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 relative read access to a sequence of bytes. 30 * 31 * @author The Apache MINA Project (dev@mina.apache.org) 32 */ 33 public interface IoRelativeReader 34 { 35 36 /** 37 * Gets the number of remaining bytes that can be read. 38 */ 39 int getRemaining(); 40 41 42 /** 43 * Checks if there are any remaining bytes that can be read. 44 */ 45 boolean hasRemaining(); 46 47 48 /** 49 * Advances the reader by the given number of bytes. 50 */ 51 void skip( int length ); 52 53 54 /** 55 * Creates an array with a view of part of this array. 56 */ 57 ByteArray slice( 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> and advances the reader. 68 */ 69 byte get(); 70 71 72 /** 73 * Gets enough bytes to fill the <code>IoBuffer</code> and advances the reader. 74 */ 75 void get( IoBuffer bb ); 76 77 78 /** 79 * Gets a <code>short</code> and advances the reader. 80 */ 81 short getShort(); 82 83 84 /** 85 * Gets an <code>int</code> and advances the reader. 86 */ 87 int getInt(); 88 89 90 /** 91 * Gets a <code>long</code> and advances the reader. 92 */ 93 long getLong(); 94 95 96 /** 97 * Gets a <code>float</code> and advances the reader. 98 */ 99 float getFloat(); 100 101 102 /** 103 * Gets a <code>double</code> and advances the reader. 104 */ 105 double getDouble(); 106 107 108 /** 109 * Gets a <code>char</code> and advances the reader. 110 */ 111 char getChar(); 112 }