jtar

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JTar is a simple Java Tar library, that provides an easy way to create and read tar files using IO streams. The API is very simple to use and similar to the java.util.zip package.

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# Overview
JTar is a simple Java Tar library, that provides an easy way to create and read tar files using IO streams. The API is very simple to use and similar to the _java.util.zip_ package and also __supports UStar format__.

[![Build Status](https://travis-ci.org/kamranzafar/jtar.png?branch=master)](https://travis-ci.org/kamranzafar/jtar)

## Usage
JTar is available in maven central and can be added as a dependency in the maven project.
<pre><code>  &lt;dependency&gt;
    &lt;groupId&gt;org.kamranzafar&lt;/groupId&gt;
    &lt;artifactId&gt;jtar&lt;/artifactId&gt;
    &lt;version&gt;2.3&lt;/version&gt;
  &lt;/dependency&gt;
</code></pre>

Below are some examples of using jtar in applications

### Tar example - using TarOutputStream
<pre><code>  // Output file stream
  FileOutputStream dest = new FileOutputStream( "c:/test/test.tar" );
  
  // Create a TarOutputStream
  TarOutputStream out = new TarOutputStream( new BufferedOutputStream( dest ) );
  
  // Files to tar
  File[] filesToTar=new File[2];
  filesToTar[0]=new File("c:/test/myfile1.txt");
  filesToTar[1]=new File("c:/test/myfile2.txt");
  
  for(File f:filesToTar){
     out.putNextEntry(new TarEntry(f, f.getName()));
     BufferedInputStream origin = new BufferedInputStream(new FileInputStream( f ));
     int count;
     byte data[] = new byte[2048];
  
     while((count = origin.read(data)) != -1) {
        out.write(data, 0, count);
     }
  
     out.flush();
     origin.close();
  }
  
  out.close();
</code></pre>

### Untar example - using TarInputStream
<pre><code>  String tarFile = "c:/test/test.tar";
  String destFolder = "c:/test/myfiles";
  
  // Create a TarInputStream
  TarInputStream tis = new TarInputStream(new BufferedInputStream(new FileInputStream(tarFile)));
  TarEntry entry;
  
  while((entry = tis.getNextEntry()) != null) {
     int count;
     byte data[] = new byte[2048];
     FileOutputStream fos = new FileOutputStream(destFolder + "/" + entry.getName());
     BufferedOutputStream dest = new BufferedOutputStream(fos);
  
     while((count = tis.read(data)) != -1) {
        dest.write(data, 0, count);
     }
  
     dest.flush();
     dest.close();
  }
  
  tis.close();
</code></pre>

___Tip: Always use buffered streams with jtar to speed up IO.___

## Examples and resources

* See [JTarTest](https://github.com/kamranzafar/jtar/blob/master/src/test/java/org/kamranzafar/jtar/JTarTest.java) class, provided with the source, for more detailed examples.
* Visit the wiki page for more details on [Tar format](http://en.wikipedia.org/wiki/Tar_%28file_format%29)

__JTar is available in [Maven Central](http://search.maven.org/#search%7Cga%7C1%7Cg%3A%22org.kamranzafar%22%20a%3A%22jtar%22)__

jtar

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