[Init] Initial commit - NetMesh terminal manager

electron/plugins/keybindings.cjs

@@ -0,0 +1,71 @@
+"use strict";
+
+const MODIFIERS = new Map([
+  ["alt", "Alt"],
+  ["cmd", "Command"],
+  ["cmdorctrl", "CommandOrControl"],
+  ["command", "Command"],
+  ["commandorcontrol", "CommandOrControl"],
+  ["control", "Control"],
+  ["ctrl", "Control"],
+  ["meta", "Command"],
+  ["mod", "CommandOrControl"],
+  ["option", "Alt"],
+  ["shift", "Shift"],
+]);
+const PRIMARY_MODIFIERS = new Set(["Command", "CommandOrControl", "Control"]);
+
+const NAMED_KEYS = new Map([
+  ["arrowdown", "Down"],
+  ["arrowleft", "Left"],
+  ["arrowright", "Right"],
+  ["arrowup", "Up"],
+  ["backspace", "Backspace"],
+  ["delete", "Delete"],
+  ["down", "Down"],
+  ["end", "End"],
+  ["enter", "Enter"],
+  ["escape", "Esc"],
+  ["esc", "Esc"],
+  ["home", "Home"],
+  ["insert", "Insert"],
+  ["left", "Left"],
+  ["minus", "-"],
+  ["pagedown", "PageDown"],
+  ["pageup", "PageUp"],
+  ["plus", "+"],
+  ["right", "Right"],
+  ["space", "Space"],
+  ["tab", "Tab"],
+  ["up", "Up"],
+]);
+
+function toElectronAccelerator(shortcut) {
+  if (typeof shortcut !== "string" || shortcut.length < 1 || shortcut.length > 128) return undefined;
+  const tokens = shortcut.split("+").map((token) => token.trim());
+  if (tokens.some((token) => token.length === 0) || tokens.length > 5) return undefined;
+  const modifiers = [];
+  const seen = new Set();
+  let key;
+  for (const token of tokens) {
+    const lower = token.toLowerCase();
+    const modifier = MODIFIERS.get(lower);
+    if (modifier) {
+      if (key || seen.has(modifier)
+        || (PRIMARY_MODIFIERS.has(modifier) && [...seen].some((item) => PRIMARY_MODIFIERS.has(item)))) {
+        return undefined;
+      }
+      seen.add(modifier);
+      modifiers.push(modifier);
+      continue;
+    }
+    if (key) return undefined;
+    if (/^[a-z0-9]$/u.test(lower)) key = lower.toUpperCase();
+    else if (/^f(?:[1-9]|1[0-9]|2[0-4])$/u.test(lower)) key = lower.toUpperCase();
+    else key = NAMED_KEYS.get(lower);
+    if (!key) return undefined;
+  }
+  return key ? [...modifiers, key].join("+") : undefined;
+}
+
+module.exports = { toElectronAccelerator };