Package org.apache.commons.compress.archivers.zip

Class AbstractUnicodeExtraField

java.lang.Object

org.apache.commons.compress.archivers.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.

This class is not thread-safe

Field Summary

Fields inherited from interface org.apache.commons.compress.archivers.zip.ZipExtraField

EXTRAFIELD_HEADER_SIZE

Constructor Summary

Constructors

Modifier	Constructor	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	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	parseFromCentralDirectoryData(byte[] buffer, int offset, int length)	Doesn't do anything special since this class always uses the same data in central directory and local file data.
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, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.commons.compress.archivers.zip.ZipExtraField

getHeaderId

Constructor Details

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 file name 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 file name or comment in the ZIP file.

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

len - The length of the encoded file name or comment in bytes.

Method Details

getCentralDirectoryData

public byte[] getCentralDirectoryData()

Description copied from interface: ZipExtraField

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()

Description copied from interface: ZipExtraField

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()

Description copied from interface: ZipExtraField

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()

Description copied from interface: ZipExtraField

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 file name or comment as encoded in the central directory of the ZIP file.

getUnicodeName

public byte[] getUnicodeName()

Returns:

The UTF-8 encoded name.

parseFromCentralDirectoryData

public void parseFromCentralDirectoryData(byte[] buffer,
 int offset,
 int length)
                                   throws ZipException

Doesn't do anything special since this class always uses the same data in central directory and local file data.

Specified by:

parseFromCentralDirectoryData in interface ZipExtraField

Parameters:

buffer - the buffer to read data from

offset - offset into buffer to read data

length - the length of data

Throws:

ZipException - on error

parseFromLocalFileData

public void parseFromLocalFileData(byte[] buffer,
 int offset,
 int length)
                            throws ZipException

Description copied from interface: ZipExtraField

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

Specified by:

parseFromLocalFileData in interface ZipExtraField

Parameters:

buffer - the buffer to read data from

offset - offset into buffer to read data

length - the length of data

Throws:

ZipException - on error

setNameCRC32

public void setNameCRC32(long nameCRC32)

Parameters:

nameCRC32 - The CRC32 checksum of the file name 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.