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Java > Open Source Codes > org > apache > fop > viewer > SecureResourceBundle


1 /*
2  * $Id: SecureResourceBundle.java,v 1.4.2.2 2003/02/25 15:25:16 jeremias Exp $
3  * ============================================================================
4  * The Apache Software License, Version 1.1
5  * ============================================================================
6  *
7  * Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without modifica-
10  * tion, are permitted provided that the following conditions are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright notice,
13  * this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright notice,
16  * this list of conditions and the following disclaimer in the documentation
17  * and/or other materials provided with the distribution.
18  *
19  * 3. The end-user documentation included with the redistribution, if any, must
20  * include the following acknowledgment: "This product includes software
21  * developed by the Apache Software Foundation (http://www.apache.org/)."
22  * Alternately, this acknowledgment may appear in the software itself, if
23  * and wherever such third-party acknowledgments normally appear.
24  *
25  * 4. The names "FOP" and "Apache Software Foundation" must not be used to
26  * endorse or promote products derived from this software without prior
27  * written permission. For written permission, please contact
28  * apache@apache.org.
29  *
30  * 5. Products derived from this software may not be called "Apache", nor may
31  * "Apache" appear in their name, without prior written permission of the
32  * Apache Software Foundation.
33  *
34  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
35  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
36  * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
37  * APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
38  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
39  * DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
40  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
41  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
42  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
43  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
44  * ============================================================================
45  *
46  * This software consists of voluntary contributions made by many individuals
47  * on behalf of the Apache Software Foundation and was originally created by
48  * James Tauber <jtauber@jtauber.com>. For more information on the Apache
49  * Software Foundation, please see <http://www.apache.org/>.
50  */
51 package org.apache.fop.viewer;
52
53 import java.util.*;
54 import org.apache.fop.messaging.MessageHandler;
55 import java.io.*;
56
57
58 /**
59  * Die Klasse <code>SecureResourceBundle</code> ist ein Resourceundle, das im Falle eines fehlenden
60  * Eintrages keinen Absturz verursacht, sondern die Meldung
61  * <strong>Key <i>key</i> not found</strong> zurückgibt.
62  *
63  * @author Stanislav.Gorkhover@jCatalog.com
64  * @version 1.0 18.03.1999
65  */
66 public class SecureResourceBundle extends ResourceBundle
67     implements Translator {
68
69     // Fehlende keys mit einer Meldung zurückgeben.
70 private boolean isMissingEmphasized = false;
71
72     // private Properties lookup = new Properties();
73 private LoadableProperties lookup = new LoadableProperties();
74
75     private boolean isSourceFound = true;
76
77     public void setMissingEmphasized(boolean flag) {
78         isMissingEmphasized = flag;
79     }
80
81     /**
82      * Kreiert ein ResourceBundle mit der Quelle in <strong>in</strong>.
83      */
84
85     public SecureResourceBundle(InputStream in) {
86         try {
87             lookup.load(in);
88         } catch (Exception JavaDoc ex) {
89             MessageHandler.logln("Exception catched: " + ex.getMessage());
90             isSourceFound = false;
91         }
92     }
93
94
95
96     public Enumeration getKeys() {
97         return lookup.keys();
98     }
99
100
101
102     /**
103      * Händelt den abgefragten Key, liefert entweder den zugehörigen Wert oder eine Meldung.
104      * Die <strong>null</strong> wird nie zurückgegeben.
105      * Schreibt die fehlenden Suchschlüssel in die Protokoll-Datei.
106      * @return <code>Object</code><UL>
107      * <LI>den zu dem Suchschlüssel <strong>key</strong> gefundenen Wert, falls vorhanden, <br>
108      * <LI>Meldung <strong>Key <i>key</i> not found</strong>, falls der Suchschlüssel fehlt
109      * und die Eigenschaft "jCatalog.DevelopmentStartModus" in der ini-Datei aus true gesetzt ist.
110      * <LI>Meldung <strong>Key is null</strong>, falls der Suchschlüssel <code>null</code> ist.
111      * </UL>
112      *
113      */
114     public Object JavaDoc handleGetObject(String JavaDoc key) {
115
116         if (key == null)
117             return "Key is null";
118
119         Object JavaDoc obj = lookup.get(key);
120         if (obj != null)
121             return obj;
122         else {
123             if (isMissingEmphasized) {
124                 MessageHandler.logln(getClass().getName() + ": missing key: "
125                                      + key);
126                 return getMissedRepresentation(key.toString());
127             } else
128                 return key.toString();
129         }
130     }
131
132     /**
133      * Stellt fest, ob es den Key gibt.
134      */
135     public boolean contains(String JavaDoc key) {
136         return (key == null || lookup.get(key) == null) ? false : true;
137     }
138
139
140     private String JavaDoc getMissedRepresentation(String JavaDoc str) {
141         return "<!" + str + "!>";
142     }
143
144     public boolean isSourceFound() {
145         return isSourceFound;
146     }
147
148 }
149
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