/* * Copyright (c) 1997, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code 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.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 in the LICENSE file that * accompanied this code). * * 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package sun.io; /** * A algorithmic conversion from ASCII to Unicode * * @author Limin Shi */public class ByteToCharASCII extends ByteToCharConverter {     // Return the character set id    public String getCharacterEncoding()    {        return "ASCII";    }     public int flush(char[] output, int outStart, int outEnd) {        // This converter will not buffer any data.        byteOff = charOff = 0;        return 0;    }     /**     * Algorithmic character conversion     */    public int convert(byte[] input, int inOff, int inEnd,                       char[] output, int outOff, int outEnd)        throws ConversionBufferFullException, UnknownCharacterException    {        byte    inputByte;         charOff = outOff;        byteOff = inOff;         // Loop until we hit the end of the input        while(byteOff < inEnd)        {            // If we don't have room for the output, throw an exception            if (charOff >= outEnd)                throw new ConversionBufferFullException();             // Convert the input byte            inputByte = input[byteOff++];             if (inputByte >= 0)                output[charOff++] = (char)inputByte;            else {                if (subMode)                    output[charOff++] = '\uFFFD';       // Replace Char                else {                    badInputLength = 1;                    throw new UnknownCharacterException();                }            }        }         // Return the length written to the output buffer        return charOff-outOff;    }     /*     *   Reset after finding bad input     */    public void reset() {        byteOff = charOff = 0;    } }