dart_varuint_bitcoin

Description:

dart varuint bitcoin

varuint-bitcoin #
encode/decode number
as bitcoin variable length integer



value
storage length (bytes)




[0, 0xfd)
1


[0xfd, 0xffff]
3


[0x010000, 0xffffffff]
5


[0x0100000000, 0x1fffffffffffff]
9



Installation #
dart pub add dart_varuint_bitcoin
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Example #
import 'dart:typed_data';

import 'package:convert/convert.dart';
import 'package:dart_varuint_bitcoin/dart_varuint_bitcoin.dart' as varuint;

void main() {
Uint8List buffer = Uint8List(2);
final encoded = varuint.encode(0xfc, buffer, 1);
print(hex.encode(encoded.buffer.buffer.asUint8List()));
// => 00fx

Uint8List buffer2 = Uint8List.fromList([0x00, 0xfc]);
final decoded = varuint.decode(buffer2, 1);
print(decoded.output.toRadixString(16));
// => fc
}
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License #
MIT