/*
 * Copyright (c) 2008, 2021, 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
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package sun.nio.cs.ext;

import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.nio.charset.CharsetEncoder;
import sun.nio.cs.StandardCharsets;
import sun.nio.cs.SingleByte;
import sun.nio.cs.HistoricallyNamedCharset;
import static sun.nio.cs.CharsetMapping.*;

public class IBM921 extends Charset implements HistoricallyNamedCharset
{
    public IBM921() {
        super("x-IBM921", ExtendedCharsets.aliasesFor("x-IBM921"));
    }

    public String historicalName() {
        return "Cp921";
    }

    public boolean contains(Charset cs) {
        return (cs instanceof IBM921);
    }

    public CharsetDecoder newDecoder() {
        return new SingleByte.Decoder(this, Holder.b2c, false, false);
    }

    public CharsetEncoder newEncoder() {
        return new SingleByte.Encoder(this, Holder.c2b, Holder.c2bIndex, false);
    }

    private static class Holder {
        private static final String b2cTable = 
        "\u0080\u0081\u0082\u0083\u0084\u0085\u0086\u0087" +      // 0x80 - 0x87
        "\u0088\u0089\u008A\u008B\u008C\u008D\u008E\u008F" +      // 0x88 - 0x8f
        "\u0090\u0091\u0092\u0093\u0094\u0095\u0096\u0097" +      // 0x90 - 0x97
        "\u0098\u0099\u009A\u009B\u009C\u009D\u009E\u009F" +      // 0x98 - 0x9f
        "\u00A0\u201D\u00A2\u00A3\u00A4\u201E\u00A6\u00A7" +      // 0xa0 - 0xa7
        "\u00D8\u00A9\u0156\u00AB\u00AC\u00AD\u00AE\u00C6" +      // 0xa8 - 0xaf
        "\u00B0\u00B1\u00B2\u00B3\u201C\u00B5\u00B6\u00B7" +      // 0xb0 - 0xb7
        "\u00F8\u00B9\u0157\u00BB\u00BC\u00BD\u00BE\u00E6" +      // 0xb8 - 0xbf
        "\u0104\u012E\u0100\u0106\u00C4\u00C5\u0118\u0112" +      // 0xc0 - 0xc7
        "\u010C\u00C9\u0179\u0116\u0122\u0136\u012A\u013B" +      // 0xc8 - 0xcf
        "\u0160\u0143\u0145\u00D3\u014C\u00D5\u00D6\u00D7" +      // 0xd0 - 0xd7
        "\u0172\u0141\u015A\u016A\u00DC\u017B\u017D\u00DF" +      // 0xd8 - 0xdf
        "\u0105\u012F\u0101\u0107\u00E4\u00E5\u0119\u0113" +      // 0xe0 - 0xe7
        "\u010D\u00E9\u017A\u0117\u0123\u0137\u012B\u013C" +      // 0xe8 - 0xef
        "\u0161\u0144\u0146\u00F3\u014D\u00F5\u00F6\u00F7" +      // 0xf0 - 0xf7
        "\u0173\u0142\u015B\u016B\u00FC\u017C\u017E\u2019" +      // 0xf8 - 0xff
        "\u0000\u0001\u0002\u0003\u0004\u0005\u0006\u0007" +      // 0x00 - 0x07
        "\b\t\n\u000B\f\r\u000E\u000F" +      // 0x08 - 0x0f
        "\u0010\u0011\u0012\u0013\u0014\u0015\u0016\u0017" +      // 0x10 - 0x17
        "\u0018\u0019\u001A\u001B\u001C\u001D\u001E\u001F" +      // 0x18 - 0x1f
        "\u0020\u0021\"\u0023\u0024\u0025\u0026\'" +      // 0x20 - 0x27
        "\u0028\u0029\u002A\u002B\u002C\u002D\u002E\u002F" +      // 0x28 - 0x2f
        "\u0030\u0031\u0032\u0033\u0034\u0035\u0036\u0037" +      // 0x30 - 0x37
        "\u0038\u0039\u003A\u003B\u003C\u003D\u003E\u003F" +      // 0x38 - 0x3f
        "\u0040\u0041\u0042\u0043\u0044\u0045\u0046\u0047" +      // 0x40 - 0x47
        "\u0048\u0049\u004A\u004B\u004C\u004D\u004E\u004F" +      // 0x48 - 0x4f
        "\u0050\u0051\u0052\u0053\u0054\u0055\u0056\u0057" +      // 0x50 - 0x57
        "\u0058\u0059\u005A\u005B\\\u005D\u005E\u005F" +      // 0x58 - 0x5f
        "\u0060\u0061\u0062\u0063\u0064\u0065\u0066\u0067" +      // 0x60 - 0x67
        "\u0068\u0069\u006A\u006B\u006C\u006D\u006E\u006F" +      // 0x68 - 0x6f
        "\u0070\u0071\u0072\u0073\u0074\u0075\u0076\u0077" +      // 0x70 - 0x77
        "\u0078\u0079\u007A\u007B\u007C\u007D\u007E\u007F" ;      // 0x78 - 0x7f


        private static final char[] b2c = b2cTable.toCharArray();
        private static final char[] c2b = new char[0x300];
        private static final char[] c2bIndex = new char[0x100];

        static {
            char[] b2cMap = b2c;
            char[] c2bNR = null;
            SingleByte.initC2B(b2cMap, c2bNR, c2b, c2bIndex);
        }
    }
}