001    /*
002     * Sonar, open source software quality management tool.
003     * Copyright (C) 2008-2012 SonarSource
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    
021    package net.sourceforge.pmd.cpd;
022    
023    import java.io.File;
024    import java.io.FilenameFilter;
025    
026    public abstract class AbstractLanguage implements Language {
027      private final Tokenizer tokenizer;
028      private final FilenameFilter fileFilter;
029    
030      public AbstractLanguage(Tokenizer tokenizer, String... extensions) {
031        this.tokenizer = tokenizer;
032        fileFilter = new ExtensionsFilter(extensions);
033      }
034    
035      /**
036       * @deprecated in 2.14, seems that not used in Sonar ecosystem - we don't scan directories.
037       */
038      @Deprecated
039      public FilenameFilter getFileFilter() {
040        return fileFilter;
041      }
042    
043      public Tokenizer getTokenizer() {
044        return tokenizer;
045      }
046    
047      private static class ExtensionsFilter implements FilenameFilter {
048        private final String[] extensions;
049    
050        public ExtensionsFilter(String... extensions) {
051          this.extensions = new String[extensions.length];
052          for (int i = 0; i < extensions.length; i++) {
053            this.extensions[i] = extensions[i].toUpperCase();
054          }
055        }
056    
057        public boolean accept(File dir, String name) {
058          File file = new File(dir, name);
059          if (file.isDirectory()) {
060            return true;
061          }
062          String uppercaseName = name.toUpperCase();
063          for (String extension : extensions) {
064            if (uppercaseName.endsWith(extension)) {
065              return true;
066            }
067          }
068          return false;
069        }
070      }
071    }