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 import java.nio.ByteOrder; 23 24 import org.apache.mina.core.buffer.IoBuffer; 25 26 /** 27 * Provides absolute read access to a sequence of bytes. 28 * 29 * @author <a href="http://mina.apache.org">Apache MINA Project</a> 30 */ 31 public interface IoAbsoluteReader { 32 33 /** 34 * Get the index of the first byte that can be accessed. 35 */ 36 int first(); 37 38 /** 39 * Gets the index after the last byte that can be accessed. 40 */ 41 int last(); 42 43 /** 44 * Gets the total number of bytes that can be accessed. 45 */ 46 int length(); 47 48 /** 49 * Creates an array with a view of part of this array. 50 */ 51 ByteArray slice(int index, int length); 52 53 /** 54 * Gets the order of the bytes. 55 */ 56 ByteOrder order(); 57 58 /** 59 * Gets a <code>byte</code> from the given index. 60 */ 61 byte get(int index); 62 63 /** 64 * Gets enough bytes to fill the <code>IoBuffer</code> from the given index. 65 */ 66 public void get(int index, IoBuffer bb); 67 68 /** 69 * Gets a <code>short</code> from the given index. 70 */ 71 short getShort(int index); 72 73 /** 74 * Gets an <code>int</code> from the given index. 75 */ 76 int getInt(int index); 77 78 /** 79 * Gets a <code>long</code> from the given index. 80 */ 81 long getLong(int index); 82 83 /** 84 * Gets a <code>float</code> from the given index. 85 */ 86 float getFloat(int index); 87 88 /** 89 * Gets a <code>double</code> from the given index. 90 */ 91 double getDouble(int index); 92 93 /** 94 * Gets a <code>char</code> from the given index. 95 */ 96 char getChar(int index); 97 }