org.apache.tools.zip
Interface ZipExtraField

All Known Implementing Classes:

AsiExtraField, JarMarker, UnrecognizedExtraField

public interface ZipExtraField

General format of extra field data.

Extra fields usually appear twice per file, once in the local file data and once in the central directory. Usually they are the same, but they don't have to be. java.util.zip.ZipOutputStream will only use the local file data in both places.

Method Summary

byte[]	getCentralDirectoryData() The actual data to put central directory - without Header-ID or length specifier.
ZipShort	getCentralDirectoryLength() Length of the extra field in the central directory - without Header-ID or length specifier.
ZipShort	getHeaderId() The Header-ID.
byte[]	getLocalFileDataData() The actual data to put into local file data - without Header-ID or length specifier.
ZipShort	getLocalFileDataLength() Length of the extra field in the local file data - without Header-ID or length specifier.
void	parseFromLocalFileData(byte[] data, int offset, int length) Populate data from this array as if it was in local file data.

Method Detail

getHeaderId

ZipShort getHeaderId()

The Header-ID.

Returns:

the header id

Since:

1.1

getLocalFileDataLength

ZipShort getLocalFileDataLength()

Length of the extra field in the local file data - without Header-ID or length specifier.

Returns:

the length of the field in the local file data

Since:

1.1

getCentralDirectoryLength

ZipShort getCentralDirectoryLength()

Length of the extra field in the central directory - without Header-ID or length specifier.

Returns:

the length of the field in the central directory

Since:

1.1

getLocalFileDataData

byte[] getLocalFileDataData()

The actual data to put into local file data - without Header-ID or length specifier.

Returns:

the data

Since:

1.1

getCentralDirectoryData

byte[] getCentralDirectoryData()

The actual data to put central directory - without Header-ID or length specifier.

Returns:

the data

Since:

1.1

parseFromLocalFileData

void parseFromLocalFileData(byte[] data,
                            int offset,
                            int length)
                            throws java.util.zip.ZipException

Populate data from this array as if it was in local file data.

Parameters:

data - an array of bytes

offset - the start offset

length - the number of bytes in the array from offset

Throws:

java.util.zip.ZipException - on error

Since:

1.1