Module kala.compress.archivers.dump
Package kala.compress.archivers.dump

Class DumpArchiveUtil

  • final class DumpArchiveUtil
extends java.lang.Object
    Various utilities for dump archives.

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private DumpArchiveUtil()
      Private constructor to prevent instantiation.

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static int calculateChecksum​(byte[] buffer)
      Calculate checksum for buffer.
      static int convert16​(byte[] buffer, int offset)
      Reads 2-byte integer from buffer.
      static int convert32​(byte[] buffer, int offset)
      Reads 4-byte integer from buffer.
      static long convert64​(byte[] buffer, int offset)
      Reads 8-byte integer from buffer.
      (package private) static java.lang.String decode​(java.nio.charset.Charset encoding, byte[] b, int offset, int len)
      Decodes a byte array to a string.
      static int getIno​(byte[] buffer)
      Gets the ino associated with this buffer.
      static boolean verify​(byte[] buffer)
      Verifies that the buffer contains a tape segment header.

      • Methods inherited from class java.lang.Object

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

    • Constructor Detail

      • DumpArchiveUtil

        private DumpArchiveUtil()
        Private constructor to prevent instantiation.

    • Method Detail

      • calculateChecksum

        public static int calculateChecksum​(byte[] buffer)
        Calculate checksum for buffer.
        Parameters:
        buffer - buffer containing tape segment header
        Returns:
        checksum

      • convert16

        public static int convert16​(byte[] buffer,
                            int offset)
        Reads 2-byte integer from buffer.
        Parameters:
        buffer - The source buffer.
        offset - Where to start reading.
        Returns:
        the 2-byte entry as an int.

      • convert32

        public static int convert32​(byte[] buffer,
                            int offset)
        Reads 4-byte integer from buffer.
        Parameters:
        buffer - The source buffer.
        offset - Where to start reading.
        Returns:
        the 4-byte entry as an int.

      • convert64

        public static long convert64​(byte[] buffer,
                             int offset)
        Reads 8-byte integer from buffer.
        Parameters:
        buffer - The source buffer.
        offset - Where to start reading.
        Returns:
        the 8-byte entry as a long.

      • decode

        static java.lang.String decode​(java.nio.charset.Charset encoding,
                               byte[] b,
                               int offset,
                               int len)
                        throws java.io.IOException
        Decodes a byte array to a string.
        Throws:
        java.io.IOException

      • getIno

        public static int getIno​(byte[] buffer)
        Gets the ino associated with this buffer.
        Parameters:
        buffer - The source buffer.
        Returns:
        the ino associated with this buffer.

      • verify

        public static boolean verify​(byte[] buffer)
        Verifies that the buffer contains a tape segment header.
        Parameters:
        buffer - The source buffer.
        Returns:
        Whether the buffer contains a tape segment header.