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18  * GNU Lesser General Public License version 3 for more details
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27 
28 package com.sun.star.comp.helper;
29 
30 import java.net.MalformedURLException;
31 import java.net.URL;
32 import java.net.URLClassLoader;
33 
34 /**
35  * UnoInfo offers functionality to obtain the UNO jar files.
36  */
37 public final class UnoInfo {
38 
39     /**
40      * do not instantiate
41      */
42     private UnoInfo() {}
43 
44     /**
45      * Gets the URL base.
46      *
47      * @return the URL base
48      */
49     private static String getBase() {
50 
51         final String JUHJAR = "/juh.jar";
52 
53         String base = null;
54 
55         URLClassLoader cl = (URLClassLoader) UnoInfo.class.getClassLoader();
56         URL[] urls = cl.getURLs();
57         for ( int i = 0; i < urls.length; i++ ) {
58             String url = urls[i].toString();
59             if ( url.endsWith( JUHJAR ) )
60             {
61                 int index = url.lastIndexOf( JUHJAR );
62                 if ( index >= 0 ) {
63                     base = url.substring( 0, index + 1 );
64                     break;
65                 }
66             }
67         }
68 
69         return base;
70     }
71 
72     /**
73      * Gets a list of URLs for the given jar files.
74      *
75      * @return the list of URLs
76      */
77     private static URL[] getURLs( String[] jarFileNames ) {
78 
79         URL[] jars = new URL[jarFileNames.length];
80         String base = getBase();
81         for ( int i = 0; i < jarFileNames.length; i++ ) {
82             try {
83                 jars[i] = new URL( base + jarFileNames[i] );
84             } catch ( MalformedURLException e ) {
85                 return null;
86             }
87         }
88 
89         return jars;
90     }
91 
92     /**
93      * Gets the UNO jar files.
94      *
95      * @return the UNO jar files
96      */
97     public static URL[] getJars() {
98 
99         String[] jarFileNames = new String[] {
100             "jurt.jar",
101             "ridl.jar",
102             "juh.jar" };
103 
104         return getURLs( jarFileNames );
105     }
106 
107     /**
108      * Gets the extra UNO types.
109      *
110      * @return the extra UNO types
111      */
112     public static URL[] getExtraTypes() {
113         return new URL[0];
114     }
115 }
116