ddidderr
b2b248e003
Ports the parsing half of ZIG/src/terminal into the ghostty-vt crate: - Parser state machine with a compile-time generated parse table and the UTF-8 decoder - OSC parser incl. all sub-parsers (titles, colors, clipboard, hyperlinks, semantic prompts/OSC 133, OSC 9 / ConEmu, iTerm2, kitty clipboard, color and text-sizing protocols, context signals) - CSI, SGR, modes table with save/restore, charsets, ansi, device status, mouse shapes, APC, DCS (incl. XTGETTCAP), tmux control-mode parser - color palette / X11 color names, kitty color and graphics command parser Deviations from Zig (documented in docs/rewrite/notes/ghostty-vt-W*.md): parser actions own their payloads instead of borrowing parser buffers; OSC strings are Vec<u8>; non-exhaustive Zig enums gain an Other(raw) variant; tmux regexes replaced by equivalent hand-written matchers. Known follow-up: semantic_prompt.rs carries local copies of the printf-q and percent decoders that belong in ghostty-os. Test Plan: - cargo test -p ghostty-vt: 395 passed, 1 ignored (skipped in Zig too) - cargo clippy -p ghostty-vt --all-targets -- -D warnings: clean
122 lines
2.9 KiB
Rust
122 lines
2.9 KiB
Rust
//! Character sets (ZIG/src/terminal/charsets.zig).
|
|
|
|
/// The available charset slots for a terminal.
|
|
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
|
|
pub enum Slots {
|
|
G0,
|
|
G1,
|
|
G2,
|
|
G3,
|
|
}
|
|
|
|
/// The name of the active slots.
|
|
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
|
|
pub enum ActiveSlot {
|
|
GL,
|
|
GR,
|
|
}
|
|
|
|
/// The list of supported character sets and their associated tables.
|
|
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
|
|
pub enum Charset {
|
|
Utf8,
|
|
Ascii,
|
|
British,
|
|
DecSpecial,
|
|
}
|
|
|
|
/// Our table length is 256 so we can contain all ASCII chars.
|
|
pub const TABLE_LEN: usize = 256;
|
|
|
|
/// The table for the given charset. The returned table is guaranteed to be
|
|
/// 256 entries that can be used to map ASCII to the given charset.
|
|
///
|
|
/// # Panics
|
|
/// Panics for `Charset::Utf8`: utf8 is not a table, callers should
|
|
/// double-check if the charset is utf8 and NOT use tables.
|
|
pub fn table(set: Charset) -> &'static [u16; TABLE_LEN] {
|
|
match set {
|
|
Charset::British => &BRITISH,
|
|
Charset::DecSpecial => &DEC_SPECIAL,
|
|
Charset::Utf8 => unreachable!("utf8 has no table"),
|
|
Charset::Ascii => &ASCII,
|
|
}
|
|
}
|
|
|
|
/// Creates a table that maps ASCII to ASCII as a getting started point.
|
|
const fn init_table() -> [u16; TABLE_LEN] {
|
|
let mut result = [0u16; TABLE_LEN];
|
|
let mut i = 0;
|
|
while i < TABLE_LEN {
|
|
result[i] = i as u16;
|
|
i += 1;
|
|
}
|
|
result
|
|
}
|
|
|
|
/// Just a basic c => c ascii table
|
|
static ASCII: [u16; TABLE_LEN] = init_table();
|
|
|
|
/// https://vt100.net/docs/vt220-rm/chapter2.html
|
|
static BRITISH: [u16; TABLE_LEN] = {
|
|
let mut t = init_table();
|
|
t[0x23] = 0x00a3;
|
|
t
|
|
};
|
|
|
|
/// https://en.wikipedia.org/wiki/DEC_Special_Graphics
|
|
static DEC_SPECIAL: [u16; TABLE_LEN] = {
|
|
let mut t = init_table();
|
|
t[0x60] = 0x25C6;
|
|
t[0x61] = 0x2592;
|
|
t[0x62] = 0x2409;
|
|
t[0x63] = 0x240C;
|
|
t[0x64] = 0x240D;
|
|
t[0x65] = 0x240A;
|
|
t[0x66] = 0x00B0;
|
|
t[0x67] = 0x00B1;
|
|
t[0x68] = 0x2424;
|
|
t[0x69] = 0x240B;
|
|
t[0x6a] = 0x2518;
|
|
t[0x6b] = 0x2510;
|
|
t[0x6c] = 0x250C;
|
|
t[0x6d] = 0x2514;
|
|
t[0x6e] = 0x253C;
|
|
t[0x6f] = 0x23BA;
|
|
t[0x70] = 0x23BB;
|
|
t[0x71] = 0x2500;
|
|
t[0x72] = 0x23BC;
|
|
t[0x73] = 0x23BD;
|
|
t[0x74] = 0x251C;
|
|
t[0x75] = 0x2524;
|
|
t[0x76] = 0x2534;
|
|
t[0x77] = 0x252C;
|
|
t[0x78] = 0x2502;
|
|
t[0x79] = 0x2264;
|
|
t[0x7a] = 0x2265;
|
|
t[0x7b] = 0x03C0;
|
|
t[0x7c] = 0x2260;
|
|
t[0x7d] = 0x00A3;
|
|
t[0x7e] = 0x00B7;
|
|
t
|
|
};
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
|
|
#[test]
|
|
fn table_lengths() {
|
|
for set in [Charset::Ascii, Charset::British, Charset::DecSpecial] {
|
|
assert_eq!(table(set).len(), 256);
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn table_contents() {
|
|
assert_eq!(table(Charset::British)[0x23], 0xa3);
|
|
assert_eq!(table(Charset::Ascii)[0x41], 0x41);
|
|
assert_eq!(table(Charset::DecSpecial)[0x71], 0x2500);
|
|
}
|
|
}
|