org.apache.tools.zip
Class GeneralPurposeBit

java.lang.Object
  org.apache.tools.zip.GeneralPurposeBit

public final class GeneralPurposeBit
extends java.lang.Object

Parser/encoder for the "general purpose bit" field in ZIP's local file and central directory headers.

Since:

Ant 1.9.0

Field Summary

static int

UFT8_NAMES_FLAG Indicates that filenames are written in utf-8.

Constructor Summary

GeneralPurposeBit()

Method Summary

byte[]	encode() Encodes the set bits in a form suitable for ZIP archives.
boolean	equals(java.lang.Object o)
int	hashCode()
static GeneralPurposeBit	parse(byte[] data, int offset) Parses the supported flags from the given archive data.
void	useDataDescriptor(boolean b) whether the current entry will use the data descriptor to store CRC and size information
void	useEncryption(boolean b) whether the current entry will be encrypted
boolean	usesDataDescriptor() whether the current entry uses the data descriptor to store CRC and size information
boolean	usesEncryption() whether the current entry is encrypted
boolean	usesStrongEncryption() whether the current entry is encrypted using strong encryption
void	useStrongEncryption(boolean b) whether the current entry will be encrypted using strong encryption
boolean	usesUTF8ForNames() whether the current entry uses UTF8 for file name and comment.
void	useUTF8ForNames(boolean b) whether the current entry will use UTF8 for file name and comment.

Methods inherited from class java.lang.Object

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

Field Detail

UFT8_NAMES_FLAG

public static final int UFT8_NAMES_FLAG

Indicates that filenames are written in utf-8.

The only reason this is public is that ZipOutputStream.EFS_FLAG was public in several versions of Apache Ant and we needed a substitute for it.

See Also:

Constant Field Values

Constructor Detail

GeneralPurposeBit

public GeneralPurposeBit()

Method Detail

usesUTF8ForNames

public boolean usesUTF8ForNames()

whether the current entry uses UTF8 for file name and comment.

useUTF8ForNames

public void useUTF8ForNames(boolean b)

whether the current entry will use UTF8 for file name and comment.

usesDataDescriptor

public boolean usesDataDescriptor()

whether the current entry uses the data descriptor to store CRC and size information

useDataDescriptor

public void useDataDescriptor(boolean b)

whether the current entry will use the data descriptor to store CRC and size information

usesEncryption

public boolean usesEncryption()

whether the current entry is encrypted

useEncryption

public void useEncryption(boolean b)

whether the current entry will be encrypted

usesStrongEncryption

public boolean usesStrongEncryption()

whether the current entry is encrypted using strong encryption

useStrongEncryption

public void useStrongEncryption(boolean b)

whether the current entry will be encrypted using strong encryption

encode

public byte[] encode()

Encodes the set bits in a form suitable for ZIP archives.

parse

public static GeneralPurposeBit parse(byte[] data,
                                      int offset)

Parses the supported flags from the given archive data.

Parameters:

data - local file header or a central directory entry.

offset - offset at which the general purpose bit starts

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object o)

Overrides:

equals in class java.lang.Object