All files / lib/serialize getTlv.ts

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import { BufferReader, BufferWriter } from '@node-dlc/bufio';
 
// TODO: add unit tests
export function getTlv(reader: BufferReader): Buffer {
  const type = reader.readBigSize();
  const length = reader.readBigSize();
  const body = reader.readBytes(Number(length));
 
  const writer = new BufferWriter();
  writer.writeBigSize(type);
  writer.writeBigSize(length);
  writer.writeBytes(body);
 
  return writer.toBuffer();
}
 
export function skipTlv(reader: BufferReader): void {
  reader.readBigSize();
  const length = reader.readBigSize();
  reader.readBytes(Number(length));
}