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| <a href="_analyzers_2_nl_2_dutch_stemmer_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> <span class="keyword">using</span> System.IO;</div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">using</span> System.Text;</div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">using</span> System.Collections;</div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">using</span> System.Collections.Generic;</div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keyword">namespace </span>Lucene.Net.Analysis.Nl</div> |
| <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> {</div> |
| <div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> * A stemmer for Dutch words. </span></div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> * <p></span></div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> * The algorithm is an implementation of</span></div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> * the <a href="http://snowball.tartarus.org/algorithms/dutch/stemmer.html">dutch stemming</a></span></div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> * algorithm in Martin Porter's snowball project.</span></div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> * </p></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> </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_nl_1_1_dutch_stemmer.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_nl_1_1_dutch_stemmer.html">DutchStemmer</a></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>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> * Buffer for the terms while stemming them.</span></div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keyword">private</span> StringBuilder sb = <span class="keyword">new</span> StringBuilder();</div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keyword">private</span> <span class="keywordtype">bool</span> _removedE;</div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keyword">private</span> IDictionary<string, string> _stemDict;</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="keyword">private</span> <span class="keywordtype">int</span> _R1;</div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keyword">private</span> <span class="keywordtype">int</span> _R2;</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="comment">//TODO convert to internal</span></div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"> * Stems the given term to an unique <tt>discriminator</tt>.</span></div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"> * @param term The term that should be stemmed.</span></div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"> * @return Discriminator for <tt>term</tt></span></div> |
| <div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00058"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_nl_1_1_dutch_stemmer.html#acd4ecd598bbf5a5d3a107bfc572582c9"> 58</a></span>  <span class="keyword">public</span> String Stem(String term)</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>  term = term.ToLower();</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordflow">if</span> (!isStemmable(term))</div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordflow">return</span> term;</div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">if</span> (_stemDict != null && _stemDict.ContainsKey(term))</div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">if</span> (_stemDict[term] is String)</div> |
| <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">return</span> (String)_stemDict[term];</div> |
| <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">else</span></div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">return</span> null;</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="comment">// Reset the StringBuilder.</span></div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  sb.Length = 0;</div> |
| <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  sb.Insert(0, term);</div> |
| <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="comment">// Stemming starts here...</span></div> |
| <div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  substitute(sb);</div> |
| <div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  storeYandI(sb);</div> |
| <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  _R1 = getRIndex(sb, 0);</div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  _R1 = Math.Max(3, _R1);</div> |
| <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  step1(sb);</div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  step2(sb);</div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  _R2 = getRIndex(sb, _R1);</div> |
| <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  step3a(sb);</div> |
| <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  step3b(sb);</div> |
| <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  step4(sb);</div> |
| <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  reStoreYandI(sb);</div> |
| <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">return</span> sb.ToString();</div> |
| <div class="line"><a name="l00085"></a><span class="lineno"> 85</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>  <span class="keyword">private</span> <span class="keywordtype">bool</span> enEnding(StringBuilder sb)</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>  String[] enend = <span class="keyword">new</span> String[] { <span class="stringliteral">"ene"</span>, <span class="stringliteral">"en"</span> };</div> |
| <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < enend.Length; i++)</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>  String end = enend[i];</div> |
| <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  String s = sb.ToString();</div> |
| <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordtype">int</span> index = s.Length - end.Length;</div> |
| <div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">if</span> (s.EndsWith(end) &&</div> |
| <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  index >= _R1 &&</div> |
| <div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  isValidEnEnding(sb, index - 1)</div> |
| <div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  )</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>  sb.Remove(index, end.Length);</div> |
| <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  unDouble(sb, index);</div> |
| <div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</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>  <span class="keywordflow">return</span> <span class="keyword">false</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> |
| <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keyword">private</span> <span class="keywordtype">void</span> step1(StringBuilder sb)</div> |
| <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  {</div> |
| <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">if</span> (_R1 >= sb.Length)</div> |
| <div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordflow">return</span>;</div> |
| <div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div> |
| <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  String s = sb.ToString();</div> |
| <div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordtype">int</span> LengthR1 = sb.Length - _R1;</div> |
| <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordtype">int</span> index;</div> |
| <div class="line"><a name="l00117"></a><span class="lineno"> 117</span> </div> |
| <div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">if</span> (s.EndsWith(<span class="stringliteral">"heden"</span>))</div> |
| <div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  {</div> |
| <div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  var toReplace = sb.ToString(_R1, LengthR1).Replace(<span class="stringliteral">"heden"</span>, <span class="stringliteral">"heid"</span>);</div> |
| <div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  sb.Remove(_R1, LengthR1);</div> |
| <div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  sb.Insert(_R1, toReplace);</div> |
| <div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keywordflow">return</span>;</div> |
| <div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  }</div> |
| <div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div> |
| <div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">if</span> (enEnding(sb))</div> |
| <div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordflow">return</span>;</div> |
| <div class="line"><a name="l00128"></a><span class="lineno"> 128</span> </div> |
| <div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordflow">if</span> (s.EndsWith(<span class="stringliteral">"se"</span>) &&</div> |
| <div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  (index = s.Length - 2) >= _R1 &&</div> |
| <div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  isValidSEnding(sb, index - 1)</div> |
| <div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  )</div> |
| <div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  {</div> |
| <div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  sb.Remove(index, 2);</div> |
| <div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordflow">return</span>;</div> |
| <div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  }</div> |
| <div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordflow">if</span> (s.EndsWith(<span class="stringliteral">"s"</span>) &&</div> |
| <div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  (index = s.Length - 1) >= _R1 &&</div> |
| <div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  isValidSEnding(sb, index - 1))</div> |
| <div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  {</div> |
| <div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  sb.Remove(index, 1);</div> |
| <div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  }</div> |
| <div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  }</div> |
| <div class="line"><a name="l00144"></a><span class="lineno"> 144</span> </div> |
| <div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="comment"> * Remove suffix e if in R1 and</span></div> |
| <div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="comment"> * preceded by a non-vowel, and then undouble the ending</span></div> |
| <div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00149"></a><span class="lineno"> 149</span> <span class="comment"> * @param sb String being stemmed</span></div> |
| <div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keyword">private</span> <span class="keywordtype">void</span> step2(StringBuilder sb)</div> |
| <div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  {</div> |
| <div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  _removedE = <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">if</span> (_R1 >= sb.Length)</div> |
| <div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordflow">return</span>;</div> |
| <div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  String s = sb.ToString();</div> |
| <div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordtype">int</span> index = s.Length - 1;</div> |
| <div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">if</span> (index >= _R1 &&</div> |
| <div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  s.EndsWith(<span class="stringliteral">"e"</span>) &&</div> |
| <div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  !isVowel(sb[index - 1]))</div> |
| <div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  {</div> |
| <div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  sb.Remove(index, 1);</div> |
| <div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  unDouble(sb);</div> |
| <div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  _removedE = <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  }</div> |
| <div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  }</div> |
| <div class="line"><a name="l00167"></a><span class="lineno"> 167</span> </div> |
| <div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="comment"> * Remove "heid"</span></div> |
| <div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="comment"> * @param sb String being stemmed</span></div> |
| <div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keyword">private</span> <span class="keywordtype">void</span> step3a(StringBuilder sb)</div> |
| <div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  {</div> |
| <div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">if</span> (_R2 >= sb.Length)</div> |
| <div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keywordflow">return</span>;</div> |
| <div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  String s = sb.ToString();</div> |
| <div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keywordtype">int</span> index = s.Length - 4;</div> |
| <div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keywordflow">if</span> (s.EndsWith(<span class="stringliteral">"heid"</span>) && index >= _R2 && sb[index - 1] != <span class="charliteral">'c'</span>)</div> |
| <div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  {</div> |
| <div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  sb.Remove(index, 4); <span class="comment">//remove heid</span></div> |
| <div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  enEnding(sb);</div> |
| <div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  }</div> |
| <div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  }</div> |
| <div class="line"><a name="l00185"></a><span class="lineno"> 185</span> </div> |
| <div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="comment"> * <p>A d-suffix, or derivational suffix, enables a new word,</span></div> |
| <div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="comment"> * often with a different grammatical category, or with a different</span></div> |
| <div class="line"><a name="l00189"></a><span class="lineno"> 189</span> <span class="comment"> * sense, to be built from another word. Whether a d-suffix can be</span></div> |
| <div class="line"><a name="l00190"></a><span class="lineno"> 190</span> <span class="comment"> * attached is discovered not from the rules of grammar, but by</span></div> |
| <div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="comment"> * referring to a dictionary. So in English, ness can be added to</span></div> |
| <div class="line"><a name="l00192"></a><span class="lineno"> 192</span> <span class="comment"> * certain adjectives to form corresponding nouns (littleness,</span></div> |
| <div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="comment"> * kindness, foolishness ...) but not to all adjectives</span></div> |
| <div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="comment"> * (not for example, to big, cruel, wise ...) d-suffixes can be</span></div> |
| <div class="line"><a name="l00195"></a><span class="lineno"> 195</span> <span class="comment"> * used to change meaning, often in rather exotic ways.</p></span></div> |
| <div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="comment"> * Remove "ing", "end", "ig", "lijk", "baar" and "bar"</span></div> |
| <div class="line"><a name="l00197"></a><span class="lineno"> 197</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="comment"> * @param sb String being stemmed</span></div> |
| <div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keyword">private</span> <span class="keywordtype">void</span> step3b(StringBuilder sb)</div> |
| <div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  {</div> |
| <div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keywordflow">if</span> (_R2 >= sb.Length)</div> |
| <div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keywordflow">return</span>;</div> |
| <div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  String s = sb.ToString();</div> |
| <div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordtype">int</span> index = 0;</div> |
| <div class="line"><a name="l00206"></a><span class="lineno"> 206</span> </div> |
| <div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keywordflow">if</span> ((s.EndsWith(<span class="stringliteral">"end"</span>) || s.EndsWith(<span class="stringliteral">"ing"</span>)) &&</div> |
| <div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  (index = s.Length - 3) >= _R2)</div> |
| <div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  {</div> |
| <div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  sb.Remove(index, 3);</div> |
| <div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">if</span> (sb[index - 2] == <span class="charliteral">'i'</span> &&</div> |
| <div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  sb[index - 1] == <span class="charliteral">'g'</span>)</div> |
| <div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  {</div> |
| <div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keywordflow">if</span> (sb[index - 3] != <span class="charliteral">'e'</span> & index - 2 >= _R2)</div> |
| <div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  {</div> |
| <div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  index -= 2;</div> |
| <div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  sb.Remove(index, 2);</div> |
| <div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  }</div> |
| <div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  }</div> |
| <div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordflow">else</span></div> |
| <div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  {</div> |
| <div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  unDouble(sb, index);</div> |
| <div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  }</div> |
| <div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordflow">return</span>;</div> |
| <div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  }</div> |
| <div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordflow">if</span> (s.EndsWith(<span class="stringliteral">"ig"</span>) &&</div> |
| <div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  (index = s.Length - 2) >= _R2</div> |
| <div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  )</div> |
| <div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  {</div> |
| <div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="keywordflow">if</span> (sb[index - 1] != <span class="charliteral">'e'</span>)</div> |
| <div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  sb.Remove(index, 2);</div> |
| <div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keywordflow">return</span>;</div> |
| <div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  }</div> |
| <div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keywordflow">if</span> (s.EndsWith(<span class="stringliteral">"lijk"</span>) &&</div> |
| <div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  (index = s.Length - 4) >= _R2</div> |
| <div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  )</div> |
| <div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  {</div> |
| <div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  sb.Remove(index, 4);</div> |
| <div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  step2(sb);</div> |
| <div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="keywordflow">return</span>;</div> |
| <div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  }</div> |
| <div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordflow">if</span> (s.EndsWith(<span class="stringliteral">"baar"</span>) &&</div> |
| <div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  (index = s.Length - 4) >= _R2</div> |
| <div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  )</div> |
| <div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  {</div> |
| <div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  sb.Remove(index, 4);</div> |
| <div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keywordflow">return</span>;</div> |
| <div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  }</div> |
| <div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="keywordflow">if</span> (s.EndsWith(<span class="stringliteral">"bar"</span>) &&</div> |
| <div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  (index = s.Length - 3) >= _R2</div> |
| <div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  )</div> |
| <div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  {</div> |
| <div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keywordflow">if</span> (_removedE)</div> |
| <div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  sb.Remove(index, 3);</div> |
| <div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="keywordflow">return</span>;</div> |
| <div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  }</div> |
| <div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  }</div> |
| <div class="line"><a name="l00258"></a><span class="lineno"> 258</span> </div> |
| <div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00260"></a><span class="lineno"> 260</span> <span class="comment"> * undouble vowel</span></div> |
| <div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="comment"> * If the words ends CVD, where C is a non-vowel, D is a non-vowel other than I, and V is double a, e, o or u, remove one of the vowels from V (for example, maan -> man, brood -> brod).</span></div> |
| <div class="line"><a name="l00262"></a><span class="lineno"> 262</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00263"></a><span class="lineno"> 263</span> <span class="comment"> * @param sb String being stemmed</span></div> |
| <div class="line"><a name="l00264"></a><span class="lineno"> 264</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="keyword">private</span> <span class="keywordtype">void</span> step4(StringBuilder sb)</div> |
| <div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  {</div> |
| <div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  <span class="keywordflow">if</span> (sb.Length < 4)</div> |
| <div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="keywordflow">return</span>;</div> |
| <div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  String end = sb.ToString(sb.Length - 4, 4);</div> |
| <div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  <span class="keywordtype">char</span> c = end[0];</div> |
| <div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <span class="keywordtype">char</span> v1 = end[1];</div> |
| <div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="keywordtype">char</span> v2 = end[2];</div> |
| <div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="keywordtype">char</span> d = end[3];</div> |
| <div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  <span class="keywordflow">if</span> (v1 == v2 &&</div> |
| <div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  d != <span class="charliteral">'I'</span> &&</div> |
| <div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  v1 != <span class="charliteral">'i'</span> &&</div> |
| <div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  isVowel(v1) &&</div> |
| <div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  !isVowel(d) &&</div> |
| <div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  !isVowel(c))</div> |
| <div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  {</div> |
| <div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  sb.Remove(sb.Length - 2, 1);</div> |
| <div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  }</div> |
| <div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  }</div> |
| <div class="line"><a name="l00284"></a><span class="lineno"> 284</span> </div> |
| <div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00286"></a><span class="lineno"> 286</span> <span class="comment"> * Checks if a term could be stemmed.</span></div> |
| <div class="line"><a name="l00287"></a><span class="lineno"> 287</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00288"></a><span class="lineno"> 288</span> <span class="comment"> * @return true if, and only if, the given term consists in letters.</span></div> |
| <div class="line"><a name="l00289"></a><span class="lineno"> 289</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="keyword">private</span> <span class="keywordtype">bool</span> isStemmable(String term)</div> |
| <div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  {</div> |
| <div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> c = 0; c < term.Length; c++)</div> |
| <div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  {</div> |
| <div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <span class="keywordflow">if</span> (!<span class="keywordtype">char</span>.IsLetter(term[c])) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  }</div> |
| <div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  }</div> |
| <div class="line"><a name="l00298"></a><span class="lineno"> 298</span> </div> |
| <div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  <span class="comment">/*</span></div> |
| <div class="line"><a name="l00300"></a><span class="lineno"> 300</span> <span class="comment"> * Substitute ä, ë, ï, ö, ü, á , é, Ã, ó, ú</span></div> |
| <div class="line"><a name="l00301"></a><span class="lineno"> 301</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  <span class="keyword">private</span> <span class="keywordtype">void</span> substitute(StringBuilder buffer)</div> |
| <div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  {</div> |
| <div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < buffer.Length; i++)</div> |
| <div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  {</div> |
| <div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  <span class="keywordflow">switch</span> (buffer[i])</div> |
| <div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  {</div> |
| <div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="keywordflow">case</span> <span class="stringliteral">'ä'</span>:</div> |
| <div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  <span class="keywordflow">case</span> <span class="stringliteral">'á'</span>:</div> |
| <div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  {</div> |
| <div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  buffer[i] = <span class="charliteral">'a'</span>;</div> |
| <div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  }</div> |
| <div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  <span class="keywordflow">case</span> <span class="stringliteral">'ë'</span>:</div> |
| <div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  <span class="keywordflow">case</span> <span class="stringliteral">'é'</span>:</div> |
| <div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  {</div> |
| <div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  buffer[i] = <span class="charliteral">'e'</span>;</div> |
| <div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  }</div> |
| <div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  <span class="keywordflow">case</span> <span class="stringliteral">'ü'</span>:</div> |
| <div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="keywordflow">case</span> <span class="stringliteral">'ú'</span>:</div> |
| <div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  {</div> |
| <div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  buffer[i] = <span class="charliteral">'u'</span>;</div> |
| <div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  }</div> |
| <div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="keywordflow">case</span> <span class="stringliteral">'ï'</span>:</div> |
| <div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="keywordflow">case</span> <span class="charliteral">'i'</span>:</div> |
| <div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  {</div> |
| <div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  buffer[i] = <span class="charliteral">'i'</span>;</div> |
| <div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  }</div> |
| <div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <span class="keywordflow">case</span> <span class="stringliteral">'ö'</span>:</div> |
| <div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  <span class="keywordflow">case</span> <span class="stringliteral">'ó'</span>:</div> |
| <div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  {</div> |
| <div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  buffer[i] = <span class="charliteral">'o'</span>;</div> |
| <div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  }</div> |
| <div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  }</div> |
| <div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  }</div> |
| <div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  }</div> |
| <div class="line"><a name="l00341"></a><span class="lineno"> 341</span> </div> |
| <div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  <span class="comment">/*private bool isValidSEnding(StringBuilder sb) {</span></div> |
| <div class="line"><a name="l00343"></a><span class="lineno"> 343</span> <span class="comment"> return isValidSEnding(sb, sb.Length - 1);</span></div> |
| <div class="line"><a name="l00344"></a><span class="lineno"> 344</span> <span class="comment"> }*/</span></div> |
| <div class="line"><a name="l00345"></a><span class="lineno"> 345</span> </div> |
| <div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="keyword">private</span> <span class="keywordtype">bool</span> isValidSEnding(StringBuilder sb, <span class="keywordtype">int</span> index)</div> |
| <div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  {</div> |
| <div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  <span class="keywordtype">char</span> c = sb[index];</div> |
| <div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="keywordflow">if</span> (isVowel(c) || c == <span class="charliteral">'j'</span>)</div> |
| <div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  }</div> |
| <div class="line"><a name="l00353"></a><span class="lineno"> 353</span> </div> |
| <div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="comment">/*private bool isValidEnEnding(StringBuilder sb) {</span></div> |
| <div class="line"><a name="l00355"></a><span class="lineno"> 355</span> <span class="comment"> return isValidEnEnding(sb, sb.Length - 1);</span></div> |
| <div class="line"><a name="l00356"></a><span class="lineno"> 356</span> <span class="comment"> }*/</span></div> |
| <div class="line"><a name="l00357"></a><span class="lineno"> 357</span> </div> |
| <div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <span class="keyword">private</span> <span class="keywordtype">bool</span> isValidEnEnding(StringBuilder sb, <span class="keywordtype">int</span> index)</div> |
| <div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  {</div> |
| <div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <span class="keywordtype">char</span> c = sb[index];</div> |
| <div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <span class="keywordflow">if</span> (isVowel(c))</div> |
| <div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <span class="keywordflow">if</span> (c < 3)</div> |
| <div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  <span class="comment">// ends with "gem"?</span></div> |
| <div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <span class="keywordflow">if</span> (c == <span class="charliteral">'m'</span> && sb[index - 2] == <span class="charliteral">'g'</span> && sb[index - 1] == <span class="charliteral">'e'</span>)</div> |
| <div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  }</div> |
| <div class="line"><a name="l00370"></a><span class="lineno"> 370</span> </div> |
| <div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  <span class="keyword">private</span> <span class="keywordtype">void</span> unDouble(StringBuilder sb)</div> |
| <div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  {</div> |
| <div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  unDouble(sb, sb.Length);</div> |
| <div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  }</div> |
| <div class="line"><a name="l00375"></a><span class="lineno"> 375</span> </div> |
| <div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  <span class="keyword">private</span> <span class="keywordtype">void</span> unDouble(StringBuilder sb, <span class="keywordtype">int</span> endIndex)</div> |
| <div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  {</div> |
| <div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  String s = sb.ToString(0, endIndex);</div> |
| <div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <span class="keywordflow">if</span> (s.EndsWith(<span class="stringliteral">"kk"</span>) || s.EndsWith(<span class="stringliteral">"tt"</span>) || s.EndsWith(<span class="stringliteral">"dd"</span>) || s.EndsWith(<span class="stringliteral">"nn"</span>) || s.EndsWith(<span class="stringliteral">"mm"</span>) || s.EndsWith(<span class="stringliteral">"ff"</span>))</div> |
| <div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  {</div> |
| <div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  sb.Remove(endIndex - 1, 1);</div> |
| <div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  }</div> |
| <div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  }</div> |
| <div class="line"><a name="l00384"></a><span class="lineno"> 384</span> </div> |
| <div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <span class="keyword">private</span> <span class="keywordtype">int</span> getRIndex(StringBuilder sb, <span class="keywordtype">int</span> start)</div> |
| <div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  {</div> |
| <div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="keywordflow">if</span> (start == 0)</div> |
| <div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  start = 1;</div> |
| <div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="keywordtype">int</span> i = start;</div> |
| <div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  <span class="keywordflow">for</span> (; i < sb.Length; i++)</div> |
| <div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  {</div> |
| <div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  <span class="comment">//first non-vowel preceded by a vowel</span></div> |
| <div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  <span class="keywordflow">if</span> (!isVowel(sb[i]) && isVowel(sb[i - 1]))</div> |
| <div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  {</div> |
| <div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  <span class="keywordflow">return</span> i + 1;</div> |
| <div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  }</div> |
| <div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  }</div> |
| <div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  <span class="keywordflow">return</span> i + 1;</div> |
| <div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  }</div> |
| <div class="line"><a name="l00400"></a><span class="lineno"> 400</span> </div> |
| <div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  <span class="keyword">private</span> <span class="keywordtype">void</span> storeYandI(StringBuilder sb)</div> |
| <div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  {</div> |
| <div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="keywordflow">if</span> (sb[0] == <span class="charliteral">'y'</span>)</div> |
| <div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  sb[0] = <span class="charliteral">'Y'</span>;</div> |
| <div class="line"><a name="l00405"></a><span class="lineno"> 405</span> </div> |
| <div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  <span class="keywordtype">int</span> last = sb.Length - 1;</div> |
| <div class="line"><a name="l00407"></a><span class="lineno"> 407</span> </div> |
| <div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 1; i < last; i++)</div> |
| <div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  {</div> |
| <div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  <span class="keywordflow">switch</span> (sb[i])</div> |
| <div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  {</div> |
| <div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  <span class="keywordflow">case</span> <span class="charliteral">'i'</span>:</div> |
| <div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  {</div> |
| <div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  <span class="keywordflow">if</span> (isVowel(sb[i - 1]) &&</div> |
| <div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  isVowel(sb[i + 1])</div> |
| <div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  )</div> |
| <div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  sb[i] = <span class="charliteral">'I'</span>;</div> |
| <div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  }</div> |
| <div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <span class="keywordflow">case</span> <span class="charliteral">'y'</span>:</div> |
| <div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  {</div> |
| <div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  <span class="keywordflow">if</span> (isVowel(sb[i - 1]))</div> |
| <div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  sb[i] = <span class="charliteral">'Y'</span>;</div> |
| <div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  }</div> |
| <div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  }</div> |
| <div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  }</div> |
| <div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  <span class="keywordflow">if</span> (last > 0 && sb[last] == <span class="charliteral">'y'</span> && isVowel(sb[last - 1]))</div> |
| <div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  sb[last] = <span class="charliteral">'Y'</span>;</div> |
| <div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  }</div> |
| <div class="line"><a name="l00431"></a><span class="lineno"> 431</span> </div> |
| <div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  <span class="keyword">private</span> <span class="keywordtype">void</span> reStoreYandI(StringBuilder sb)</div> |
| <div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  {</div> |
| <div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  String tmp = sb.ToString();</div> |
| <div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  sb.Length = 0;</div> |
| <div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  sb.Insert(0, tmp.Replace(<span class="stringliteral">"I"</span>, <span class="stringliteral">"i"</span>).Replace(<span class="stringliteral">"Y"</span>, <span class="stringliteral">"y"</span>));</div> |
| <div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  }</div> |
| <div class="line"><a name="l00438"></a><span class="lineno"> 438</span> </div> |
| <div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  <span class="keyword">private</span> <span class="keywordtype">bool</span> isVowel(<span class="keywordtype">char</span> c)</div> |
| <div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  {</div> |
| <div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  <span class="keywordflow">switch</span> (c)</div> |
| <div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  {</div> |
| <div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  <span class="keywordflow">case</span> <span class="charliteral">'e'</span>:</div> |
| <div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  <span class="keywordflow">case</span> <span class="charliteral">'a'</span>:</div> |
| <div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  <span class="keywordflow">case</span> <span class="charliteral">'o'</span>:</div> |
| <div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  <span class="keywordflow">case</span> <span class="charliteral">'i'</span>:</div> |
| <div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  <span class="keywordflow">case</span> <span class="charliteral">'u'</span>:</div> |
| <div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  <span class="keywordflow">case</span> <span class="charliteral">'y'</span>:</div> |
| <div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  <span class="keywordflow">case</span> <span class="stringliteral">'è'</span>:</div> |
| <div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  {</div> |
| <div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  }</div> |
| <div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  }</div> |
| <div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  }</div> |
| <div class="line"><a name="l00456"></a><span class="lineno"> 456</span> </div> |
| <div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <span class="keyword">protected</span> <span class="keyword">internal</span> <span class="keywordtype">void</span> SetStemDictionary(IDictionary<string, string> dict)</div> |
| <div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  {</div> |
| <div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  _stemDict = dict;</div> |
| <div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  }</div> |
| <div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  }</div> |
| <div class="line"><a name="l00462"></a><span class="lineno"> 462</span> }</div> |
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