1 package org.apache.velocity.runtime.resource;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import java.io.StringWriter;
23 import java.io.BufferedReader;
24 import java.io.InputStreamReader;
25
26 import org.apache.velocity.exception.ResourceNotFoundException;
27
28 /**
29 * This class represent a general text resource that may have been
30 * retrieved from any number of possible sources.
31 *
32 * Also of interest is Velocity's {@link org.apache.velocity.Template}
33 * <code>Resource</code>.
34 *
35 * @author <a href="mailto:jvanzyl@apache.org">Jason van Zyl</a>
36 * @author <a href="mailto:geirm@optonline.net">Geir Magnusson Jr.</a>
37 * @version $Id: ContentResource.java 463298 2006-10-12 16:10:32Z henning $
38 */
39 public class ContentResource extends Resource
40 {
41 /** Default empty constructor */
42 public ContentResource()
43 {
44 }
45
46 /**
47 * Pull in static content and store it.
48 * @return True if everything went ok.
49 *
50 * @exception ResourceNotFoundException Resource could not be
51 * found.
52 */
53 public boolean process()
54 throws ResourceNotFoundException
55 {
56 BufferedReader reader = null;
57
58 try
59 {
60 StringWriter sw = new StringWriter();
61
62 reader = new BufferedReader(
63 new InputStreamReader(resourceLoader.getResourceStream(name),
64 encoding));
65
66 char buf[] = new char[1024];
67 int len = 0;
68
69 while ( ( len = reader.read( buf, 0, 1024 )) != -1)
70 sw.write( buf, 0, len );
71
72 setData(sw.toString());
73
74 return true;
75 }
76 catch ( ResourceNotFoundException e )
77 {
78 // Tell the ContentManager to continue to look through any
79 // remaining configured ResourceLoaders.
80 throw e;
81 }
82 catch ( Exception e )
83 {
84 rsvc.getLog().error("Cannot process content resource", e);
85 return false;
86 }
87 finally
88 {
89 if (reader != null)
90 {
91 try
92 {
93 reader.close();
94 }
95 catch (Exception ignored)
96 {
97 }
98 }
99 }
100 }
101 }