decode function

Uint8List decode(dynamic string)

Decodes the given base32-encoded string into an array of 5-bit integers.

Throws ValidationError if input is invalid.

Implementation

Uint8List decode(dynamic string) {
  validate(string is String, 'Invalid base32-encoded string: $string.');
  final Uint8List data = Uint8List((string as String).length);
  for (int i = 0; i < string.length; ++i) {
    final String value = string[i];
    validate(charsetInverseIndex.containsKey(value), 'Invalid value: $value.');
    data[i] = charsetInverseIndex[value]!;
  }
  return data;
}