mirror of
https://github.com/getcompanion-ai/co-mono.git
synced 2026-04-15 22:03:45 +00:00
c5d54a8413
- Query terminal with CSI ? u before enabling Kitty protocol - Only enable protocol if terminal responds (100ms timeout) - Mode-aware key parsing: when Kitty active, interpret legacy sequences as custom terminal mappings (e.g. \x1b\r = shift+enter) - Add Terminal Setup section to README with Ghostty/wezterm config fixes #439
658 lines
18 KiB
TypeScript
658 lines
18 KiB
TypeScript
/**
|
|
* Keyboard input handling for terminal applications.
|
|
*
|
|
* Supports both legacy terminal sequences and Kitty keyboard protocol.
|
|
* See: https://sw.kovidgoyal.net/kitty/keyboard-protocol/
|
|
*
|
|
* Symbol keys are also supported, however some ctrl+symbol combos
|
|
* overlap with ASCII codes, e.g. ctrl+[ = ESC.
|
|
* See: https://sw.kovidgoyal.net/kitty/keyboard-protocol/#legacy-ctrl-mapping-of-ascii-keys
|
|
* Those can still be * used for ctrl+shift combos
|
|
*
|
|
* API:
|
|
* - matchesKey(data, keyId) - Check if input matches a key identifier
|
|
* - parseKey(data) - Parse input and return the key identifier
|
|
* - Key - Helper object for creating typed key identifiers
|
|
* - setKittyProtocolActive(active) - Set global Kitty protocol state
|
|
* - isKittyProtocolActive() - Query global Kitty protocol state
|
|
*/
|
|
|
|
// =============================================================================
|
|
// Global Kitty Protocol State
|
|
// =============================================================================
|
|
|
|
let _kittyProtocolActive = false;
|
|
|
|
/**
|
|
* Set the global Kitty keyboard protocol state.
|
|
* Called by ProcessTerminal after detecting protocol support.
|
|
*/
|
|
export function setKittyProtocolActive(active: boolean): void {
|
|
_kittyProtocolActive = active;
|
|
}
|
|
|
|
/**
|
|
* Query whether Kitty keyboard protocol is currently active.
|
|
*/
|
|
export function isKittyProtocolActive(): boolean {
|
|
return _kittyProtocolActive;
|
|
}
|
|
|
|
// =============================================================================
|
|
// Type-Safe Key Identifiers
|
|
// =============================================================================
|
|
|
|
type Letter =
|
|
| "a"
|
|
| "b"
|
|
| "c"
|
|
| "d"
|
|
| "e"
|
|
| "f"
|
|
| "g"
|
|
| "h"
|
|
| "i"
|
|
| "j"
|
|
| "k"
|
|
| "l"
|
|
| "m"
|
|
| "n"
|
|
| "o"
|
|
| "p"
|
|
| "q"
|
|
| "r"
|
|
| "s"
|
|
| "t"
|
|
| "u"
|
|
| "v"
|
|
| "w"
|
|
| "x"
|
|
| "y"
|
|
| "z";
|
|
|
|
type SymbolKey =
|
|
| "`"
|
|
| "-"
|
|
| "="
|
|
| "["
|
|
| "]"
|
|
| "\\"
|
|
| ";"
|
|
| "'"
|
|
| ","
|
|
| "."
|
|
| "/"
|
|
| "!"
|
|
| "@"
|
|
| "#"
|
|
| "$"
|
|
| "%"
|
|
| "^"
|
|
| "&"
|
|
| "*"
|
|
| "("
|
|
| ")"
|
|
| "_"
|
|
| "+"
|
|
| "|"
|
|
| "~"
|
|
| "{"
|
|
| "}"
|
|
| ":"
|
|
| "<"
|
|
| ">"
|
|
| "?";
|
|
|
|
type SpecialKey =
|
|
| "escape"
|
|
| "esc"
|
|
| "enter"
|
|
| "return"
|
|
| "tab"
|
|
| "space"
|
|
| "backspace"
|
|
| "delete"
|
|
| "home"
|
|
| "end"
|
|
| "up"
|
|
| "down"
|
|
| "left"
|
|
| "right";
|
|
|
|
type BaseKey = Letter | SymbolKey | SpecialKey;
|
|
|
|
/**
|
|
* Union type of all valid key identifiers.
|
|
* Provides autocomplete and catches typos at compile time.
|
|
*/
|
|
export type KeyId =
|
|
| BaseKey
|
|
| `ctrl+${BaseKey}`
|
|
| `shift+${BaseKey}`
|
|
| `alt+${BaseKey}`
|
|
| `ctrl+shift+${BaseKey}`
|
|
| `shift+ctrl+${BaseKey}`
|
|
| `ctrl+alt+${BaseKey}`
|
|
| `alt+ctrl+${BaseKey}`
|
|
| `shift+alt+${BaseKey}`
|
|
| `alt+shift+${BaseKey}`
|
|
| `ctrl+shift+alt+${BaseKey}`
|
|
| `ctrl+alt+shift+${BaseKey}`
|
|
| `shift+ctrl+alt+${BaseKey}`
|
|
| `shift+alt+ctrl+${BaseKey}`
|
|
| `alt+ctrl+shift+${BaseKey}`
|
|
| `alt+shift+ctrl+${BaseKey}`;
|
|
|
|
/**
|
|
* Helper object for creating typed key identifiers with autocomplete.
|
|
*
|
|
* Usage:
|
|
* - Key.escape, Key.enter, Key.tab, etc. for special keys
|
|
* - Key.backtick, Key.comma, Key.period, etc. for symbol keys
|
|
* - Key.ctrl("c"), Key.alt("x") for single modifier
|
|
* - Key.ctrlShift("p"), Key.ctrlAlt("x") for combined modifiers
|
|
*/
|
|
export const Key = {
|
|
// Special keys
|
|
escape: "escape" as const,
|
|
esc: "esc" as const,
|
|
enter: "enter" as const,
|
|
return: "return" as const,
|
|
tab: "tab" as const,
|
|
space: "space" as const,
|
|
backspace: "backspace" as const,
|
|
delete: "delete" as const,
|
|
home: "home" as const,
|
|
end: "end" as const,
|
|
up: "up" as const,
|
|
down: "down" as const,
|
|
left: "left" as const,
|
|
right: "right" as const,
|
|
|
|
// Symbol keys
|
|
backtick: "`" as const,
|
|
hyphen: "-" as const,
|
|
equals: "=" as const,
|
|
leftbracket: "[" as const,
|
|
rightbracket: "]" as const,
|
|
backslash: "\\" as const,
|
|
semicolon: ";" as const,
|
|
quote: "'" as const,
|
|
comma: "," as const,
|
|
period: "." as const,
|
|
slash: "/" as const,
|
|
exclamation: "!" as const,
|
|
at: "@" as const,
|
|
hash: "#" as const,
|
|
dollar: "$" as const,
|
|
percent: "%" as const,
|
|
caret: "^" as const,
|
|
ampersand: "&" as const,
|
|
asterisk: "*" as const,
|
|
leftparen: "(" as const,
|
|
rightparen: ")" as const,
|
|
underscore: "_" as const,
|
|
plus: "+" as const,
|
|
pipe: "|" as const,
|
|
tilde: "~" as const,
|
|
leftbrace: "{" as const,
|
|
rightbrace: "}" as const,
|
|
colon: ":" as const,
|
|
lessthan: "<" as const,
|
|
greaterthan: ">" as const,
|
|
question: "?" as const,
|
|
|
|
// Single modifiers
|
|
ctrl: <K extends BaseKey>(key: K): `ctrl+${K}` => `ctrl+${key}`,
|
|
shift: <K extends BaseKey>(key: K): `shift+${K}` => `shift+${key}`,
|
|
alt: <K extends BaseKey>(key: K): `alt+${K}` => `alt+${key}`,
|
|
|
|
// Combined modifiers
|
|
ctrlShift: <K extends BaseKey>(key: K): `ctrl+shift+${K}` => `ctrl+shift+${key}`,
|
|
shiftCtrl: <K extends BaseKey>(key: K): `shift+ctrl+${K}` => `shift+ctrl+${key}`,
|
|
ctrlAlt: <K extends BaseKey>(key: K): `ctrl+alt+${K}` => `ctrl+alt+${key}`,
|
|
altCtrl: <K extends BaseKey>(key: K): `alt+ctrl+${K}` => `alt+ctrl+${key}`,
|
|
shiftAlt: <K extends BaseKey>(key: K): `shift+alt+${K}` => `shift+alt+${key}`,
|
|
altShift: <K extends BaseKey>(key: K): `alt+shift+${K}` => `alt+shift+${key}`,
|
|
|
|
// Triple modifiers
|
|
ctrlShiftAlt: <K extends BaseKey>(key: K): `ctrl+shift+alt+${K}` => `ctrl+shift+alt+${key}`,
|
|
} as const;
|
|
|
|
// =============================================================================
|
|
// Constants
|
|
// =============================================================================
|
|
|
|
const SYMBOL_KEYS = new Set([
|
|
"`",
|
|
"-",
|
|
"=",
|
|
"[",
|
|
"]",
|
|
"\\",
|
|
";",
|
|
"'",
|
|
",",
|
|
".",
|
|
"/",
|
|
"!",
|
|
"@",
|
|
"#",
|
|
"$",
|
|
"%",
|
|
"^",
|
|
"&",
|
|
"*",
|
|
"(",
|
|
")",
|
|
"_",
|
|
"+",
|
|
"|",
|
|
"~",
|
|
"{",
|
|
"}",
|
|
":",
|
|
"<",
|
|
">",
|
|
"?",
|
|
]);
|
|
|
|
const MODIFIERS = {
|
|
shift: 1,
|
|
alt: 2,
|
|
ctrl: 4,
|
|
} as const;
|
|
|
|
const LOCK_MASK = 64 + 128; // Caps Lock + Num Lock
|
|
|
|
const CODEPOINTS = {
|
|
escape: 27,
|
|
tab: 9,
|
|
enter: 13,
|
|
space: 32,
|
|
backspace: 127,
|
|
kpEnter: 57414, // Numpad Enter (Kitty protocol)
|
|
} as const;
|
|
|
|
const ARROW_CODEPOINTS = {
|
|
up: -1,
|
|
down: -2,
|
|
right: -3,
|
|
left: -4,
|
|
} as const;
|
|
|
|
const FUNCTIONAL_CODEPOINTS = {
|
|
delete: -10,
|
|
insert: -11,
|
|
pageUp: -12,
|
|
pageDown: -13,
|
|
home: -14,
|
|
end: -15,
|
|
} as const;
|
|
|
|
// =============================================================================
|
|
// Kitty Protocol Parsing
|
|
// =============================================================================
|
|
|
|
interface ParsedKittySequence {
|
|
codepoint: number;
|
|
modifier: number;
|
|
}
|
|
|
|
function parseKittySequence(data: string): ParsedKittySequence | null {
|
|
// CSI u format: \x1b[<num>u or \x1b[<num>;<mod>u
|
|
const csiUMatch = data.match(/^\x1b\[(\d+)(?:;(\d+))?u$/);
|
|
if (csiUMatch) {
|
|
const codepoint = parseInt(csiUMatch[1]!, 10);
|
|
const modValue = csiUMatch[2] ? parseInt(csiUMatch[2], 10) : 1;
|
|
return { codepoint, modifier: modValue - 1 };
|
|
}
|
|
|
|
// Arrow keys with modifier: \x1b[1;<mod>A/B/C/D
|
|
const arrowMatch = data.match(/^\x1b\[1;(\d+)([ABCD])$/);
|
|
if (arrowMatch) {
|
|
const modValue = parseInt(arrowMatch[1]!, 10);
|
|
const arrowCodes: Record<string, number> = { A: -1, B: -2, C: -3, D: -4 };
|
|
return { codepoint: arrowCodes[arrowMatch[2]!]!, modifier: modValue - 1 };
|
|
}
|
|
|
|
// Functional keys: \x1b[<num>~ or \x1b[<num>;<mod>~
|
|
const funcMatch = data.match(/^\x1b\[(\d+)(?:;(\d+))?~$/);
|
|
if (funcMatch) {
|
|
const keyNum = parseInt(funcMatch[1]!, 10);
|
|
const modValue = funcMatch[2] ? parseInt(funcMatch[2], 10) : 1;
|
|
const funcCodes: Record<number, number> = {
|
|
2: FUNCTIONAL_CODEPOINTS.insert,
|
|
3: FUNCTIONAL_CODEPOINTS.delete,
|
|
5: FUNCTIONAL_CODEPOINTS.pageUp,
|
|
6: FUNCTIONAL_CODEPOINTS.pageDown,
|
|
7: FUNCTIONAL_CODEPOINTS.home,
|
|
8: FUNCTIONAL_CODEPOINTS.end,
|
|
};
|
|
const codepoint = funcCodes[keyNum];
|
|
if (codepoint !== undefined) {
|
|
return { codepoint, modifier: modValue - 1 };
|
|
}
|
|
}
|
|
|
|
// Home/End with modifier: \x1b[1;<mod>H/F
|
|
const homeEndMatch = data.match(/^\x1b\[1;(\d+)([HF])$/);
|
|
if (homeEndMatch) {
|
|
const modValue = parseInt(homeEndMatch[1]!, 10);
|
|
const codepoint = homeEndMatch[2] === "H" ? FUNCTIONAL_CODEPOINTS.home : FUNCTIONAL_CODEPOINTS.end;
|
|
return { codepoint, modifier: modValue - 1 };
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
function matchesKittySequence(data: string, expectedCodepoint: number, expectedModifier: number): boolean {
|
|
const parsed = parseKittySequence(data);
|
|
if (!parsed) return false;
|
|
const actualMod = parsed.modifier & ~LOCK_MASK;
|
|
const expectedMod = expectedModifier & ~LOCK_MASK;
|
|
return parsed.codepoint === expectedCodepoint && actualMod === expectedMod;
|
|
}
|
|
|
|
// =============================================================================
|
|
// Generic Key Matching
|
|
// =============================================================================
|
|
|
|
function rawCtrlChar(letter: string): string {
|
|
const code = letter.toLowerCase().charCodeAt(0) - 96;
|
|
return String.fromCharCode(code);
|
|
}
|
|
|
|
function parseKeyId(keyId: string): { key: string; ctrl: boolean; shift: boolean; alt: boolean } | null {
|
|
const parts = keyId.toLowerCase().split("+");
|
|
const key = parts[parts.length - 1];
|
|
if (!key) return null;
|
|
return {
|
|
key,
|
|
ctrl: parts.includes("ctrl"),
|
|
shift: parts.includes("shift"),
|
|
alt: parts.includes("alt"),
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Match input data against a key identifier string.
|
|
*
|
|
* Supported key identifiers:
|
|
* - Single keys: "escape", "tab", "enter", "backspace", "delete", "home", "end", "space"
|
|
* - Arrow keys: "up", "down", "left", "right"
|
|
* - Ctrl combinations: "ctrl+c", "ctrl+z", etc.
|
|
* - Shift combinations: "shift+tab", "shift+enter"
|
|
* - Alt combinations: "alt+enter", "alt+backspace"
|
|
* - Combined modifiers: "shift+ctrl+p", "ctrl+alt+x"
|
|
*
|
|
* Use the Key helper for autocomplete: Key.ctrl("c"), Key.escape, Key.ctrlShift("p")
|
|
*
|
|
* @param data - Raw input data from terminal
|
|
* @param keyId - Key identifier (e.g., "ctrl+c", "escape", Key.ctrl("c"))
|
|
*/
|
|
export function matchesKey(data: string, keyId: KeyId): boolean {
|
|
const parsed = parseKeyId(keyId);
|
|
if (!parsed) return false;
|
|
|
|
const { key, ctrl, shift, alt } = parsed;
|
|
let modifier = 0;
|
|
if (shift) modifier |= MODIFIERS.shift;
|
|
if (alt) modifier |= MODIFIERS.alt;
|
|
if (ctrl) modifier |= MODIFIERS.ctrl;
|
|
|
|
switch (key) {
|
|
case "escape":
|
|
case "esc":
|
|
if (modifier !== 0) return false;
|
|
return data === "\x1b" || matchesKittySequence(data, CODEPOINTS.escape, 0);
|
|
|
|
case "space":
|
|
if (modifier === 0) {
|
|
return data === " " || matchesKittySequence(data, CODEPOINTS.space, 0);
|
|
}
|
|
return matchesKittySequence(data, CODEPOINTS.space, modifier);
|
|
|
|
case "tab":
|
|
if (shift && !ctrl && !alt) {
|
|
return data === "\x1b[Z" || matchesKittySequence(data, CODEPOINTS.tab, MODIFIERS.shift);
|
|
}
|
|
if (modifier === 0) {
|
|
return data === "\t" || matchesKittySequence(data, CODEPOINTS.tab, 0);
|
|
}
|
|
return matchesKittySequence(data, CODEPOINTS.tab, modifier);
|
|
|
|
case "enter":
|
|
case "return":
|
|
if (shift && !ctrl && !alt) {
|
|
// CSI u sequences (standard Kitty protocol)
|
|
if (
|
|
matchesKittySequence(data, CODEPOINTS.enter, MODIFIERS.shift) ||
|
|
matchesKittySequence(data, CODEPOINTS.kpEnter, MODIFIERS.shift)
|
|
) {
|
|
return true;
|
|
}
|
|
// When Kitty protocol is active, legacy sequences are custom terminal mappings
|
|
// \x1b\r = Kitty's "map shift+enter send_text all \e\r"
|
|
// \n = Ghostty's "keybind = shift+enter=text:\n"
|
|
if (_kittyProtocolActive) {
|
|
return data === "\x1b\r" || data === "\n";
|
|
}
|
|
return false;
|
|
}
|
|
if (alt && !ctrl && !shift) {
|
|
// CSI u sequences (standard Kitty protocol)
|
|
if (
|
|
matchesKittySequence(data, CODEPOINTS.enter, MODIFIERS.alt) ||
|
|
matchesKittySequence(data, CODEPOINTS.kpEnter, MODIFIERS.alt)
|
|
) {
|
|
return true;
|
|
}
|
|
// \x1b\r is alt+enter only in legacy mode (no Kitty protocol)
|
|
// When Kitty protocol is active, alt+enter comes as CSI u sequence
|
|
if (!_kittyProtocolActive) {
|
|
return data === "\x1b\r";
|
|
}
|
|
return false;
|
|
}
|
|
if (modifier === 0) {
|
|
return (
|
|
data === "\r" ||
|
|
data === "\x1bOM" || // SS3 M (numpad enter in some terminals)
|
|
matchesKittySequence(data, CODEPOINTS.enter, 0) ||
|
|
matchesKittySequence(data, CODEPOINTS.kpEnter, 0)
|
|
);
|
|
}
|
|
return (
|
|
matchesKittySequence(data, CODEPOINTS.enter, modifier) ||
|
|
matchesKittySequence(data, CODEPOINTS.kpEnter, modifier)
|
|
);
|
|
|
|
case "backspace":
|
|
if (alt && !ctrl && !shift) {
|
|
return data === "\x1b\x7f" || matchesKittySequence(data, CODEPOINTS.backspace, MODIFIERS.alt);
|
|
}
|
|
if (modifier === 0) {
|
|
return data === "\x7f" || data === "\x08" || matchesKittySequence(data, CODEPOINTS.backspace, 0);
|
|
}
|
|
return matchesKittySequence(data, CODEPOINTS.backspace, modifier);
|
|
|
|
case "delete":
|
|
if (modifier === 0) {
|
|
return data === "\x1b[3~" || matchesKittySequence(data, FUNCTIONAL_CODEPOINTS.delete, 0);
|
|
}
|
|
return matchesKittySequence(data, FUNCTIONAL_CODEPOINTS.delete, modifier);
|
|
|
|
case "home":
|
|
if (modifier === 0) {
|
|
return (
|
|
data === "\x1b[H" ||
|
|
data === "\x1b[1~" ||
|
|
data === "\x1b[7~" ||
|
|
matchesKittySequence(data, FUNCTIONAL_CODEPOINTS.home, 0)
|
|
);
|
|
}
|
|
return matchesKittySequence(data, FUNCTIONAL_CODEPOINTS.home, modifier);
|
|
|
|
case "end":
|
|
if (modifier === 0) {
|
|
return (
|
|
data === "\x1b[F" ||
|
|
data === "\x1b[4~" ||
|
|
data === "\x1b[8~" ||
|
|
matchesKittySequence(data, FUNCTIONAL_CODEPOINTS.end, 0)
|
|
);
|
|
}
|
|
return matchesKittySequence(data, FUNCTIONAL_CODEPOINTS.end, modifier);
|
|
|
|
case "up":
|
|
if (modifier === 0) {
|
|
return data === "\x1b[A" || matchesKittySequence(data, ARROW_CODEPOINTS.up, 0);
|
|
}
|
|
return matchesKittySequence(data, ARROW_CODEPOINTS.up, modifier);
|
|
|
|
case "down":
|
|
if (modifier === 0) {
|
|
return data === "\x1b[B" || matchesKittySequence(data, ARROW_CODEPOINTS.down, 0);
|
|
}
|
|
return matchesKittySequence(data, ARROW_CODEPOINTS.down, modifier);
|
|
|
|
case "left":
|
|
if (alt && !ctrl && !shift) {
|
|
return (
|
|
data === "\x1b[1;3D" ||
|
|
data === "\x1bb" ||
|
|
matchesKittySequence(data, ARROW_CODEPOINTS.left, MODIFIERS.alt)
|
|
);
|
|
}
|
|
if (ctrl && !alt && !shift) {
|
|
return data === "\x1b[1;5D" || matchesKittySequence(data, ARROW_CODEPOINTS.left, MODIFIERS.ctrl);
|
|
}
|
|
if (modifier === 0) {
|
|
return data === "\x1b[D" || matchesKittySequence(data, ARROW_CODEPOINTS.left, 0);
|
|
}
|
|
return matchesKittySequence(data, ARROW_CODEPOINTS.left, modifier);
|
|
|
|
case "right":
|
|
if (alt && !ctrl && !shift) {
|
|
return (
|
|
data === "\x1b[1;3C" ||
|
|
data === "\x1bf" ||
|
|
matchesKittySequence(data, ARROW_CODEPOINTS.right, MODIFIERS.alt)
|
|
);
|
|
}
|
|
if (ctrl && !alt && !shift) {
|
|
return data === "\x1b[1;5C" || matchesKittySequence(data, ARROW_CODEPOINTS.right, MODIFIERS.ctrl);
|
|
}
|
|
if (modifier === 0) {
|
|
return data === "\x1b[C" || matchesKittySequence(data, ARROW_CODEPOINTS.right, 0);
|
|
}
|
|
return matchesKittySequence(data, ARROW_CODEPOINTS.right, modifier);
|
|
}
|
|
|
|
// Handle single letter keys (a-z) and some symbols
|
|
if (key.length === 1 && ((key >= "a" && key <= "z") || SYMBOL_KEYS.has(key))) {
|
|
const codepoint = key.charCodeAt(0);
|
|
|
|
if (ctrl && !shift && !alt) {
|
|
const raw = rawCtrlChar(key);
|
|
if (data === raw) return true;
|
|
if (data.length > 0 && data.charCodeAt(0) === raw.charCodeAt(0)) return true;
|
|
return matchesKittySequence(data, codepoint, MODIFIERS.ctrl);
|
|
}
|
|
|
|
if (ctrl && shift && !alt) {
|
|
return matchesKittySequence(data, codepoint, MODIFIERS.shift + MODIFIERS.ctrl);
|
|
}
|
|
|
|
if (shift && !ctrl && !alt) {
|
|
// Legacy: shift+letter produces uppercase
|
|
if (data === key.toUpperCase()) return true;
|
|
return matchesKittySequence(data, codepoint, MODIFIERS.shift);
|
|
}
|
|
|
|
if (modifier !== 0) {
|
|
return matchesKittySequence(data, codepoint, modifier);
|
|
}
|
|
|
|
return data === key;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Parse input data and return the key identifier if recognized.
|
|
*
|
|
* @param data - Raw input data from terminal
|
|
* @returns Key identifier string (e.g., "ctrl+c") or undefined
|
|
*/
|
|
export function parseKey(data: string): string | undefined {
|
|
const kitty = parseKittySequence(data);
|
|
if (kitty) {
|
|
const { codepoint, modifier } = kitty;
|
|
const mods: string[] = [];
|
|
const effectiveMod = modifier & ~LOCK_MASK;
|
|
if (effectiveMod & MODIFIERS.shift) mods.push("shift");
|
|
if (effectiveMod & MODIFIERS.ctrl) mods.push("ctrl");
|
|
if (effectiveMod & MODIFIERS.alt) mods.push("alt");
|
|
|
|
let keyName: string | undefined;
|
|
if (codepoint === CODEPOINTS.escape) keyName = "escape";
|
|
else if (codepoint === CODEPOINTS.tab) keyName = "tab";
|
|
else if (codepoint === CODEPOINTS.enter || codepoint === CODEPOINTS.kpEnter) keyName = "enter";
|
|
else if (codepoint === CODEPOINTS.space) keyName = "space";
|
|
else if (codepoint === CODEPOINTS.backspace) keyName = "backspace";
|
|
else if (codepoint === FUNCTIONAL_CODEPOINTS.delete) keyName = "delete";
|
|
else if (codepoint === FUNCTIONAL_CODEPOINTS.home) keyName = "home";
|
|
else if (codepoint === FUNCTIONAL_CODEPOINTS.end) keyName = "end";
|
|
else if (codepoint === ARROW_CODEPOINTS.up) keyName = "up";
|
|
else if (codepoint === ARROW_CODEPOINTS.down) keyName = "down";
|
|
else if (codepoint === ARROW_CODEPOINTS.left) keyName = "left";
|
|
else if (codepoint === ARROW_CODEPOINTS.right) keyName = "right";
|
|
else if (codepoint >= 97 && codepoint <= 122) keyName = String.fromCharCode(codepoint);
|
|
else if (SYMBOL_KEYS.has(String.fromCharCode(codepoint))) keyName = String.fromCharCode(codepoint);
|
|
|
|
if (keyName) {
|
|
return mods.length > 0 ? `${mods.join("+")}+${keyName}` : keyName;
|
|
}
|
|
}
|
|
|
|
// Mode-aware legacy sequences
|
|
// When Kitty protocol is active, ambiguous sequences are interpreted as custom terminal mappings:
|
|
// - \x1b\r = shift+enter (Kitty mapping), not alt+enter
|
|
// - \n = shift+enter (Ghostty mapping)
|
|
if (_kittyProtocolActive) {
|
|
if (data === "\x1b\r" || data === "\n") return "shift+enter";
|
|
}
|
|
|
|
// Legacy sequences (used when Kitty protocol is not active, or for unambiguous sequences)
|
|
if (data === "\x1b") return "escape";
|
|
if (data === "\t") return "tab";
|
|
if (data === "\r" || data === "\x1bOM") return "enter";
|
|
if (data === " ") return "space";
|
|
if (data === "\x7f" || data === "\x08") return "backspace";
|
|
if (data === "\x1b[Z") return "shift+tab";
|
|
if (!_kittyProtocolActive && data === "\x1b\r") return "alt+enter";
|
|
if (data === "\x1b\x7f") return "alt+backspace";
|
|
if (data === "\x1b[A") return "up";
|
|
if (data === "\x1b[B") return "down";
|
|
if (data === "\x1b[C") return "right";
|
|
if (data === "\x1b[D") return "left";
|
|
if (data === "\x1b[H") return "home";
|
|
if (data === "\x1b[F") return "end";
|
|
if (data === "\x1b[3~") return "delete";
|
|
|
|
// Raw Ctrl+letter
|
|
if (data.length === 1) {
|
|
const code = data.charCodeAt(0);
|
|
if (code >= 1 && code <= 26) {
|
|
return `ctrl+${String.fromCharCode(code + 96)}`;
|
|
}
|
|
if (code >= 32 && code <= 126) {
|
|
return data;
|
|
}
|
|
}
|
|
|
|
return undefined;
|
|
}
|