Google Git
Sign in
apache / lucenenet-site / b7932cab2a602cd78b928b7dd2376969de9ab8e2 / . / docs / 3.0.3 / _indexable_binary_string_tools_8cs_source.html
blob: 53d242e784db238aeb0fb4a523d7ad49b60e1925 [file] [log] [blame]
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.3"/>
<title>Lucene.Net: core/Util/IndexableBinaryStringTools.cs Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/search.js"></script>
<script type="text/javascript">
$(document).ready(function() { searchBox.OnSelectItem(0); });
</script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td id="projectlogo"><img alt="Logo" src="lucene-net-icon-128x128.png"/></td>
<td style="padding-left: 0.5em;">
<div id="projectname">Lucene.Net
&#160;<span id="projectnumber">3.0.3</span>
</div>
<div id="projectbrief">Lucene.Net is a .NET port of the Java Lucene Indexing Library</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.3 -->
<script type="text/javascript">
var searchBox = new SearchBox("searchBox", "search",false,'Search');
</script>
<div id="navrow1" class="tabs">
<ul class="tablist">
<li><a href="Index.html"><span>Main&#160;Page</span></a></li>
<li><a href="namespaces.html"><span>Packages</span></a></li>
<li><a href="annotated.html"><span>Classes</span></a></li>
<li class="current"><a href="files.html"><span>Files</span></a></li>
<li>
<div id="MSearchBox" class="MSearchBoxInactive">
<span class="left">
<img id="MSearchSelect" src="search/mag_sel.png"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
alt=""/>
<input type="text" id="MSearchField" value="Search" accesskey="S"
onfocus="searchBox.OnSearchFieldFocus(true)"
onblur="searchBox.OnSearchFieldFocus(false)"
onkeyup="searchBox.OnSearchFieldChange(event)"/>
</span><span class="right">
<a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a>
</span>
</div>
</li>
</ul>
</div>
<div id="navrow2" class="tabs2">
<ul class="tablist">
<li><a href="files.html"><span>File&#160;List</span></a></li>
<li><a href="globals.html"><span>File&#160;Members</span></a></li>
</ul>
</div>
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
<a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark">&#160;</span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark">&#160;</span>Classes</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark">&#160;</span>Namespaces</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark">&#160;</span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark">&#160;</span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark">&#160;</span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark">&#160;</span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark">&#160;</span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><span class="SelectionMark">&#160;</span>Properties</a></div>
<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0"
name="MSearchResults" id="MSearchResults">
</iframe>
</div>
<div id="nav-path" class="navpath">
<ul>
<li class="navelem"><a class="el" href="dir_1efe588324fc547683bba4a3f1bac847.html">core</a></li><li class="navelem"><a class="el" href="dir_d1ecf42529ca901cc6a3edb20ba43b64.html">Util</a></li> </ul>
</div>
</div><!-- top -->
<div class="header">
<div class="headertitle">
<div class="title">IndexableBinaryStringTools.cs</div> </div>
</div><!--header-->
<div class="contents">
<a href="_indexable_binary_string_tools_8cs.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/* </span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> * contributor license agreements. See the NOTICE file distributed with</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> * this work for additional information regarding copyright ownership.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> * The ASF licenses this file to You under the Apache License, Version 2.0</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> * (the &quot;License&quot;); you may not use this file except in compliance with</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> * the License. You may obtain a copy of the License at</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> * </span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"> * </span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> * Unless required by applicable law or agreed to in writing, software</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> * distributed under the License is distributed on an &quot;AS IS&quot; BASIS,</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"> * See the License for the specific language governing permissions and</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"> * limitations under the License.</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="keyword">using</span> System;</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="keyword">using</span> Lucene.Net.Support;</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="comment">// {{Aroush-2.9}} Port issue? Both of those were treated as: System.IO.MemoryStream</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;<span class="comment">//using CharBuffer = java.nio.CharBuffer;</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="comment">//using ByteBuffer = java.nio.ByteBuffer;</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160;</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="keyword">namespace </span>Lucene.Net.Util</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160;{</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160; </div>
<div class="line"><a name="l00054"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_util_1_1_indexable_binary_string_tools.html"> 54</a></span>&#160; <span class="keyword">public</span> <span class="keyword">class </span><a class="code" href="class_lucene_1_1_net_1_1_util_1_1_indexable_binary_string_tools.html" title="Provides support for converting byte sequences to Strings and back again. The resulting Strings prese...">IndexableBinaryStringTools</a></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; {</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; </div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; <span class="keyword">private</span> <span class="keyword">static</span> readonly CodingCase[] CODING_CASES = <span class="keyword">new</span> CodingCase[]{<span class="keyword">new</span> CodingCase(7, 1), <span class="keyword">new</span> CodingCase(14, 6, 2), <span class="keyword">new</span> CodingCase(13, 5, 3), <span class="keyword">new</span> CodingCase(12, 4, 4), <span class="keyword">new</span> CodingCase(11, 3, 5), <span class="keyword">new</span> CodingCase(10, 2, 6), <span class="keyword">new</span> CodingCase(9, 1, 7), <span class="keyword">new</span> CodingCase(8, 0)};</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; </div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; <span class="comment">// Export only static methods</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; <span class="keyword">private</span> <a class="code" href="class_lucene_1_1_net_1_1_util_1_1_indexable_binary_string_tools.html" title="Provides support for converting byte sequences to Strings and back again. The resulting Strings prese...">IndexableBinaryStringTools</a>()</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; {</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; }</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; </div>
<div class="line"><a name="l00072"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_util_1_1_indexable_binary_string_tools.html#a1ca8f82400242e4fbcabcf73badcb228"> 72</a></span>&#160; <span class="keyword">public</span> <span class="keyword">static</span> <span class="keywordtype">int</span> GetEncodedLength(System.Collections.Generic.List&lt;byte&gt; original)</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; {</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; <span class="keywordflow">return</span> (original.Count == 0) ? 0 : ((original.Count * 8 + 14) / 15) + 1;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; }</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; </div>
<div class="line"><a name="l00085"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_util_1_1_indexable_binary_string_tools.html#a0b760cf2220de390a40f0eb79f1a43c7"> 85</a></span>&#160; <span class="keyword">public</span> <span class="keyword">static</span> <span class="keywordtype">int</span> GetDecodedLength(System.Collections.Generic.List&lt;<span class="keywordtype">char</span>&gt; encoded)</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; {</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160; <span class="keywordtype">int</span> numChars = encoded.Count - 1;</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160; <span class="keywordflow">if</span> (numChars &lt;= 0)</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160; {</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>&#160; <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; }</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; {</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; <span class="keywordtype">int</span> numFullBytesInFinalChar = encoded[encoded.Count - 1];</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; <span class="keywordtype">int</span> numEncodedChars = numChars - 1;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; <span class="keywordflow">return</span> ((numEncodedChars * 15 + 7) / 8 + numFullBytesInFinalChar);</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160; }</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160; }</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>&#160; </div>
<div class="line"><a name="l00113"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_util_1_1_indexable_binary_string_tools.html#a91f1d40145de7e09f63525f4b6299389"> 113</a></span>&#160; <span class="keyword">public</span> <span class="keyword">static</span> <span class="keywordtype">void</span> Encode(System.Collections.Generic.List&lt;byte&gt; input, System.Collections.Generic.List&lt;<span class="keywordtype">char</span>&gt; output)</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160; {</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>&#160; <span class="keywordtype">int</span> outputLength = GetEncodedLength(input);</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; <span class="comment">// only adjust capacity if needed</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; <span class="keywordflow">if</span> (output.Capacity &lt; outputLength)</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160; {</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160; output.Capacity = outputLength;</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>&#160; }</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160;</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; <span class="comment">// ensure the buffer we are writing into is occupied with nulls</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160; <span class="keywordflow">if</span> (output.Count &lt; outputLength)</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; {</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = output.Count; i &lt; outputLength; i++)</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160; {</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>&#160; output.Add(Char.MinValue);</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; }</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; }</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160; <span class="keywordflow">if</span> (input.Count &gt; 0)</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>&#160; {</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; <span class="keywordtype">int</span> inputByteNum = 0;</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; <span class="keywordtype">int</span> caseNum = 0;</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160; <span class="keywordtype">int</span> outputCharNum = 0;</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160; CodingCase codingCase;</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>&#160; <span class="keywordflow">for</span> (; inputByteNum + CODING_CASES[caseNum].numBytes &lt;= input.Count; ++outputCharNum)</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; {</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; codingCase = CODING_CASES[caseNum];</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160; <span class="keywordflow">if</span> (2 == codingCase.numBytes)</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160; {</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160; output[outputCharNum] = (char)(((input[inputByteNum] &amp; 0xFF) &lt;&lt; codingCase.initialShift) + ((<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html" title="A simple class for number conversions. ">Number</a>.<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html#aafe44e2acf7feacad6abd2a425730644" title="Performs an unsigned bitwise right shift with the specified number ">URShift</a>((input[inputByteNum + 1] &amp; 0xFF), codingCase.finalShift)) &amp; codingCase.finalMask) &amp; (short)0x7FFF);</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; }</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; {</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160; <span class="comment">// numBytes is 3</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; output[outputCharNum] = (char)(((input[inputByteNum] &amp; 0xFF) &lt;&lt; codingCase.initialShift) + ((input[inputByteNum + 1] &amp; 0xFF) &lt;&lt; codingCase.middleShift) + ((<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html" title="A simple class for number conversions. ">Number</a>.<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html#aafe44e2acf7feacad6abd2a425730644" title="Performs an unsigned bitwise right shift with the specified number ">URShift</a>((input[inputByteNum + 2] &amp; 0xFF), codingCase.finalShift)) &amp; codingCase.finalMask) &amp; (short)0x7FFF);</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; }</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; inputByteNum += codingCase.advanceBytes;</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; <span class="keywordflow">if</span> (++caseNum == CODING_CASES.Length)</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160; {</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; caseNum = 0;</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160; }</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; }</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; <span class="comment">// Produce final char (if any) and trailing count chars.</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; codingCase = CODING_CASES[caseNum];</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; </div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; <span class="keywordflow">if</span> (inputByteNum + 1 &lt; input.Count)</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160; {</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; <span class="comment">// codingCase.numBytes must be 3</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; output[outputCharNum++] = (char) ((((input[inputByteNum] &amp; 0xFF) &lt;&lt; codingCase.initialShift) + ((input[inputByteNum + 1] &amp; 0xFF) &lt;&lt; codingCase.middleShift)) &amp; (short) 0x7FFF);</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160; <span class="comment">// Add trailing char containing the number of full bytes in final char</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; output[outputCharNum++] = (char) 1;</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160; }</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160; <span class="keywordflow">else</span> <span class="keywordflow">if</span> (inputByteNum &lt; input.Count)</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>&#160; {</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160; output[outputCharNum++] = (char) (((input[inputByteNum] &amp; 0xFF) &lt;&lt; codingCase.initialShift) &amp; (<span class="keywordtype">short</span>) 0x7FFF);</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160; <span class="comment">// Add trailing char containing the number of full bytes in final char</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160; output[outputCharNum++] = caseNum == 0?(char) 1:(<span class="keywordtype">char</span>) 0;</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; }</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; {</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; <span class="comment">// No left over bits - last char is completely filled.</span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160; <span class="comment">// Add trailing char containing the number of full bytes in final char</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; output[outputCharNum++] = (char) 1;</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; }</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; }</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160; }</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; </div>
<div class="line"><a name="l00193"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_util_1_1_indexable_binary_string_tools.html#a86371509120e353bf37a074a80b3e79a"> 193</a></span>&#160; <span class="keyword">public</span> <span class="keyword">static</span> <span class="keywordtype">void</span> Decode(System.Collections.Generic.List&lt;<span class="keywordtype">char</span>&gt; input, System.Collections.Generic.List&lt;byte&gt; output)</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; {</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160; <span class="keywordtype">int</span> numOutputBytes = GetDecodedLength(input);</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160; <span class="keywordflow">if</span> (output.Capacity &lt; numOutputBytes)</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160; {</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160; output.Capacity = numOutputBytes;</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160; }</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160;</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; <span class="comment">// ensure the buffer we are writing into is occupied with nulls</span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160; <span class="keywordflow">if</span> (output.Count &lt; numOutputBytes)</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; {</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = output.Count; i &lt; numOutputBytes; i++)</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; {</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; output.Add(Byte.MinValue);</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160; }</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160; }</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160;</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; <span class="keywordflow">if</span> (input.Count &gt; 0)</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160; {</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160; <span class="keywordtype">int</span> caseNum = 0;</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160; <span class="keywordtype">int</span> outputByteNum = 0;</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160; <span class="keywordtype">int</span> inputCharNum = 0;</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160; <span class="keywordtype">short</span> inputChar;</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; CodingCase codingCase;</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; <span class="keywordflow">for</span> (; inputCharNum &lt; input.Count - 2; ++inputCharNum)</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160; {</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160; codingCase = CODING_CASES[caseNum];</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160; inputChar = (short) input[inputCharNum];</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160; <span class="keywordflow">if</span> (2 == codingCase.numBytes)</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>&#160; {</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>&#160; <span class="keywordflow">if</span> (0 == caseNum)</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>&#160; {</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>&#160; output[outputByteNum] = (byte) (<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html" title="A simple class for number conversions. ">Number</a>.<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html#aafe44e2acf7feacad6abd2a425730644" title="Performs an unsigned bitwise right shift with the specified number ">URShift</a>(inputChar, codingCase.initialShift));</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>&#160; }</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>&#160; {</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>&#160; output[outputByteNum] = (byte) (output[outputByteNum] + (byte) (<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html" title="A simple class for number conversions. ">Number</a>.<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html#aafe44e2acf7feacad6abd2a425730644" title="Performs an unsigned bitwise right shift with the specified number ">URShift</a>(inputChar, codingCase.initialShift)));</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>&#160; }</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>&#160; output[outputByteNum + 1] = (byte) ((inputChar &amp; codingCase.finalMask) &lt;&lt; codingCase.finalShift);</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>&#160; }</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>&#160; {</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>&#160; <span class="comment">// numBytes is 3</span></div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>&#160; output[outputByteNum] = (byte) (output[outputByteNum] + (byte) (<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html" title="A simple class for number conversions. ">Number</a>.<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html#aafe44e2acf7feacad6abd2a425730644" title="Performs an unsigned bitwise right shift with the specified number ">URShift</a>(inputChar, codingCase.initialShift)));</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>&#160; output[outputByteNum + 1] = (byte) (<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html" title="A simple class for number conversions. ">Number</a>.<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html#aafe44e2acf7feacad6abd2a425730644" title="Performs an unsigned bitwise right shift with the specified number ">URShift</a>((inputChar &amp; codingCase.middleMask), codingCase.middleShift));</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>&#160; output[outputByteNum + 2] = (byte) ((inputChar &amp; codingCase.finalMask) &lt;&lt; codingCase.finalShift);</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>&#160; }</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>&#160; outputByteNum += codingCase.advanceBytes;</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>&#160; <span class="keywordflow">if</span> (++caseNum == CODING_CASES.Length)</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>&#160; {</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>&#160; caseNum = 0;</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>&#160; }</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>&#160; }</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>&#160; <span class="comment">// Handle final char</span></div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>&#160; inputChar = (short) input[inputCharNum];</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>&#160; codingCase = CODING_CASES[caseNum];</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>&#160; <span class="keywordflow">if</span> (0 == caseNum)</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>&#160; {</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>&#160; output[outputByteNum] = 0;</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>&#160; }</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>&#160; output[outputByteNum] = (byte) (output[outputByteNum] + (byte) (<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html" title="A simple class for number conversions. ">Number</a>.<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html#aafe44e2acf7feacad6abd2a425730644" title="Performs an unsigned bitwise right shift with the specified number ">URShift</a>(inputChar, codingCase.initialShift)));</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>&#160; <span class="keywordtype">long</span> bytesLeft = numOutputBytes - outputByteNum;</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>&#160; <span class="keywordflow">if</span> (bytesLeft &gt; 1)</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>&#160; {</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>&#160; <span class="keywordflow">if</span> (2 == codingCase.numBytes)</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>&#160; {</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>&#160; output[outputByteNum + 1] = (byte) (<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html" title="A simple class for number conversions. ">Number</a>.<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html#aafe44e2acf7feacad6abd2a425730644" title="Performs an unsigned bitwise right shift with the specified number ">URShift</a>((inputChar &amp; codingCase.finalMask), codingCase.finalShift));</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>&#160; }</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>&#160; <span class="keywordflow">else</span></div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>&#160; {</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>&#160; <span class="comment">// numBytes is 3</span></div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>&#160; output[outputByteNum + 1] = (byte) (<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html" title="A simple class for number conversions. ">Number</a>.<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html#aafe44e2acf7feacad6abd2a425730644" title="Performs an unsigned bitwise right shift with the specified number ">URShift</a>((inputChar &amp; codingCase.middleMask), codingCase.middleShift));</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>&#160; <span class="keywordflow">if</span> (bytesLeft &gt; 2)</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>&#160; {</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>&#160; output[outputByteNum + 2] = (byte) ((inputChar &amp; codingCase.finalMask) &lt;&lt; codingCase.finalShift);</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>&#160; }</div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>&#160; }</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>&#160; }</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>&#160; }</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>&#160; }</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>&#160; </div>
<div class="line"><a name="l00287"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_util_1_1_indexable_binary_string_tools.html#a3d604b6d4a36f1eeaab032d834163843"> 287</a></span>&#160; <span class="keyword">public</span> <span class="keyword">static</span> System.Collections.Generic.List&lt;byte&gt; Decode(System.Collections.Generic.List&lt;<span class="keywordtype">char</span>&gt; input)</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>&#160; {</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>&#160; System.Collections.Generic.List&lt;byte&gt; output = </div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>&#160; <span class="keyword">new</span> System.Collections.Generic.List&lt;byte&gt;(<span class="keyword">new</span> byte[GetDecodedLength(input)]);</div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>&#160; Decode(input, output);</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>&#160; <span class="keywordflow">return</span> output;</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>&#160; }</div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>&#160; </div>
<div class="line"><a name="l00306"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_util_1_1_indexable_binary_string_tools.html#aa9238cabfcfc9d3b3a92908e45c267a4"> 306</a></span>&#160; <span class="keyword">public</span> <span class="keyword">static</span> System.Collections.Generic.List&lt;<span class="keywordtype">char</span>&gt; Encode(System.Collections.Generic.List&lt;byte&gt; input)</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>&#160; {</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>&#160; System.Collections.Generic.List&lt;<span class="keywordtype">char</span>&gt; output = </div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>&#160; <span class="keyword">new</span> System.Collections.Generic.List&lt;<span class="keywordtype">char</span>&gt;(<span class="keyword">new</span> <span class="keywordtype">char</span>[GetEncodedLength(input)]);</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>&#160; Encode(input, output);</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>&#160; <span class="keywordflow">return</span> output;</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>&#160; }</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>&#160; </div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>&#160; <span class="keyword">internal</span> <span class="keyword">class </span>CodingCase</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>&#160; {</div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>&#160; <span class="keyword">internal</span> <span class="keywordtype">int</span> numBytes, initialShift, middleShift, finalShift, advanceBytes = 2;</div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>&#160; <span class="keyword">internal</span> <span class="keywordtype">short</span> middleMask, finalMask;</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>&#160; </div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>&#160; <span class="keyword">internal</span> CodingCase(<span class="keywordtype">int</span> initialShift, <span class="keywordtype">int</span> middleShift, <span class="keywordtype">int</span> finalShift)</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>&#160; {</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>&#160; this.numBytes = 3;</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>&#160; this.initialShift = initialShift;</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>&#160; this.middleShift = middleShift;</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>&#160; this.finalShift = finalShift;</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>&#160; this.finalMask = (short) (<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html" title="A simple class for number conversions. ">Number</a>.<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html#aafe44e2acf7feacad6abd2a425730644" title="Performs an unsigned bitwise right shift with the specified number ">URShift</a>((<span class="keywordtype">short</span>) 0xFF, finalShift));</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>&#160; this.middleMask = (short) ((<span class="keywordtype">short</span>) 0xFF &lt;&lt; middleShift);</div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>&#160; }</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>&#160; </div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>&#160; <span class="keyword">internal</span> CodingCase(<span class="keywordtype">int</span> initialShift, <span class="keywordtype">int</span> finalShift)</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>&#160; {</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>&#160; this.numBytes = 2;</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>&#160; this.initialShift = initialShift;</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>&#160; this.finalShift = finalShift;</div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>&#160; this.finalMask = (short) (<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html" title="A simple class for number conversions. ">Number</a>.<a class="code" href="class_lucene_1_1_net_1_1_support_1_1_number.html#aafe44e2acf7feacad6abd2a425730644" title="Performs an unsigned bitwise right shift with the specified number ">URShift</a>((<span class="keywordtype">short</span>) 0xFF, finalShift));</div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>&#160; <span class="keywordflow">if</span> (finalShift != 0)</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>&#160; {</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>&#160; advanceBytes = 1;</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>&#160; }</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>&#160; }</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>&#160; }</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>&#160; }</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>&#160;}</div>
</div><!-- fragment --></div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated on Thu Jan 3 2013 02:12:46 for Lucene.Net by &#160;<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.3
</small></address>
</body>
</html>