truncate function

String truncate(String text, int width, { String ellipsis = '…', })

Shortens text to at most width columns, ending it with ellipsis.

Implementation

String truncate(String text, int width, {String ellipsis = '…'}) {
  if (displayWidth(text) <= width) {
    return text;
  }
  final limit = width - displayWidth(ellipsis);
  if (limit < 0) {
    return '';
  }
  final buffer = StringBuffer();
  var used = 0;
  for (final cell in _cells(text)) {
    if (cell.width > 0 && used + cell.width > limit) {
      break;
    }
    buffer.write(cell.text);
    used += cell.width;
  }
  final reset = Style.enabled && text.contains('\x1B') ? '\x1B[0m' : '';
  return '$buffer$reset$ellipsis';
}