Package org.apache.tools.ant.taskdefs

## Class GUnzip

- java.lang.Object
- - org.apache.tools.ant.ProjectComponent
  - - org.apache.tools.ant.Task
    - - org.apache.tools.ant.taskdefs.Unpack
      - - org.apache.tools.ant.taskdefs.GUnzip

All Implemented Interfaces:
  `java.lang.Cloneable`

    public class GUnzip
    extends Unpack

Expands a file that has been compressed with the GZIP algorithm. Normally used to compress non-compressed archives such as TAR files.

Since:
  Ant 1.1

### Field Summary

### Fields inherited from class org.apache.tools.ant.taskdefs.Unpack

`dest, source, srcResource`

### Fields inherited from class org.apache.tools.ant.Task

`target, taskName, taskType, wrapper`

### Fields inherited from class org.apache.tools.ant.ProjectComponent

`description, location, project`

### Constructor Summary

Constructors
`GUnzip()`

### Method Summary

All Methods Instance Methods Concrete Methods
`protected void` `extract()` Implement the gunzipping.
`protected java.lang.String` `getDefaultExtension()` Get the default extension.
`protected boolean` `supportsNonFileResources()` Whether this task can deal with non-file resources.

### Methods inherited from class org.apache.tools.ant.taskdefs.Unpack

`addConfigured, execute, setDest, setDest, setSrc, setSrc, setSrcResource`

### Methods inherited from class org.apache.tools.ant.Task

`bindToOwner, getOwningTarget, getRuntimeConfigurableWrapper, getTaskName, getTaskType, getWrapper, handleErrorFlush, handleErrorOutput, handleFlush, handleInput, handleOutput, init, isInvalid, log, log, log, log, maybeConfigure, perform, reconfigure, setOwningTarget, setRuntimeConfigurableWrapper, setTaskName, setTaskType`

### Methods inherited from class org.apache.tools.ant.ProjectComponent

`clone, getDescription, getLocation, getProject, setDescription, setLocation, setProject`

### Methods inherited from class java.lang.Object

`equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

### Constructor Detail

#### GUnzip

    public GUnzip()

### Method Detail

#### getDefaultExtension

    protected java.lang.String getDefaultExtension()

Get the default extension.

Specified by:
  `getDefaultExtension` in class `Unpack`
Returns:
  the value ".gz"

#### extract

    protected void extract()

Implement the gunzipping.

Specified by:
  `extract` in class `Unpack`

#### supportsNonFileResources

    protected boolean supportsNonFileResources()

Whether this task can deal with non-file resources.

This implementation returns true only if this task is <gunzip>. Any subclass of this class that also wants to support non-file resources needs to override this method. We need to do so for backwards compatibility reasons since we can't expect subclasses to support resources.

Overrides:
  `supportsNonFileResources` in class `Unpack`
Returns:
  true if this task supports non file resources.
Since:
  Ant 1.7