/*
 * Copyright (c) 2018, 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 $PACKAGE$;

import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CharsetEncoder;
import java.nio.charset.CoderResult;
import sun.nio.cs.HistoricallyNamedCharset;
import sun.nio.cs.DelegatableDecoder;
import sun.nio.cs.DoubleByte;
import sun.nio.cs.Surrogate;
import sun.nio.cs.SingleByte;
import sun.nio.cs.*;
import static sun.nio.cs.CharsetMapping.*;

public class IBM29626C
    extends Charset
    implements HistoricallyNamedCharset
{
    public IBM29626C() {
        super("x-IBM29626C",  $ALIASES$);
    }

    public String historicalName() {
        return "Cp29626C";
    }

    public boolean contains(Charset cs) {
        return ((cs.name().equals("US-ASCII"))
                || (cs instanceof IBM29626C));
    }

    public CharsetDecoder newDecoder() {
        return new Decoder(this);
    }

    public CharsetEncoder newEncoder() {
        return new Encoder(this);
    }

    static class Decoder extends CharsetDecoder
        implements DelegatableDecoder {

        final static SingleByte.Decoder DEC0201 =
            (SingleByte.Decoder)new JIS_X_0201().newDecoder();

        final static DoubleByte.Decoder DEC0208 =
            (DoubleByte.Decoder)new JIS_X_0208().newDecoder();

        final static DoubleByte.Decoder DEC0212 =
            (DoubleByte.Decoder)new JIS_X_0212().newDecoder();

        final static DoubleByte.Encoder ibm943 =
            (DoubleByte.Encoder)new IBM943().newEncoder();

        private final SingleByte.Decoder dec0201;
        private final DoubleByte.Decoder dec0208;
        private final DoubleByte.Decoder dec0212;

        private final String G2_b =
            "\uA1F1\uA1F2\uA2CC\uADA1\uADA2\uADA3\uADA4\uADA5\uADA6\uADA7"+
            "\uADA8\uADA9\uADAA\uADAB\uADAC\uADAD\uADAE\uADAF\uADB0\uADB1"+
            "\uADB2\uADB3\uADB4\uADB5\uADB6\uADB7\uADB8\uADB9\uADBA\uADBB"+
            "\uADBC\uADBD\uADBE\uADC0\uADC1\uADC2\uADC3\uADC4\uADC5\uADC6"+
            "\uADC7\uADC8\uADC9\uADCA\uADCB\uADCC\uADCD\uADCE\uADCF\uADD0"+
            "\uADD1\uADD2\uADD3\uADD4\uADD5\uADD6\uADDF\uADE0\uADE1\uADE2"+
            "\uADE3\uADE4\uADE5\uADE6\uADE7\uADE8\uADE9\uADEA\uADEB\uADEC"+
            "\uADED\uADEE\uADEF\uADF0\uADF1\uADF2\uADF3\uADF4\uADF5\uADF6"+
            "\uADF7\uADF8\uADF9\uADFA\uADFB\uADFC";

        private final String G2_c =
            "\uFFE0\uFFE1\uFFE2\u2460\u2461\u2462\u2463\u2464\u2465\u2466"+
            "\u2467\u2468\u2469\u246A\u246B\u246C\u246D\u246E\u246F\u2470"+
            "\u2471\u2472\u2473\u2160\u2161\u2162\u2163\u2164\u2165\u2166"+
            "\u2167\u2168\u2169\u3349\u3314\u3322\u334D\u3318\u3327\u3303"+
            "\u3336\u3351\u3357\u330D\u3326\u3323\u332B\u334A\u333B\u339C"+
            "\u339D\u339E\u338E\u338F\u33C4\u33A1\u337B\u301D\u301F\u2116"+
            "\u33CD\u2121\u32A4\u32A5\u32A6\u32A7\u32A8\u3231\u3232\u3239"+
            "\u337E\u337D\u337C\u2252\u2261\u222B\u222E\u2211\u221A\u22A5"+
            "\u2220\u221F\u22BF\u2235\u2229\u222A";

        private final String G3_b =
            "\uF3B8\uF3B9\uF3AB\uF3AC\uF3AD\uF3AE\uF3AF\uF3B0\uF3B1\uF3B2"+
            "\uF3B3\uF3B4\uF3A1\uF3A2\uF3A3\uF3A4\uF3A5\uF3A6\uF3A7\uF3A8"+
            "\uF3A9\uF3AA\uF3B7\uF3B8\uF4A2\uF4A3\uF4A4\uF4A5\uF4A6\uF4A8"+
            "\uF4A9\uF4AC\uF4AE\uF4AF\uF4B0\uF4B2\uF4B3\uF4B4\uF4B5\uF4B6"+
            "\uF4B7\uF4BA\uF4BD\uF4BE\uF4C0\uF4BF\uF4C2\uF4A1\uF4C6\uF4C7"+
            "\uF4C8\uF4CB\uF4D0\uF4D4\uF4D5\uF4D7\uF4D9\uF4DC\uF4DF\uF4E0"+
            "\uF4E1\uF4E5\uF4E7\uF4EA\uF4ED\uF4EE\uF4EF\uF4F4\uF4F5\uF4F6"+
            "\uF4F8\uF3B8\uF4B9\uF4EB\uF4A7\uF4AA\uF4AB\uF4B1\uF4B8\uF4BB"+
            "\uF4BC\uF4C4\uF4C5\uF4C9\uF4CC\uF4CD\uF4CE\uF4CF\uF4D1\uF4D3"+
            "\uF4D6\uF4D8\uF4DA\uF4DB\uF4DE\uF4E2\uF4E3\uF4E4\uF4E6\uF4E8"+
            "\uF4E9\uF4EC\uF4F1\uF4F2\uF4F3\uF4F7\uF3B6\uF3B5";

        private final String G3_c =
            "\u2116\u2121\u2160\u2161\u2162\u2163\u2164\u2165\u2166\u2167"+
            "\u2168\u2169\u2170\u2171\u2172\u2173\u2174\u2175\u2176\u2177"+
            "\u2178\u2179\u3231\u00A6\u4EFC\u50F4\u51EC\u5307\u5324\u548A"+
            "\u5759\u589E\u5BEC\u5CF5\u5D53\u5FB7\u6085\u6120\u654E\u663B"+
            "\u6665\u6801\u6A6B\u6AE2\u6DF2\u6DF8\u7028\u70BB\u7501\u7682"+
            "\u769E\u7930\u7AE7\u7DA0\u7DD6\u8362\u85B0\u8807\u8B7F\u8CF4"+
            "\u8D76\u90DE\u9115\u9592\u973B\u974D\u9751\u999E\u9AD9\u9B72"+
            "\u9ED1\uF86F\uF929\uF9DC\uFA0E\uFA0F\uFA10\uFA11\uFA12\uFA13"+
            "\uFA14\uFA15\uFA16\uFA17\uFA18\uFA19\uFA1A\uFA1B\uFA1C\uFA1D"+
            "\uFA1E\uFA1F\uFA20\uFA21\uFA22\uFA23\uFA24\uFA25\uFA26\uFA27"+
            "\uFA28\uFA29\uFA2A\uFA2B\uFA2C\uFA2D\uFF02\uFF07";

        protected Decoder(Charset cs) {
            this(cs, 0.5f, 1.0f, DEC0201, DEC0208, DEC0212);
        }

        protected Decoder(Charset cs, float avgCpb, float maxCpb,
                          SingleByte.Decoder dec0201,
                          DoubleByte.Decoder dec0208,
                          DoubleByte.Decoder dec0212) {
            super(cs, avgCpb, maxCpb);
            this.dec0201 = dec0201;
            this.dec0208 = dec0208;
            this.dec0212 = dec0212;
        }


        protected char decodeSingle(int b) {
            if (b < 0x8e)
                return (char) b;
            if (b < 0x90)
                return UNMAPPABLE_DECODING;
            if (b < 0xa0)
                return (char) b;
            return UNMAPPABLE_DECODING;
        }

        protected char decodeUDC(int byte1, int byte2, int offset) {
            if ((byte1 >= 0xf5 && byte1 <= 0xfe)
                && (byte2 >= 0xa1 && byte2 <= 0xfe)) {
                return (char)((byte1 - 0xf5) * 94 + (byte2 - 0xa1) + offset);
            }
            return UNMAPPABLE_DECODING;
        }

        final static String g1_c = "\u00a2\u00a3\u00ac\\\u007e";

        protected char decodeDouble(int byte1, int byte2) {
            if (byte1 == 0x8e) {
                if (byte2 < 0x80)
                    return UNMAPPABLE_DECODING;
                char c = dec0201.decode((byte)byte2);
                if (byte2 >= 0xe0 && byte2 <= 0xe4)
                    c = g1_c.charAt(byte2 - 0xe0);
                return c;
            }
            if ((byte1 >= 0xa1 && byte1 <= 0xfe)
                && (byte2 >= 0xa1 && byte2 <= 0xfe)) {
                char c = (char)((byte1 << 8) + byte2);
                int idx = G2_b.indexOf(c);
                if (idx > -1)
                    return G2_c.charAt(idx);
            }
            char ch = dec0208.decodeDouble(byte1 - 0x80, byte2 - 0x80);
            if (ch == UNMAPPABLE_DECODING)
                ch = decodeUDC(byte1, byte2, 0xe000);
            return ch;
        }

        protected char decodeDoubleG3(int byte1, int byte2) {
            if ((byte1 >= 0xa1 && byte1 <= 0xfe)
                && (byte2 >= 0xa1 && byte2 <= 0xfe)) {
                char c = (char)((byte1 << 8) + byte2);
                int idx = G3_b.indexOf(c);
                if (idx > -1)
                    return G3_c.charAt(idx);
            }
            char ch = dec0212.decodeDouble(byte1 - 0x80, byte2 - 0x80);
            if (ch == '\u2116')
                ch = UNMAPPABLE_DECODING;
            if (ch != UNMAPPABLE_DECODING)
                ch =  ibm943.canEncode(ch) ? ch : UNMAPPABLE_DECODING;
            if (ch == UNMAPPABLE_DECODING)
                ch = decodeUDC(byte1, byte2, 0xe3ac);
            return ch;
        }

        private CoderResult decodeArrayLoop(ByteBuffer src,
                                            CharBuffer dst)
        {
            byte[] sa = src.array();
            int sp = src.arrayOffset() + src.position();
            int sl = src.arrayOffset() + src.limit();
            assert (sp <= sl);
            sp = (sp <= sl ? sp : sl);

            char[] da = dst.array();
            int dp = dst.arrayOffset() + dst.position();
            int dl = dst.arrayOffset() + dst.limit();
            assert (dp <= dl);
            dp = (dp <= dl ? dp : dl);

            int b1 = 0, b2 = 0;
            int inputSize = 0;
            char outputChar = UNMAPPABLE_DECODING;
            try {
                while (sp < sl) {
                    b1 = sa[sp] & 0xff;
                    inputSize = 1;

                    outputChar = decodeSingle(b1);
                    if (outputChar == UNMAPPABLE_DECODING) { // Multibyte char
                        if (b1 == 0x8f) {           // JIS0212
                            if (sp + 3 > sl)
                               return CoderResult.UNDERFLOW;
                            b1 = sa[sp + 1] & 0xff;
                            b2 = sa[sp + 2] & 0xff;
                            inputSize += 2;
                            outputChar = decodeDoubleG3(b1, b2);
                        } else {                     // JIS0201, JIS0208
                            if (sp + 2 > sl)
                               return CoderResult.UNDERFLOW;
                            b2 = sa[sp + 1] & 0xff;
                            inputSize++;
                            outputChar = decodeDouble(b1, b2);
                        }
                    }
                    if (outputChar == UNMAPPABLE_DECODING) { // can't be decoded
                        return CoderResult.unmappableForLength(inputSize);
                    }
                    if (dp + 1 > dl)
                        return CoderResult.OVERFLOW;
                    da[dp++] = outputChar;
                    sp += inputSize;
                }
                return CoderResult.UNDERFLOW;
            } finally {
                src.position(sp - src.arrayOffset());
                dst.position(dp - dst.arrayOffset());
            }
        }

        private CoderResult decodeBufferLoop(ByteBuffer src,
                                             CharBuffer dst)
        {
            int mark = src.position();
            int b1 = 0, b2 = 0;
            int inputSize = 0;
            char outputChar = UNMAPPABLE_DECODING;

            try {
                while (src.hasRemaining()) {
                    b1 = src.get() & 0xff;
                    inputSize = 1;
                    outputChar = decodeSingle(b1);
                    if (outputChar == UNMAPPABLE_DECODING) { // Multibyte char
                        if (b1 == 0x8f) {   // JIS0212
                            if (src.remaining() < 2)
                               return CoderResult.UNDERFLOW;
                            b1 = src.get() & 0xff;
                            b2 = src.get() & 0xff;
                            inputSize += 2;
                            outputChar = decodeDoubleG3(b1, b2);
                        } else {                     // JIS0201 JIS0208
                            if (src.remaining() < 1)
                               return CoderResult.UNDERFLOW;
                            b2 = src.get() & 0xff;
                            inputSize++;
                            outputChar = decodeDouble(b1, b2);
                        }
                    }
                    if (outputChar == UNMAPPABLE_DECODING) {
                        return CoderResult.unmappableForLength(inputSize);
                    }
                if (dst.remaining() < 1)
                    return CoderResult.OVERFLOW;
                dst.put(outputChar);
                mark += inputSize;
                }
                return CoderResult.UNDERFLOW;
            } finally {
                src.position(mark);
            }
        }

        // Make some protected methods public for use by JISAutoDetect
        public CoderResult decodeLoop(ByteBuffer src, CharBuffer dst) {
            if (src.hasArray() && dst.hasArray())
                return decodeArrayLoop(src, dst);
            else
                return decodeBufferLoop(src, dst);
        }
        public void implReset() {
            super.implReset();
        }
        public CoderResult implFlush(CharBuffer out) {
            return super.implFlush(out);
        }
    }


    static class Encoder extends CharsetEncoder {

        final static SingleByte.Encoder ENC0201 =
            (SingleByte.Encoder)new JIS_X_0201().newEncoder();

        final static DoubleByte.Encoder ENC0208 =
            (DoubleByte.Encoder)new JIS_X_0208().newEncoder();

        final static DoubleByte.Encoder ENC0212 =
            (DoubleByte.Encoder)new JIS_X_0212().newEncoder();

        final static DoubleByte.Encoder ibm943 =
            (DoubleByte.Encoder)new IBM943().newEncoder();

        private final Surrogate.Parser sgp = new Surrogate.Parser();

        private final SingleByte.Encoder enc0201;
        private final DoubleByte.Encoder enc0208;
        private final DoubleByte.Encoder enc0212;

        private final String G2_c =
            "\u2015\u2211\u221F\u2225\u222E\u22BF\u2460\u2461\u2462\u2463"+
            "\u2464\u2465\u2466\u2467\u2468\u2469\u246A\u246B\u246C\u246D"+
            "\u246E\u246F\u2470\u2471\u2472\u2473\u301D\u301F\u3232\u3239"+
            "\u32A4\u32A5\u32A6\u32A7\u32A8\u3303\u330D\u3314\u3318\u3322"+
            "\u3323\u3326\u3327\u332B\u3336\u333B\u3349\u334A\u334D\u3351"+
            "\u3357\u337B\u337C\u337D\u337E\u338E\u338F\u339C\u339D\u339E"+
            "\u33A1\u33C4\u33CD\u4FE0\u525D\u555E\u5699\u56CA\u5861\u5C5B"+
            "\u5C62\u6414\u6451\u6522\u6805\u688E\u6F51\u7006\u7130\u7626"+
            "\u79B1\u7C1E\u7E48\u7E61\u7E6B\u8141\u8346\u840A\u8523\u87EC"+
            "\u881F\u8EC0\u91AC\u91B1\u9830\u9839\u985A\u9A52\u9DD7\u9E7C"+
            "\u9EB4\u9EB5\uFF0D\uFF5E\uFFE0\uFFE1\uFFE2";

        private final String G2_b =
            "\uA1BD\uADF4\uADF8\uA1C2\uADF3\uADF9\uADA1\uADA2\uADA3\uADA4"+
            "\uADA5\uADA6\uADA7\uADA8\uADA9\uADAA\uADAB\uADAC\uADAD\uADAE"+
            "\uADAF\uADB0\uADB1\uADB2\uADB3\uADB4\uADE0\uADE1\uADEB\uADEC"+
            "\uADE5\uADE6\uADE7\uADE8\uADE9\uADC6\uADCA\uADC1\uADC4\uADC2"+
            "\uADCC\uADCB\uADC5\uADCD\uADC7\uADCF\uADC0\uADCE\uADC3\uADC8"+
            "\uADC9\uADDF\uADEF\uADEE\uADED\uADD3\uADD4\uADD0\uADD1\uADD2"+
            "\uADD6\uADD5\uADE3\uB6A2\uC7ED\uB0A2\uB3FA\uC7B9\uC5B6\uD6A2"+
            "\uBCC8\uC1DF\uC4CF\uDAB9\uBAF4\uDBF4\uC8AE\uC6C2\uB1EB\uC1E9"+
            "\uC5F8\uC3BD\uE5DA\uBDAB\uB7D2\uE7A6\uB7D5\uCDE9\uBED5\uC0E6"+
            "\uCFB9\uB6ED\uBEDF\uC8B0\uCBCB\uF0F8\uC5BF\uC2CD\uB2AA\uB8B4"+
            "\uB9ED\uCCCD\uA1DD\uA1C1\uA1F1\uA1F2\uA2CC";

        private final String G3_c =
            "\u2116\u2121\u2160\u2161\u2162\u2163\u2164\u2165\u2166\u2167"+
            "\u2168\u2169\u2170\u2171\u2172\u2173\u2174\u2175\u2176\u2177"+
            "\u2178\u2179\u3231\u4EFC\u50F4\u51EC\u5307\u5324\u548A\u5759"+
            "\u589E\u5BEC\u5CF5\u5D53\u5FB7\u6085\u6120\u654E\u663B\u6665"+
            "\u6801\u6A6B\u6AE2\u6DF2\u6DF8\u7028\u70BB\u7501\u7682\u769E"+
            "\u7930\u7AE7\u7DA0\u7DD6\u8362\u85B0\u8807\u8B7F\u8CF4\u8D76"+
            "\u90DE\u9115\u9592\u973B\u974D\u9751\u999E\u9AD9\u9B72\u9ED1"+
            "\uF86F\uF929\uF9DC\uFA0E\uFA0F\uFA10\uFA11\uFA12\uFA13\uFA14"+
            "\uFA15\uFA16\uFA17\uFA18\uFA19\uFA1A\uFA1B\uFA1C\uFA1D\uFA1E"+
            "\uFA1F\uFA20\uFA21\uFA22\uFA23\uFA24\uFA25\uFA26\uFA27\uFA28"+
            "\uFA29\uFA2A\uFA2B\uFA2C\uFA2D\uFF02\uFF07\uFFE4";

        private final String G3_b =
            "\uF3B8\uF3B9\uF3AB\uF3AC\uF3AD\uF3AE\uF3AF\uF3B0\uF3B1\uF3B2"+
            "\uF3B3\uF3B4\uF3A1\uF3A2\uF3A3\uF3A4\uF3A5\uF3A6\uF3A7\uF3A8"+
            "\uF3A9\uF3AA\uF3B7\uF4A2\uF4A3\uF4A4\uF4A5\uF4A6\uF4A8\uF4A9"+
            "\uF4AC\uF4AE\uF4AF\uF4B0\uF4B2\uF4B3\uF4B4\uF4B5\uF4B6\uF4B7"+
            "\uF4BA\uF4BD\uF4BE\uF4C0\uF4BF\uF4C2\uF4A1\uF4C6\uF4C7\uF4C8"+
            "\uF4CB\uF4D0\uF4D4\uF4D5\uF4D7\uF4D9\uF4DC\uF4DF\uF4E0\uF4E1"+
            "\uF4E5\uF4E7\uF4EA\uF4ED\uF4EE\uF4EF\uF4F4\uF4F5\uF4F6\uF4F8"+
            "\uF3B8\uF4B9\uF4EB\uF4A7\uF4AA\uF4AB\uF4B1\uF4B8\uF4BB\uF4BC"+
            "\uF4C4\uF4C5\uF4C9\uF4CC\uF4CD\uF4CE\uF4CF\uF4D1\uF4D3\uF4D6"+
            "\uF4D8\uF4DA\uF4DB\uF4DE\uF4E2\uF4E3\uF4E4\uF4E6\uF4E8\uF4E9"+
            "\uF4EC\uF4F1\uF4F2\uF4F3\uF4F7\uF3B6\uF3B5\uA2C3";

        protected Encoder(Charset cs) {
            this(cs, 3.0f, 3.0f, ENC0201, ENC0208, ENC0212);
        }

        protected Encoder(Charset cs, float avgBpc, float maxBpc,
                          SingleByte.Encoder enc0201,
                          DoubleByte.Encoder enc0208,
                          DoubleByte.Encoder enc0212) {
            super(cs, avgBpc, maxBpc);
            this.enc0201 = enc0201;
            this.enc0208 = enc0208;
            this.enc0212 = enc0212;
        }

        public boolean canEncode(char c) {
            byte[]  encodedBytes = new byte[3];
            return encodeSingle(c, encodedBytes) != 0 ||
                   encodeDouble(c) != UNMAPPABLE_ENCODING;
        }

        private final static String G1_c = "\u00A2\u00A3\u00AC";

        protected int encodeSingle(char inputChar, byte[] outputByte) {
            if (inputChar >= 0x80 && inputChar < 0x8e) {
                outputByte[0] = (byte)inputChar;
                return 1;
            }
            if (inputChar >= 0x90 && inputChar < 0xa0) {
                outputByte[0] = (byte)inputChar;
                return 1;
            }
            int b = enc0201.encode(inputChar);
            if (b == UNMAPPABLE_ENCODING) {
                int idx = G1_c.indexOf(inputChar);
                if (idx > -1)
                    b = 0xe0 + idx;
            }
            if (b == UNMAPPABLE_ENCODING)
                return 0;
            if (b >= 0 && b < 128) {
                outputByte[0] = (byte)b;
                return 1;
            }
            outputByte[0] = (byte)0x8e;
            outputByte[1] = (byte)b;
            return 2;
        }

        protected int encodeUDC(char ch) {
            if (ch >= '\ue000' && ch <= '\ue757') {
                if (ch < '\ue3ac') {
                   int offset = (int)ch - 0xe000;
                   int b = ((offset / 94) << 8) + (offset % 94);
                   return b + 0xf5a1;
                } else {
                   int offset = (int)ch - 0xe3ac;
                   int b = ((offset / 94) << 8) + (offset % 94);
                   return b + 0x8ff5a1;
                }
            }
            return UNMAPPABLE_ENCODING;
        }

        protected int encodeDouble(char ch) {
            int idx = G2_c.indexOf(ch);
            if (idx > -1)
                return (int)G2_b.charAt(idx);
            idx = G3_c.indexOf(ch);
            if (idx > -1)
                return (int)G3_b.charAt(idx) + 0x8f0000;
            int b = enc0208.encodeChar(ch);
            if (b != UNMAPPABLE_ENCODING)
                return b + 0x8080;
            b = encodeUDC(ch);
            if (b != UNMAPPABLE_ENCODING)
                return b;
            if (ibm943.canEncode(ch)) {
                b = enc0212.encodeChar(ch);
                if (b != UNMAPPABLE_ENCODING) {
                    b += 0x8F8080;
                    return b;
                }
            }
            return b;
        }

        private CoderResult encodeArrayLoop(CharBuffer src,
                                            ByteBuffer dst)
        {
            char[] sa = src.array();
            int sp = src.arrayOffset() + src.position();
            int sl = src.arrayOffset() + src.limit();
            assert (sp <= sl);
            sp = (sp <= sl ? sp : sl);
            byte[] da = dst.array();
            int dp = dst.arrayOffset() + dst.position();
            int dl = dst.arrayOffset() + dst.limit();
            assert (dp <= dl);
            dp = (dp <= dl ? dp : dl);

            int outputSize = 0;
            byte[]  outputByte;
            int     inputSize = 0;                 // Size of input
            byte[]  tmpBuf = new byte[3];

            try {
                while (sp < sl) {
                    outputByte = tmpBuf;
                    char c = sa[sp];
                    if (Character.isSurrogate(c)) {
                        if (sgp.parse(c, sa, sp, sl) < 0)
                            return sgp.error();
                        return sgp.unmappableResult();
                    }
                    outputSize = encodeSingle(c, outputByte);
                    if (outputSize == 0) { // DoubleByte
                        int ncode = encodeDouble(c);
                        if (ncode != UNMAPPABLE_ENCODING) {
                            if ((ncode & 0xFF0000) == 0) {
                                outputByte[0] = (byte) ((ncode & 0xff00) >> 8);
                                outputByte[1] = (byte) (ncode & 0xff);
                                outputSize = 2;
                            } else {
                                outputByte[0] = (byte) 0x8f;
                                outputByte[1] = (byte) ((ncode & 0xff00) >> 8);
                                outputByte[2] = (byte) (ncode & 0xff);
                                outputSize = 3;
                            }
                        } else {
                            return CoderResult.unmappableForLength(1);
                        }
                    }
                    if (dl - dp < outputSize)
                        return CoderResult.OVERFLOW;
                    // Put the byte in the output buffer
                    for (int i = 0; i < outputSize; i++) {
                        da[dp++] = outputByte[i];
                    }
                    sp++;
                }
                return CoderResult.UNDERFLOW;
            } finally {
                src.position(sp - src.arrayOffset());
                dst.position(dp - dst.arrayOffset());
            }
        }

        private CoderResult encodeBufferLoop(CharBuffer src,
                                             ByteBuffer dst)
        {
            int outputSize = 0;
            byte[]  outputByte;
            int     inputSize = 0;                 // Size of input
            byte[]  tmpBuf = new byte[3];

            int mark = src.position();

            try {
                while (src.hasRemaining()) {
                    outputByte = tmpBuf;
                    char c = src.get();
                    if (Character.isSurrogate(c)) {
                        if (sgp.parse(c, src) < 0)
                            return sgp.error();
                        return sgp.unmappableResult();
                    }
                    outputSize = encodeSingle(c, outputByte);
                    if (outputSize == 0) { // DoubleByte
                        int ncode = encodeDouble(c);
                        if (ncode != UNMAPPABLE_ENCODING) {
                            if ((ncode & 0xFF0000) == 0) {
                                outputByte[0] = (byte) ((ncode & 0xff00) >> 8);
                                outputByte[1] = (byte) (ncode & 0xff);
                                outputSize = 2;
                            } else {
                                outputByte[0] = (byte) 0x8f;
                                outputByte[1] = (byte) ((ncode & 0xff00) >> 8);
                                outputByte[2] = (byte) (ncode & 0xff);
                                outputSize = 3;
                            }
                        } else {
                            return CoderResult.unmappableForLength(1);
                        }
                    }
                    if (dst.remaining() < outputSize)
                        return CoderResult.OVERFLOW;
                    // Put the byte in the output buffer
                    for (int i = 0; i < outputSize; i++) {
                        dst.put(outputByte[i]);
                    }
                    mark++;
                }
                return CoderResult.UNDERFLOW;
            } finally {
                src.position(mark);
            }
        }

        protected CoderResult encodeLoop(CharBuffer src,
                                         ByteBuffer dst)
        {
            if (src.hasArray() && dst.hasArray())
                return encodeArrayLoop(src, dst);
            else
                return encodeBufferLoop(src, dst);
        }
    }
}