jdk/src/share/classes/sun/nio/cs/ext/IBM943C.java
author martin
Wed, 30 Jun 2010 16:11:32 -0700
changeset 5986 04eb44085c00
parent 5506 202f599c92aa
permissions -rw-r--r--
6934265: Add public method Character.isBmpCodePoint Summary: Move isBmpCodePoint from sun.nio.cs.Surrogate to Character Reviewed-by: sherman Contributed-by: Ulf Zibis <ulf.zibis@gmx.de>
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/*
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 * Copyright (c) 2003, 2004, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.  Oracle designates this
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 * particular file as subject to the "Classpath" exception as provided
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 * by Oracle in the LICENSE file that accompanied this code.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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package sun.nio.cs.ext;
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import java.nio.charset.Charset;
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import java.nio.charset.CharsetDecoder;
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import java.nio.charset.CharsetEncoder;
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import java.util.Arrays;
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import sun.nio.cs.HistoricallyNamedCharset;
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public class IBM943C extends Charset implements HistoricallyNamedCharset
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{
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    public IBM943C() {
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        super("x-IBM943C", ExtendedCharsets.aliasesFor("x-IBM943C"));
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    }
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    public String historicalName() {
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        return "Cp943C";
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    }
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    public boolean contains(Charset cs) {
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        return ((cs.name().equals("US-ASCII"))
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                || (cs instanceof IBM943C));
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    }
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    public CharsetDecoder newDecoder() {
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        return new DoubleByte.Decoder(this,
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                                      IBM943.b2c,
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                                      b2cSB,
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                                      0x40,
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                                      0xfc);
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    }
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    public CharsetEncoder newEncoder() {
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        return new DoubleByte.Encoder(this, c2b, c2bIndex);
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    }
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    final static char[] b2cSB;
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    final static char[] c2b;
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    final static char[] c2bIndex;
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    static {
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        IBM943.initb2c();
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        b2cSB = new char[0x100];
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        for (int i = 0; i < 0x80; i++) {
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            b2cSB[i] = (char)i;
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        }
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        for (int i = 0x80; i < 0x100; i++) {
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            b2cSB[i] = IBM943.b2cSB[i];
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        }
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        IBM943.initc2b();
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        c2b = Arrays.copyOf(IBM943.c2b, IBM943.c2b.length);
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        c2bIndex = Arrays.copyOf(IBM943.c2bIndex, IBM943.c2bIndex.length);
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        for (char c = '\0'; c < '\u0080'; ++c) {
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            int index = c2bIndex[c >> 8];
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            c2b[index + (c & 0xff)] = c;
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        }
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    }
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}