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annotate src/org/eclipse/jetty/io/View.java @ 1036:b87f97f6418a
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| author | Franklin Schmidt <fschmidt@gmail.com> |
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| date | Thu, 03 Nov 2016 21:42:41 -0600 |
| parents | eca26899c4bc |
| children | a7319f14ba1e |
| rev | line source |
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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 |
| 1005 | 32 /** |
| 33 * @param buffer The <code>Buffer</code> on which we are presenting a <code>View</code>. | |
| 34 * @param mark The initial value of the {@link Buffer#markIndex mark index} | |
| 35 * @param get The initial value of the {@link Buffer#getIndex get index} | |
| 36 * @param put The initial value of the {@link Buffer#putIndex put index} | |
| 37 * @param access The access level - one of the constants from {@link Buffer}. | |
| 38 */ | |
| 39 public View(Buffer buffer, int mark, int get, int put,int access) | |
| 40 { | |
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41 super(READWRITE); |
| 1005 | 42 _buffer=buffer.buffer(); |
| 43 setPutIndex(put); | |
| 44 setGetIndex(get); | |
| 45 setMarkIndex(mark); | |
| 46 _access=access; | |
| 47 } | |
| 48 | |
| 49 public View() | |
| 50 { | |
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51 super(READWRITE); |
| 1005 | 52 } |
| 53 | |
| 54 /** | |
| 55 * Update view to buffer | |
| 56 */ | |
| 57 public void update(Buffer buffer) | |
| 58 { | |
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59 _access = READWRITE; |
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60 _buffer = buffer.buffer(); |
| 1005 | 61 setGetIndex(0); |
| 62 setPutIndex(buffer.putIndex()); | |
| 63 setGetIndex(buffer.getIndex()); | |
| 64 setMarkIndex(buffer.markIndex()); | |
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65 _access = buffer.isReadOnly()?READONLY:READWRITE; |
| 1005 | 66 } |
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67 |
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68 @Override |
| 1005 | 69 public byte[] array() |
| 70 { | |
| 71 return _buffer.array(); | |
| 72 } | |
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73 |
| 1005 | 74 @Override |
| 75 public Buffer buffer() | |
| 76 { | |
| 77 return _buffer.buffer(); | |
| 78 } | |
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79 |
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80 @Override |
| 1005 | 81 public int capacity() |
| 82 { | |
| 83 return _buffer.capacity(); | |
| 84 } | |
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85 |
| 1005 | 86 @Override |
| 87 public void clear() | |
| 88 { | |
| 89 setMarkIndex(-1); | |
| 90 setGetIndex(0); | |
| 91 setPutIndex(_buffer.getIndex()); | |
| 92 setGetIndex(_buffer.getIndex()); | |
| 93 } | |
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94 |
| 1005 | 95 @Override |
| 96 public void compact() | |
| 97 { | |
| 98 // TODO | |
| 99 } | |
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100 |
| 1005 | 101 /* |
| 102 * (non-Javadoc) | |
| 103 * | |
| 104 * @see java.lang.Object#equals(java.lang.Object) | |
| 105 */ | |
| 106 @Override | |
| 107 public boolean equals(Object obj) | |
| 108 { | |
| 109 return this==obj ||((obj instanceof Buffer)&& obj.equals(this)) || super.equals(obj); | |
| 110 } | |
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111 |
| 1005 | 112 @Override |
| 113 public boolean isReadOnly() | |
| 114 { | |
| 115 return _buffer.isReadOnly(); | |
| 116 } | |
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117 |
| 1005 | 118 @Override |
| 119 public byte peek(int index) | |
| 120 { | |
| 121 return _buffer.peek(index); | |
| 122 } | |
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123 |
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124 @Override |
| 1005 | 125 public int peek(int index, byte[] b, int offset, int length) |
| 126 { | |
| 127 return _buffer.peek(index,b,offset,length); | |
| 128 } | |
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129 |
| 1005 | 130 @Override |
| 131 public int poke(int index, Buffer src) | |
| 132 { | |
| 133 return _buffer.poke(index,src); | |
| 134 } | |
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135 |
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136 @Override |
| 1005 | 137 public void poke(int index, byte b) |
| 138 { | |
| 139 _buffer.poke(index,b); | |
| 140 } | |
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141 |
| 1005 | 142 @Override |
| 143 public int poke(int index, byte[] b, int offset, int length) | |
| 144 { | |
| 145 return _buffer.poke(index,b,offset,length); | |
| 146 } | |
| 147 | |
| 148 @Override | |
| 149 public String toString() | |
| 150 { | |
| 151 if (_buffer==null) | |
| 152 return "INVALID"; | |
| 153 return super.toString(); | |
| 154 } | |
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155 } |