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
 };

  • 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()