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 package sun.awt.motif; 27 28 import java.nio.CharBuffer; 29 import java.nio.ByteBuffer; 30 import java.nio.charset.*; 31 import sun.nio.cs.ext.*; 32 import static sun.nio.cs.CharsetMapping.*; 33 34 public class X11KSC5601 extends Charset { 35 public X11KSC5601 () { 36 super("X11KSC5601", null); 37 } 38 public CharsetEncoder newEncoder() { 39 return new Encoder(this); 40 } 41 public CharsetDecoder newDecoder() { 42 return new Decoder(this); 43 } 44 45 public boolean contains(Charset cs) { 46 return cs instanceof X11KSC5601; 47 } 48 49 private class Encoder extends CharsetEncoder { 50 private DoubleByte.Encoder enc = (DoubleByte.Encoder)new EUC_KR().newEncoder(); 51 52 public Encoder(Charset cs) { 53 super(cs, 2.0f, 2.0f); 54 } 55 56 public boolean canEncode(char c) { 57 if (c <= 0x7F) { 58 return false; 59 } 60 return enc.canEncode(c); 61 } 62 63 protected int encodeDouble(char c) { 64 return enc.encodeChar(c); 65 } 66 67 protected CoderResult encodeLoop(CharBuffer src, ByteBuffer dst) { 68 char[] sa = src.array(); 69 int sp = src.arrayOffset() + src.position(); 70 int sl = src.arrayOffset() + src.limit(); 71 byte[] da = dst.array(); 72 int dp = dst.arrayOffset() + dst.position(); 73 int dl = dst.arrayOffset() + dst.limit(); 74 75 try { 76 while (sp < sl) { 77 char c = sa[sp]; 78 if (c <= '\u007f') 79 return CoderResult.unmappableForLength(1); 80 int ncode = encodeDouble(c); 81 if (ncode != 0 && c != '\u0000' ) { 82 da[dp++] = (byte) ((ncode >> 8) & 0x7f); 83 da[dp++] = (byte) (ncode & 0x7f); 84 sp++; 85 continue; 86 } 87 return CoderResult.unmappableForLength(1); 88 } 89 return CoderResult.UNDERFLOW; 90 } finally { 91 src.position(sp - src.arrayOffset()); 92 dst.position(dp - dst.arrayOffset()); 93 } 94 } 95 public boolean isLegalReplacement(byte[] repl) { 96 return true; 97 } 98 } 99 100 private class Decoder extends CharsetDecoder { 101 private DoubleByte.Decoder dec = (DoubleByte.Decoder)new EUC_KR().newDecoder(); 102 103 public Decoder(Charset cs) { 104 super(cs, 0.5f, 1.0f); 105 } 106 107 protected char decodeDouble(int b1, int b2) { 108 return dec.decodeDouble(b1, b2); 109 } 110 111 protected CoderResult decodeLoop(ByteBuffer src, CharBuffer dst) { 112 byte[] sa = src.array(); 113 int sp = src.arrayOffset() + src.position(); 114 int sl = src.arrayOffset() + src.limit(); 115 assert (sp <= sl); 116 sp = (sp <= sl ? sp : sl); 117 char[] da = dst.array(); 118 int dp = dst.arrayOffset() + dst.position(); 119 int dl = dst.arrayOffset() + dst.limit(); 120 assert (dp <= dl); 121 dp = (dp <= dl ? dp : dl); 122 123 124 try { 125 while (sp < sl) { 126 if ( sl - sp < 2) { 127 return CoderResult.UNDERFLOW; 128 } 129 int b1 = sa[sp] & 0xFF | 0x80; 130 int b2 = sa[sp + 1] & 0xFF | 0x80; 131 char c = decodeDouble(b1, b2); 132 if (c == UNMAPPABLE_DECODING) { 133 return CoderResult.unmappableForLength(2); 134 } 135 if (dl - dp < 1) 136 return CoderResult.OVERFLOW; 137 da[dp++] = c; 138 sp +=2; 139 } 140 return CoderResult.UNDERFLOW; 141 } finally { 142 src.position(sp - src.arrayOffset()); 143 dst.position(dp - dst.arrayOffset()); 144 } 145 146 } 147 } 148 }