/** Command-line helpers shared by the terminal and External Tools. */

/** Splits a command line (`/bin/zsh --login`, `-c "a b"`) into words, honouring quotes. */
export function splitCommandLine(line: string): string[] {
  const out: string[] = [];
  let cur = "";
  let quote: string | null = null;
  let has = false;
  for (let i = 0; i < line.length; i++) {
    const c = line[i]!;
    if (quote) {
      if (c === quote) quote = null;
      else if (c === "\\" && quote === '"' && i + 1 < line.length) cur += line[++i];
      else cur += c;
    } else if (c === '"' || c === "'") {
      quote = c;
      has = true;
    } else if (c === "\\" && i + 1 < line.length) {
      cur += line[++i];
      has = true;
    } else if (/\s/.test(c)) {
      if (has || cur) out.push(cur);
      cur = "";
      has = false;
    } else cur += c;
  }
  if (has || cur) out.push(cur);
  return out;
}