javaunohelper/com/sun/star/comp/helper/UnoInfo.java

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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 }