X-Git-Url: https://git.mdrn.pl/pylucene.git/blobdiff_plain/a2e61f0c04805cfcb8706176758d1283c7e3a55c..aaeed5504b982cf3545252ab528713250aa33eed:/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/hi/HindiStemmer.java?ds=sidebyside diff --git a/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/hi/HindiStemmer.java b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/hi/HindiStemmer.java new file mode 100644 index 0000000..68ef2cc --- /dev/null +++ b/lucene-java-3.5.0/lucene/contrib/analyzers/common/src/java/org/apache/lucene/analysis/hi/HindiStemmer.java @@ -0,0 +1,121 @@ +package org.apache.lucene.analysis.hi; + +/** + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You 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 static org.apache.lucene.analysis.util.StemmerUtil.*; + +/** + * Light Stemmer for Hindi. + *
+ * Implements the algorithm specified in: + * A Lightweight Stemmer for Hindi + * Ananthakrishnan Ramanathan and Durgesh D Rao. + * http://computing.open.ac.uk/Sites/EACLSouthAsia/Papers/p6-Ramanathan.pdf + *
+ */ +public class HindiStemmer { + public int stem(char buffer[], int len) { + // 5 + if ((len > 6) && (endsWith(buffer, len, "ाà¤à¤à¤à¥") + || endsWith(buffer, len, "ाà¤à¤à¤à¥") + || endsWith(buffer, len, "ाà¤à¤à¤à¥") + || endsWith(buffer, len, "ाà¤à¤à¤à¤¾") + || endsWith(buffer, len, "ाà¤à¤¯à¤¾à¤") + || endsWith(buffer, len, "ाà¤à¤¯à¥à¤") + || endsWith(buffer, len, "ाà¤à¤¯à¤¾à¤") + )) + return len - 5; + + // 4 + if ((len > 5) && (endsWith(buffer, len, "ाà¤à¤à¥") + || endsWith(buffer, len, "ाà¤à¤à¤¾") + || endsWith(buffer, len, "ाà¤à¤à¥") + || endsWith(buffer, len, "ाà¤à¤à¥") + || endsWith(buffer, len, "à¤à¤à¤à¥") + || endsWith(buffer, len, "à¥à¤à¤à¥") + || endsWith(buffer, len, "à¤à¤à¤à¥") + || endsWith(buffer, len, "à¥à¤à¤à¥") + || endsWith(buffer, len, "à¥à¤à¤à¥") + || endsWith(buffer, len, "à¥à¤à¤à¤¾") + || endsWith(buffer, len, "ातà¥à¤") + || endsWith(buffer, len, "नाà¤à¤") + || endsWith(buffer, len, "नाà¤à¤") + || endsWith(buffer, len, "ताà¤à¤") + || endsWith(buffer, len, "ताà¤à¤") + || endsWith(buffer, len, "ियाà¤") + || endsWith(buffer, len, "ियà¥à¤") + || endsWith(buffer, len, "ियाà¤") + )) + return len - 4; + + // 3 + if ((len > 4) && (endsWith(buffer, len, "ाà¤à¤°") + || endsWith(buffer, len, "ाà¤à¤") + || endsWith(buffer, len, "ाà¤à¤") + || endsWith(buffer, len, "ाया") + || endsWith(buffer, len, "à¥à¤à¥") + || endsWith(buffer, len, "à¥à¤à¤¾") + || endsWith(buffer, len, "à¥à¤à¥") + || endsWith(buffer, len, "à¥à¤à¥") + || endsWith(buffer, len, "ानà¥") + || endsWith(buffer, len, "ाना") + || endsWith(buffer, len, "ातà¥") + || endsWith(buffer, len, "ातà¥") + || endsWith(buffer, len, "ाता") + || endsWith(buffer, len, "तà¥à¤") + || endsWith(buffer, len, "ाà¤à¤") + || endsWith(buffer, len, "ाà¤à¤") + || endsWith(buffer, len, "à¥à¤à¤") + || endsWith(buffer, len, "à¥à¤à¤") + || endsWith(buffer, len, "à¥à¤à¤") + )) + return len - 3; + + // 2 + if ((len > 3) && (endsWith(buffer, len, "à¤à¤°") + || endsWith(buffer, len, "ाà¤") + || endsWith(buffer, len, "िà¤") + || endsWith(buffer, len, "ाà¤") + || endsWith(buffer, len, "ाà¤") + || endsWith(buffer, len, "नà¥") + || endsWith(buffer, len, "नà¥") + || endsWith(buffer, len, "ना") + || endsWith(buffer, len, "तà¥") + || endsWith(buffer, len, "à¥à¤") + || endsWith(buffer, len, "तà¥") + || endsWith(buffer, len, "ता") + || endsWith(buffer, len, "ाà¤") + || endsWith(buffer, len, "ाà¤") + || endsWith(buffer, len, "à¥à¤") + || endsWith(buffer, len, "à¥à¤") + )) + return len - 2; + + // 1 + if ((len > 2) && (endsWith(buffer, len, "à¥") + || endsWith(buffer, len, "à¥") + || endsWith(buffer, len, "à¥") + || endsWith(buffer, len, "à¥") + || endsWith(buffer, len, "à¥") + || endsWith(buffer, len, "ि") + || endsWith(buffer, len, "ा") + )) + return len - 1; + return len; + } +}