Package org.wildfly.common.codec

Class Alphabet

  • Direct Known Subclasses:
    Base32Alphabet, Base64Alphabet
    public abstract class Alphabet
extends java.lang.Object
    A base-n encoder/decoder alphabet. Alphabets may be little-endian or big-endian. Each base has its own subclass.

    • Method Summary

      All Methods Instance Methods Abstract Methods Concrete Methods 
      Modifier and Type Method Description
      abstract int decode​(int codePoint)
      Decode the given code point (character).
      abstract int encode​(int val)
      Encode the given byte value to a code point.
      boolean isLittleEndian()
      Determine whether this is a little-endian or big-endian alphabet.

      • Methods inherited from class java.lang.Object

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

    • Method Detail

      • isLittleEndian

        public boolean isLittleEndian()
        Determine whether this is a little-endian or big-endian alphabet.
        Returns:
        true if the alphabet is little-endian, false if it is big-endian

      • encode

        public abstract int encode​(int val)
        Encode the given byte value to a code point.
        Parameters:
        val - the value
        Returns:
        the Unicode code point

      • decode

        public abstract int decode​(int codePoint)
        Decode the given code point (character). If the code point is not valid, -1 is returned.
        Parameters:
        codePoint - the Unicode code point
        Returns:
        the decoded value or -1 if the code point is not valid