refactor(daemon): share quoted arg splitter

src/daemon/arg-split.ts

@@ -0,0 +1,48 @@
+export type ArgSplitEscapeMode = "none" | "backslash" | "backslash-quote-only";
+
+export function splitArgsPreservingQuotes(
+  value: string,
+  options?: { escapeMode?: ArgSplitEscapeMode },
+): string[] {
+  const args: string[] = [];
+  let current = "";
+  let inQuotes = false;
+  const escapeMode = options?.escapeMode ?? "none";
+
+  for (let i = 0; i < value.length; i++) {
+    const char = value[i];
+    if (escapeMode === "backslash" && char === "\\") {
+      if (i + 1 < value.length) {
+        current += value[i + 1];
+        i++;
+      }
+      continue;
+    }
+    if (
+      escapeMode === "backslash-quote-only" &&
+      char === "\\" &&
+      i + 1 < value.length &&
+      value[i + 1] === '"'
+    ) {
+      current += '"';
+      i++;
+      continue;
+    }
+    if (char === '"') {
+      inQuotes = !inQuotes;
+      continue;
+    }
+    if (!inQuotes && /\s/.test(char)) {
+      if (current) {
+        args.push(current);
+        current = "";
+      }
+      continue;
+    }
+    current += char;
+  }
+  if (current) {
+    args.push(current);
+  }
+  return args;
+}