72 lines
2.0 KiB
JavaScript
72 lines
2.0 KiB
JavaScript
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"use strict";
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const MODIFIERS = new Map([
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["alt", "Alt"],
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["cmd", "Command"],
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["cmdorctrl", "CommandOrControl"],
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["command", "Command"],
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["commandorcontrol", "CommandOrControl"],
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["control", "Control"],
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["ctrl", "Control"],
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["meta", "Command"],
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["mod", "CommandOrControl"],
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["option", "Alt"],
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["shift", "Shift"],
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]);
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const PRIMARY_MODIFIERS = new Set(["Command", "CommandOrControl", "Control"]);
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const NAMED_KEYS = new Map([
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["arrowdown", "Down"],
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["arrowleft", "Left"],
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["arrowright", "Right"],
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["arrowup", "Up"],
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["backspace", "Backspace"],
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["delete", "Delete"],
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["down", "Down"],
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["end", "End"],
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["enter", "Enter"],
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["escape", "Esc"],
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["esc", "Esc"],
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["home", "Home"],
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["insert", "Insert"],
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["left", "Left"],
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["minus", "-"],
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["pagedown", "PageDown"],
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["pageup", "PageUp"],
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["plus", "+"],
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["right", "Right"],
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["space", "Space"],
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["tab", "Tab"],
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["up", "Up"],
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]);
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function toElectronAccelerator(shortcut) {
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if (typeof shortcut !== "string" || shortcut.length < 1 || shortcut.length > 128) return undefined;
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const tokens = shortcut.split("+").map((token) => token.trim());
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if (tokens.some((token) => token.length === 0) || tokens.length > 5) return undefined;
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const modifiers = [];
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const seen = new Set();
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let key;
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for (const token of tokens) {
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const lower = token.toLowerCase();
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const modifier = MODIFIERS.get(lower);
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if (modifier) {
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if (key || seen.has(modifier)
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|| (PRIMARY_MODIFIERS.has(modifier) && [...seen].some((item) => PRIMARY_MODIFIERS.has(item)))) {
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return undefined;
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}
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seen.add(modifier);
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modifiers.push(modifier);
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continue;
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}
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if (key) return undefined;
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if (/^[a-z0-9]$/u.test(lower)) key = lower.toUpperCase();
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else if (/^f(?:[1-9]|1[0-9]|2[0-4])$/u.test(lower)) key = lower.toUpperCase();
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else key = NAMED_KEYS.get(lower);
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if (!key) return undefined;
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}
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return key ? [...modifiers, key].join("+") : undefined;
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}
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module.exports = { toElectronAccelerator };
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