TarHeader (ShrinkWrap Implementation Base 1.1.1 API)

java.lang.Object
- org.jboss.shrinkwrap.impl.base.io.tar.TarHeader

All Implemented Interfaces:

Cloneable
```
public class TarHeader
extends Object
implements Cloneable
```
This class encapsulates the Tar Entry Header used in Tar Archives. The class also holds a number of tar constants, used mostly in headers.

Author:

Timothy Gerard Endres,

Field Summary

Fields
Modifier and Type	Field and Description
`int`	`checkSum` The entry's checksum.
`static int`	`CHKSUMLEN` The length of the checksum field in a header buffer.
`static int`	`DEVLEN` The length of the devices field in a header buffer.
`int`	`devMajor` The entry's major device number.
`int`	`devMinor` The entry's minor device number.
`static int`	`GIDLEN` The length of the group id field in a header buffer.
`static int`	`GNAMELEN` The length of the group name field in a header buffer.
`static String`	`GNU_TMAGIC` The magic tag representing a GNU tar archive.
`int`	`groupId` The entry's group id.
`StringBuffer`	`groupName` The entry's group name.
`static byte`	`LF_BLK` Block device file type.
`static byte`	`LF_CHR` Character device file type.
`static byte`	`LF_CONTIG` Contiguous file type.
`static byte`	`LF_DIR` Directory file type.
`static byte`	`LF_FIFO` FIFO (pipe) file type.
`static byte`	`LF_LINK` Link file type.
`static byte`	`LF_NORMAL` Normal file type.
`static byte`	`LF_OLDNORM` LF_ constants represent the "link flag" of an entry, or more commonly, the "entry type".
`static byte`	`LF_SYMLINK` Symbolic link file type.
`byte`	`linkFlag` The entry's link flag.
`StringBuffer`	`linkName` The entry's link name.
`StringBuffer`	`magic` The entry's magic tag.
`static int`	`MAGICLEN` The length of the magic field in a header buffer.
`int`	`mode` The entry's permission mode.
`static int`	`MODELEN` The length of the mode field in a header buffer.
`long`	`modTime` The entry's modification time.
`static int`	`MODTIMELEN` The length of the modification time field in a header buffer.
`StringBuffer`	`name` The entry's name.
`static int`	`NAMELEN` The length of the name field in a header buffer.
`static int`	`NAMEOFFSET` The offset of the name field in a header buffer.
`static int`	`PREFIXLEN` The length of the name prefix field in a header buffer.
`static int`	`PREFIXOFFSET` The offset of the name prefix field in a header buffer.
`long`	`size` The entry's size.
`static int`	`SIZELEN` The length of the size field in a header buffer.
`static String`	`TMAGIC` The magic tag representing a POSIX tar archive.
`static int`	`UIDLEN` The length of the user id field in a header buffer.
`static int`	`UNAMELEN` The length of the user name field in a header buffer.
`int`	`userId` The entry's user id.
`StringBuffer`	`userName` The entry's user name.

Constructor Summary

Constructors
Constructor and Description

TarHeader()

Constructors
Constructor and Description
`TarHeader()`

Method Summary

Methods
Modifier and Type	Method and Description
`Object`	`clone()` TarHeaders can be cloned.
`static int`	`getCheckSumOctalBytes(long value, byte[] buf, int offset, int length)` Parse the checksum octal integer from a header buffer.
`static int`	`getFileNameBytes(String newName, byte[] outbuf)` This method, like getNameBytes(), is intended to place a name into a TarHeader's buffer.
`static int`	`getLongOctalBytes(long value, byte[] buf, int offset, int length)` Parse an octal long integer from a header buffer.
`String`	`getName()` Get the name of this entry.
`static int`	`getNameBytes(StringBuffer name, byte[] buf, int offset, int length)` Move the bytes from the name StringBuffer into the header's buffer.
`static int`	`getOctalBytes(long value, byte[] buf, int offset, int length)` Parse an octal integer from a header buffer.
`static StringBuffer`	`parseFileName(byte[] header)` Parse a file name from a header buffer.
`static StringBuffer`	`parseName(byte[] header, int offset, int length)` Parse an entry name from a header buffer.
`static long`	`parseOctal(byte[] header, int offset, int length)` Parse an octal string from a header buffer.

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

- Field Detail
  - NAMELEN
```
public static final int NAMELEN
```
    The length of the name field in a header buffer.
    
    See Also:
    Constant Field Values
  - NAMEOFFSET
```
public static final int NAMEOFFSET
```
    The offset of the name field in a header buffer.
    
    See Also:
    Constant Field Values
  - PREFIXLEN
```
public static final int PREFIXLEN
```
    The length of the name prefix field in a header buffer.
    
    See Also:
    Constant Field Values
  - PREFIXOFFSET
```
public static final int PREFIXOFFSET
```
    The offset of the name prefix field in a header buffer.
    
    See Also:
    Constant Field Values
  - MODELEN
```
public static final int MODELEN
```
    The length of the mode field in a header buffer.
    
    See Also:
    Constant Field Values
  - UIDLEN
```
public static final int UIDLEN
```
    The length of the user id field in a header buffer.
    
    See Also:
    Constant Field Values
  - GIDLEN
```
public static final int GIDLEN
```
    The length of the group id field in a header buffer.
    
    See Also:
    Constant Field Values
  - CHKSUMLEN
```
public static final int CHKSUMLEN
```
    The length of the checksum field in a header buffer.
    
    See Also:
    Constant Field Values
  - SIZELEN
```
public static final int SIZELEN
```
    The length of the size field in a header buffer.
    
    See Also:
    Constant Field Values
  - MAGICLEN
```
public static final int MAGICLEN
```
    The length of the magic field in a header buffer.
    
    See Also:
    Constant Field Values
  - MODTIMELEN
```
public static final int MODTIMELEN
```
    The length of the modification time field in a header buffer.
    
    See Also:
    Constant Field Values
  - UNAMELEN
```
public static final int UNAMELEN
```
    The length of the user name field in a header buffer.
    
    See Also:
    Constant Field Values
  - GNAMELEN
```
public static final int GNAMELEN
```
    The length of the group name field in a header buffer.
    
    See Also:
    Constant Field Values
  - DEVLEN
```
public static final int DEVLEN
```
    The length of the devices field in a header buffer.
    
    See Also:
    Constant Field Values
  - LF_OLDNORM
```
public static final byte LF_OLDNORM
```
    LF_ constants represent the "link flag" of an entry, or more commonly, the "entry type". This is the "old way" of indicating a normal file.
    
    See Also:
    Constant Field Values
  - LF_NORMAL
```
public static final byte LF_NORMAL
```
    Normal file type.
    
    See Also:
    Constant Field Values
  - LF_LINK
```
public static final byte LF_LINK
```
    Link file type.
    
    See Also:
    Constant Field Values
  - LF_SYMLINK
```
public static final byte LF_SYMLINK
```
    Symbolic link file type.
    
    See Also:
    Constant Field Values
  - LF_CHR
```
public static final byte LF_CHR
```
    Character device file type.
    
    See Also:
    Constant Field Values
  - LF_BLK
```
public static final byte LF_BLK
```
    Block device file type.
    
    See Also:
    Constant Field Values
  - LF_DIR
```
public static final byte LF_DIR
```
    Directory file type.
    
    See Also:
    Constant Field Values
  - LF_FIFO
```
public static final byte LF_FIFO
```
    FIFO (pipe) file type.
    
    See Also:
    Constant Field Values
  - LF_CONTIG
```
public static final byte LF_CONTIG
```
    Contiguous file type.
    
    See Also:
    Constant Field Values
  - TMAGIC
```
public static final String TMAGIC
```
    The magic tag representing a POSIX tar archive.
    
    See Also:
    Constant Field Values
  - GNU_TMAGIC
```
public static final String GNU_TMAGIC
```
    The magic tag representing a GNU tar archive.
    
    See Also:
    Constant Field Values
  - name
```
public StringBuffer name
```
    The entry's name.
  - mode
```
public int mode
```
    The entry's permission mode.
  - userId
```
public int userId
```
    The entry's user id.
  - groupId
```
public int groupId
```
    The entry's group id.
  - size
```
public long size
```
    The entry's size.
  - modTime
```
public long modTime
```
    The entry's modification time.
  - checkSum
```
public int checkSum
```
    The entry's checksum.
  - linkFlag
```
public byte linkFlag
```
    The entry's link flag.
  - linkName
```
public StringBuffer linkName
```
    The entry's link name.
  - magic
```
public StringBuffer magic
```
    The entry's magic tag.
  - userName
```
public StringBuffer userName
```
    The entry's user name.
  - groupName
```
public StringBuffer groupName
```
    The entry's group name.
  - devMajor
```
public int devMajor
```
    The entry's major device number.
  - devMinor
```
public int devMinor
```
    The entry's minor device number.
- Constructor Detail
  - TarHeader
```
public TarHeader()
```
- Method Detail
  - clone
```
public Object clone()
```
    TarHeaders can be cloned.
    
    Overrides:
    
    clone in class Object
  - getName
```
public String getName()
```
    Get the name of this entry.
    
    Returns:
    Teh entry's name.
  - parseOctal
```
public static long parseOctal(byte[] header,
              int offset,
              int length)
                       throws InvalidHeaderException
```
    Parse an octal string from a header buffer. This is used for the file permission mode value.
    
    Parameters:
    header - The header buffer from which to parse.
    offset - The offset into the buffer from which to parse.
    length - The number of header bytes to parse.
    
    Returns:
    The long value of the octal string.
    
    Throws:
    
    InvalidHeaderException
  - parseFileName
```
public static StringBuffer parseFileName(byte[] header)
```
    Parse a file name from a header buffer. This is different from parseName() in that is recognizes 'ustar' names and will handle adding on the "prefix" field to the name. Contributed by Dmitri Tikhonov
    
    Parameters:
    header - The header buffer from which to parse.
    offset - The offset into the buffer from which to parse.
    length - The number of header bytes to parse.
    
    Returns:
    The header's entry name.
  - parseName
```
public static StringBuffer parseName(byte[] header,
                     int offset,
                     int length)
                              throws InvalidHeaderException
```
    Parse an entry name from a header buffer.
    
    Parameters:
    header - The header buffer from which to parse.
    offset - The offset into the buffer from which to parse.
    length - The number of header bytes to parse.
    
    Returns:
    The header's entry name.
    
    Throws:
    
    InvalidHeaderException
  - getFileNameBytes
```
public static int getFileNameBytes(String newName,
                   byte[] outbuf)
                            throws InvalidHeaderException
```
    This method, like getNameBytes(), is intended to place a name into a TarHeader's buffer. However, this method is sophisticated enough to recognize long names (name.length() > NAMELEN). In these cases, the method will break the name into a prefix and suffix and place the name in the header in 'ustar' format. It is up to the TarEntry to manage the "entry header format". This method assumes the name is valid for the type of archive being generated.
    
    Parameters:
    outbuf - The buffer containing the entry header to modify.
    newName - The new name to place into the header buffer.
    
    Returns:
    The current offset in the tar header (always TarHeader.NAMELEN).
    
    Throws:
    
    InvalidHeaderException - If the name will not fit in the header.
  - getNameBytes
```
public static int getNameBytes(StringBuffer name,
               byte[] buf,
               int offset,
               int length)
```
    Move the bytes from the name StringBuffer into the header's buffer.
    
    Parameters:
    header - The header buffer into which to copy the name.
    offset - The offset into the buffer at which to store.
    length - The number of header bytes to store.
    
    Returns:
    The new offset (offset + length).
  - getOctalBytes
```
public static int getOctalBytes(long value,
                byte[] buf,
                int offset,
                int length)
```
    Parse an octal integer from a header buffer.
    
    Parameters:
    header - The header buffer from which to parse.
    offset - The offset into the buffer from which to parse.
    length - The number of header bytes to parse.
    
    Returns:
    The integer value of the octal bytes.
  - getLongOctalBytes
```
public static int getLongOctalBytes(long value,
                    byte[] buf,
                    int offset,
                    int length)
```
    Parse an octal long integer from a header buffer.
    
    Parameters:
    header - The header buffer from which to parse.
    offset - The offset into the buffer from which to parse.
    length - The number of header bytes to parse.
    
    Returns:
    The long value of the octal bytes.
  - getCheckSumOctalBytes
```
public static int getCheckSumOctalBytes(long value,
                        byte[] buf,
                        int offset,
                        int length)
```
    Parse the checksum octal integer from a header buffer.
    
    Parameters:
    header - The header buffer from which to parse.
    offset - The offset into the buffer from which to parse.
    length - The number of header bytes to parse.
    
    Returns:
    The integer value of the entry's checksum.

Class TarHeader

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

NAMELEN

NAMEOFFSET

PREFIXLEN

PREFIXOFFSET

MODELEN

UIDLEN

GIDLEN

CHKSUMLEN

SIZELEN

MAGICLEN

MODTIMELEN

UNAMELEN

GNAMELEN

DEVLEN

LF_OLDNORM

LF_NORMAL

LF_LINK

LF_SYMLINK

LF_CHR

LF_BLK

LF_DIR

LF_FIFO

LF_CONTIG

TMAGIC

GNU_TMAGIC

name

mode

userId

groupId

size

modTime

checkSum

linkFlag

linkName

magic

userName

groupName

devMajor

devMinor

Constructor Detail

TarHeader

Method Detail

clone

getName

parseOctal

parseFileName

parseName

getFileNameBytes

getNameBytes

getOctalBytes

getLongOctalBytes

getCheckSumOctalBytes