org.apache.tools.zip

Class ExtraFieldUtils

public class ExtraFieldUtils extends Object

ZipExtraField related methods
Method Summary
static ZipExtraFieldcreateExtraField(ZipShort headerId)
Create an instance of the approriate ExtraField, falls back to UnrecognizedExtraField.
static byte[]mergeCentralDirectoryData(ZipExtraField[] data)
Merges the central directory fields of the given ZipExtraFields.
static byte[]mergeLocalFileDataData(ZipExtraField[] data)
Merges the local file data fields of the given ZipExtraFields.
static ZipExtraField[]parse(byte[] data)
Split the array into ExtraFields and populate them with the give data.
static voidregister(Class c)
Register a ZipExtraField implementation.

Method Detail

createExtraField

public static ZipExtraField createExtraField(ZipShort headerId)
Create an instance of the approriate ExtraField, falls back to UnrecognizedExtraField.

Parameters: headerId the header identifier

Returns: an instance of the appropiate ExtraField

Throws: InstantiationException if unable to instantiate the class IllegalAccessException if not allowed to instatiate the class

Since: 1.1

mergeCentralDirectoryData

public static byte[] mergeCentralDirectoryData(ZipExtraField[] data)
Merges the central directory fields of the given ZipExtraFields.

Parameters: data an array of ExtraFields

Returns: an array of bytes

Since: 1.1

mergeLocalFileDataData

public static byte[] mergeLocalFileDataData(ZipExtraField[] data)
Merges the local file data fields of the given ZipExtraFields.

Parameters: data an array of ExtraFiles

Returns: an array of bytes

Since: 1.1

parse

public static ZipExtraField[] parse(byte[] data)
Split the array into ExtraFields and populate them with the give data.

Parameters: data an array of bytes

Returns: an array of ExtraFields

Throws: ZipException on error

Since: 1.1

register

public static void register(Class c)
Register a ZipExtraField implementation.

The given class must have a no-arg constructor and implement the ZipExtraField interface.

Parameters: c the class to register

Since: 1.1