1 2 /* 3 * Copyright (c) 2006, 2012, Oracle and/or its affiliates. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. Oracle designates this 9 * particular file as subject to the "Classpath" exception as provided 10 * by Oracle in the LICENSE file that accompanied this code. 11 * 12 * This code is distributed in the hope that it will be useful, but WITHOUT 13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15 * version 2 for more details (a copy is included in the LICENSE file that 16 * accompanied this code). 17 * 18 * You should have received a copy of the GNU General Public License version 19 * 2 along with this work; if not, write to the Free Software Foundation, 20 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 21 * 22 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 23 * or visit www.oracle.com if you need additional information or have any 24 * questions. 25 */ 26 27 /* 28 */ 29 30 package sun.nio.cs.ext; 31 32 import java.nio.ByteBuffer; 33 import java.nio.charset.Charset; 34 import java.nio.charset.CharsetDecoder; 35 import java.nio.charset.CharsetEncoder; 36 import java.nio.charset.CoderResult; 37 import static sun.nio.cs.CharsetMapping.*; 38 39 // EBCDIC DBCS-only Korean 40 public class IBM834 extends Charset 41 { 42 public IBM834() { 43 super("x-IBM834", ExtendedCharsets.aliasesFor("x-IBM834")); 44 } 45 46 public boolean contains(Charset cs) { 47 return (cs instanceof IBM834); 48 } 49 50 public CharsetDecoder newDecoder() { 51 IBM933.initb2c(); 52 return new DoubleByte.Decoder_DBCSONLY( 53 this, IBM933.b2c, null, 0x40, 0xfe); // hardcode the b2min/max 54 } 55 56 public CharsetEncoder newEncoder() { 57 IBM933.initc2b(); 58 return new Encoder(this); 59 } 60 61 protected static class Encoder extends DoubleByte.Encoder_DBCSONLY { 62 public Encoder(Charset cs) { 63 super(cs, new byte[] {(byte)0xfe, (byte)0xfe}, 64 IBM933.c2b, IBM933.c2bIndex); 65 } 66 67 public int encodeChar(char ch) { 68 int bb = super.encodeChar(ch); 69 if (bb == UNMAPPABLE_ENCODING) { 70 // Cp834 has 6 additional non-roundtrip char->bytes 71 // mappings, see#6379808 72 if (ch == '\u00b7') { 73 return 0x4143; 74 } else if (ch == '\u00ad') { 75 return 0x4148; 76 } else if (ch == '\u2015') { 77 return 0x4149; 78 } else if (ch == '\u223c') { 79 return 0x42a1; 80 } else if (ch == '\uff5e') { 81 return 0x4954; 82 } else if (ch == '\u2299') { 83 return 0x496f; 84 } 85 } 86 return bb; 87 } 88 89 public boolean isLegalReplacement(byte[] repl) { 90 if (repl.length == 2 && 91 repl[0] == (byte)0xfe && repl[1] == (byte)0xfe) 92 return true; 93 return super.isLegalReplacement(repl); 94 } 95 96 } 97 }