java.lang.Object
- org.apache.commons.compress.archivers.zip.X7875_NewUnix

All Implemented Interfaces:: Serializable, Cloneable, ZipExtraField

public class X7875_NewUnix
extends Object
implements ZipExtraField, Cloneable, Serializable

An extra field that stores UNIX UID/GID data (owner & group ownership) for a given zip entry. We're using the field definition given in Info-Zip's source archive: zip-3.0.tar.gz/proginfo/extrafld.txt

 Local-header version:

 Value         Size        Description
 -----         ----        -----------
 0x7875        Short       tag for this extra block type ("ux")
 TSize         Short       total data size for this block
 Version       1 byte      version of this extra field, currently 1
 UIDSize       1 byte      Size of UID field
 UID           Variable    UID for this entry (little endian)
 GIDSize       1 byte      Size of GID field
 GID           Variable    GID for this entry (little endian)

 Central-header version:

 Value         Size        Description
 -----         ----        -----------
 0x7855        Short       tag for this extra block type ("Ux")
 TSize         Short       total data size for this block (0)

Since:: 1.5
See Also:: Serialized Form

Field Summary
- Fields inherited from interface org.apache.commons.compress.archivers.zip.ZipExtraField
  EXTRAFIELD_HEADER_SIZE

Constructor Summary

Constructors
Constructor Description

X7875_NewUnix()
Constructor for X7875_NewUnix.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Object`	`clone()`
`boolean`	`equals(Object o)`
`byte[]`	`getCentralDirectoryData()`	The actual data to put into central directory data - without Header-ID or length specifier.
`ZipShort`	`getCentralDirectoryLength()`	Length of the extra field in the central directory data - without Header-ID or length specifier.
`long`	`getGID()`	Gets the GID as a long.
`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.
`long`	`getUID()`	Gets the UID as a long.
`int`	`hashCode()`
`void`	`parseFromCentralDirectoryData(byte[] buffer, int offset, int length)`	Doesn't do anything since this class doesn't store anything inside the central directory.
`void`	`parseFromLocalFileData(byte[] data, int offset, int length)`	Populate data from this array as if it was in local file data.
`void`	`setGID(long l)`	Sets the GID.
`void`	`setUID(long l)`	Sets the UID.
`String`	`toString()`	Returns a String representation of this class useful for debugging purposes.

Methods inherited from class java.lang.Object
finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - X7875_NewUnix
```
public X7875_NewUnix()
```
    Constructor for X7875_NewUnix.
- Method Detail
  - getHeaderId
```
public ZipShort getHeaderId()
```
    The Header-ID.
    
    Specified by:
    
    getHeaderId in interface ZipExtraField
    
    Returns:
    
    the value for the header id for this extrafield
  - getUID
```
public long getUID()
```
    Gets the UID as a long. UID is typically a 32 bit unsigned value on most UNIX systems, so we return a long to avoid integer overflow into the negatives in case values above and including 2^31 are being used.
    
    Returns:
    
    the UID value.
  - getGID
```
public long getGID()
```
    Gets the GID as a long. GID is typically a 32 bit unsigned value on most UNIX systems, so we return a long to avoid integer overflow into the negatives in case values above and including 2^31 are being used.
    
    Returns:
    
    the GID value.
  - setUID
```
public void setUID(long l)
```
    Sets the UID.
    
    Parameters:
    
    l - UID value to set on this extra field.
  - setGID
```
public void setGID(long l)
```
    Sets the GID.
    
    Parameters:
    
    l - GID value to set on this extra field.
  - 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:
    
    a ZipShort for the length of the data of this extra field
  - getCentralDirectoryLength
```
public ZipShort getCentralDirectoryLength()
```
    Length of the extra field in the central directory data - without Header-ID or length specifier.
    
    Specified by:
    
    getCentralDirectoryLength in interface ZipExtraField
    
    Returns:
    
    a ZipShort for the length of the data of this extra field
  - 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:
    
    get the data
  - getCentralDirectoryData
```
public byte[] getCentralDirectoryData()
```
    The actual data to put into central directory data - without Header-ID or length specifier.
    
    Specified by:
    
    getCentralDirectoryData in interface ZipExtraField
    
    Returns:
    
    get the data
  - parseFromLocalFileData
```
public void parseFromLocalFileData(byte[] data,
                                   int offset,
                                   int length)
                            throws ZipException
```
    Populate data from this array as if it was in local file data.
    
    Specified by:
    
    parseFromLocalFileData in interface ZipExtraField
    
    Parameters:
    
    data - an array of bytes
    
    offset - the start offset
    
    length - the number of bytes in the array from offset
    
    Throws:
    
    ZipException - on error
  - parseFromCentralDirectoryData
```
public void parseFromCentralDirectoryData(byte[] buffer,
                                          int offset,
                                          int length)
                                   throws ZipException
```
    Doesn't do anything since this class doesn't store anything inside the central directory.
    
    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
  - toString
```
public String toString()
```
    Returns a String representation of this class useful for debugging purposes.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    
    A String representation of this class useful for debugging purposes.
  - clone
```
public Object clone()
             throws CloneNotSupportedException
```
    Overrides:
    
    clone in class Object
    
    Throws:
    
    CloneNotSupportedException
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object

Class X7875_NewUnix

Field Summary

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

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

X7875_NewUnix

Method Detail

getHeaderId

getUID

getGID

setUID

setGID

getLocalFileDataLength

getCentralDirectoryLength

getLocalFileDataData

getCentralDirectoryData

parseFromLocalFileData

parseFromCentralDirectoryData

toString

clone

equals

hashCode