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My first initial commit with all of mine experimental changes.

Dmitry Kabak (userdima committed 13 years ago

Commit d37b88d1 parent 3f5b46618352 files · +2598093 −-8690Browse files

Showing the changes to java/pkg/sun/nio/cs/SingleByteDecoder.java (1 of 18352 files). Show all

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java/pkg/sun/nio/cs/SingleByteDecoder.java+116−0
@@ -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
29package sun.nio.cs;
30
31import java.nio.ByteBuffer;
32import java.nio.CharBuffer;
33import java.nio.charset.Charset;
34import java.nio.charset.CharsetDecoder;
35import java.nio.charset.CoderResult;
36import java.nio.charset.CharacterCodingException;
37import java.nio.charset.MalformedInputException;
38import java.nio.charset.UnmappableCharacterException;
39
40
41public 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}