1069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project/* 2069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * $HeadURL: http://svn.apache.org/repos/asf/httpcomponents/httpcore/trunk/module-main/src/main/java/org/apache/http/util/ByteArrayBuffer.java $ 3069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * $Revision: 496070 $ 4069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * $Date: 2007-01-14 04:18:34 -0800 (Sun, 14 Jan 2007) $ 5069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 6069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * ==================================================================== 7069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * Licensed to the Apache Software Foundation (ASF) under one 8069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * or more contributor license agreements. See the NOTICE file 9069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * distributed with this work for additional information 10069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * regarding copyright ownership. The ASF licenses this file 11069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * to you under the Apache License, Version 2.0 (the 12069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * "License"); you may not use this file except in compliance 13069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * with the License. You may obtain a copy of the License at 14069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 15069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * http://www.apache.org/licenses/LICENSE-2.0 16069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 17069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * Unless required by applicable law or agreed to in writing, 18069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * software distributed under the License is distributed on an 19069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 20069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * KIND, either express or implied. See the License for the 21069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * specific language governing permissions and limitations 22069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * under the License. 23069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * ==================================================================== 24069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 25069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * This software consists of voluntary contributions made by many 26069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * individuals on behalf of the Apache Software Foundation. For more 27069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * information on the Apache Software Foundation, please see 28069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * <http://www.apache.org/>. 29069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 30069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project */ 31069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 32069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectpackage org.apache.http.util; 33069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 34069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project/** 35069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * A resizable byte array. 36069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 37069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * @author <a href="mailto:oleg@ural.ru">Oleg Kalnichevski</a> 38069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 39069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * @version $Revision: 496070 $ 40069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * 41069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project * @since 4.0 42d42abb2fd917184764daf22f5f299e848b8701d7Narayan Kamath * 43d42abb2fd917184764daf22f5f299e848b8701d7Narayan Kamath * @deprecated Please use {@link java.net.URL#openConnection} instead. 44d42abb2fd917184764daf22f5f299e848b8701d7Narayan Kamath * Please visit <a href="http://android-developers.blogspot.com/2011/09/androids-http-clients.html">this webpage</a> 45d42abb2fd917184764daf22f5f299e848b8701d7Narayan Kamath * for further details. 46069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project */ 47d42abb2fd917184764daf22f5f299e848b8701d7Narayan Kamath@Deprecated 48069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Projectpublic final class ByteArrayBuffer { 49069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 50069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project private byte[] buffer; 51069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project private int len; 52069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 53069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public ByteArrayBuffer(int capacity) { 54069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project super(); 55069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if (capacity < 0) { 56069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project throw new IllegalArgumentException("Buffer capacity may not be negative"); 57069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 58069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project this.buffer = new byte[capacity]; 59069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 60069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 61069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project private void expand(int newlen) { 62069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project byte newbuffer[] = new byte[Math.max(this.buffer.length << 1, newlen)]; 63069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project System.arraycopy(this.buffer, 0, newbuffer, 0, this.len); 64069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project this.buffer = newbuffer; 65069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 66069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 67069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public void append(final byte[] b, int off, int len) { 68069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if (b == null) { 69069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return; 70069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 71069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if ((off < 0) || (off > b.length) || (len < 0) || 72069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project ((off + len) < 0) || ((off + len) > b.length)) { 73069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project throw new IndexOutOfBoundsException(); 74069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 75069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if (len == 0) { 76069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return; 77069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 78069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project int newlen = this.len + len; 79069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if (newlen > this.buffer.length) { 80069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project expand(newlen); 81069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 82069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project System.arraycopy(b, off, this.buffer, this.len, len); 83069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project this.len = newlen; 84069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 85069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 86069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public void append(int b) { 87069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project int newlen = this.len + 1; 88069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if (newlen > this.buffer.length) { 89069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project expand(newlen); 90069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 91069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project this.buffer[this.len] = (byte)b; 92069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project this.len = newlen; 93069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 94069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 95069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public void append(final char[] b, int off, int len) { 96069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if (b == null) { 97069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return; 98069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 99069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if ((off < 0) || (off > b.length) || (len < 0) || 100069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project ((off + len) < 0) || ((off + len) > b.length)) { 101069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project throw new IndexOutOfBoundsException(); 102069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 103069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if (len == 0) { 104069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return; 105069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 106069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project int oldlen = this.len; 107069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project int newlen = oldlen + len; 108069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if (newlen > this.buffer.length) { 109069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project expand(newlen); 110069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 111069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project for (int i1 = off, i2 = oldlen; i2 < newlen; i1++, i2++) { 112069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project this.buffer[i2] = (byte) b[i1]; 113069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 114069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project this.len = newlen; 115069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 116069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 117069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public void append(final CharArrayBuffer b, int off, int len) { 118069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if (b == null) { 119069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return; 120069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 121069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project append(b.buffer(), off, len); 122069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 123069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 124069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public void clear() { 125069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project this.len = 0; 126069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 127069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 128069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public byte[] toByteArray() { 129069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project byte[] b = new byte[this.len]; 130069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if (this.len > 0) { 131069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project System.arraycopy(this.buffer, 0, b, 0, this.len); 132069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 133069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return b; 134069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 135069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 136069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public int byteAt(int i) { 137069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return this.buffer[i]; 138069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 139069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 140069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public int capacity() { 141069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return this.buffer.length; 142069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 143069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 144069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public int length() { 145069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return this.len; 146069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 147069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 148069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public byte[] buffer() { 149069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return this.buffer; 150069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 151069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 152069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public void setLength(int len) { 153069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project if (len < 0 || len > this.buffer.length) { 154069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project throw new IndexOutOfBoundsException(); 155069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 156069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project this.len = len; 157069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 158069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 159069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public boolean isEmpty() { 160069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return this.len == 0; 161069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 162069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 163069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project public boolean isFull() { 164069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project return this.len == this.buffer.length; 165069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project } 166069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project 167069490a5ca2fd1988d29daf45d892f47ad665115The Android Open Source Project} 168