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Java > Open Source Codes > org > jpublish > template > TemplateContentSource


1 /*--
2
3  Copyright (C) 2001-2003 Aetrion LLC.
4  All rights reserved.
5  
6  Redistribution and use in source and binary forms, with or without
7  modification, are permitted provided that the following conditions
8  are met:
9  
10  1. Redistributions of source code must retain the above copyright
11     notice, this list of conditions, and the following disclaimer.
12  
13  2. Redistributions in binary form must reproduce the above copyright
14     notice, this list of conditions, and the disclaimer that follows
15     these conditions in the documentation and/or other materials
16     provided with the distribution.
17
18  3. The name "JPublish" must not be used to endorse or promote products
19     derived from this software without prior written permission. For
20     written permission, please contact info@aetrion.com.
21  
22  4. Products derived from this software may not be called "JPublish", nor
23     may "JPublish" appear in their name, without prior written permission
24     from Aetrion LLC (info@aetrion.com).
25  
26  In addition, the authors of this software request (but do not require)
27  that you include in the end-user documentation provided with the
28  redistribution and/or in the software itself an acknowledgement equivalent
29  to the following:
30      "This product includes software developed by
31       Aetrion LLC (http://www.aetrion.com/)."
32
33  THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
34  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
35  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
36  DISCLAIMED. IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT,
37  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
38  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
39  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
40  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
41  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
42  IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
43  POSSIBILITY OF SUCH DAMAGE.
44
45  For more information on JPublish, please see <http://www.jpublish.org/>.
46  
47  */
48
49 package org.jpublish.template;
50
51 import java.io.*;
52
53 import org.jpublish.util.encoding.CharacterEncodingManager;
54 import org.jpublish.util.encoding.CharacterEncodingMap;
55 import org.jpublish.view.ContentSource;
56
57 /**
58  * Implementation of the ContentSource interface which provides content from a Template.
59  *
60  * @author Anthony Eden
61  */
62
63 public class TemplateContentSource implements ContentSource {
64
65     private TemplateManager templateManager = null;
66     private String JavaDoc path = null;
67
68     /**
69      * Construct a new TemplateContentSource.
70      *
71      * @param templateManager The TemplateManager
72      * @param path The path to the template
73      */
74
75     public TemplateContentSource(TemplateManager templateManager, String JavaDoc path) {
76         this.templateManager = templateManager;
77         this.path = path;
78     }
79
80     /**
81      * Get the last modified time for the content defined by this content source.
82      *
83      * @return The last modified time
84      * @throws IOException
85      */
86
87     public long getLastModified() throws IOException {
88         return templateManager.getLastModified(path);
89     }
90
91     /**
92      * Get an InputStream for reading the content data.
93      *
94      * @return The content InputStream
95      * @throws IOException
96      */
97
98     public InputStream getInputStream() throws IOException {
99         try {
100             Template template = templateManager.getTemplate(path);
101             CharacterEncodingManager characterEncodingManager =
102                     templateManager.getSiteContext().getCharacterEncodingManager();
103             CharacterEncodingMap characterEncodingMap =
104                     characterEncodingManager.getMap(path);
105             return new ByteArrayInputStream(template.getText().getBytes(characterEncodingMap.getTemplateEncoding()));
106             //return new ByteArrayInputStream(template.getText().getBytes("UTF-8"));
107 } catch (Exception JavaDoc e) {
108             throw new IOException("Error getting stream: " + e);
109         }
110     }
111
112     /**
113      * Get a Reader for the content defined by this content source.
114      *
115      * @return A Reader
116      * @throws IOException
117      */
118
119     public Reader getReader() throws IOException {
120         try {
121             Template template = templateManager.getTemplate(path);
122             return new StringReader(template.getText());
123         } catch (Exception JavaDoc e) {
124             throw new IOException("Error getting reader: " + e);
125         }
126     }
127
128     /**
129      * Get a Reader for the content defined by this content source. The Reader will be constructed using the given
130      * character encoding.
131      *
132      * @param encoding The character encoding
133      * @return A Reader
134      * @throws IOException
135      */
136
137     public Reader getReader(String JavaDoc encoding) throws IOException {
138         try {
139             Template template = templateManager.getTemplate(path);
140             byte[] data = template.getText().getBytes();
141             String JavaDoc encodedString = new String JavaDoc(data, encoding);
142             return new StringReader(encodedString);
143         } catch (Exception JavaDoc e) {
144             throw new IOException("Error getting reader: " + e);
145         }
146     }
147
148 }
149
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