export function splitPathKeepFilename(full: string) {
  if (!full) return { prefix: '', filename: '' };
  const norm = full.replaceAll('\\', '/');
  const idx = norm.lastIndexOf('/');
  if (idx < 0) return { prefix: '', filename: norm };
  return {
    prefix: norm.slice(0, idx),
    filename: norm.slice(idx + 1),
  };
}

export function elideStart(input: string, keepTail = 16): string {
  if (!input) return '';
  if (input.length <= keepTail) return input;
  return '…' + input.slice(input.length - keepTail);
}

export function elideFilenameSmart(name: string, minHead = 6): string {
  if (!name) return '';
  const dot = name.lastIndexOf('.');
  if (dot <= 0) return elideStart(name, Math.max(minHead, 8));
  const head = name.slice(0, dot);
  const ext = name.slice(dot);
  if (head.length <= minHead) return name;
  return head.slice(0, minHead) + '…' + ext;
}