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| <div class="title">PersianNormalizer.cs</div> </div> |
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| <a href="_persian_normalizer_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"> *</span></div> |
| <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * Licensed to the Apache Software Foundation (ASF) under one</span></div> |
| <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * or more contributor license agreements. See the NOTICE file</span></div> |
| <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * distributed with this work for additional information</span></div> |
| <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * regarding copyright ownership. The ASF licenses this file</span></div> |
| <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * to you under the Apache License, Version 2.0 (the</span></div> |
| <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * "License"); you may not use this file except in compliance</span></div> |
| <div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * with the License. You may obtain a copy of the License at</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"> * http://www.apache.org/licenses/LICENSE-2.0</span></div> |
| <div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * Unless required by applicable law or agreed to in writing,</span></div> |
| <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * software distributed under the License is distributed on an</span></div> |
| <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span></div> |
| <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * KIND, either express or implied. See the License for the</span></div> |
| <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * specific language governing permissions and limitations</span></div> |
| <div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * under the License.</span></div> |
| <div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">*/</span></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">using</span> System;</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> <span class="keyword">namespace </span>Lucene.Net.Analysis.Fa</div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> {</div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment">/*</span></div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * Normalizer for Persian.</span></div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> * <p></span></div> |
| <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> * Normalization is done in-place for efficiency, operating on a termbuffer.</span></div> |
| <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> * <p></span></div> |
| <div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> * Normalization is defined as:</span></div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> * <ul></span></div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> * <li>Normalization of various heh + hamza forms and heh goal to heh.</span></div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> * <li>Normalization of farsi yeh and yeh barree to arabic yeh</span></div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> * <li>Normalization of persian keheh to arabic kaf</span></div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> * </ul></span></div> |
| <div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> * </span></div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00039"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_normalizer.html"> 39</a></span> <span class="keyword">public</span> <span class="keyword">class </span><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_normalizer.html">PersianNormalizer</a> {</div> |
| <div class="line"><a name="l00040"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_normalizer.html#aecc5450505d9f3f42eb7ddaae32350a9"> 40</a></span>  <span class="keyword">public</span> <span class="keyword">const</span> <span class="keywordtype">char</span> YEH = <span class="stringliteral">'\u064A'</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"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_normalizer.html#ad34ee552a2440ff4113417862fc7dbf2"> 42</a></span>  <span class="keyword">public</span> <span class="keyword">const</span> <span class="keywordtype">char</span> FARSI_YEH = <span class="stringliteral">'\u06CC'</span>;</div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div> |
| <div class="line"><a name="l00044"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_normalizer.html#a7f53f15f45d641de617f8282d6b6c3a5"> 44</a></span>  <span class="keyword">public</span> <span class="keyword">const</span> <span class="keywordtype">char</span> YEH_BARREE = <span class="stringliteral">'\u06D2'</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"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_normalizer.html#a6f88296d573f2eae8367d1e417935683"> 46</a></span>  <span class="keyword">public</span> <span class="keyword">const</span> <span class="keywordtype">char</span> KEHEH = <span class="stringliteral">'\u06A9'</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"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_normalizer.html#a8de867e616a9609d6b5f2ad2ac78446d"> 48</a></span>  <span class="keyword">public</span> <span class="keyword">const</span> <span class="keywordtype">char</span> KAF = <span class="stringliteral">'\u0643'</span>;</div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div> |
| <div class="line"><a name="l00050"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_normalizer.html#a8224e9dc46ec7a52ac75f65c550b55b5"> 50</a></span>  <span class="keyword">public</span> <span class="keyword">const</span> <span class="keywordtype">char</span> HAMZA_ABOVE = <span class="stringliteral">'\u0654'</span>;</div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span> </div> |
| <div class="line"><a name="l00052"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_normalizer.html#a96d009fa19c58071bf1ec2995ce1d112"> 52</a></span>  <span class="keyword">public</span> <span class="keyword">const</span> <span class="keywordtype">char</span> HEH_YEH = <span class="stringliteral">'\u06C0'</span>;</div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div> |
| <div class="line"><a name="l00054"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_normalizer.html#adfa55c6fc887c585a692e49698d9f042"> 54</a></span>  <span class="keyword">public</span> <span class="keyword">const</span> <span class="keywordtype">char</span> HEH_GOAL = <span class="stringliteral">'\u06C1'</span>;</div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div> |
| <div class="line"><a name="l00056"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_normalizer.html#acf33949f73fcb51847015760dd30b3ec"> 56</a></span>  <span class="keyword">public</span> <span class="keyword">const</span> <span class="keywordtype">char</span> HEH = <span class="stringliteral">'\u0647'</span>;</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="comment">/*</span></div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment"> * Normalize an input buffer of Persian text</span></div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"> * </span></div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"> * @param s input buffer</span></div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment"> * @param len length of input buffer</span></div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment"> * @return length of input buffer after normalization</span></div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00065"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_normalizer.html#a66b2efd6036f7d902b262d3d7e150b64"> 65</a></span>  <span class="keyword">public</span> <span class="keywordtype">int</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_normalizer.html#a66b2efd6036f7d902b262d3d7e150b64">Normalize</a>(<span class="keywordtype">char</span>[] s, <span class="keywordtype">int</span> len) {</div> |
| <div class="line"><a name="l00066"></a><span class="lineno"> 66</span> </div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < len; i++) {</div> |
| <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">switch</span> (s[i]) {</div> |
| <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">case</span> FARSI_YEH:</div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">case</span> YEH_BARREE:</div> |
| <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  s[i] = YEH;</div> |
| <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">case</span> KEHEH:</div> |
| <div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  s[i] = KAF;</div> |
| <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">case</span> HEH_YEH:</div> |
| <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordflow">case</span> HEH_GOAL:</div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  s[i] = HEH;</div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">case</span> HAMZA_ABOVE: <span class="comment">// necessary for HEH + HAMZA</span></div> |
| <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  len = Delete(s, i, len);</div> |
| <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  i--;</div> |
| <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">default</span>:</div> |
| <div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">break</span>;</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"> 88</span> </div> |
| <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">return</span> len;</div> |
| <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  }</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>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment"> * Delete a character in-place</span></div> |
| <div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment"> * </span></div> |
| <div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment"> * @param s Input Buffer</span></div> |
| <div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment"> * @param pos Position of character to delete</span></div> |
| <div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"> * @param len length of input buffer</span></div> |
| <div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment"> * @return length of input buffer after deletion</span></div> |
| <div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00100"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_normalizer.html#a0aac69930f140a2b2ef5cd9f6d0de72b"> 100</a></span>  <span class="keyword">protected</span> <span class="keywordtype">int</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_fa_1_1_persian_normalizer.html#a0aac69930f140a2b2ef5cd9f6d0de72b">Delete</a>(<span class="keywordtype">char</span>[] s, <span class="keywordtype">int</span> pos, <span class="keywordtype">int</span> len) {</div> |
| <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">if</span> (pos < len)</div> |
| <div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  Array.Copy(s, pos + 1, s, pos, len - pos - 1);</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>  <span class="keywordflow">return</span> len - 1;</div> |
| <div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  }</div> |
| <div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div> |
| <div class="line"><a name="l00107"></a><span class="lineno"> 107</span> }</div> |
| <div class="line"><a name="l00108"></a><span class="lineno"> 108</span> }</div> |
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