1 /* 2 * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/util/ByteArrayBuffer.java $ 3 * $Revision: 496070 $ 4 * $Date: 2007-01-14 04:18:34 -0800 (Sun, 14 Jan 2007) $ 5 * 6 * ==================================================================== 7 * Licensed to the Apache Software Foundation (ASF) under one 8 * or more contributor license agreements. See the NOTICE file 9 * distributed with this work for additional information 10 * regarding copyright ownership. The ASF licenses this file 11 * to you under the Apache License, Version 2.0 (the 12 * "License"); you may not use this file except in compliance 13 * with the License. You may obtain a copy of the License at 14 * 15 * http://www.apache.org/licenses/LICENSE-2.0 16 * 17 * Unless required by applicable law or agreed to in writing, 18 * software distributed under the License is distributed on an 19 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 20 * KIND, either express or implied. See the License for the 21 * specific language governing permissions and limitations 22 * under the License. 23 * ==================================================================== 24 * 25 * This software consists of voluntary contributions made by many 26 * individuals on behalf of the Apache Software Foundation. For more 27 * information on the Apache Software Foundation, please see 28 * <http://www.apache.org/>. 29 * 30 */ 31 32 package org.apache.http.util; 33 34 /** 35 * A resizable byte array. 36 * 37 * @author <a href="mailto:oleg (at) ural.ru">Oleg Kalnichevski</a> 38 * 39 * @version $Revision: 496070 $ 40 * 41 * @since 4.0 42 * 43 * @deprecated Please use {@link java.net.URL#openConnection} instead. 44 * Please visit <a href="http://android-developers.blogspot.com/2011/09/androids-http-clients.html">this webpage</a> 45 * for further details. 46 */ 47 @Deprecated 48 public final class ByteArrayBuffer { 49 50 private byte[] buffer; 51 private int len; 52 53 public ByteArrayBuffer(int capacity) { 54 super(); 55 if (capacity < 0) { 56 throw new IllegalArgumentException("Buffer capacity may not be negative"); 57 } 58 this.buffer = new byte[capacity]; 59 } 60 61 private void expand(int newlen) { 62 byte newbuffer[] = new byte[Math.max(this.buffer.length << 1, newlen)]; 63 System.arraycopy(this.buffer, 0, newbuffer, 0, this.len); 64 this.buffer = newbuffer; 65 } 66 67 public void append(final byte[] b, int off, int len) { 68 if (b == null) { 69 return; 70 } 71 if ((off < 0) || (off > b.length) || (len < 0) || 72 ((off + len) < 0) || ((off + len) > b.length)) { 73 throw new IndexOutOfBoundsException(); 74 } 75 if (len == 0) { 76 return; 77 } 78 int newlen = this.len + len; 79 if (newlen > this.buffer.length) { 80 expand(newlen); 81 } 82 System.arraycopy(b, off, this.buffer, this.len, len); 83 this.len = newlen; 84 } 85 86 public void append(int b) { 87 int newlen = this.len + 1; 88 if (newlen > this.buffer.length) { 89 expand(newlen); 90 } 91 this.buffer[this.len] = (byte)b; 92 this.len = newlen; 93 } 94 95 public void append(final char[] b, int off, int len) { 96 if (b == null) { 97 return; 98 } 99 if ((off < 0) || (off > b.length) || (len < 0) || 100 ((off + len) < 0) || ((off + len) > b.length)) { 101 throw new IndexOutOfBoundsException(); 102 } 103 if (len == 0) { 104 return; 105 } 106 int oldlen = this.len; 107 int newlen = oldlen + len; 108 if (newlen > this.buffer.length) { 109 expand(newlen); 110 } 111 for (int i1 = off, i2 = oldlen; i2 < newlen; i1++, i2++) { 112 this.buffer[i2] = (byte) b[i1]; 113 } 114 this.len = newlen; 115 } 116 117 public void append(final CharArrayBuffer b, int off, int len) { 118 if (b == null) { 119 return; 120 } 121 append(b.buffer(), off, len); 122 } 123 124 public void clear() { 125 this.len = 0; 126 } 127 128 public byte[] toByteArray() { 129 byte[] b = new byte[this.len]; 130 if (this.len > 0) { 131 System.arraycopy(this.buffer, 0, b, 0, this.len); 132 } 133 return b; 134 } 135 136 public int byteAt(int i) { 137 return this.buffer[i]; 138 } 139 140 public int capacity() { 141 return this.buffer.length; 142 } 143 144 public int length() { 145 return this.len; 146 } 147 148 public byte[] buffer() { 149 return this.buffer; 150 } 151 152 public void setLength(int len) { 153 if (len < 0 || len > this.buffer.length) { 154 throw new IndexOutOfBoundsException(); 155 } 156 this.len = len; 157 } 158 159 public boolean isEmpty() { 160 return this.len == 0; 161 } 162 163 public boolean isFull() { 164 return this.len == this.buffer.length; 165 } 166 167 } 168
