TarArchiveSparseEntry (Apache Ant API)
Description: declaration: package: org.apache.tools.tar, class: TarArchiveSparseEntry

Package org.apache.tools.tar

# Class TarArchiveSparseEntry

java.lang.Object
org.apache.tools.tar.TarArchiveSparseEntry

All Implemented Interfaces:
  `TarConstants`

public class TarArchiveSparseEntry extends Object implements TarConstants
This class represents a sparse entry in a Tar archive.

The C structure for a sparse entry is:

     struct posix_header {
     struct sparse sp[21]; // TarConstants.SPARSELEN_GNU_SPARSE     - offset 0
     char isextended;      // TarConstants.ISEXTENDEDLEN_GNU_SPARSE - offset 504
     };

Whereas, "struct sparse" is:

     struct sparse {
     char offset[12];   // offset 0
     char numbytes[12]; // offset 12
     };

- ## Field Summary

  ### Fields inherited from interface org.apache.tools.tar.TarConstants

  `ATIMELEN_GNU, CHKSUMLEN, CTIMELEN_GNU, DEVLEN, FORMAT_OLDGNU, FORMAT_POSIX, GIDLEN, GNAMELEN, GNU_LONGLINK, GNU_TMAGIC, ISEXTENDEDLEN_GNU, ISEXTENDEDLEN_GNU_SPARSE, LF_BLK, LF_CHR, LF_CONTIG, LF_DIR, LF_FIFO, LF_GNUTYPE_LONGLINK, LF_GNUTYPE_LONGNAME, LF_GNUTYPE_SPARSE, LF_LINK, LF_NORMAL, LF_OLDNORM, LF_PAX_EXTENDED_HEADER_LC, LF_PAX_EXTENDED_HEADER_UC, LF_PAX_GLOBAL_EXTENDED_HEADER, LF_SYMLINK, LONGNAMESLEN_GNU, MAGIC_OFFSET, MAGIC_POSIX, MAGICLEN, MAXID, MAXSIZE, MODELEN, MODTIMELEN, NAMELEN, OFFSETLEN_GNU, PAD2LEN_GNU, PREFIXLEN, PURE_MAGICLEN, REALSIZELEN_GNU, SIZELEN, SPARSELEN_GNU, SPARSELEN_GNU_SPARSE, TMAGIC, UIDLEN, UNAMELEN, VERSION_GNU_SPACE, VERSION_GNU_ZERO, VERSION_OFFSET, VERSION_POSIX, VERSIONLEN`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `TarArchiveSparseEntry(byte[] headerBuf)`
  Construct an entry from an archive's header bytes.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `boolean`
  `isExtended()`

  ### Methods inherited from class java.lang.Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- ## Constructor Details

  - ### TarArchiveSparseEntry

    public TarArchiveSparseEntry(byte[] headerBuf) throws IOException
    Construct an entry from an archive's header bytes. File is set to null.
    Parameters:
      `headerBuf` - The header bytes from a tar archive entry.
    Throws:
      `IOException` - on unknown format

- ## Method Details

  - ### isExtended

    public boolean isExtended()