annotate src/org/eclipse/jetty/io/View.java @ 1034:563458c4dc93

remove HttpGenerator.reset()
author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 03 Nov 2016 21:02:59 -0600
parents eca26899c4bc
children a7319f14ba1e
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1 //
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2 // ========================================================================
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3 // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
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4 // ------------------------------------------------------------------------
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5 // All rights reserved. This program and the accompanying materials
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6 // are made available under the terms of the Eclipse Public License v1.0
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7 // and Apache License v2.0 which accompanies this distribution.
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8 //
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9 // The Eclipse Public License is available at
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10 // http://www.eclipse.org/legal/epl-v10.html
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11 //
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12 // The Apache License v2.0 is available at
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13 // http://www.opensource.org/licenses/apache2.0.php
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14 //
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15 // You may elect to redistribute this code under either of these licenses.
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16 // ========================================================================
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17 //
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18
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19 package org.eclipse.jetty.io;
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20
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21 /**
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22 * A View on another buffer. Allows operations that do not change the _content or
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23 * indexes of the backing buffer.
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24 *
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25 *
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26 *
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27 */
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28 public final class View extends AbstractBuffer
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29 {
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30 private Buffer _buffer;
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31
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32 /**
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33 * @param buffer The <code>Buffer</code> on which we are presenting a <code>View</code>.
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34 * @param mark The initial value of the {@link Buffer#markIndex mark index}
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35 * @param get The initial value of the {@link Buffer#getIndex get index}
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36 * @param put The initial value of the {@link Buffer#putIndex put index}
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37 * @param access The access level - one of the constants from {@link Buffer}.
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38 */
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39 public View(Buffer buffer, int mark, int get, int put,int access)
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40 {
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41 super(READWRITE);
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42 _buffer=buffer.buffer();
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43 setPutIndex(put);
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44 setGetIndex(get);
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45 setMarkIndex(mark);
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46 _access=access;
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47 }
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48
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49 public View()
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50 {
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51 super(READWRITE);
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52 }
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53
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54 /**
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55 * Update view to buffer
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56 */
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57 public void update(Buffer buffer)
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58 {
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59 _access = READWRITE;
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60 _buffer = buffer.buffer();
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61 setGetIndex(0);
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62 setPutIndex(buffer.putIndex());
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63 setGetIndex(buffer.getIndex());
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64 setMarkIndex(buffer.markIndex());
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65 _access = buffer.isReadOnly()?READONLY:READWRITE;
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66 }
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67
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68 @Override
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69 public byte[] array()
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70 {
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71 return _buffer.array();
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72 }
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73
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74 @Override
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75 public Buffer buffer()
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76 {
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77 return _buffer.buffer();
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78 }
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79
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80 @Override
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81 public int capacity()
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82 {
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83 return _buffer.capacity();
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84 }
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85
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86 @Override
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87 public void clear()
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88 {
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89 setMarkIndex(-1);
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90 setGetIndex(0);
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91 setPutIndex(_buffer.getIndex());
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92 setGetIndex(_buffer.getIndex());
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93 }
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94
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95 @Override
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96 public void compact()
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97 {
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98 // TODO
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99 }
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100
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101 /*
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102 * (non-Javadoc)
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103 *
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104 * @see java.lang.Object#equals(java.lang.Object)
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105 */
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106 @Override
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107 public boolean equals(Object obj)
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108 {
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109 return this==obj ||((obj instanceof Buffer)&& obj.equals(this)) || super.equals(obj);
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110 }
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111
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112 @Override
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113 public boolean isReadOnly()
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114 {
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115 return _buffer.isReadOnly();
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116 }
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117
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118 @Override
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119 public byte peek(int index)
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120 {
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121 return _buffer.peek(index);
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122 }
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123
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124 @Override
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125 public int peek(int index, byte[] b, int offset, int length)
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126 {
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127 return _buffer.peek(index,b,offset,length);
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128 }
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129
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130 @Override
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131 public int poke(int index, Buffer src)
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132 {
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133 return _buffer.poke(index,src);
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134 }
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135
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136 @Override
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137 public void poke(int index, byte b)
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138 {
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139 _buffer.poke(index,b);
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140 }
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141
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142 @Override
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143 public int poke(int index, byte[] b, int offset, int length)
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144 {
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145 return _buffer.poke(index,b,offset,length);
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146 }
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147
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148 @Override
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149 public String toString()
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150 {
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151 if (_buffer==null)
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152 return "INVALID";
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153 return super.toString();
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154 }
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155 }