White))),
|
|
[38] => {
|
|
let mut iter = params.map(|param| param[0]);
|
|
parse_sgr_color(&mut iter).map(Attr::Foreground)
|
|
},
|
|
[38, params @ ..] => handle_colon_rgb(params).map(Attr::Foreground),
|
|
[39] => Some(Attr::Foreground(Color::Named(NamedColor::Foreground))),
|
|
[40] => Some(Attr::Background(Color::Named(NamedColor::Black))),
|
|
[41] => Some(Attr::Background(Color::Named(NamedColor::Red))),
|
|
[42] => Some(Attr::Background(Color::Named(NamedColor::Green))),
|
|
[43] => Some(Attr::Background(Color::Named(NamedColor::Yellow))),
|
|
[44] => Some(Attr::Background(Color::Named(NamedColor::Blue))),
|
|
[45] => Some(Attr::Background(Color::Named(NamedColor::Magenta))),
|
|
[46] => Some(Attr::Background(Color::Named(NamedColor::Cyan))),
|
|
[47] => Some(Attr::Background(Color::Named(NamedColor::White))),
|
|
[48] => {
|
|
let mut iter = params.map(|param| param[0]);
|
|
parse_sgr_color(&mut iter).map(Attr::Background)
|
|
},
|
|
[48, params @ ..] => handle_colon_rgb(params).map(Attr::Background),
|
|
[49] => Some(Attr::Background(Color::Named(NamedColor::Background))),
|
|
[58] => {
|
|
let mut iter = params.map(|param| param[0]);
|
|
parse_sgr_color(&mut iter).map(|color| Attr::UnderlineColor(Some(color)))
|
|
},
|
|
[58, params @ ..] => {
|
|
handle_colon_rgb(params).map(|color| Attr::UnderlineColor(Some(color)))
|
|
},
|
|
[59] => Some(Attr::UnderlineColor(None)),
|
|
[90] => Some(Attr::Foreground(Color::Named(NamedColor::BrightBlack))),
|
|
[91] => Some(Attr::Foreground(Color::Named(NamedColor::BrightRed))),
|
|
[92] => Some(Attr::Foreground(Color::Named(NamedColor::BrightGreen))),
|
|
[93] => Some(Attr::Foreground(Color::Named(NamedColor::BrightYellow))),
|
|
[94] => Some(Attr::Foreground(Color::Named(NamedColor::BrightBlue))),
|
|
[95] => Some(Attr::Foreground(Color::Named(NamedColor::BrightMagenta))),
|
|
[96] => Some(Attr::Foreground(Color::Named(NamedColor::BrightCyan))),
|
|
[97] => Some(Attr::Foreground(Color::Named(NamedColor::BrightWhite))),
|
|
[100] => Some(Attr::Background(Color::Named(NamedColor::BrightBlack))),
|
|
[101] => Some(Attr::Background(Color::Named(NamedColor::BrightRed))),
|
|
[102] => Some(Attr::Background(Color::Named(NamedColor::BrightGreen))),
|
|
[103] => Some(Attr::Background(Color::Named(NamedColor::BrightYellow))),
|
|
[104] => Some(Attr::Background(Color::Named(NamedColor::BrightBlue))),
|
|
[105] => Some(Attr::Background(Color::Named(NamedColor::BrightMagenta))),
|
|
[106] => Some(Attr::Background(Color::Named(NamedColor::BrightCyan))),
|
|
[107] => Some(Attr::Background(Color::Named(NamedColor::BrightWhite))),
|
|
_ => None,
|
|
};
|
|
attrs.push(attr);
|
|
}
|
|
|
|
attrs
|
|
}
|
|
|
|
/// Handle colon separated rgb color escape sequence.
|
|
#[inline]
|
|
fn handle_colon_rgb(params: &[u16]) -> Option<Color> {
|
|
let rgb_start = if params.len() > 4 { 2 } else { 1 };
|
|
let rgb_iter = params[rgb_start..].iter().copied();
|
|
let mut iter = iter::once(params[0]).chain(rgb_iter);
|
|
|
|
parse_sgr_color(&mut iter)
|
|
}
|
|
|
|
/// Parse a color specifier from list of attributes.
|
|
fn parse_sgr_color(params: &mut dyn Iterator<Item = u16>) -> Option<Color> {
|
|
match params.next() {
|
|
Some(2) => Some(Color::Spec(Rgb {
|
|
r: u8::try_from(params.next()?).ok()?,
|
|
g: u8::try_from(params.next()?).ok()?,
|
|
b: u8::try_from(params.next()?).ok()?,
|
|
})),
|
|
Some(5) => Some(Color::Indexed(u8::try_from(params.next()?).ok()?)),
|
|
_ => None,
|
|
}
|
|
}
|
|
|
|
/// C0 set of 7-bit control characters (from ANSI X3.4-1977).
|
|
#[allow(non_snake_case)]
|
|
pub mod C0 {
|
|
/// Null filler, terminal should ignore this character.
|
|
pub const NUL: u8 = 0x00;
|
|
/// Start of Header.
|
|
pub const SOH: u8 = 0x01;
|
|
/// Start of Text, implied end of header.
|
|
pub const STX: u8 = 0x02;
|
|
/// End of Text, causes some terminal to respond with ACK or NAK.
|
|
pub const ETX: u8 = 0x03;
|
|
/// End of Transmission.
|
|
pub const EOT: u8 = 0x04;
|
|
/// Enquiry, causes terminal to send ANSWER-BACK ID.
|
|
pub const ENQ: u8 = 0x05;
|
|
/// Acknowledge, usually sent by terminal in response to ETX.
|
|
pub const ACK: u8 = 0x06;
|
|
/// Bell, triggers the bell, buzzer, or beeper on the terminal.
|
|
pub const BEL: u8 = 0x07;
|
|
/// Backspace, can be used to define overstruck characters.
|
|
pub const BS: u8 = 0x08;
|
|
/// Horizontal Tabulation, move to next predetermined position.
|
|
pub const HT: u8 = 0x09;
|
|
/// Linefeed, move to same position on next line (see also NL).
|
|
pub const LF: u8 = 0x0A;
|
|
/// Vertical Tabulation, move to next predetermined line.
|
|
pub const VT: u8 = 0x0B;
|
|
/// Form Feed, move to next form or page.
|
|
pub const FF: u8 = 0x0C;
|
|
/// Carriage Return, move to first character of current line.
|
|
pub const CR: u8 = 0x0D;
|
|
/// Shift Out, switch to G1 (other half of character set).
|
|
pub const SO: u8 = 0x0E;
|
|
/// Shift In, switch to G0 (normal half of character set).
|
|
pub const SI: u8 = 0x0F;
|
|
/// Data Link Escape, interpret next control character specially.
|
|
pub const DLE: u8 = 0x10;
|
|
/// (DC1) Terminal is allowed to resume transmitting.
|
|
pub const XON: u8 = 0x11;
|
|
/// Device Control 2, causes ASR-33 to activate paper-tape reader.
|
|
pub const DC2: u8 = 0x12;
|
|
/// (DC2) Terminal must pause and refrain from transmitting.
|
|
pub const XOFF: u8 = 0x13;
|
|
/// Device Control 4, causes ASR-33 to deactivate paper-tape reader.
|
|
pub const DC4: u8 = 0x14;
|
|
/// Negative Acknowledge, used sometimes with ETX and ACK.
|
|
pub const NAK: u8 = 0x15;
|
|
/// Synchronous Idle, used to maintain timing in Sync communication.
|
|
pub const SYN: u8 = 0x16;
|
|
/// End of Transmission block.
|
|
pub const ETB: u8 = 0x17;
|
|
/// Cancel (makes VT100 abort current escape sequence if any).
|
|
pub const CAN: u8 = 0x18;
|
|
/// End of Medium.
|
|
pub const EM: u8 = 0x19;
|
|
/// Substitute (VT100 uses this to display parity errors).
|
|
pub const SUB: u8 = 0x1A;
|
|
/// Prefix to an escape sequence.
|
|
pub const ESC: u8 = 0x1B;
|
|
/// File Separator.
|
|
pub const FS: u8 = 0x1C;
|
|
/// Group Separator.
|
|
pub const GS: u8 = 0x1D;
|
|
/// Record Separator (sent by VT132 in block-transfer mode).
|
|
pub const RS: u8 = 0x1E;
|
|
/// Unit Separator.
|
|
pub const US: u8 = 0x1F;
|
|
/// Delete, should be ignored by terminal.
|
|
pub const DEL: u8 = 0x7f;
|
|
}
|
|
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// Tests for parsing escape sequences.
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//
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// Byte sequences used in these tests are recording of pty stdout.
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::term::color::Rgb;
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struct MockHandler {
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index: CharsetIndex,
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charset: StandardCharset,
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attr: Option<Attr>,
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identity_reported: bool,
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color: Option<Rgb>,
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reset_colors: Vec<usize>,
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}
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impl Handler for MockHandler {
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fn terminal_attribute(&mut self, attr: Attr) {
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self.attr = Some(attr);
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}
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fn configure_charset(&mut self, index: CharsetIndex, charset: StandardCharset) {
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self.index = index;
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self.charset = charset;
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}
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fn set_active_charset(&mut self, index: CharsetIndex) {
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self.index = index;
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}
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fn identify_terminal(&mut self, _intermediate: Option<char>) {
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self.identity_reported = true;
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}
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fn reset_state(&mut self) {
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*self = Self::default();
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}
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fn set_color(&mut self, _: usize, c: Rgb) {
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self.color = Some(c);
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}
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fn reset_color(&mut self, index: usize) {
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self.reset_colors.push(index)
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}
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}
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impl Default for MockHandler {
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fn default() -> MockHandler {
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MockHandler {
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index: CharsetIndex::G0,
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charset: StandardCharset::Ascii,
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attr: None,
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identity_reported: false,
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color: None,
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reset_colors: Vec::new(),
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}
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}
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}
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#[test]
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fn parse_control_attribute() {
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static BYTES: &[u8] = &[0x1b, b'[', b'1', b'm'];
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let mut parser = Processor::new();
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let mut handler = MockHandler::default();
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for byte in BYTES {
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parser.advance(&mut handler, *byte);
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}
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assert_eq!(handler.attr, Some(Attr::Bold));
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}
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#[test]
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fn parse_terminal_identity_csi() {
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let bytes: &[u8] = &[0x1b, b'[', b'1', b'c'];
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let mut parser = Processor::new();
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let mut handler = MockHandler::default();
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for byte in bytes {
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parser.advance(&mut handler, *byte);
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}
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assert!(!handler.identity_reported);
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handler.reset_state();
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let bytes: &[u8] = &[0x1b, b'[', b'c'];
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for byte in bytes {
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parser.advance(&mut handler, *byte);
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}
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assert!(handler.identity_reported);
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handler.reset_state();
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let bytes: &[u8] = &[0x1b, b'[', b'0', b'c'];
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for byte in bytes {
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parser.advance(&mut handler, *byte);
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}
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assert!(handler.identity_reported);
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}
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#[test]
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fn parse_terminal_identity_esc() {
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let bytes: &[u8] = &[0x1b, b'Z'];
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let mut parser = Processor::new();
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let mut handler = MockHandler::default();
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for byte in bytes {
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parser.advance(&mut handler, *byte);
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}
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assert!(handler.identity_reported);
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handler.reset_state();
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let bytes: &[u8] = &[0x1b, b'#', b'Z'];
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let mut parser = Processor::new();
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let mut handler = MockHandler::default();
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for byte in bytes {
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parser.advance(&mut handler, *byte);
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}
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assert!(!handler.identity_reported);
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handler.reset_state();
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}
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#[test]
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fn parse_truecolor_attr() {
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static BYTES: &[u8] = &[
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0x1b, b'[', b'3', b'8', b';', b'2', b';', b'1', b'2', b'8', b';', b'6', b'6', b';',
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b'2', b'5', b'5', b'm',
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];
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let mut parser = Processor::new();
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let mut handler = MockHandler::default();
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for byte in BYTES {
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parser.advance(&mut handler, *byte);
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}
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let spec = Rgb { r: 128, g: 66, b: 255 };
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assert_eq!(handler.attr, Some(Attr::Foreground(Color::Spec(spec))));
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}
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/// No exactly a test; useful for debugging.
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#[test]
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fn parse_zsh_startup() {
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static BYTES: &[u8] = &[
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0x1b, b'[', b'1', b'm', 0x1b, b'[', b'7', b'm', b'%', 0x1b, b'[', b'2', b'7', b'm',
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0x1b, b'[', b'1', b'm', 0x1b, b'[', b'0', b'm', b' ', b' ', b' ', b' ', b' ', b' ',
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b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ',
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b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ',
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b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ',
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b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ',
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b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ', b' ',
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b' ', b' ', b' ', b'\r', b' ', b'\r', b'\r', 0x1b, b'[', b'0', b'm', 0x1b, b'[', b'2',
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b'7', b'm', 0x1b, b'[', b'2', b'4', b'm', 0x1b, b'[', b'J', b'j', b'w', b'i', b'l',
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b'm', b'@', b'j', b'w', b'i', b'l', b'm', b'-', b'd', b'e', b's', b'k', b' ', 0x1b,
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b'[', b'0', b'1', b';', b'3', b'2', b'm', 0xe2, 0x9e, 0x9c, b' ', 0x1b, b'[', b'0',
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b'1', b';', b'3', b'2', b'm', b' ', 0x1b, b'[', b'3', b'6', b'm', b'~', b'/', b'c',
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b'o', b'd', b'e',
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];
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let mut handler = MockHandler::default();
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let mut parser = Processor::new();
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for byte in BYTES {
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parser.advance(&mut handler, *byte);
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}
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}
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#[test]
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fn parse_designate_g0_as_line_drawing() {
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static BYTES: &[u8] = &[0x1b, b'(', b'0'];
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let mut parser = Processor::new();
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let mut handler = MockHandler::default();
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for byte in BYTES {
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parser.advance(&mut handler, *byte);
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}
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assert_eq!(handler.index, CharsetIndex::G0);
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assert_eq!(handler.charset, StandardCharset::SpecialCharacterAndLineDrawing);
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}
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#[test]
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fn parse_designate_g1_as_line_drawing_and_invoke() {
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static BYTES: &[u8] = &[0x1b, b')', b'0', 0x0e];
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let mut parser = Processor::new();
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let mut handler = MockHandler::default();
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for byte in &BYTES[..3] {
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parser.advance(&mut handler, *byte);
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}
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assert_eq!(handler.index, CharsetIndex::G1);
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assert_eq!(handler.charset, StandardCharset::SpecialCharacterAndLineDrawing);
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let mut handler = MockHandler::default();
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parser.advance(&mut handler, BYTES[3]);
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assert_eq!(handler.index, CharsetIndex::G1);
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}
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#[test]
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fn parse_valid_rgb_colors() {
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assert_eq!(xparse_color(b"rgb:f/e/d"), Some(Rgb { r: 0xff, g: 0xee, b: 0xdd }));
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assert_eq!(xparse_color(b"rgb:11/aa/ff"), Some(Rgb { r: 0x11, g: 0xaa, b: 0xff }));
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assert_eq!(xparse_color(b"rgb:f/ed1/cb23"), Some(Rgb { r: 0xff, g: 0xec, b: 0xca }));
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assert_eq!(xparse_color(b"rgb:ffff/0/0"), Some(Rgb { r: 0xff, g: 0x0, b: 0x0 }));
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}
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#[test]
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fn parse_valid_legacy_rgb_colors() {
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assert_eq!(xparse_color(b"#1af"), Some(Rgb { r: 0x10, g: 0xa0, b: 0xf0 }));
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assert_eq!(xparse_color(b"#11aaff"), Some(Rgb { r: 0x11, g: 0xaa, b: 0xff }));
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assert_eq!(xparse_color(b"#110aa0ff0"), Some(Rgb { r: 0x11, g: 0xaa, b: 0xff }));
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assert_eq!(xparse_color(b"#1100aa00ff00"), Some(Rgb { r: 0x11, g: 0xaa, b: 0xff }));
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}
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#[test]
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fn parse_invalid_rgb_colors() {
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assert_eq!(xparse_color(b"rgb:0//"), None);
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assert_eq!(xparse_color(b"rgb://///"), None);
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}
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#[test]
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fn parse_invalid_legacy_rgb_colors() {
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assert_eq!(xparse_color(b"#"), None);
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assert_eq!(xparse_color(b"#f"), None);
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}
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#[test]
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fn parse_invalid_number() {
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assert_eq!(parse_number(b"1abc"), None);
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}
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#[test]
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fn parse_valid_number() {
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assert_eq!(parse_number(b"123"), Some(123));
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}
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#[test]
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fn parse_number_too_large() {
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assert_eq!(parse_number(b"321"), None);
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}
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#[test]
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fn parse_osc4_set_color() {
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let bytes: &[u8] = b"\x1b]4;0;#fff\x1b\\";
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let mut parser = Processor::new();
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let mut handler = MockHandler::default();
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for byte in bytes {
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parser.advance(&mut handler, *byte);
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}
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assert_eq!(handler.color, Some(Rgb { r: 0xf0, g: 0xf0, b: 0xf0 }));
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}
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#[test]
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fn parse_osc104_reset_color() {
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let bytes: &[u8] = b"\x1b]104;1;\x1b\\";
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let mut parser = Processor::new();
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let mut handler = MockHandler::default();
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for byte in bytes {
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parser.advance(&mut handler, *byte);
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}
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assert_eq!(handler.reset_colors, vec![1]);
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}
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#[test]
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fn parse_osc104_reset_all_colors() {
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let bytes: &[u8] = b"\x1b]104;\x1b\\";
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let mut parser = Processor::new();
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let mut handler = MockHandler::default();
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for byte in bytes {
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parser.advance(&mut handler, *byte);
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}
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let expected: Vec<usize> = (0..256).collect();
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assert_eq!(handler.reset_colors, expected);
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}
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#[test]
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fn parse_osc104_reset_all_colors_no_semicolon() {
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let bytes: &[u8] = b"\x1b]104\x1b\\";
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let mut parser = Processor::new();
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let mut handler = MockHandler::default();
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for byte in bytes {
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parser.advance(&mut handler, *byte);
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}
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let expected: Vec<usize> = (0..256).collect();
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assert_eq!(handler.reset_colors, expected);
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}
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}
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