/* * Copyright (c) 1996, 1999, 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;import java.io.*; public class CharToByteISO2022JP extends CharToByteJIS0208 {     private static final int ASCII = 0;                 // ESC ( B    private static final int JISX0201_1976 = 1;         // ESC ( J    private static final int JISX0208_1978 = 2;         // ESC $ @    private static final int JISX0208_1983 = 3;         // ESC $ B    private static final int JISX0201_1976_KANA = 4;    // ESC ( I     private char highHalfZoneCode;    private boolean flushed = true;     // JIS is state full encoding, so currentMode keep the    // current codeset    private int currentMode = ASCII;     /**     * Bytes for substitute for unmappable input.     */    // XXX: Assumes subBytes are ASCII string. Need to change Escape sequence    // for other character sets.    protected byte[] subBytesEscape = { (byte)0x1b, (byte)0x28, (byte)0x42 }; // ESC ( B    protected int subBytesMode = ASCII;     public int flush(byte[] output, int outStart, int outEnd)        throws MalformedInputException, ConversionBufferFullException    {        if (highHalfZoneCode != 0) {            highHalfZoneCode = 0;            badInputLength = 0;            throw new MalformedInputException();        }         if (!flushed && (currentMode != ASCII)) {            if (outEnd - outStart < 3) {                throw new ConversionBufferFullException();            }            output[outStart]     = (byte)0x1b;            output[outStart + 1] = (byte)0x28;            output[outStart + 2] = (byte)0x42;            byteOff += 3;            byteOff = charOff = 0;            flushed = true;            currentMode = ASCII;            return 3;        }        return 0;    }     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     inputSize;          // Size of the input        int     outputSize;         // Size of the output         // Buffer for output bytes        byte[]  tmpArray = new byte[6];        byte[]  outputByte;         flushed = false;         // Make copies of input and output indexes        charOff = inOff;        byteOff = outOff;         if (highHalfZoneCode != 0) {            inputChar = highHalfZoneCode;            highHalfZoneCode = 0;            if (input[inOff] >= 0xdc00 && input[inOff] <= 0xdfff) {                // This is legal UTF16 sequence.                badInputLength = 1;                throw new UnknownCharacterException();            } else {                // This is illegal UTF16 sequence.                badInputLength = 0;                throw new MalformedInputException();            }        }         // Loop until we run out of input        while(charOff < inEnd) {            outputByte = tmpArray;            int newMode = currentMode; // Trace character mode changing             // Get the input character            inputChar = input[charOff];            inputSize = 1;            outputSize = 1;             // Is this a high surrogate?            if(inputChar >= '\uD800' && inputChar <= '\uDBFF') {                // Is this the last character of 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 do                    // surrogates.  Is substitution enabled?                    if (subMode) {                        if (currentMode != subBytesMode) {                            System.arraycopy(subBytesEscape, 0, outputByte, 0,                                             subBytesEscape.length);                            outputSize = subBytesEscape.length;                            System.arraycopy(subBytes, 0, outputByte,                                             outputSize, subBytes.length);                            outputSize += subBytes.length;                            newMode = subBytesMode;                        } else {                            outputByte = subBytes;                            outputSize = subBytes.length;                        }                        inputSize = 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();            } else {                // Not part of a surrogate                 // Does this map to the Roman range?                if (inputChar <= '\u007F') {                    if (currentMode != ASCII) {                        outputByte[0] = (byte)0x1b;                        outputByte[1] = (byte)0x28;                        outputByte[2] = (byte)0x42;                        outputByte[3] = (byte)inputChar;                        outputSize = 4;                        newMode = ASCII;                    } else {                        outputByte[0] = (byte)inputChar;                        outputSize = 1;                    }                }                // Is it a single byte kana?                else if (inputChar >= 0xFF61 && inputChar <= 0xFF9F) {                    if (currentMode != JISX0201_1976_KANA) {                        outputByte[0] = (byte)0x1b;                        outputByte[1] = (byte)0x28;                        outputByte[2] = (byte)0x49;                        outputByte[3] = (byte)(inputChar - 0xff40);                        outputSize = 4;                        newMode = JISX0201_1976_KANA;                    } else {                        outputByte[0] = (byte)(inputChar - 0xff40);                        outputSize = 1;                    }                }                // Is it a yen sign?                else if (inputChar == '\u00A5') {                    if (currentMode != JISX0201_1976) {                        outputByte[0] = (byte)0x1b;                        outputByte[1] = (byte)0x28;                        outputByte[2] = (byte)0x4a;                        outputByte[3] = (byte)0x5c;                        outputSize = 4;                        newMode = JISX0201_1976;                    } else {                        outputByte[0] = (byte)0x5C;                        outputSize = 1;                    }                }                // Is it a tilde?                else if (inputChar == '\u203E')                    {                        if (currentMode != JISX0201_1976) {                            outputByte[0] = (byte)0x1b;                            outputByte[1] = (byte)0x28;                            outputByte[2] = (byte)0x4a;                            outputByte[3] = (byte)0x7e;                            outputSize = 4;                            newMode = JISX0201_1976;                        } else {                            outputByte[0] = (byte)0x7e;                            outputSize = 1;                        }                    }                // Is it a JIS-X-0208 character?                else {                    int index = getNative(inputChar);                    if (index != 0) {                        if (currentMode != JISX0208_1983) {                            outputByte[0] = (byte)0x1b;                            outputByte[1] = (byte)0x24;                            outputByte[2] = (byte)0x42;                            outputByte[3] = (byte)(index >> 8);                            outputByte[4] = (byte)(index & 0xff);                            outputSize = 5;                            newMode = JISX0208_1983;                        } else {                            outputByte[0] = (byte)(index >> 8);                            outputByte[1] = (byte)(index & 0xff);                            outputSize = 2;                        }                    }                    // It doesn't map to JIS-0208!                    else {                        if (subMode) {                            if (currentMode != subBytesMode) {                                System.arraycopy(subBytesEscape, 0, outputByte, 0,                                                 subBytesEscape.length);                                outputSize = subBytesEscape.length;                                System.arraycopy(subBytes, 0, outputByte,                                                 outputSize, subBytes.length);                                outputSize += subBytes.length;                                newMode = subBytesMode;                            } else {                                outputByte = subBytes;                                outputSize = subBytes.length;                            }                        } else {                            badInputLength = 1;                            throw new UnknownCharacterException();                        }                    }                }            }             // Is there room in the output buffer?            // XXX: The code assumes output buffer can hold at least 5 bytes,            // in this coverter case. However, there is no way for apps to            // see how many bytes will be necessary for next call.            // getMaxBytesPerChar() should be overriden in every subclass of            // CharToByteConverter and reflect real value (5 for this).            if (byteOff + outputSize > outEnd)                throw new ConversionBufferFullException();             // Put the output into the buffer            for ( int i = 0 ; i < outputSize ; i++ )                output[byteOff++] = outputByte[i];             // Advance the input pointer            charOff += inputSize;             // We can successfuly output the characters, changes            // current mode. Fix for 4251646.            currentMode = newMode;        }         // return mode ASCII at the end        if (currentMode != ASCII){            if (byteOff + 3 > outEnd)                throw new ConversionBufferFullException();             output[byteOff++] = 0x1b;            output[byteOff++] = 0x28;            output[byteOff++] = 0x42;            currentMode = ASCII;        }         // Return the length written to the output buffer        return byteOff-outOff;    }     // Reset    public void reset() {        highHalfZoneCode = 0;        byteOff = charOff = 0;        currentMode = ASCII;    }     /**     * returns the maximum number of bytes needed to convert a char     */    public int getMaxBytesPerChar() {        return 8;    }     // Return the character set ID    public String getCharacterEncoding() {        return "ISO2022JP";    } }