pylucene 3.5.0-3

[pylucene.git] / lucene-java-3.4.0 / lucene / contrib / analyzers / common / src / java / org / apache / lucene / analysis / el / GreekLowerCaseFilter.java

diff --git a/lucene-java-3.4.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/el/GreekLowerCaseFilter.java b/lucene-java-3.4.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/el/GreekLowerCaseFilter.java
deleted file mode 100644 (file)
index d93860e..0000000
--- a/lucene-java-3.4.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/el/GreekLowerCaseFilter.java
+++ /dev/null
@@ -1,134 +0,0 @@
-package org.apache.lucene.analysis.el;
-
-/**
- * Copyright 2005 The Apache Software Foundation
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-import java.io.IOException;
-
-import org.apache.lucene.analysis.TokenFilter;
-import org.apache.lucene.analysis.TokenStream;
-import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;
-import org.apache.lucene.util.CharacterUtils;
-import org.apache.lucene.util.Version;
-
-/**
- * Normalizes token text to lower case, removes some Greek diacritics,
- * and standardizes final sigma to sigma. 
- * <a name="version"/>
- * <p>You must specify the required {@link Version}
- * compatibility when creating GreekLowerCaseFilter:
- * <ul>
- *   <li> As of 3.1, supplementary characters are properly lowercased.
- * </ul>
- */
-public final class GreekLowerCaseFilter extends TokenFilter {
-  private final CharTermAttribute termAtt = addAttribute(CharTermAttribute.class);
-  private final CharacterUtils charUtils;
-
-  /** @deprecated Use {@link #GreekLowerCaseFilter(Version, TokenStream)} instead. */
-  @Deprecated
-  public GreekLowerCaseFilter(TokenStream in) {
-    this(Version.LUCENE_30, in);
-  }
-  
-  /**
-   * Create a GreekLowerCaseFilter that normalizes Greek token text.
-   * 
-   * @param matchVersion Lucene compatibility version, 
-   *   See <a href="#version">above</a>
-   * @param in TokenStream to filter
-   */
-  public GreekLowerCaseFilter(Version matchVersion, TokenStream in) {
-    super(in);
-    this.charUtils = CharacterUtils.getInstance(matchVersion);
-  }
-  
-  @Override
-  public boolean incrementToken() throws IOException {
-    if (input.incrementToken()) {
-      char[] chArray = termAtt.buffer();
-      int chLen = termAtt.length();
-      for (int i = 0; i < chLen;) {
-        i += Character.toChars(
-            lowerCase(charUtils.codePointAt(chArray, i)), chArray, i);
-       }
-      return true;
-    } else {
-      return false;
-    }
-  }
-  
-  private int lowerCase(int codepoint) {
-    switch(codepoint) {
-      /* There are two lowercase forms of sigma:
-       *   U+03C2: small final sigma (end of word)
-       *   U+03C3: small sigma (otherwise)
-       *   
-       * Standardize both to U+03C3
-       */
-      case '\u03C2': /* small final sigma */
-        return '\u03C3'; /* small sigma */
-        
-      /* Some greek characters contain diacritics.
-       * This filter removes these, converting to the lowercase base form.
-       */
-        
-      case '\u0386': /* capital alpha with tonos */
-      case '\u03AC': /* small alpha with tonos */
-        return '\u03B1'; /* small alpha */
-        
-      case '\u0388': /* capital epsilon with tonos */
-      case '\u03AD': /* small epsilon with tonos */
-        return '\u03B5'; /* small epsilon */
-        
-      case '\u0389': /* capital eta with tonos */
-      case '\u03AE': /* small eta with tonos */
-        return '\u03B7'; /* small eta */
-        
-      case '\u038A': /* capital iota with tonos */
-      case '\u03AA': /* capital iota with dialytika */
-      case '\u03AF': /* small iota with tonos */
-      case '\u03CA': /* small iota with dialytika */
-      case '\u0390': /* small iota with dialytika and tonos */
-        return '\u03B9'; /* small iota */
-        
-      case '\u038E': /* capital upsilon with tonos */
-      case '\u03AB': /* capital upsilon with dialytika */
-      case '\u03CD': /* small upsilon with tonos */
-      case '\u03CB': /* small upsilon with dialytika */
-      case '\u03B0': /* small upsilon with dialytika and tonos */
-        return '\u03C5'; /* small upsilon */
-        
-      case '\u038C': /* capital omicron with tonos */
-      case '\u03CC': /* small omicron with tonos */
-        return '\u03BF'; /* small omicron */
-        
-      case '\u038F': /* capital omega with tonos */
-      case '\u03CE': /* small omega with tonos */
-        return '\u03C9'; /* small omega */
-        
-      /* The previous implementation did the conversion below.
-       * Only implemented for backwards compatibility with old indexes.
-       */
-        
-      case '\u03A2': /* reserved */
-        return '\u03C2'; /* small final sigma */
-        
-      default:
-        return Character.toLowerCase(codepoint);
-    }
-  }
-}