org.at4j.zip.ef
Class NewInfoZipUnixExtraField

java.lang.Object
  org.at4j.zip.ef.NewInfoZipUnixExtraField

All Implemented Interfaces:

ZipEntryExtraField

public class NewInfoZipUnixExtraField
extends Object
implements ZipEntryExtraField

This, the "Unix2" Zip entry extra field, contains information on the owner UID/GID of the Zip entry.

The local header version contains UID/GID information. The central header version is empty.

Since:

1.0

Author:

Karl Gustafsson

See Also:

NewInfoZipUnixExtraFieldFactory, InfoZipUnixExtraField

Field Summary

static NewInfoZipUnixExtraField	CENTRAL_HEADER_VERSION This is the central header version of this extra field.
static UnsignedShort	CODE

Constructor Summary

NewInfoZipUnixExtraField(UnsignedShort uid, UnsignedShort gid)
This creates the local header version of this extra field.

Method Summary

byte[]	encode(ZipBuilderConfiguration builder) Encode this extra field's data for storing in a Zip file.
boolean	equals(Object o)
UnsignedShort	getGid() Get the owner group id for the Zip entry.
UnsignedShort	getUid() Get the owner user id for the Zip entry.
int	hashCode()
boolean	isInLocalHeader() Is this field stored in the Zip entry's local header or in the Zip file's central directory record?
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

CODE

public static final UnsignedShort CODE

CENTRAL_HEADER_VERSION

public static final NewInfoZipUnixExtraField CENTRAL_HEADER_VERSION

This is the central header version of this extra field. It does not contain any information.

Constructor Detail

NewInfoZipUnixExtraField

public NewInfoZipUnixExtraField(UnsignedShort uid,
                                UnsignedShort gid)

This creates the local header version of this extra field.

Parameters:

uid - The owner user id.

gid - The owner group id.

Method Detail

isInLocalHeader

public boolean isInLocalHeader()

Description copied from interface: ZipEntryExtraField

Is this field stored in the Zip entry's local header or in the Zip file's central directory record?

The same ZipEntryExtraField type may have different properties depending on if it is specified in the local or in the central header.

Specified by:

isInLocalHeader in interface ZipEntryExtraField

Returns:

true if this extra field comes from the Zip entry's local header. false if it comes from the Zip file's central directory.

getUid

public UnsignedShort getUid()

Get the owner user id for the Zip entry.

Returns:

The owner user id, or null if this is the central header version of this object.

getGid

public UnsignedShort getGid()

Get the owner group id for the Zip entry.

Returns:

The owner group id, or null if this is the central header version of this object.

encode

public byte[] encode(ZipBuilderConfiguration builder)

Description copied from interface: ZipEntryExtraField

Encode this extra field's data for storing in a Zip file. This is used when building Zip files.

Specified by:

encode in interface ZipEntryExtraField

Parameters:

builder - The configuration for the Zip builder object that is building the Zip file.

Returns:

A byte array containing the extra field data as it should be stored in the Zip file. The returned array should not contain the initial four bytes with the extra field code and the extra field length.

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object