org.apache.tools.zip
Class ZipEntry

java.lang.Object
  java.util.zip.ZipEntry
      org.apache.tools.zip.ZipEntry

All Implemented Interfaces:

java.lang.Cloneable

public class ZipEntry
extends java.util.zip.ZipEntry
implements java.lang.Cloneable

Extension that adds better handling of extra fields and provides access to the internal and external file attributes.

The extra data is expected to follow the recommendation of the .ZIP File Format Specification created by PKWARE Inc. :

• the extra byte array consists of a sequence of extra fields
• each extra fields starts by a two byte header id followed by a two byte sequence holding the length of the remainder of data.

Any extra data that cannot be parsed by the rules above will be consumed as "unparseable" extra data and treated differently by the methods of this class. Versions prior to Apache Commons Compress 1.1 would have thrown an exception if any attempt was made to read or write extra data not conforming to the recommendation.

See Also:

.ZIP File Format Specification

Field Summary

static int	CENATT
static int	CENATX
static int	CENCOM
static int	CENCRC
static int	CENDSK
static int	CENEXT
static int	CENFLG
static int	CENHDR
static int	CENHOW
static int	CENLEN
static int	CENNAM
static int	CENOFF
static long	CENSIG
static int	CENSIZ
static int	CENTIM
static int	CENVEM
static int	CENVER
static int	ENDCOM
static int	ENDHDR
static int	ENDOFF
static long	ENDSIG
static int	ENDSIZ
static int	ENDSUB
static int	ENDTOT
static int	EXTCRC
static int	EXTHDR
static int	EXTLEN
static long	EXTSIG
static int	EXTSIZ
static int	LOCCRC
static int	LOCEXT
static int	LOCFLG
static int	LOCHDR
static int	LOCHOW
static int	LOCLEN
static int	LOCNAM
static long	LOCSIG
static int	LOCSIZ
static int	LOCTIM
static int	LOCVER
static int	PLATFORM_FAT
static int	PLATFORM_UNIX

Fields inherited from class java.util.zip.ZipEntry

DEFLATED, STORED

Constructor Summary

protected	ZipEntry()
	ZipEntry(java.lang.String name) Creates a new zip entry with the specified name.
	ZipEntry(java.util.zip.ZipEntry entry) Creates a new zip entry with fields taken from the specified zip entry.
	ZipEntry(ZipEntry entry) Creates a new zip entry with fields taken from the specified zip entry.

Method Summary

void	addAsFirstExtraField(ZipExtraField ze) Adds an extra field - replacing an already present extra field of the same type.
void	addExtraField(ZipExtraField ze) Adds an extra field - replacing an already present extra field of the same type.
java.lang.Object	clone() Overwrite clone.
boolean	equals(java.lang.Object o) The equality method.
byte[]	getCentralDirectoryExtra() Retrieves the extra data for the central directory.
long	getExternalAttributes() Retrieves the external file attributes.
ZipExtraField	getExtraField(ZipShort type) Looks up an extra field by its header id.
ZipExtraField[]	getExtraFields() Retrieves all extra fields that have been parsed successfully.
ZipExtraField[]	getExtraFields(boolean includeUnparseable) Retrieves extra fields.
int	getInternalAttributes() Retrieves the internal file attributes.
byte[]	getLocalFileDataExtra() Retrieves the extra data for the local file data.
java.lang.String	getName() Get the name of the entry.
int	getPlatform() Platform specification to put into the "version made by" part of the central file header.
int	getUnixMode() Unix permission.
UnparseableExtraFieldData	getUnparseableExtraFieldData() Looks up extra field data that couldn't be parsed correctly.
int	hashCode() Get the hashCode of the entry.
boolean	isDirectory() Is this entry a directory?
void	removeExtraField(ZipShort type) Remove an extra field.
void	removeUnparseableExtraFieldData() Removes unparseable extra field data.
void	setCentralDirectoryExtra(byte[] b) Sets the central directory part of extra fields.
void	setComprSize(long size) Deprecated. since 1.7. Use setCompressedSize directly.
void	setExternalAttributes(long value) Sets the external file attributes.
protected void	setExtra() Unfortunately java.util.zip.ZipOutputStream seems to access the extra data directly, so overriding getExtra doesn't help - we need to modify super's data directly.
void	setExtra(byte[] extra) Parses the given bytes as extra field data and consumes any unparseable data as an UnparseableExtraFieldData instance.
void	setExtraFields(ZipExtraField[] fields) Replaces all currently attached extra fields with the new array.
void	setInternalAttributes(int value) Sets the internal file attributes.
protected void	setName(java.lang.String name) Set the name of the entry.
protected void	setPlatform(int platform) Set the platform (UNIX or FAT).
void	setUnixMode(int mode) Sets Unix permissions in a way that is understood by Info-Zip's unzip command.

Methods inherited from class java.util.zip.ZipEntry

getComment, getCompressedSize, getCrc, getExtra, getMethod, getSize, getTime, setComment, setCompressedSize, setCrc, setMethod, setSize, setTime, toString

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

PLATFORM_UNIX

public static final int PLATFORM_UNIX

See Also:

Constant Field Values

PLATFORM_FAT

public static final int PLATFORM_FAT

See Also:

Constant Field Values

LOCSIG

public static final long LOCSIG

See Also:

Constant Field Values

EXTSIG

public static final long EXTSIG

See Also:

Constant Field Values

CENSIG

public static final long CENSIG

See Also:

Constant Field Values

ENDSIG

public static final long ENDSIG

See Also:

Constant Field Values

LOCHDR

public static final int LOCHDR

See Also:

Constant Field Values

EXTHDR

public static final int EXTHDR

See Also:

Constant Field Values

CENHDR

public static final int CENHDR

See Also:

Constant Field Values

ENDHDR

public static final int ENDHDR

See Also:

Constant Field Values

LOCVER

public static final int LOCVER

See Also:

Constant Field Values

LOCFLG

public static final int LOCFLG

See Also:

Constant Field Values

LOCHOW

public static final int LOCHOW

See Also:

Constant Field Values

LOCTIM

public static final int LOCTIM

See Also:

Constant Field Values

LOCCRC

public static final int LOCCRC

See Also:

Constant Field Values

LOCSIZ

public static final int LOCSIZ

See Also:

Constant Field Values

LOCLEN

public static final int LOCLEN

See Also:

Constant Field Values

LOCNAM

public static final int LOCNAM

See Also:

Constant Field Values

LOCEXT

public static final int LOCEXT

See Also:

Constant Field Values

EXTCRC

public static final int EXTCRC

See Also:

Constant Field Values

EXTSIZ

public static final int EXTSIZ

See Also:

Constant Field Values

EXTLEN

public static final int EXTLEN

See Also:

Constant Field Values

CENVEM

public static final int CENVEM

See Also:

Constant Field Values

CENVER

public static final int CENVER

See Also:

Constant Field Values

CENFLG

public static final int CENFLG

See Also:

Constant Field Values

CENHOW

public static final int CENHOW

See Also:

Constant Field Values

CENTIM

public static final int CENTIM

See Also:

Constant Field Values

CENCRC

public static final int CENCRC

See Also:

Constant Field Values

CENSIZ

public static final int CENSIZ

See Also:

Constant Field Values

CENLEN

public static final int CENLEN

See Also:

Constant Field Values

CENNAM

public static final int CENNAM

See Also:

Constant Field Values

CENEXT

public static final int CENEXT

See Also:

Constant Field Values

CENCOM

public static final int CENCOM

See Also:

Constant Field Values

CENDSK

public static final int CENDSK

See Also:

Constant Field Values

CENATT

public static final int CENATT

See Also:

Constant Field Values

CENATX

public static final int CENATX

See Also:

Constant Field Values

CENOFF

public static final int CENOFF

See Also:

Constant Field Values

ENDSUB

public static final int ENDSUB

See Also:

Constant Field Values

ENDTOT

public static final int ENDTOT

See Also:

Constant Field Values

ENDSIZ

public static final int ENDSIZ

See Also:

Constant Field Values

ENDOFF

public static final int ENDOFF

See Also:

Constant Field Values

ENDCOM

public static final int ENDCOM

See Also:

Constant Field Values

Constructor Detail

ZipEntry

public ZipEntry(java.lang.String name)

Creates a new zip entry with the specified name.

Parameters:

name - the name of the entry

Since:

1.1

ZipEntry

public ZipEntry(java.util.zip.ZipEntry entry)
         throws java.util.zip.ZipException

Creates a new zip entry with fields taken from the specified zip entry.

Parameters:

entry - the entry to get fields from

Throws:

java.util.zip.ZipException - on error

Since:

1.1

ZipEntry

public ZipEntry(ZipEntry entry)
         throws java.util.zip.ZipException

Creates a new zip entry with fields taken from the specified zip entry.

Parameters:

entry - the entry to get fields from

Throws:

java.util.zip.ZipException - on error

Since:

1.1

ZipEntry

protected ZipEntry()

Since:

1.9

Method Detail

clone

public java.lang.Object clone()

Overwrite clone.

Overrides:

clone in class java.util.zip.ZipEntry

Returns:

a cloned copy of this ZipEntry

Since:

1.1

getInternalAttributes

public int getInternalAttributes()

Retrieves the internal file attributes.

Returns:

the internal file attributes

Since:

1.1

setInternalAttributes

public void setInternalAttributes(int value)

Sets the internal file attributes.

Parameters:

value - an int value

Since:

1.1

getExternalAttributes

public long getExternalAttributes()

Retrieves the external file attributes.

Returns:

the external file attributes

Since:

1.1

setExternalAttributes

public void setExternalAttributes(long value)

Sets the external file attributes.

Parameters:

value - an long value

Since:

1.1

setUnixMode

public void setUnixMode(int mode)

Sets Unix permissions in a way that is understood by Info-Zip's unzip command.

Parameters:

mode - an int value

Since:

Ant 1.5.2

getUnixMode

public int getUnixMode()

Unix permission.

Returns:

the unix permissions

Since:

Ant 1.6

getPlatform

public int getPlatform()

Platform specification to put into the "version made by" part of the central file header.

Returns:

PLATFORM_FAT unless setUnixMode has been called, in which case PLATORM_UNIX will be returned.

Since:

Ant 1.5.2

setPlatform

protected void setPlatform(int platform)

Set the platform (UNIX or FAT).

Parameters:

platform - an int value - 0 is FAT, 3 is UNIX

Since:

1.9

setExtraFields

public void setExtraFields(ZipExtraField[] fields)

Replaces all currently attached extra fields with the new array.

Parameters:

fields - an array of extra fields

Since:

1.1

getExtraFields

public ZipExtraField[] getExtraFields()

Retrieves all extra fields that have been parsed successfully.

Returns:

an array of the extra fields

getExtraFields

public ZipExtraField[] getExtraFields(boolean includeUnparseable)

Retrieves extra fields.

Parameters:

includeUnparseable - whether to also return unparseable extra fields as UnparseableExtraFieldData if such data exists.

Returns:

an array of the extra fields

Since:

1.1

addExtraField

public void addExtraField(ZipExtraField ze)

Adds an extra field - replacing an already present extra field of the same type.

If no extra field of the same type exists, the field will be added as last field.

Parameters:

ze - an extra field

Since:

1.1

addAsFirstExtraField

public void addAsFirstExtraField(ZipExtraField ze)

Adds an extra field - replacing an already present extra field of the same type.

The new extra field will be the first one.

Parameters:

ze - an extra field

Since:

1.1

removeExtraField

public void removeExtraField(ZipShort type)

Remove an extra field.

Parameters:

type - the type of extra field to remove

Since:

1.1

removeUnparseableExtraFieldData

public void removeUnparseableExtraFieldData()

Removes unparseable extra field data.

getExtraField

public ZipExtraField getExtraField(ZipShort type)

Looks up an extra field by its header id.

Returns:

null if no such field exists.

getUnparseableExtraFieldData

public UnparseableExtraFieldData getUnparseableExtraFieldData()

Looks up extra field data that couldn't be parsed correctly.

Returns:

null if no such field exists.

setExtra

public void setExtra(byte[] extra)
              throws java.lang.RuntimeException

Parses the given bytes as extra field data and consumes any unparseable data as an UnparseableExtraFieldData instance.

Overrides:

setExtra in class java.util.zip.ZipEntry

Parameters:

extra - an array of bytes to be parsed into extra fields

Throws:

java.lang.RuntimeException - if the bytes cannot be parsed

java.lang.RuntimeException - on error

Since:

1.1

setExtra

protected void setExtra()

Unfortunately java.util.zip.ZipOutputStream seems to access the extra data directly, so overriding getExtra doesn't help - we need to modify super's data directly.

Since:

1.1

setCentralDirectoryExtra

public void setCentralDirectoryExtra(byte[] b)

Sets the central directory part of extra fields.

getLocalFileDataExtra

public byte[] getLocalFileDataExtra()

Retrieves the extra data for the local file data.

Returns:

the extra data for local file

Since:

1.1

getCentralDirectoryExtra

public byte[] getCentralDirectoryExtra()

Retrieves the extra data for the central directory.

Returns:

the central directory extra data

Since:

1.1

setComprSize

public void setComprSize(long size)

Deprecated. since 1.7. Use setCompressedSize directly.

Make this class work in JDK 1.1 like a 1.2 class.

This either stores the size for later usage or invokes setCompressedSize via reflection.

Parameters:

size - the size to use

Since:

1.2

getName

public java.lang.String getName()

Get the name of the entry.

Overrides:

getName in class java.util.zip.ZipEntry

Returns:

the entry name

Since:

1.9

isDirectory

public boolean isDirectory()

Is this entry a directory?

Overrides:

isDirectory in class java.util.zip.ZipEntry

Returns:

true if the entry is a directory

Since:

1.10

setName

protected void setName(java.lang.String name)

Set the name of the entry.

Parameters:

name - the name to use

hashCode

public int hashCode()

Get the hashCode of the entry. This uses the name as the hashcode.

Overrides:

hashCode in class java.util.zip.ZipEntry

Returns:

a hashcode.

Since:

Ant 1.7

equals

public boolean equals(java.lang.Object o)

The equality method. In this case, the implementation returns 'this == o' which is basically the equals method of the Object class.

Overrides:

equals in class java.lang.Object

Parameters:

o - the object to compare to

Returns:

true if this object is the same as o

Since:

Ant 1.7