/**

  * Distribution License:

  * JSword is free software; you can redistribute it and/or modify it under

  * the terms of the GNU Lesser General Public License, version 2.1 or later

  * as published by the Free Software Foundation. This program 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 Lesser General Public License for more details.

  *

  * The License is available on the internet at:

  *      http://www.gnu.org/copyleft/lgpl.html

  * or by writing to:

  *      Free Software Foundation, Inc.

  *      59 Temple Place - Suite 330

  *      Boston, MA 02111-1307, USA

  *

  * © CrossWire Bible Society, 2005 - 2016

  *

  */

 package org.crosswire.jsword.book.readings;

 import java.io.IOException;

 import java.net.URL;

 import java.util.ArrayList;

 import java.util.List;

 import org.crosswire.common.util.NetUtil;

 import org.crosswire.common.util.ResourceUtil;

 import org.crosswire.common.util.URIFilter;

 import org.crosswire.jsword.book.Book;

 import org.crosswire.jsword.book.BookCategory;

 import org.crosswire.jsword.book.BookDriver;

 import org.crosswire.jsword.book.basic.AbstractBookDriver;

 /**

  * A driver for the readings dictionary.

  * 

  * @see gnu.lgpl.License The GNU Lesser General Public License for details.

  * @author Joe Walker

  */

 public class ReadingsBookDriver extends AbstractBookDriver {

     /**

      * Setup the array of BookMetaDatas

      */

     public ReadingsBookDriver() {

         List<Book> bookList = new ArrayList<Book>();

         String[] installedBooks = getInstalledReadingsSets();

         for (int i = 0; i < installedBooks.length; i++) {

             bookList.add(new ReadingsBook(this, installedBooks[i], BookCategory.DAILY_DEVOTIONS));

         }

         books = bookList.toArray(new Book[bookList.size()]);

     }

     /*

      * (non-Javadoc)

      * 

      * @see org.crosswire.jsword.book.BookDriver#getBooks()

      */

     public Book[] getBooks() {

         return books == null ? null : (Book[]) books.clone();

     }

     /*

      * (non-Javadoc)

      * 

      * @see org.crosswire.jsword.book.BookDriver#getDriverName()

      */

     public String getDriverName() {

         return "Readings";

     }

     /**

      * Get the singleton instance of this driver.

      * 

      * @return this driver instance

      */

     public static BookDriver instance() {

         return INSTANCE;

     }

     /**

      * Get a list of the available readings sets

      *

      * @return all the installed reading sets

      */

     public String[] getInstalledReadingsSets() {

         try {

             URL index = ResourceUtil.getResource(ReadingsBookDriver.class, "readings.txt");

             return NetUtil.listByIndexFile(NetUtil.toURI(index), new ReadingsFilter());

         } catch (IOException ex) {

             return new String[0];

         }

     }

     /**

      * Get all files mentioned by readings.txt

      */

     static final class ReadingsFilter implements URIFilter {

         public boolean accept(String name) {

             return true;

         }

     }

     /**

      * The meta data array

      */

     private Book[] books;

     /**

      * Resources subdir for readings sets

      */

     public static final String DIR_READINGS = "readings";

     /**

      * A shared instance of this driver.

      */

     private static final BookDriver INSTANCE = new ReadingsBookDriver();

 }