1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * See LICENSE.txt included in this distribution for the specific 9 * language governing permissions and limitations under the License. 10 * 11 * When distributing Covered Code, include this CDDL HEADER in each 12 * file and include the License file at LICENSE.txt. 13 * If applicable, add the following below this CDDL HEADER, with the 14 * fields enclosed by brackets "[]" replaced with your own identifying 15 * information: Portions Copyright [yyyy] [name of copyright owner] 16 * 17 * CDDL HEADER END 18 */ 19 20 /* 21 * Copyright (c) 2008, 2019, Oracle and/or its affiliates. All rights reserved. 22 */ 23 package org.opengrok.indexer.search.context; 24 25 import java.util.logging.Level; 26 import java.util.logging.Logger; 27 import java.util.regex.Pattern; 28 import java.util.regex.PatternSyntaxException; 29 import org.opengrok.indexer.logger.LoggerFactory; 30 31 /** 32 * 33 * @author dobrou@gmail.com 34 */ 35 class RegexpMatcher extends LineMatcher { 36 37 private static final Logger LOGGER = LoggerFactory.getLogger(RegexpMatcher.class); 38 39 private final Pattern termRegexp; 40 RegexpMatcher(String term, boolean caseInsensitive)41 RegexpMatcher(String term, boolean caseInsensitive) { 42 super(caseInsensitive); 43 Pattern regexp; 44 try { 45 regexp = Pattern.compile(term, caseInsensitive ? Pattern.CASE_INSENSITIVE : 0 ); 46 } catch ( PatternSyntaxException e) { 47 regexp = null; 48 LOGGER.log(Level.WARNING, "RegexpMatcher: {0}", e.getMessage() ); 49 } 50 this.termRegexp = regexp; 51 } 52 53 @Override match(String line)54 public int match(String line) { 55 return (termRegexp != null && termRegexp.matcher(line).matches()) ? MATCHED : NOT_MATCHED; 56 } 57 58 } 59