com.ximpleware.transcode
Class UTF8_Coder

java.lang.Object
  com.ximpleware.transcode.UTF8_Coder

public class UTF8_Coder
extends Object

Constructor Summary

UTF8_Coder()

Method Summary

static long	decode(byte[] input, int offset) Decode a UTF-8 char in the input buffer
static int	encode(byte[] output, int offset, int ch) Encode a UCS Char to a UTF-8 representation and write it into the output buffer
static void	encodeAndWrite(OutputStream os, int ch)
static int	getLen(int ch) Get the length (in UTF-8 representation) of the UCS char at the offset value

Methods inherited from class java.lang.Object

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

Constructor Detail

UTF8_Coder

public UTF8_Coder()

Method Detail

encode

public static int encode(byte[] output,
                         int offset,
                         int ch)

Encode a UCS Char to a UTF-8 representation and write it into the output buffer

Parameters:

output - the output byte buffer

offset - offset value to which the UTF-8 bytes are written

ch - the UCS char to be encoded

Returns:

the offset value of the next char to be written

encodeAndWrite

public static final void encodeAndWrite(OutputStream os,
                                        int ch)
                                 throws IOException,
                                        TranscodeException

Throws:

IOException

TranscodeException

decode

public static long decode(byte[] input,
                          int offset)

Decode a UTF-8 char in the input buffer

Parameters:

input - the byte array containing UTF-8 chars

Returns:

a long whose lower 32-bits is the char at the given offset upper 32-bits is the offset of next char in input

getLen

public static int getLen(int ch)
                  throws TranscodeException

Get the length (in UTF-8 representation) of the UCS char at the offset value

Parameters:

input -

Returns:

a long whose upper 32-bits is next offset value and whose lower 32-bits is length in byte

Throws:

TranscodeException