1 /* 2 * Copyright 2003-2004 Sun Microsystems, Inc. All Rights Reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Sun designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Sun in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 22 * CA 95054 USA or visit www.sun.com if you need additional information or 23 * have any questions. 24 */ 25 26 package sun.nio.cs.ext; 27 28 import java.nio.charset.Charset; 29 import java.nio.charset.CharsetDecoder; 30 import java.nio.charset.CharsetEncoder; 31 import java.util.Arrays; 32 import sun.nio.cs.HistoricallyNamedCharset; 33 34 public class IBM943C extends Charset implements HistoricallyNamedCharset 35 { 36 37 public IBM943C() { 38 super("x-IBM943C", ExtendedCharsets.aliasesFor("x-IBM943C")); 39 } 40 41 public String historicalName() { 42 return "Cp943C"; 43 } 44 45 public boolean contains(Charset cs) { 46 return ((cs.name().equals("US-ASCII")) 47 || (cs instanceof IBM943C)); 48 } 49 50 public CharsetDecoder newDecoder() { 51 return new DoubleByte.Decoder(this, 52 IBM943.b2c, 53 b2cSB, 54 0x40, 55 0xfc); 56 } 57 58 public CharsetEncoder newEncoder() { 59 return new DoubleByte.Encoder(this, c2b, c2bIndex); 60 } 61 62 final static char[] b2cSB; 63 final static char[] c2b; 64 final static char[] c2bIndex; 65 66 static { 67 IBM943.initb2c(); 68 b2cSB = new char[0x100]; 69 for (int i = 0; i < 0x80; i++) { 70 b2cSB[i] = (char)i; 71 } 72 for (int i = 0x80; i < 0x100; i++) { 73 b2cSB[i] = IBM943.b2cSB[i]; 74 } 75 76 IBM943.initc2b(); 77 c2b = Arrays.copyOf(IBM943.c2b, IBM943.c2b.length); 78 c2bIndex = Arrays.copyOf(IBM943.c2bIndex, IBM943.c2bIndex.length); 79 for (char c = '\0'; c < '\u0080'; ++c) { 80 int index = c2bIndex[c >> 8]; 81 c2b[index + (c & 0xff)] = c; 82 } 83 } 84 }