Showing the changes to java/pkg/sun/nio/cs/SingleByteDecoder.java (1 of 18352 files). Show all
Unified · Split
| @@ -0,0 +1,116 @@ | ||
| 1 | +/* | |
| 2 | + * Copyright (c) 2000, 2006, 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 | +/* | |
| 27 | + */ | |
| 28 | + | |
| 29 | +package sun.nio.cs; | |
| 30 | + | |
| 31 | +import java.nio.ByteBuffer; | |
| 32 | +import java.nio.CharBuffer; | |
| 33 | +import java.nio.charset.Charset; | |
| 34 | +import java.nio.charset.CharsetDecoder; | |
| 35 | +import java.nio.charset.CoderResult; | |
| 36 | +import java.nio.charset.CharacterCodingException; | |
| 37 | +import java.nio.charset.MalformedInputException; | |
| 38 | +import java.nio.charset.UnmappableCharacterException; | |
| 39 | + | |
| 40 | + | |
| 41 | +public abstract class SingleByteDecoder | |
| 42 | + extends CharsetDecoder | |
| 43 | +{ | |
| 44 | + | |
| 45 | + private final String byteToCharTable; | |
| 46 | + | |
| 47 | + protected SingleByteDecoder(Charset cs, String byteToCharTable) { | |
| 48 | + super(cs, 1.0f, 1.0f); | |
| 49 | + this.byteToCharTable = byteToCharTable; | |
| 50 | + } | |
| 51 | + | |
| 52 | + private CoderResult decodeArrayLoop(ByteBuffer src, CharBuffer dst) { | |
| 53 | + byte[] sa = src.array(); | |
| 54 | + int sp = src.arrayOffset() + src.position(); | |
| 55 | + int sl = src.arrayOffset() + src.limit(); | |
| 56 | + assert (sp <= sl); | |
| 57 | + sp = (sp <= sl ? sp : sl); | |
| 58 | + char[] da = dst.array(); | |
| 59 | + int dp = dst.arrayOffset() + dst.position(); | |
| 60 | + int dl = dst.arrayOffset() + dst.limit(); | |
| 61 | + assert (dp <= dl); | |
| 62 | + dp = (dp <= dl ? dp : dl); | |
| 63 | + | |
| 64 | + try { | |
| 65 | + while (sp < sl) { | |
| 66 | + int b = sa[sp]; | |
| 67 | + | |
| 68 | + char c = decode(b); | |
| 69 | + if (c == '\uFFFD') | |
| 70 | + return CoderResult.unmappableForLength(1); | |
| 71 | + if (dl - dp < 1) | |
| 72 | + return CoderResult.OVERFLOW; | |
| 73 | + da[dp++] = c; | |
| 74 | + sp++; | |
| 75 | + } | |
| 76 | + return CoderResult.UNDERFLOW; | |
| 77 | + } finally { | |
| 78 | + src.position(sp - src.arrayOffset()); | |
| 79 | + dst.position(dp - dst.arrayOffset()); | |
| 80 | + } | |
| 81 | + } | |
| 82 | + | |
| 83 | + private CoderResult decodeBufferLoop(ByteBuffer src, CharBuffer dst) { | |
| 84 | + int mark = src.position(); | |
| 85 | + try { | |
| 86 | + while (src.hasRemaining()) { | |
| 87 | + int b = src.get(); | |
| 88 | + | |
| 89 | + char c = decode(b); | |
| 90 | + if (c == '\uFFFD') | |
| 91 | + return CoderResult.unmappableForLength(1); | |
| 92 | + if (!dst.hasRemaining()) | |
| 93 | + return CoderResult.OVERFLOW; | |
| 94 | + mark++; | |
| 95 | + dst.put(c); | |
| 96 | + } | |
| 97 | + return CoderResult.UNDERFLOW; | |
| 98 | + } finally { | |
| 99 | + src.position(mark); | |
| 100 | + } | |
| 101 | + } | |
| 102 | + | |
| 103 | + protected CoderResult decodeLoop(ByteBuffer src, CharBuffer dst) { | |
| 104 | + if (true && src.hasArray() && dst.hasArray()) | |
| 105 | + return decodeArrayLoop(src, dst); | |
| 106 | + else | |
| 107 | + return decodeBufferLoop(src, dst); | |
| 108 | + } | |
| 109 | + | |
| 110 | + public char decode(int byteIndex) { | |
| 111 | + int n = byteIndex + 128; | |
| 112 | + if (n >= byteToCharTable.length() || n < 0) | |
| 113 | + return '\uFFFD'; | |
| 114 | + return byteToCharTable.charAt(n); | |
| 115 | + } | |
| 116 | +} | |