/*
 * Copyright (c) 2002, 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 IBM33722
    extends Charset
    implements HistoricallyNamedCharset
{
    public IBM33722() {
        super("x-IBM33722",  $ALIASES$);
    }

    public String historicalName() {
        return "Cp33722";
    }

    public boolean contains(Charset cs) {
        return ((cs.name().equals("US-ASCII"))
                || (cs instanceof IBM33722));
    }

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

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

    private static class Decoder extends IBM29626C.Decoder {

        private final String G2_b = "\uA1F1\uA1F2\uA2CC";

        private final String G2_c = "\uFFE0\uFFE1\uFFE2";

        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"+
            "\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\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"+
            "\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";

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

        protected Decoder(Charset cs) {
            super(cs);
            this.dec0201 = DEC0201;
            this.dec0208 = DEC0208;
            this.dec0212 = DEC0212;
        }

        protected char decodeSingle(int b) {
            if (b == 0x5c)
                return '\u00A5';
            if (b == 0x7e)
                return '\u203E';
            if (b < 0x8e)
                return (char) b;
            if (b < 0x90)
                return UNMAPPABLE_DECODING;
            if (b < 0xa0)
                return (char) b;
            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 static class Encoder extends IBM29626C.Encoder {

        private final String G2_c = 
            "\u2015\u2225\u4FE0\u525D\u551E\u555E\u5699\u56CA\u5861\u5C5B"+
            "\u5C62\u6414\u6451\u6522\u6805\u688E\u6D00\u6F1E\u6F51\u7006"+
            "\u70FF\u7130\u7626\u79B1\u7C1E\u7E48\u7E61\u7E6B\u8141\u8346"+
            "\u840A\u8523\u8741\u881F\u8EC0\u91AC\u91B1\u92CA\u9830\u9839"+
            "\u985A\u9A52\u9DD7\u9E7C\u9EB4\u9EB5\uFF0D\uFF5E\uFFE0\uFFE1"+
            "\uFFE2\uFFE4";

        private final String G2_b =
            "\uA1BD\uA1C2\uB6A2\uC7ED\uC0E6\uB0A2\uB3FA\uC7B9\uC5B6\uD6A2"+
            "\uBCC8\uC1DF\uC4CF\uDAB9\uBAF4\uDBF4\uC6C2\uC2CD\uC8AE\uC6C2"+
            "\uB6A2\uB1EB\uC1E9\uC5F8\uC3BD\uE5DA\uBDAB\uB7D2\uE7A6\uB7D5"+
            "\uCDE9\uBED5\uB0A2\uCFB9\uB6ED\uBEDF\uC8B0\uB3FA\uCBCB\uF0F8"+
            "\uC5BF\uC2CD\uB2AA\uB8B4\uB9ED\uCCCD\uA1DD\uA1C1\uA1F1\uA1F2"+
            "\uA2CC\uA2C3";

        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"+
            "\u8F91\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";

        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"+
            "\uF3B8\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 SingleByte.Encoder enc0201;
        private final DoubleByte.Encoder enc0208;
        private final DoubleByte.Encoder enc0212;

        protected Encoder(Charset cs) {
            super(cs);
            this.enc0201 = ENC0201;
            this.enc0208 = ENC0208;
            this.enc0212 = ENC0212;
        }

        private final static String G1_c = "\u00A2\u00A3\u00AC\\\u007e";

        protected int encodeSingle(char inputChar, byte[] outputByte) {
            if (inputChar == 0xa5) {
                outputByte[0] = (byte)0x5c;
                return 1;
            }
            if (inputChar == 0x203e) {
                outputByte[0] = (byte)0x7e;
                return 1;
            }
            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 (inputChar == 0x5c || inputChar == 0x7e) {
                b = UNMAPPABLE_ENCODING;
            }
            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 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;
        }
    }
}