1 /* 2 * Copyright (c) 1996, 2005, 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 import java.nio.CharBuffer; 27 import java.nio.ByteBuffer; 28 import java.nio.charset.*; 29 import sun.nio.cs.ext.EUC_KR; 30 31 public class X11KSC5601_OLD extends Charset { 32 public X11KSC5601_OLD () { 33 super("X11KSC5601-OLD", null); 34 } 35 public CharsetEncoder newEncoder() { 36 return new Encoder(this); 37 } 38 public CharsetDecoder newDecoder() { 39 return new Decoder(this); 40 } 41 42 public boolean contains(Charset cs) { 43 return cs instanceof X11KSC5601_OLD; 44 } 45 46 private class Encoder extends EUC_KR_OLD.Encoder { 47 public Encoder(Charset cs) { 48 super(cs); 49 } 50 51 public boolean canEncode(char c) { 52 if (c <= 0x7F) { 53 return false; 54 } 55 return super.canEncode(c); 56 } 57 58 protected CoderResult encodeLoop(CharBuffer src, ByteBuffer dst) { 59 char[] sa = src.array(); 60 int sp = src.arrayOffset() + src.position(); 61 int sl = src.arrayOffset() + src.limit(); 62 byte[] da = dst.array(); 63 int dp = dst.arrayOffset() + dst.position(); 64 int dl = dst.arrayOffset() + dst.limit(); 65 66 try { 67 while (sp < sl) { 68 char c = sa[sp]; 69 if (c <= '\u007f') 70 return CoderResult.unmappableForLength(1); 71 int ncode = encodeDouble(c); 72 if (ncode != 0 && c != '\u0000' ) { 73 da[dp++] = (byte) ((ncode >> 8) & 0x7f); 74 da[dp++] = (byte) (ncode & 0x7f); 75 sp++; 76 continue; 77 } 78 return CoderResult.unmappableForLength(1); 79 } 80 return CoderResult.UNDERFLOW; 81 } finally { 82 src.position(sp - src.arrayOffset()); 83 dst.position(dp - dst.arrayOffset()); 84 } 85 } 86 public boolean isLegalReplacement(byte[] repl) { 87 return true; 88 } 89 } 90 91 private class Decoder extends EUC_KR_OLD.Decoder { 92 public Decoder(Charset cs) { 93 super(cs); 94 } 95 96 protected CoderResult decodeLoop(ByteBuffer src, CharBuffer dst) { 97 byte[] sa = src.array(); 98 int sp = src.arrayOffset() + src.position(); 99 int sl = src.arrayOffset() + src.limit(); 100 assert (sp <= sl); 101 sp = (sp <= sl ? sp : sl); 102 char[] da = dst.array(); 103 int dp = dst.arrayOffset() + dst.position(); 104 int dl = dst.arrayOffset() + dst.limit(); 105 assert (dp <= dl); 106 dp = (dp <= dl ? dp : dl); 107 108 109 try { 110 while (sp < sl) { 111 if ( sl - sp < 2) { 112 return CoderResult.UNDERFLOW; 113 } 114 int b1 = sa[sp] & 0xFF | 0x80; 115 int b2 = sa[sp + 1] & 0xFF | 0x80; 116 char c = decodeDouble(b1, b2); 117 if (c == replacement().charAt(0)) { 118 return CoderResult.unmappableForLength(2); 119 } 120 if (dl - dp < 1) 121 return CoderResult.OVERFLOW; 122 da[dp++] = c; 123 sp +=2; 124 } 125 return CoderResult.UNDERFLOW; 126 } finally { 127 src.position(sp - src.arrayOffset()); 128 dst.position(dp - dst.arrayOffset()); 129 } 130 131 } 132 } 133 }