de.schlichtherle.io.archive.tar
Class TarGZipDriver

java.lang.Object
  de.schlichtherle.io.archive.spi.AbstractArchiveDriver
      de.schlichtherle.io.archive.tar.TarDriver
          de.schlichtherle.io.archive.tar.TarGZipDriver

All Implemented Interfaces:

ArchiveDriver, Serializable

public class TarGZipDriver
extends TarDriver

An archive driver which builds TAR files compressed with GZIP. Instances of this class are immutable.

Since:

TrueZIP 6.0

Version:

$Id: TarGZipDriver.java 06f3ba684701 2010/11/04 01:15:55 christian $

Author:

Christian Schlichtherle

See Also:

Serialized Form

Nested Class Summary

static class

TarGZipDriver.GZIPOutputStream

Nested classes/interfaces inherited from class de.schlichtherle.io.archive.spi.AbstractArchiveDriver

AbstractArchiveDriver.InconsistentCharsetSupportError

Field Summary

private static int	BUFSIZE
static int	DEFAULT_LEVEL The default compression level to use when writing a GZIP output stream, which is 9.
private int	level
private static long	serialVersionUID

Fields inherited from class de.schlichtherle.io.archive.tar.TarDriver

DEFAULT_CHARSET, TEMP_FILE_PREFIX

Constructor Summary

TarGZipDriver()
Equivalent to this(DEFAULT_CHARSET, null, null, DEFAULT_LEVEL).

TarGZipDriver(int level)
Equivalent to this(DEFAULT_CHARSET, null, null, level).

TarGZipDriver(String charset)
Equivalent to this(charset, null, null, DEFAULT_LEVEL).

TarGZipDriver(String charset, Icon openIcon, Icon closedIcon, int level)
Constructs a new TAR.GZ driver.

Method Summary

protected InputStream	createInputStream(Archive archive, ReadOnlyFile rof) Returns a new InputStream to read the contents from the given ReadOnlyFile from.
protected TarOutputArchive	createTarOutputArchive(Archive archive, OutputStream out, TarInputArchive source)
int	getLevel() Returns the value of the property preambled which was provided to the constructor.

Methods inherited from class de.schlichtherle.io.archive.tar.TarDriver

createArchiveEntry, createInputArchive, createOutputArchive, createTarInputArchive

Methods inherited from class de.schlichtherle.io.archive.spi.AbstractArchiveDriver

ensureEncodable, getCharset, getClosedIcon, getEncoding, getOpenIcon

Methods inherited from class java.lang.Object

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

Methods inherited from interface de.schlichtherle.io.archive.spi.ArchiveDriver

equals, hashCode

Field Detail

serialVersionUID

private static final long serialVersionUID

See Also:

Constant Field Values

BUFSIZE

private static final int BUFSIZE

See Also:

Constant Field Values

DEFAULT_LEVEL

public static final int DEFAULT_LEVEL

The default compression level to use when writing a GZIP output stream, which is 9.

See Also:

Constant Field Values

level

private final int level

Constructor Detail

TarGZipDriver

public TarGZipDriver()

Equivalent to this(DEFAULT_CHARSET, null, null, DEFAULT_LEVEL).

TarGZipDriver

public TarGZipDriver(String charset)

Equivalent to this(charset, null, null, DEFAULT_LEVEL).

TarGZipDriver

public TarGZipDriver(int level)

Equivalent to this(DEFAULT_CHARSET, null, null, level).

TarGZipDriver

public TarGZipDriver(String charset,
                     Icon openIcon,
                     Icon closedIcon,
                     int level)

Constructs a new TAR.GZ driver.

Parameters:

level - The compression level to use when writing a GZIP output stream.

Throws:

IllegalArgumentException - If level is not in the range [1..9] and is not -1.

Method Detail

getLevel

public final int getLevel()

Returns the value of the property preambled which was provided to the constructor.

createInputStream

protected InputStream createInputStream(Archive archive,
                                        ReadOnlyFile rof)
                                 throws IOException

Description copied from class: TarDriver

Returns a new InputStream to read the contents from the given ReadOnlyFile from. Override this method in order to decorate the stream returned by the implementation in this class in order to have the driver read the TAR file from wrapper file formats such as GZIP or BZIP2.

Note that the returned stream should support marking for best performance and will always be closed early by TarDriver.createInputArchive(Archive, ReadOnlyFile).

Overrides:

createInputStream in class TarDriver

Throws:

IOException

createTarOutputArchive

protected TarOutputArchive createTarOutputArchive(Archive archive,
                                                  OutputStream out,
                                                  TarInputArchive source)
                                           throws IOException

Overrides:

createTarOutputArchive in class TarDriver

Throws:

IOException