001    /* PAVLOV -- Multiple Choice Study System
002     * Copyright (C) 2000 - 2004 T.J. Willis
003     * 
004     * This program is free software; you can redistribute it and/or
005     * modify it under the terms of the GNU General Public License
006     * as published by the Free Software Foundation; either version 2
007     * of the License, or (at your option) any later version.
008     *      
009     * This program is distributed in the hope that it will be useful,
010     * but WITHOUT ANY WARRANTY; without even the implied warranty of
011     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
012     * GNU General Public License for more details.
013     *          
014     * You should have received a copy of the GNU General Public License
015     * along with this program; if not, write to the Free Software
016     * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
017     *  
018     * $Header: /cvsroot/pavlov/net/sourceforge/pavlov/library/LibraryLoader.java,v 1.7 2004/06/24 11:41:56 tj_willis Exp $
019     */ 
020    package net.sourceforge.pavlov.library;
021    import org.xml.sax.*;
022    import org.xml.sax.helpers.*;
023    import java.io.*;
024    import net.sourceforge.pavlov.zipUtilities.XMLFileFilter;
025    import java.util.*;
026    import org.apache.log4j.*;
027    
028    
029    /**
030     * Utility class to load all the books in a given directory to a Library.
031     * @author <a href="mailto:tj_willis@users.sourceforge.net"></a>
032     * @version 1.0
033     * @see Library
034     * @see LibraryXMLHandler
035     * @has 1 Has 1 net.sourceforge.pavlov.library.BookXMLHandler
036     */
037    public class LibraryLoader
038    {
039       
040        /**
041         * Loads all the book files in the directory specified by the String
042         * fname into a library and returns the resulting library.
043         *
044         * @param fname a <code>String</code> value
045         * @return a <code>Library</code> value
046         */
047        public static Library loadLibrary(String fname)
048      {
049        File dir = new File(fname);
050        if(dir==null) return null;
051        if(!dir.exists()) return null;
052        if(!dir.isDirectory()) return null;
053        if(!dir.canRead()) return null;
054    
055        //System.out.println("Got the directory");
056    /*
057        XMLReader xr = null;
058        try
059          {
060            xr = XMLReaderFactory.createXMLReader();
061          } catch (Exception e) {
062            return null;
063          }
064    */
065        XMLFileFilter filt = new XMLFileFilter();
066        File filearr[] = dir.listFiles(filt);
067        List v = Arrays.asList(filearr);
068        Iterator it = v.iterator();
069    
070        Library lib = new Library();
071        lib.setDirectory(dir);
072        // Create SAX 2 parser...
073    
074        //BookXMLHandler br = new BookXMLHandler();
075    
076        // Set the ContentHandler...
077        //xr.setContentHandler(br);
078    
079        while (it.hasNext()) {
080          File cand = (File) it.next();
081          Book b = null;
082    
083          try {
084                  /*
085            FileReader fr = new FileReader(cand);
086            //FileInputStream frs = new FileInputStream(cand);
087            InputSource is = new InputSource(fr);
088            is.setEncoding("UTF8");
089            xr.parse(is);
090            b = br.getBook();
091            */
092            b = Book.loadFrom(cand);
093            lib.addBook(b);
094            //System.out.println("Added Book : " + b.getName());
095          } catch (Exception e) {
096            e.printStackTrace();
097          }
098        }
099        return lib;
100      }
101    }