1   /**
2    * Distribution License:
3    * JSword is free software; you can redistribute it and/or modify it under
4    * the terms of the GNU Lesser General Public License, version 2.1 as published by
5    * the Free Software Foundation. This program is distributed in the hope
6    * that it will be useful, but WITHOUT ANY WARRANTY; without even the
7    * implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
8    * See the GNU Lesser General Public License for more details.
9    *
10   * The License is available on the internet at:
11   *       http://www.gnu.org/copyleft/lgpl.html
12   * or by writing to:
13   *      Free Software Foundation, Inc.
14   *      59 Temple Place - Suite 330
15   *      Boston, MA 02111-1307, USA
16   *
17   * Copyright: 2005
18   *     The copyright to this program is held by it's authors.
19   *
20   * ID: $Id: ReadingsBookDriver.java 2050 2010-12-09 15:31:45Z dmsmith $
21   */
22  package org.crosswire.jsword.book.readings;
23  
24  import java.io.IOException;
25  import java.net.URL;
26  import java.util.ArrayList;
27  import java.util.List;
28  
29  import org.crosswire.common.util.NetUtil;
30  import org.crosswire.common.util.ResourceUtil;
31  import org.crosswire.common.util.URIFilter;
32  import org.crosswire.jsword.book.Book;
33  import org.crosswire.jsword.book.BookCategory;
34  import org.crosswire.jsword.book.BookDriver;
35  import org.crosswire.jsword.book.basic.AbstractBookDriver;
36  
37  /**
38   * A driver for the readings dictionary.
39   * 
40   * @see gnu.lgpl.License for license details.<br>
41   *      The copyright to this program is held by it's authors.
42   * @author Joe Walker [joe at eireneh dot com]
43   */
44  public class ReadingsBookDriver extends AbstractBookDriver {
45      /**
46       * Setup the array of BookMetaDatas
47       */
48      public ReadingsBookDriver() {
49          List<Book> bookList = new ArrayList<Book>();
50          String[] installedBooks = getInstalledReadingsSets();
51          for (int i = 0; i < installedBooks.length; i++) {
52              bookList.add(new ReadingsBook(this, installedBooks[i], BookCategory.DAILY_DEVOTIONS));
53          }
54  
55          books = bookList.toArray(new Book[bookList.size()]);
56      }
57  
58      /*
59       * (non-Javadoc)
60       * 
61       * @see org.crosswire.jsword.book.BookDriver#getBooks()
62       */
63      public Book[] getBooks() {
64          return books == null ? null : (Book[]) books.clone();
65      }
66  
67      /*
68       * (non-Javadoc)
69       * 
70       * @see org.crosswire.jsword.book.BookDriver#getDriverName()
71       */
72      public String getDriverName() {
73          return "Readings";
74      }
75  
76      /**
77       * Get the singleton instance of this driver.
78       * 
79       * @return this driver instance
80       */
81      public static BookDriver instance() {
82          return INSTANCE;
83      }
84  
85      /**
86       * Get a list of the available readings sets
87       */
88      public String[] getInstalledReadingsSets() {
89          try {
90              URL index = ResourceUtil.getResource(ReadingsBookDriver.class, "readings.txt");
91              return NetUtil.listByIndexFile(NetUtil.toURI(index), new ReadingsFilter());
92          } catch (IOException ex) {
93              return new String[0];
94          }
95      }
96  
97      /**
98       * Get all files mentioned by readings.txt
99       */
100     static final class ReadingsFilter implements URIFilter {
101         public boolean accept(String name) {
102             return true;
103         }
104     }
105 
106     /**
107      * The meta data array
108      */
109     private Book[] books;
110 
111     /**
112      * Resources subdir for readings sets
113      */
114     public static final String DIR_READINGS = "readings";
115 
116     /**
117      * A shared instance of this driver.
118      */
119     private static final BookDriver INSTANCE = new ReadingsBookDriver();
120 }
121