com.izforge.izpack.installer.multiunpacker
Class MultiVolumeFileUnpacker

java.lang.Object
  com.izforge.izpack.installer.unpacker.FileUnpacker
      com.izforge.izpack.installer.multiunpacker.MultiVolumeFileUnpacker

public class MultiVolumeFileUnpacker
extends FileUnpacker

A multi-volume file unpacker.

Author:

Tim Anderson

Constructor Summary

MultiVolumeFileUnpacker(FileSpanningInputStream volumes, Cancellable cancellable, FileQueue queue)
Constructs a MultiVolumeFileUnpacker.

Method Summary

protected void	skip(long bytes) Skips bytes in a stream.
void	unpack(PackFile packFile, InputStream packInputStream, File target) Unpacks a pack file.

Methods inherited from class com.izforge.izpack.installer.unpacker.FileUnpacker

copy, copy, getTarget, isQueued, postCopy, read, setLastModified

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiVolumeFileUnpacker

public MultiVolumeFileUnpacker(FileSpanningInputStream volumes,
                               Cancellable cancellable,
                               FileQueue queue)

Constructs a MultiVolumeFileUnpacker.

Parameters:

volumes - the input stream

cancellable - determines if unpacking should be cancelled

queue - the file queue. May be null

Method Detail

unpack

public void unpack(PackFile packFile,
                   InputStream packInputStream,
                   File target)
            throws IOException,
                   InstallerException

Unpacks a pack file.

Specified by:

unpack in class FileUnpacker

Parameters:

packFile - the pack file meta-data

packInputStream - the pack input stream

target - the target

Throws:

InterruptedIOException - if the unpack is cancelled

IOException - for any I/O error

InstallerException - for any installer exception

skip

protected void skip(long bytes)
             throws IOException

Skips bytes in a stream.

Parameters:

bytes - the no. of bytes to skip

Throws:

IOException - for any I/O error, or if the no. of bytes skipped doesn't match that expected