src/java.desktop/unix/classes/sun/font/X11GBK.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * particular file as subject to the "Classpath" exception as provided
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 * 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).
 *
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package sun.font;

import java.nio.charset.*;
import sun.nio.cs.*;
import static sun.nio.cs.CharsetMapping.*;

public final class X11GBK extends Charset {
    public X11GBK () {
        super("X11GBK", null);
    }
    @Override
    public CharsetEncoder newEncoder() {
        return new Encoder(this);
    }
    @Override
    public CharsetDecoder newDecoder() {
        return new GBK().newDecoder();
    }

    @Override
    public boolean contains(Charset cs) {
        return cs instanceof X11GBK;
    }

    private static final class Encoder extends DoubleByte.Encoder {

        private DoubleByte.Encoder enc = (DoubleByte.Encoder)new GBK().newEncoder();

        Encoder(Charset cs) {
            super(cs, (char[])null, (char[])null);
        }

        @Override
        public boolean canEncode(char ch){
            if (ch < 0x80) return false;
            return enc.canEncode(ch);
        }

        @Override
        public int encodeChar(char ch) {
            if (ch < 0x80)
                return UNMAPPABLE_ENCODING;
            return enc.encodeChar(ch);
        }
    }
}