ExtensionsIncludedFileFilter.java

/**
 * Copyright (C) 2008-2010, Squale Project - http://www.squale.org
 *
 * This file is part of Squale.
 *
 * Squale is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or any later version.
 *
 * Squale is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Squale.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.squale.squalix.util.file;

import java.io.File;
import java.io.FileFilter;
import java.util.List;

/**
 * Filtre de recherche bas� sur une extension et des r�pertoires exclus
 */
public class ExtensionsIncludedFileFilter
    implements FileFilter
{
    /** Extensions autoris�es */
    private String[] mExtensions;

    /** Fichiers autoris�s sous la forme de cha�ne */
    private List mIncludedDirs;

    /** Le r�pertoire de recherche */
    private File mBaseDir;

    /**
     * @param pExtensions extension
     * @param pIncludedDirs r�pertoires exclus
     */
    public ExtensionsIncludedFileFilter( String[] pExtensions, List pIncludedDirs )
    {
        mExtensions = new String[pExtensions.length];
        for ( int i = 0; i < pExtensions.length; i++ )
        {
            mExtensions[i] = pExtensions[i].toLowerCase();
        }
        mIncludedDirs = pIncludedDirs;
    }

    /**
     * {@inheritDoc}
     * 
     * @see java.io.FileFilter#accept(java.io.File)
     */
    public boolean accept( File pFile )
    {
        boolean result = true;
        // Si il s'agit d'un fichier, on teste son extension
        if ( pFile.isFile() )
        {
            result = checkExtension( pFile );
        }
        if ( result )
        {
            String regexp =
                mBaseDir.getAbsolutePath().replace( '/', File.separatorChar ).replace( '\\', File.separatorChar );
            regexp = regexp.replaceAll( "\\\\", "\\\\\\\\" );
            regexp += "[\\\\/]*";
            String filePath = pFile.getAbsolutePath().replaceFirst( regexp, "" );
            // On v�rifie que le nom de chemin n'est pas exclu
            result = mIncludedDirs.contains( filePath );
        }
        return result;
    }

    /**
     * Test de l'extension d'un fichier
     * 
     * @param pFile fichier � tester
     * @return true si le fichier satisfait aux crit�res d'extension
     */
    protected boolean checkExtension( File pFile )
    {
        boolean result = false;
        String fileName = pFile.getName();
        int index = fileName.lastIndexOf( '.' );
        if ( index != -1 )
        {
            String extension = fileName.substring( index ).toLowerCase();
            // Parcours de chaque extension
            for ( int i = 0; ( i < mExtensions.length ) && ( !result ); i++ )
            {
                result = extension.equals( mExtensions[i] );
            }
        }
        return result;
    }

    /**
     * @param pDir le r�pertoire de recherche
     */
    public void setBaseDir( File pDir )
    {
        mBaseDir = pDir;
    }

}