001    /*
002     * Sonar, open source software quality management tool.
003     * Copyright (C) 2009 SonarSource SA
004     * mailto:contact AT sonarsource DOT com
005     *
006     * Sonar is free software; you can redistribute it and/or
007     * modify it under the terms of the GNU Lesser General Public
008     * License as published by the Free Software Foundation; either
009     * version 3 of the License, or (at your option) any later version.
010     *
011     * Sonar is distributed in the hope that it will be useful,
012     * but WITHOUT ANY WARRANTY; without even the implied warranty of
013     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014     * Lesser General Public License for more details.
015     *
016     * You should have received a copy of the GNU Lesser General Public
017     * License along with Sonar; if not, write to the Free Software
018     * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
019     */
020    package org.sonar.squid.recognizer;
021    
022    import java.util.regex.Matcher;
023    import java.util.regex.Pattern;
024    
025    public class RegexDetector extends Detector {
026    
027      private Pattern regex;
028    
029      public RegexDetector(String regex, double probability) {
030        super(probability);
031        this.regex = Pattern.compile(regex);
032      }
033    
034      @Override
035      public int scan(String line) {
036        Matcher matcher = regex.matcher(line);
037        int matchers = 0;
038        while (matcher.find()) {
039          matchers++;
040        }
041        return matchers;
042      }
043    }