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

   1 /*************************************************************************
   2  *
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * Copyright 2008 by Sun Microsystems, Inc.
   6  *
   7  * OpenOffice.org - a multi-platform office productivity suite
   8  *
   9  * $RCSfile: UnoInfo.java,v $
  10  * $Revision: 1.8 $
  11  *
  12  * This file is part of OpenOffice.org.
  13  *
  14  * OpenOffice.org is free software: you can redistribute it and/or modify
  15  * it under the terms of the GNU Lesser General Public License version 3
  16  * only, as published by the Free Software Foundation.
  17  *
  18  * OpenOffice.org is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU Lesser General Public License version 3 for more details
  22  * (a copy is included in the LICENSE file that accompanied this code).
  23  *
  24  * You should have received a copy of the GNU Lesser General Public License
  25  * version 3 along with OpenOffice.org.  If not, see
  26  * <http://www.openoffice.org/license.html>
  27  * for a copy of the LGPLv3 License.
  28  *
  29  ************************************************************************/
  30
  31 package com.sun.star.comp.helper;
  32
  33 import java.net.MalformedURLException;
  34 import java.net.URL;
  35 import java.net.URLClassLoader;
  36
  37 /**
  38  * UnoInfo offers functionality to obtain the UNO jar files.
  39  */
  40 public final class UnoInfo {
  41
  42     /**
  43      * do not instantiate
  44      */
  45     private UnoInfo() {}
  46
  47     /**
  48      * Gets the URL base.
  49      *
  50      * @return the URL base
  51      */
  52     private static String getBase() {
  53
  54         final String JUHJAR = "/juh.jar";
  55
  56         String base = null;
  57
  58         URLClassLoader cl = (URLClassLoader) UnoInfo.class.getClassLoader();
  59         URL[] urls = cl.getURLs();
  60         for ( int i = 0; i < urls.length; i++ ) {
  61             String url = urls[i].toString();
  62             if ( url.endsWith( JUHJAR ) )
  63             {
  64                 int index = url.lastIndexOf( JUHJAR );
  65                 if ( index >= 0 ) {
  66                     base = url.substring( 0, index + 1 );
  67                     break;
  68                 }
  69             }
  70         }
  71
  72         return base;
  73     }
  74
  75     /**
  76      * Gets a list of URLs for the given jar files.
  77      *
  78      * @return the list of URLs
  79      */
  80     private static URL[] getURLs( String[] jarFileNames ) {
  81
  82         URL[] jars = new URL[jarFileNames.length];
  83         String base = getBase();
  84         for ( int i = 0; i < jarFileNames.length; i++ ) {
  85             try {
  86                 jars[i] = new URL( base + jarFileNames[i] );
  87             } catch ( MalformedURLException e ) {
  88                 return null;
  89             }
  90         }
  91
  92         return jars;
  93     }
  94
  95     /**
  96      * Gets the UNO jar files.
  97      *
  98      * @return the UNO jar files
  99      */
 100     public static URL[] getJars() {
 101
 102         String[] jarFileNames = new String[] {
 103             "jurt.jar",
 104             "ridl.jar",
 105             "juh.jar" };
 106
 107         return getURLs( jarFileNames );
 108     }
 109
 110     /**
 111      * Gets the extra UNO types.
 112      *
 113      * @return the extra UNO types
 114      */
 115     public static URL[] getExtraTypes() {
 116         return new URL[0];
 117     }
 118 }