/*
* @(#)CharToByteISO8859_1.java 1.28 06/10/10
*
* Copyright 1990-2008 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License version
* 2 only, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License version 2 for more details (a copy is
* included at /legal/license.txt).
*
* You should have received a copy of the GNU General Public License
* version 2 along with this work; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
* Clara, CA 95054 or visit www.sun.com if you need additional
* information or have any questions.
*
*/
package sun.io;
public class CharToByteISO8859_1 extends CharToByteConverter {
// Return the character set ID
public String getCharacterEncoding()
{
return "ISO8859_1";
}
private char highHalfZoneCode;
public int flush(byte[] output, int outStart, int outEnd)
throws MalformedInputException
{
if (highHalfZoneCode != 0) {
highHalfZoneCode = 0;
throw new MalformedInputException
("String ends with <High Half Zone code> of UTF16");
}
byteOff = charOff = 0;
return 0;
}
/*
* Character conversion
*/
public native int convert(char[] input, int inOff, int inEnd,
byte[] output, int outOff, int outEnd)
throws MalformedInputException,
UnknownCharacterException,
ConversionBufferFullException;
/**
* This method is changed to a CNI method
* for performance purpose.
*
*public int convert(char[] input, int inOff, int inEnd,
* byte[] output, int outOff, int outEnd)
* throws MalformedInputException,
* UnknownCharacterException,
* ConversionBufferFullException
*
*{
*
* char inputChar; // Input character to be converted
* int outputSize; // Size of output
*
* // Record beginning offsets
* charOff = inOff;
* byteOff = outOff;
*
* if (highHalfZoneCode != 0) {
* highHalfZoneCode = 0;
* if (input[inOff] >= 0xdc00 && input[inOff] <= 0xdfff) {
* // This is legal UTF16 sequence.
* if (subMode) {
* outputSize = subBytes.length;
* if (byteOff + outputSize > outEnd)
* throw new ConversionBufferFullException();
* System.arraycopy(subBytes, 0, output, byteOff, outputSize);
* byteOff += outputSize;
* charOff += 1;
* } else {
* badInputLength = 1;
* throw new UnknownCharacterException();
* }
* } else {
* // This is illegal UTF16 sequence.
* badInputLength = 0;
* throw new MalformedInputException
* ("Previous converted string ends with " +
* "<High Half Zone Code> of UTF16 " +
* ", but this string is not begin with <Low Half Zone>");
* }
* }
*
* // Loop until we hit the end of the input
* while(charOff < inEnd) {
* // Get the input character
* inputChar = input[charOff];
*
* // Is this character mappable?
* if (inputChar <= '\u00FF') {
* if (byteOff + 1 > outEnd)
* throw new ConversionBufferFullException();
*
* output[byteOff++] = (byte)inputChar;
* charOff += 1;
* }
* // Is this a high surrogate?
* else if(inputChar >= '\uD800' && inputChar <= '\uDBFF') {
* // Is this the last character in the input?
* if (charOff + 1 == inEnd) {
* highHalfZoneCode = inputChar;
* break;
* }
*
* // Is there a low surrogate following?
* inputChar = input[charOff + 1];
* if (inputChar >= '\uDC00' && inputChar <= '\uDFFF') {
* // We have a valid surrogate pair. Too bad we don't map
* // surrogates. Is substitution enabled?
* if (subMode) {
* outputSize = subBytes.length;
*
* if (byteOff + outputSize > outEnd)
* throw new ConversionBufferFullException();
*
* System.arraycopy(subBytes, 0, output, byteOff, outputSize);
* byteOff += outputSize;
* charOff += 2;
*
* } else {
* badInputLength = 2;
* throw new UnknownCharacterException();
* }
* } else {
* // We have a malformed surrogate pair
* badInputLength = 1;
* throw new MalformedInputException();
* }
* }
* // Is this an unaccompanied low surrogate?
* else if (inputChar >= '\uDC00' && inputChar <= '\uDFFF') {
* badInputLength = 1;
* throw new MalformedInputException();
* }
* // Unmappable and not part of a surrogate
* else {
* // Is substitution enabled?
* if (subMode) {
* outputSize = subBytes.length;
*
* if (byteOff + outputSize > outEnd)
* throw new ConversionBufferFullException();
*
* System.arraycopy(subBytes, 0, output, byteOff, outputSize);
* byteOff += outputSize;
* charOff += 1;
*
* } else {
* badInputLength = 1;
* throw new UnknownCharacterException();
* }
* }
* }
*
* // Return the length written to the output buffer
* return byteOff-outOff;
*}
*/
// Determine if a character is mappable or not
public boolean canConvert(char ch)
{
return (ch <= '\u00FF');
}
// Reset the converter
public void reset()
{
byteOff = charOff = 0;
highHalfZoneCode = 0;
}
/**
* returns the maximum number of bytes needed to convert a char
*/
public int getMaxBytesPerChar()
{
return 1;
}
}