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Java > Open Source Codes > net > sourceforge > groboutils > util > io > v1 > HashtableInputStreamGenerator


1 /*
2  * @(#)HashtableInputStreamGenerator.java
3  *
4  * Copyright (C) 2001,2003 Matt Albrecht
5  * groboclown@users.sourceforge.net
6  * http://groboutils.sourceforge.net
7  *
8  * Permission is hereby granted, free of charge, to any person obtaining a
9  * copy of this software and associated documentation files (the "Software"),
10  * to deal in the Software without restriction, including without limitation
11  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
12  * and/or sell copies of the Software, and to permit persons to whom the
13  * Software is furnished to do so, subject to the following conditions:
14  *
15  * The above copyright notice and this permission notice shall be included in
16  * all copies or substantial portions of the Software.
17  *
18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
21  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
22  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
23  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
24  * DEALINGS IN THE SOFTWARE.
25  */
26
27 package net.sourceforge.groboutils.util.io.v1;
28
29 import java.io.InputStream JavaDoc;
30 import java.io.IOException JavaDoc;
31 import java.util.Hashtable JavaDoc;
32 import java.io.ByteArrayInputStream JavaDoc;
33
34
35
36 /**
37  * A type of class which can generate a new InputStream based on a entry
38  * in a Hashtable. It will create a StringBufferInputStream based on the
39  * <tt>toString</tt> of the data.
40  *
41  * @author Matt Albrecht <a HREF="mailto:groboclown@users.sourceforge.net">groboclown@users.sourceforge.net</a>
42  * @since 0.9.1d (sometime in 2001)
43  * @version $Date: 2003/02/10 22:52:45 $
44  */
45 public class HashtableInputStreamGenerator implements IInputStreamGenerator
46 {
47     private Hashtable JavaDoc map;
48     private String JavaDoc orig;
49     
50     /**
51      * Accepts the name of the 1st file loaded. All files generated from
52      * this generator will be relative to its location.
53      */
54     public HashtableInputStreamGenerator( Hashtable JavaDoc map )
55     {
56         this.map = map;
57     }
58     
59     
60     public String JavaDoc getFullName( String JavaDoc relativeName )
61     {
62         return relativeName;
63     }
64     
65     
66     public InputStream JavaDoc createInputStream( String JavaDoc relativeName )
67             throws IOException JavaDoc
68     {
69         if (relativeName == null)
70         {
71             throw new IOException JavaDoc("null name");
72         }
73         
74         Object JavaDoc o = this.map.get( relativeName );
75         if (o == null)
76         {
77             throw new IOException JavaDoc("resource '"+relativeName+"' does not exist");
78         }
79         
80         return new ByteArrayInputStream JavaDoc( o.toString().getBytes() );
81     }
82 }
83
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