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| <div class="title">BaseCharFilter.cs</div> </div> |
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| <a href="_base_char_filter_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> <span class="comment">/* </span></div> |
| <div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <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> <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> <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> <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> <span class="comment"> * (the "License"); you may not use this file except in compliance with</span></div> |
| <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <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> <span class="comment"> * </span></div> |
| <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <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> <span class="comment"> * </span></div> |
| <div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <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> <span class="comment"> * distributed under the License is distributed on an "AS IS" BASIS,</span></div> |
| <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <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> <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> <span class="comment"> * limitations under the License.</span></div> |
| <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div> |
| <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">using</span> System;</div> |
| <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">using</span> Lucene.Net.Support;</div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">using</span> Lucene.Net.Util;</div> |
| <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div> |
| <div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">namespace </span>Lucene.Net.Analysis</div> |
| <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> {</div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div> |
| <div class="line"><a name="l00031"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_base_char_filter.html"> 31</a></span>  <span class="keyword">public</span> <span class="keyword">abstract</span> <span class="keyword">class </span><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_base_char_filter.html">BaseCharFilter</a> : <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_char_filter.html" title="Subclasses of CharFilter can be chained to filter CharStream. They can be used as System...">CharFilter</a></div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  {</div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keyword">private</span> <span class="keywordtype">int</span>[] offsets;</div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keyword">private</span> <span class="keywordtype">int</span>[] diffs;</div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keyword">private</span> <span class="keywordtype">int</span> size = 0;</div> |
| <div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div> |
| <div class="line"><a name="l00038"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_base_char_filter.html#afea05f46762da22f6e7caa0995d9827e"> 38</a></span>  <span class="keyword">protected</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_base_char_filter.html">BaseCharFilter</a>(<a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_char_stream.html" title="CharStream adds CorrectOffset functionality over System.IO.TextReader. All Tokenizers accept a CharSt...">CharStream</a> @in) : base(@in)</div> |
| <div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  {</div> |
| <div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  }</div> |
| <div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="comment">/* Retrieve the corrected offset. */</span></div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="comment">//@Override</span></div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keyword">override</span> <span class="keywordtype">int</span> Correct(<span class="keywordtype">int</span> currentOff)</div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  {</div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">if</span> (offsets == null || currentOff < offsets[0])</div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  {</div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordflow">return</span> currentOff;</div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  }</div> |
| <div class="line"><a name="l00050"></a><span class="lineno"> 50</span> </div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordtype">int</span> hi = size - 1;</div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">if</span> (currentOff >= offsets[hi])</div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordflow">return</span> currentOff + diffs[hi];</div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordtype">int</span> lo = 0;</div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordtype">int</span> mid = -1;</div> |
| <div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div> |
| <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordflow">while</span> (hi >= lo)</div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  {</div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  mid = <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>(lo + hi, 1);</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordflow">if</span> (currentOff < offsets[mid])</div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  hi = mid - 1;</div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (currentOff > offsets[mid])</div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  lo = mid + 1;</div> |
| <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">else</span></div> |
| <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">return</span> currentOff + diffs[mid];</div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  }</div> |
| <div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div> |
| <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">if</span> (currentOff < offsets[mid])</div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">return</span> mid == 0 ? currentOff : currentOff + diffs[mid - 1];</div> |
| <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordflow">return</span> currentOff + diffs[mid];</div> |
| <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  }</div> |
| <div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div> |
| <div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keyword">protected</span> <span class="keywordtype">int</span> LastCumulativeDiff</div> |
| <div class="line"><a name="l00075"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_base_char_filter.html#a6342200c7a6c2bdbf05e383f3006f175"> 75</a></span>  {</div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keyword">get</span></div> |
| <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  {</div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">return</span> offsets == null ? 0 : diffs[size - 1];</div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  }</div> |
| <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  }</div> |
| <div class="line"><a name="l00081"></a><span class="lineno"> 81</span> </div> |
| <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  [Obsolete(<span class="stringliteral">"Use LastCumulativeDiff property instead"</span>)]</div> |
| <div class="line"><a name="l00083"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_base_char_filter.html#aca9138da444f13867449fc39a63365dd"> 83</a></span>  <span class="keyword">protected</span> <span class="keywordtype">int</span> GetLastCumulativeDiff()</div> |
| <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  {</div> |
| <div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">return</span> LastCumulativeDiff;</div> |
| <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  }</div> |
| <div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div> |
| <div class="line"><a name="l00088"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_base_char_filter.html#a08320b1e3a2f037dcc7ba7d75973ebca"> 88</a></span>  <span class="keyword">protected</span> <span class="keywordtype">void</span> AddOffCorrectMap(<span class="keywordtype">int</span> off, <span class="keywordtype">int</span> cumulativeDiff)</div> |
| <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  {</div> |
| <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">if</span> (offsets == null)</div> |
| <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  {</div> |
| <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  offsets = <span class="keyword">new</span> <span class="keywordtype">int</span>[64];</div> |
| <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  diffs = <span class="keyword">new</span> <span class="keywordtype">int</span>[64];</div> |
| <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  }</div> |
| <div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (size == offsets.Length)</div> |
| <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  {</div> |
| <div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  offsets = <a class="code" href="class_lucene_1_1_net_1_1_util_1_1_array_util.html" title="Methods for manipulating arrays.">ArrayUtil</a>.<a class="code" href="class_lucene_1_1_net_1_1_util_1_1_array_util.html#aacb27c72ceac2461bd7f93ede0837cf5">Grow</a>(offsets);</div> |
| <div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  diffs = <a class="code" href="class_lucene_1_1_net_1_1_util_1_1_array_util.html" title="Methods for manipulating arrays.">ArrayUtil</a>.<a class="code" href="class_lucene_1_1_net_1_1_util_1_1_array_util.html#aacb27c72ceac2461bd7f93ede0837cf5">Grow</a>(diffs);</div> |
| <div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  }</div> |
| <div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div> |
| <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  offsets[size] = off;</div> |
| <div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  diffs[size++] = cumulativeDiff;</div> |
| <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  }</div> |
| <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  }</div> |
| <div class="line"><a name="l00105"></a><span class="lineno"> 105</span> }</div> |
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