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| <a href="_lower_case_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> Lucene.Net.Analysis.Tokenattributes;</div> |
| <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">namespace </span>Lucene.Net.Analysis</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>  </div> |
| <div class="line"><a name="l00024"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_lower_case_filter.html"> 24</a></span>  <span class="keyword">public</span> sealed <span class="keyword">class </span><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_lower_case_filter.html" title="Normalizes token text to lower case.">LowerCaseFilter</a>:<a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_token_filter.html" title="A TokenFilter is a TokenStream whose input is another TokenStream. This is an abstract class; subclas...">TokenFilter</a></div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  {</div> |
| <div class="line"><a name="l00026"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_lower_case_filter.html#ac8d7a6cb8320d2aa64a73ad650667493"> 26</a></span>  <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_lower_case_filter.html" title="Normalizes token text to lower case.">LowerCaseFilter</a>(<a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_token_stream.html" title="A TokenStream enumerates the sequence of tokens, either from Fields of a Document or from query text...">TokenStream</a> @in)</div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  : base(@in)</div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  {</div> |
| <div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  termAtt = AddAttribute<ITermAttribute>();</div> |
| <div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  }</div> |
| <div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  </div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keyword">private</span> readonly <a class="code" href="interface_lucene_1_1_net_1_1_analysis_1_1_tokenattributes_1_1_i_term_attribute.html" title="The term text of a Token.">ITermAttribute</a> termAtt;</div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  </div> |
| <div class="line"><a name="l00034"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_lower_case_filter.html#a8c345598fdeb9882440fd808b10480ad"> 34</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">bool</span> IncrementToken()</div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  {</div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keywordflow">if</span> (input.IncrementToken())</div> |
| <div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  {</div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  </div> |
| <div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keywordtype">char</span>[] buffer = termAtt.<a class="code" href="interface_lucene_1_1_net_1_1_analysis_1_1_tokenattributes_1_1_i_term_attribute.html#a1ed6aedff1a97a528106c529bbe0532d" title="Returns the internal termBuffer character array which you can then directly alter. If the array is too small for your token, use ResizeTermBuffer(int) to increase it. After altering the buffer be sure to call SetTermLength to record the number of valid characters that were placed into the termBuffer. ">TermBuffer</a>();</div> |
| <div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordtype">int</span> length = termAtt.TermLength();</div> |
| <div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < length; i++)</div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  buffer[i] = System.Char.ToLower(buffer[i]);</div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  </div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</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">return</span> <span class="keyword">false</span>;</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>  }</div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span> }</div> |
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