Package org.apache.axiom.attachments.utils

Class ByteSearch

java.lang.Object
org.apache.axiom.attachments.utils.ByteSearch
public class ByteSearch extends Object
Deprecated.
This class was part of the MIME parser in Axiom versions before 1.2.13 and is no longer used. It will be removed in Axiom 1.3. Please note that the code in this class is known to have issues; see AXIOM-449 and AXIOM-450 for more information.
Various byte array searching utilities. This includes a "skip search", which is an optimized search for finding a byte pattern in a large byte array.

  • Constructor Summary

    Constructors
    Constructor
    Description
    ByteSearch()
    Deprecated.
     

  • Method Summary

    Modifier and Type
    Method
    Description
    static short[]
    getSkipArray(byte[] pattern, boolean direction)
    Deprecated.
    skipArray Builds a skip array for this pattern and direction.
    static boolean
    isEqual(byte[] pattern, byte[] buffer, int start, int end)
    Deprecated.
    isEqual
    static int
    search(byte[] search, byte[] bytes, int start, int end, boolean direction)
    Deprecated.
    search Look for the search bytes in the bytes array using a straight search.
    static int
    skipSearch(byte[] pattern, boolean direction, byte[] buffer, int start, int end, short[] skip)
    Deprecated.
    Search a byte sequence for a given pattern.

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • ByteSearch

      public ByteSearch()
      Deprecated.

  • Method Details

    • skipSearch

      public static int skipSearch(byte[] pattern, boolean direction, byte[] buffer, int start, int end, short[] skip)
      Deprecated.
      Search a byte sequence for a given pattern. The method uses the skip search algorithm. The search can be performed in forward or backward direction, i.e. beginning from the start or end of the byte sequence.
      Parameters:
      pattern - byte[]
      direction - true if forward, false if backward
      buffer - byte[] to search
      start - index to start search
      end - index to end search (end index is not within the search)
      skip - short[256] A skipArray generated from a call to generateSkipArray.
      Returns:
      index or -1 if not found

    • getSkipArray

      public static short[] getSkipArray(byte[] pattern, boolean direction)
      Deprecated.
      skipArray Builds a skip array for this pattern and direction. The skipArray is used in the optimized skipSearch
      Parameters:
      pattern -
      direction -
      Returns:
      short[256]

    • isEqual

      public static boolean isEqual(byte[] pattern, byte[] buffer, int start, int end)
      Deprecated.
      isEqual
      Parameters:
      pattern -
      buffer -
      start - index
      end - index
      Returns:
      true if the bytes in buffer[start] equal pattern

    • search

      public static int search(byte[] search, byte[] bytes, int start, int end, boolean direction)
      Deprecated.
      search Look for the search bytes in the bytes array using a straight search. Use the skip search if the number of bytes to search is large or if this search is performed frequently.
      Parameters:
      search - byte[]
      bytes - byte[] to search
      start - starting index
      end - end index (exclusive
      direction - boolean (true indicates forward search, false is backwards search
      Returns:
      index or -1