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Java > Open Source Codes > org > apache > velocity > runtime > directive > InputBase


1 package org.apache.velocity.runtime.directive;
2
3 /*
4  * Copyright 2000-2001,2004 The Apache Software Foundation.
5  *
6  * Licensed under the Apache License, Version 2.0 (the "License");
7  * you may not use this file except in compliance with the License.
8  * You may obtain a copy of the License at
9  *
10  * http://www.apache.org/licenses/LICENSE-2.0
11  *
12  * Unless required by applicable law or agreed to in writing, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  */
18
19 import org.apache.velocity.context.InternalContextAdapter;
20 import org.apache.velocity.runtime.RuntimeConstants;
21 import org.apache.velocity.runtime.resource.Resource;
22
23 /**
24  * Base class for directives which do input operations
25  * (e.g. <code>#include()</code>, <code>#parse()</code>, etc.).
26  *
27  * @author <a HREF="mailto:dlr@finemaltcoding.com">Daniel Rall</a>
28  * @since 1.4
29  */
30 public abstract class InputBase extends Directive
31 {
32     /**
33      * Decides the encoding used during input processing of this
34      * directive.
35      *
36      * Get the resource, and assume that we use the encoding of the
37      * current template the 'current resource' can be
38      * <code>null</code> if we are processing a stream....
39      *
40      * @param context The context to derive the default input encoding
41      * from.
42      * @return The encoding to use when processing this directive.
43      */
44     protected String JavaDoc getInputEncoding(InternalContextAdapter context)
45     {
46         Resource current = context.getCurrentResource();
47         if (current != null)
48         {
49             return current.getEncoding();
50         }
51         else
52         {
53             return (String JavaDoc) rsvc.getProperty(RuntimeConstants.INPUT_ENCODING);
54         }
55     }
56 }
57
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