decode static method

List<List<PsbtKeyValue>> decode(Uint8List bytes)

Decode into sections: global, input0, ..., output0, ....

Implementation

static List<List<PsbtKeyValue>> decode(Uint8List bytes) {
  if (!hasMagic(bytes)) {
    throw FormatException('Invalid PSBT: missing magic bytes');
  }
  final reader = WireReader(bytes, psbtMagic.length);
  final sections = <List<PsbtKeyValue>>[];

  // Each section is key-value pairs terminated by a 0x00 separator.
  while (!reader.atEnd) {
    final section = <PsbtKeyValue>[];
    while (!reader.atEnd) {
      final keyLen = reader.readVarInt().toInt();
      if (keyLen == 0) break; // separator
      final key = reader.readSlice(keyLen);
      final valueLen = reader.readVarInt().toInt();
      final value = reader.readSlice(valueLen);
      section.add(PsbtKeyValue(key: key, value: value));
    }
    sections.add(section);
  }

  return sections;
}