asBytes method

String asBytes()

Returns bytes formatted into a human-readable, localized string.

print(null.asBytes()); // ...
print(0.asBytes()); // 0 B
print(10.asBytes()); // 10 B
print(1024.asBytes()); // 1 KB
print((1024 + 50).asBytes()); // 1 KB
print((1024 + 100).asBytes()); // 1.1 KB

Implementation

String asBytes() {
  final bytes = this;

  if (bytes == null) {
    return 'dot'.l10n * 3;
  }

  /// Precision to use in [toStringAsFixed] method.
  const precision = 1;

  // Define as `const`s instead of `pow()`s to decrease possible runtime CPU
  // computations.
  const kilobyte = 1024;
  const megabyte = kilobyte * 1024;
  const gigabyte = megabyte * 1024;
  const terabyte = gigabyte * 1024;
  const petabyte = terabyte * 1024;

  if (bytes < kilobyte) {
    return 'label_b'.l10nfmt({'amount': bytes.toString()});
  } else if (bytes < megabyte) {
    return 'label_kb'.l10nfmt({
      'amount': (bytes / kilobyte).toStringAsFixed(precision),
    });
  } else if (bytes < gigabyte) {
    return 'label_mb'.l10nfmt({
      'amount': (bytes / megabyte).toStringAsFixed(precision),
    });
  } else if (bytes < terabyte) {
    return 'label_gb'.l10nfmt({
      'amount': (bytes / gigabyte).toStringAsFixed(precision),
    });
  } else if (bytes < petabyte) {
    return 'label_tb'.l10nfmt({
      'amount': (bytes / terabyte).toStringAsFixed(precision),
    });
  }

  return 'label_pb'.l10nfmt({
    'amount': (bytes / petabyte).toStringAsFixed(precision),
  });
}