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| <div class="title">MappingCharFilter.cs</div> </div> |
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| <a href="_mapping_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.Collections.Generic;</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="l00028"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_mapping_char_filter.html"> 28</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_mapping_char_filter.html" title="Simplistic CharFilter that applies the mappings contained in a NormalizeCharMap to the character stre...">MappingCharFilter</a> : <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_base_char_filter.html">BaseCharFilter</a></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="keyword">private</span> readonly <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_normalize_char_map.html" title="Holds a map of String input to String output, to be used with MappingCharFilter. ">NormalizeCharMap</a> normMap;</div> |
| <div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keyword">private</span> LinkedList<char> buffer;</div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keyword">private</span> System.String replacement;</div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keyword">private</span> <span class="keywordtype">int</span> charPointer;</div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keyword">private</span> <span class="keywordtype">int</span> nextCharCounter;</div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  </div> |
| <div class="line"><a name="l00037"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_mapping_char_filter.html#ab0d57b08d5c7420c68172d7c30816f56"> 37</a></span>  <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_mapping_char_filter.html" title="Simplistic CharFilter that applies the mappings contained in a NormalizeCharMap to the character stre...">MappingCharFilter</a>(<a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_normalize_char_map.html" title="Holds a map of String input to String output, to be used with MappingCharFilter. ">NormalizeCharMap</a> normMap, <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)</div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  : 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>  this.normMap = normMap;</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>  </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_mapping_char_filter.html#ad4541be021d86123f8bc9fea9f554828"> 44</a></span>  <span class="keyword">public</span> <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_mapping_char_filter.html" title="Simplistic CharFilter that applies the mappings contained in a NormalizeCharMap to the character stre...">MappingCharFilter</a>(<a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_normalize_char_map.html" title="Holds a map of String input to String output, to be used with MappingCharFilter. ">NormalizeCharMap</a> normMap, System.IO.TextReader @in)</div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  : base(<a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_char_reader.html" title="CharReader is a Reader wrapper. It reads chars from Reader and outputs CharStream, defining an identify function CorrectOffset method that simply returns the provided offset. ">CharReader</a>.Get(@in))</div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  {</div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  this.normMap = normMap;</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> |
| <div class="line"><a name="l00050"></a><span class="lineno"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_mapping_char_filter.html#a1d8e380c5d561d228d3c5ad5d855c58b"> 50</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">int</span> Read()</div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  {</div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordflow">while</span> (<span class="keyword">true</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"> 54</span>  <span class="keywordflow">if</span> (replacement != null && charPointer < replacement.Length)</div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  {</div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">return</span> replacement[charPointer++];</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>  </div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordtype">int</span> firstChar = NextChar();</div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">if</span> (firstChar == - 1)</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordflow">return</span> - 1;</div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_normalize_char_map.html" title="Holds a map of String input to String output, to be used with MappingCharFilter. ">NormalizeCharMap</a> nm = normMap.submap != null</div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  ? normMap.submap[(char) firstChar]</div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  : null;</div> |
| <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">if</span> (nm == null)</div> |
| <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">return</span> firstChar;</div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_normalize_char_map.html" title="Holds a map of String input to String output, to be used with MappingCharFilter. ">NormalizeCharMap</a> result = Match(nm);</div> |
| <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">if</span> (result == null)</div> |
| <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">return</span> firstChar;</div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  replacement = result.normStr;</div> |
| <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  charPointer = 0;</div> |
| <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">if</span> (result.diff != 0)</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="keywordtype">int</span> prevCumulativeDiff = LastCumulativeDiff;</div> |
| <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">if</span> (result.diff < 0)</div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  {</div> |
| <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < - result.diff; i++)</div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  AddOffCorrectMap(nextCharCounter + i - prevCumulativeDiff, prevCumulativeDiff - 1 - i);</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>  <span class="keywordflow">else</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>  AddOffCorrectMap(nextCharCounter - result.diff - prevCumulativeDiff, prevCumulativeDiff + result.diff);</div> |
| <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  }</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>  }</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>  <span class="keyword">private</span> <span class="keywordtype">int</span> NextChar()</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>  nextCharCounter++;</div> |
| <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordflow">if</span> (buffer != null && buffer.Count != 0)</div> |
| <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  {</div> |
| <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordtype">char</span> tempObject = buffer.First.Value;</div> |
| <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  buffer.RemoveFirst();</div> |
| <div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">return</span> (tempObject);</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>  <span class="keywordflow">return</span> input.Read();</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>  <span class="keyword">private</span> <span class="keywordtype">void</span> PushChar(<span class="keywordtype">int</span> c)</div> |
| <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  {</div> |
| <div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  nextCharCounter--;</div> |
| <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">if</span> (buffer == null)</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>  buffer = <span class="keyword">new</span> LinkedList<char>();</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>  buffer.AddFirst((<span class="keywordtype">char</span>)c);</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>  </div> |
| <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keyword">private</span> <span class="keywordtype">void</span> PushLastChar(<span class="keywordtype">int</span> c)</div> |
| <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  {</div> |
| <div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordflow">if</span> (buffer == null)</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>  buffer = <span class="keyword">new</span> LinkedList<char>();</div> |
| <div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  }</div> |
| <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  buffer.AddLast((<span class="keywordtype">char</span>)c);</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>  </div> |
| <div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keyword">private</span> NormalizeCharMap Match(NormalizeCharMap map)</div> |
| <div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  {</div> |
| <div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  NormalizeCharMap result = null;</div> |
| <div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">if</span> (map.submap != null)</div> |
| <div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  {</div> |
| <div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordtype">int</span> chr = NextChar();</div> |
| <div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordflow">if</span> (chr != - 1)</div> |
| <div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  {</div> |
| <div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  NormalizeCharMap subMap = map.submap[(char)chr];</div> |
| <div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">if</span> (subMap != null)</div> |
| <div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  {</div> |
| <div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  result = Match(subMap);</div> |
| <div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  }</div> |
| <div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordflow">if</span> (result == null)</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>  PushChar(chr);</div> |
| <div class="line"><a name="l00135"></a><span class="lineno"> 135</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>  }</div> |
| <div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">if</span> (result == null && map.normStr != null)</div> |
| <div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  {</div> |
| <div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  result = map;</div> |
| <div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  }</div> |
| <div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordflow">return</span> result;</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"><a class="code" href="class_lucene_1_1_net_1_1_analysis_1_1_mapping_char_filter.html#a9cf53909c4777c1fb1fc25d985d1c867"> 145</a></span>  <span class="keyword">public</span> <span class="keyword">override</span> <span class="keywordtype">int</span> Read(System.Char[] cbuf, <span class="keywordtype">int</span> off, <span class="keywordtype">int</span> len)</div> |
| <div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  {</div> |
| <div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  var tmp = <span class="keyword">new</span> <span class="keywordtype">char</span>[len];</div> |
| <div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordtype">int</span> l = input.Read(tmp, 0, len);</div> |
| <div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keywordflow">if</span> (l != 0)</div> |
| <div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  {</div> |
| <div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < l; i++)</div> |
| <div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  PushLastChar(tmp[i]);</div> |
| <div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  }</div> |
| <div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  l = 0;</div> |
| <div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = off; i < off + len; i++)</div> |
| <div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  {</div> |
| <div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordtype">int</span> c = Read();</div> |
| <div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">if</span> (c == - 1)</div> |
| <div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  cbuf[i] = (char) c;</div> |
| <div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  l++;</div> |
| <div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  }</div> |
| <div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordflow">return</span> l == 0?- 1:l;</div> |
| <div class="line"><a name="l00164"></a><span class="lineno"> 164</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> |
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