archive 1.0.2

Provides encoders and decoders for various archive and compression formats, such as zip and tar.

archive

##Overview

A Dart library to encode and decode various archive and compression formats.

The library has no reliance on dart:io, so it can be used for both server and web applications. The archive library currently supports the following decoders:

• Zip (Archive)
• Tar (Archive)
• ZLib [Inflate decompression]
• GZip [Inflate decompression]

And the following encoders:

• Tar (Archive)
• ZLib [Deflate compression]
• GZip [Deflate compression]
• TODO: Zip

##Sample

Extract the contents of a Zip file, and encode the contents into a Tar file:

import 'dart:io' as Io;
import 'package:archive/archive.dart';
void main() {
  // Read the Zip file from disk.
  Io.File file = new Io.File('test.zip');
  file.openSync();
  var bytes = file.readAsBytesSync();
  if (bytes == null) {
    return;
  }
  
  // Decode the Zip file
  var zip = new ZipArchive();
  Archive archive = zip.decode(bytes);
  
  // Extract the contents of the Zip archive to disk.
  for (int i = 0; i < archive.numberOfFiles(); ++i) {
    String filename = archive.fileName(i);
    List<int> data = archive.fileData(i);
    Io.File fp = new Io.File('out/' + filename);
    fp.createSync(recursive: true);
    fp.writeAsBytesSync(data);
  }
  
  // Encode the archive as a Tar file.
  var tar = new TarArchive();
  List<int> tar_data = tar.encode(archive);
  
  // Write the tar file to disk.
  Io.File fp = new Io.File(filename + '.tar');
  fp.createSync(recursive: true);
  fp.writeAsBytesSync(tar_data);
}