net.sf.saxon.charcode
Class UnicodeCharacterSet

java.lang.Object
  net.sf.saxon.charcode.UnicodeCharacterSet

All Implemented Interfaces:

CharacterSet

public final class UnicodeCharacterSet
extends Object
implements CharacterSet

This class defines properties of the Unicode character set

Method Summary

static int	decodeUTF8(byte[] in, int used) Decode a UTF8 character
static UnicodeCharacterSet	getInstance()
static int	getUTF8Encoding(char in, char in2, byte[] out) Static method to generate the UTF-8 representation of a Unicode character
boolean	inCharset(int c) Determine if a character is present in the character set

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static UnicodeCharacterSet getInstance()

inCharset

public boolean inCharset(int c)

Description copied from interface: CharacterSet

Determine if a character is present in the character set

Specified by:

inCharset in interface CharacterSet

getUTF8Encoding

public static int getUTF8Encoding(char in,
                                  char in2,
                                  byte[] out)

Static method to generate the UTF-8 representation of a Unicode character

Parameters:

in - the Unicode character, or the high half of a surrogate pair

in2 - the low half of a surrogate pair (ignored unless the first argument is in the range for a surrogate pair)

out - an array of at least 4 bytes to hold the UTF-8 representation.

Returns:

the number of bytes in the UTF-8 representation

decodeUTF8

public static int decodeUTF8(byte[] in,
                             int used)
                      throws IllegalArgumentException

Decode a UTF8 character

Throws:

IllegalArgumentException - if the byte sequence is not a valid UTF-8 representation