gmpassos/data_serializer

data_serializer

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Portable Dart package to handle data serialization/deserialization efficiently, including a dynamic BytesBuffer to read/write data.

API Documentation

See the API Documentation for a full list of functions, classes and extension.

Usage

import 'package:data_serializer/data_serializer.dart';

void main() {
  // Dynamic bytes buffer with initial capacity of 16 bytes.
  var buffer = BytesBuffer(16);

  // Write a unsigned int of 32 bits:
  buffer.writeInt32(0x10203040);

  // Write a `String` encoded using UTF-8:
  buffer.writeString('Hello!');

  // Write a unsigned int of 64 bits:
  buffer.writeUint64(9223372036854775807);

  // Write a data block (prefixed by 4 bytes for he data length).
  var dataBlock = [110, 120, 130, 140, 150, 160].toUint8List();
  buffer.writeBlock32(dataBlock);

  // Write all bytes:
  buffer.writeAll([210, 220]);

  // The current length of the buffer, expanded automatically:
  print('length: ${buffer.length}');

  // Change the current position cursor to `0`:
  buffer.seek(0);

  // Read a 32 bits int:
  var n32 = buffer.readUint32();
  print('n32: 0x${n32.toHex32()}');

  // Reads a `String` decoding from UTF-8:
  var s = buffer.readString();
  print('s: $s');

  // Read a 64 bits int:
  var n64 = buffer.readUint64();
  print('n64: $n64');

  // The current buffer position:
  print('position: ${buffer.position}');

  // Read a data block:
  var dataBlock2 = buffer.readBlock32();
  print('dataBlock2: $dataBlock2');

  // The position after read the data block:
  print('position: ${buffer.position}');

  // The remaining bytes in the buffer:
  var tailBytes = buffer.readRemainingBytes();
  print('tailBytes: $tailBytes');
}

OUTPUT:

length: 34
n32: 0x10203040
s: Hello!
n64: 9223372036854775807
position: 22
dataBlock2: [110, 120, 130, 140, 150, 160]
position: 32
tailBytes: [210, 220]

Browser/JavaScript compatibility

All the operations are tested to be compatible with JavaScript.

Note that JS only supports 53-bits integers. To avoid any issue serializing 64-bits integers, try to use BigInt serialization, or ensure that you are bellow the 53-bits range.

See the class DataSerializerPlatform if you need runtime information about integers support.

Test Coverage

Codecov

This package aims to always have a high test coverage percentage, over 95%. With that the package can be a reliable tool to support your important projects.

Source

The official source code is hosted @ GitHub:

• https://github.com/gmpassos/data_serializer

Features and bugs

Please file feature requests and bugs at the issue tracker.

Contribution

Any help from the open-source community is always welcome and needed:

• Found an issue?
  • Please fill a bug report with details.
• Wish a feature?
  • Open a feature request with use cases.
• Are you using and liking the project?
  • Promote the project: create an article, do a post or make a donation.
• Are you a developer?
  • Fix a bug and send a pull request.
  • Implement a new feature.
  • Improve the Unit Tests.
• Have you already helped in any way?
  • Many thanks from me, the contributors and everybody that uses this project!

If you donate 1 hour of your time, you can contribute a lot, because others will do the same, just be part and start with your 1 hour.

Author

Graciliano M. Passos: gmpassos@GitHub.

License

Apache License - Version 2.0