KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > apache > tapestry > wml > WMLCharacterTranslatorSource


1 // Copyright 2004, 2005 The Apache Software Foundation
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 package org.apache.tapestry.wml;
16
17 import org.apache.tapestry.util.text.AsciiCharacterMatcher;
18 import org.apache.tapestry.util.text.AsciiCharacterTranslator;
19 import org.apache.tapestry.util.text.ICharacterMatcher;
20 import org.apache.tapestry.util.text.ICharacterTranslator;
21 import org.apache.tapestry.util.text.ICharacterTranslatorSource;
22 import org.apache.tapestry.util.text.MarkupCharacterTranslator;
23
24 /**
25  * The WML implementation of a character translator source.
26  * Returns a WML translator that encodes everything that is non-safe.
27  *
28  * Some code borrowed from WMLWriter (by David Solis)
29  *
30  * @author mb
31  * @since 4.0
32  */
33 public class WMLCharacterTranslatorSource implements ICharacterTranslatorSource
34 {
35     private static final String JavaDoc SAFE_CHARACTERS =
36         "01234567890"
37             + "abcdefghijklmnopqrstuvwxyz"
38             + "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
39             + "\t\n\r !\"#%'()*+,-./:;=?@[\\]^_`{|}~";
40
41     private static final String JavaDoc[][] ENTITIES = {
42             { "\"", """ },
43             { "<", "&lt;" },
44             { ">", "&gt;" },
45             { "&", "&amp;" },
46             { "$", "$$" }
47         };
48
49     private static final ICharacterMatcher SAFE_MATCHER = new AsciiCharacterMatcher(SAFE_CHARACTERS);
50     private static final ICharacterTranslator ENTITY_TRANSLATOR = new AsciiCharacterTranslator(ENTITIES);
51
52     private static final ICharacterTranslator WML_TRANSLATOR = new MarkupCharacterTranslator(true, SAFE_MATCHER, ENTITY_TRANSLATOR);
53
54     /**
55      * @see org.apache.tapestry.util.text.ICharacterTranslatorSource#getDefaultTranslator()
56      */
57     public ICharacterTranslator getDefaultTranslator() {
58         return WML_TRANSLATOR;
59     }
60
61     /**
62      * @see org.apache.tapestry.util.text.ICharacterTranslatorSource#getTranslator(java.lang.String)
63      */
64     public ICharacterTranslator getTranslator(String JavaDoc encoding) {
65         return getDefaultTranslator();
66     }
67 }
68
Popular Tags