1 /* 2 * Copyright (c) 2003, 2004, Oracle and/or its affiliates. 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. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * 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.DoubleByte; 33 import sun.nio.cs.HistoricallyNamedCharset; 34 import static sun.nio.cs.CharsetMapping.*; 35 36 public class IBM942C extends Charset implements HistoricallyNamedCharset 37 { 38 public IBM942C() { 39 super("x-IBM942C", ExtendedCharsets.aliasesFor("x-IBM942C")); 40 } 41 42 public String historicalName() { 43 return "Cp942C"; 44 } 45 46 public boolean contains(Charset cs) { 47 return ((cs.name().equals("US-ASCII")) 48 || (cs instanceof IBM942C)); 49 } 50 51 public CharsetDecoder newDecoder() { 52 return new DoubleByte.Decoder(this, 53 IBM942.b2c, 54 b2cSB, 55 0x40, 56 0xfc); 57 } 58 59 public CharsetEncoder newEncoder() { 60 return new DoubleByte.Encoder(this, c2b, c2bIndex); 61 } 62 63 final static char[] b2cSB; 64 final static char[] c2b; 65 final static char[] c2bIndex; 66 67 static { 68 IBM942.initb2c(); 69 70 // the mappings need udpate are 71 // u+001a <-> 0x1a 72 // u+001c <-> 0x1c 73 // u+005c <-> 0x5c 74 // u+007e <-> 0x7e 75 // u+007f <-> 0x7f 76 77 b2cSB = Arrays.copyOf(IBM942.b2cSB, IBM942.b2cSB.length); 78 b2cSB[0x1a] = 0x1a; 79 b2cSB[0x1c] = 0x1c; 80 b2cSB[0x5c] = 0x5c; 81 b2cSB[0x7e] = 0x7e; 82 b2cSB[0x7f] = 0x7f; 83 84 IBM942.initc2b(); 85 c2b = Arrays.copyOf(IBM942.c2b, IBM942.c2b.length); 86 c2bIndex = Arrays.copyOf(IBM942.c2bIndex, IBM942.c2bIndex.length); 87 c2b[c2bIndex[0] + 0x1a] = 0x1a; 88 c2b[c2bIndex[0] + 0x1c] = 0x1c; 89 c2b[c2bIndex[0] + 0x5c] = 0x5c; 90 c2b[c2bIndex[0] + 0x7e] = 0x7e; 91 c2b[c2bIndex[0] + 0x7f] = 0x7f; 92 } 93 }