org.apache.tools.zip

Class AbstractUnicodeExtraField

java.lang.Object

org.apache.tools.zip.AbstractUnicodeExtraField

All Implemented Interfaces:

ZipExtraField

Direct Known Subclasses:

UnicodeCommentExtraField, UnicodePathExtraField

public abstract class AbstractUnicodeExtraField
extends Object
implements ZipExtraField

A common base class for Unicode extra information extra fields.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractUnicodeExtraField()
protected	AbstractUnicodeExtraField(String text, byte[] bytes) Assemble as unicode extension from the name/comment and encoding of the original zip entry.
protected	AbstractUnicodeExtraField(String text, byte[] bytes, int off, int len) Assemble as unicode extension from the name/comment and encoding of the original zip entry.

Method Summary

Modifier and Type	Method and Description
byte[]	getCentralDirectoryData() The actual data to put into 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.
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.
long	getNameCRC32()
byte[]	getUnicodeName()
void	parseFromLocalFileData(byte[] buffer, int offset, int length) Populate data from this array as if it was in local file data.
void	setNameCRC32(long nameCRC32)
void	setUnicodeName(byte[] unicodeName)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.tools.zip.ZipExtraField

getHeaderId

Constructor Detail

AbstractUnicodeExtraField

protected AbstractUnicodeExtraField()

AbstractUnicodeExtraField

protected AbstractUnicodeExtraField(String text,
                                    byte[] bytes)

Assemble as unicode extension from the name/comment and encoding of the original zip entry.

Parameters:

text - The file name or comment.

bytes - The encoded of the filename or comment in the zip file.

AbstractUnicodeExtraField

protected AbstractUnicodeExtraField(String text,
                                    byte[] bytes,
                                    int off,
                                    int len)

Assemble as unicode extension from the name/comment and encoding of the original zip entry.

Parameters:

text - The file name or comment.

bytes - The encoded of the filename or comment in the zip file.

off - The offset of the encoded filename or comment in bytes.

len - The length of the encoded filename or commentin bytes.

Method Detail

getCentralDirectoryData

public byte[] getCentralDirectoryData()

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

Specified by:

getCentralDirectoryData in interface ZipExtraField

Returns:

the data

getCentralDirectoryLength

public ZipShort getCentralDirectoryLength()

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

Specified by:

getCentralDirectoryLength in interface ZipExtraField

Returns:

the length of the field in the central directory

getLocalFileDataData

public byte[] getLocalFileDataData()

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

Specified by:

getLocalFileDataData in interface ZipExtraField

Returns:

the data

getLocalFileDataLength

public ZipShort getLocalFileDataLength()

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

Specified by:

getLocalFileDataLength in interface ZipExtraField

Returns:

the length of the field in the local file data

getNameCRC32

public long getNameCRC32()

Returns:

The CRC32 checksum of the filename or comment as encoded in the central directory of the zip file.

getUnicodeName

public byte[] getUnicodeName()

Returns:

The utf-8 encoded name.

parseFromLocalFileData

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

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

Specified by:

parseFromLocalFileData in interface ZipExtraField

Parameters:

buffer - 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

setNameCRC32

public void setNameCRC32(long nameCRC32)

Parameters:

nameCRC32 - The CRC32 checksum of the filename as encoded in the central directory of the zip file to set.

setUnicodeName

public void setUnicodeName(byte[] unicodeName)

Parameters:

unicodeName - The utf-8 encoded name to set.