| /* |
| * 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. |
| */ |
| package org.apache.lucene.analysis.cn.smart; |
| |
| import java.io.BufferedReader; |
| import java.io.IOException; |
| import java.nio.charset.StandardCharsets; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.util.Properties; |
| |
| /** |
| * Manages analysis data configuration for SmartChineseAnalyzer |
| * |
| * <p>SmartChineseAnalyzer has a built-in dictionary and stopword list out-of-box. |
| * |
| * @lucene.experimental |
| */ |
| public class AnalyzerProfile { |
| |
| /** Global indicating the configured analysis data directory */ |
| public static String ANALYSIS_DATA_DIR = ""; |
| |
| static { |
| init(); |
| } |
| |
| private static void init() { |
| String dirName = "analysis-data"; |
| String propName = "analysis.properties"; |
| |
| // Try the system property:-Danalysis.data.dir=/path/to/analysis-data |
| ANALYSIS_DATA_DIR = System.getProperty("analysis.data.dir", ""); |
| if (ANALYSIS_DATA_DIR.length() != 0) return; |
| |
| Path[] candidateFiles = |
| new Path[] { |
| Paths.get(dirName), |
| Paths.get("lib").resolve(dirName), |
| Paths.get(propName), |
| Paths.get("lib").resolve(propName) |
| }; |
| for (Path file : candidateFiles) { |
| if (Files.exists(file)) { |
| if (Files.isDirectory(file)) { |
| ANALYSIS_DATA_DIR = file.toAbsolutePath().toString(); |
| } else if (Files.isRegularFile(file) && getAnalysisDataDir(file).length() != 0) { |
| ANALYSIS_DATA_DIR = getAnalysisDataDir(file).toString(); |
| } |
| break; |
| } |
| } |
| |
| if (ANALYSIS_DATA_DIR.length() == 0) { |
| // Dictionary directory cannot be found. |
| throw new RuntimeException( |
| "WARNING: Can not find lexical dictionary directory!" |
| + " This will cause unpredictable exceptions in your application!" |
| + " Please refer to the manual to download the dictionaries."); |
| } |
| } |
| |
| private static String getAnalysisDataDir(Path propFile) { |
| Properties prop = new Properties(); |
| try (BufferedReader reader = Files.newBufferedReader(propFile, StandardCharsets.UTF_8)) { |
| prop.load(reader); |
| return prop.getProperty("analysis.data.dir", ""); |
| } catch (IOException e) { |
| return ""; |
| } |
| } |
| } |