1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 *
19 */
20 package org.apache.mina.util.byteaccess;
21
22
23 import java.nio.ByteOrder;
24
25 import org.apache.mina.core.buffer.IoBuffer;
26
27
28 /**
29 * Provides absolute read access to a sequence of bytes.
30 *
31 * @author The Apache MINA Project (dev@mina.apache.org)
32 */
33 public interface IoAbsoluteReader
34 {
35
36 /**
37 * Get the index of the first byte that can be accessed.
38 */
39 int first();
40
41
42 /**
43 * Gets the index after the last byte that can be accessed.
44 */
45 int last();
46
47
48 /**
49 * Gets the total number of bytes that can be accessed.
50 */
51 int length();
52
53
54 /**
55 * Creates an array with a view of part of this array.
56 */
57 ByteArray slice( int index, int length );
58
59
60 /**
61 * Gets the order of the bytes.
62 */
63 ByteOrder order();
64
65
66 /**
67 * Gets a <code>byte</code> from the given index.
68 */
69 byte get( int index );
70
71
72 /**
73 * Gets enough bytes to fill the <code>IoBuffer</code> from the given index.
74 */
75 public void get( int index, IoBuffer bb );
76
77
78 /**
79 * Gets a <code>short</code> from the given index.
80 */
81 short getShort( int index );
82
83
84 /**
85 * Gets an <code>int</code> from the given index.
86 */
87 int getInt( int index );
88
89
90 /**
91 * Gets a <code>long</code> from the given index.
92 */
93 long getLong( int index );
94
95
96 /**
97 * Gets a <code>float</code> from the given index.
98 */
99 float getFloat( int index );
100
101
102 /**
103 * Gets a <code>double</code> from the given index.
104 */
105 double getDouble( int index );
106
107
108 /**
109 * Gets a <code>char</code> from the given index.
110 */
111 char getChar( int index );
112 }