Clover coverage report - classworlds - 1.1-alpha-1
Coverage timestamp: Sun Sep 19 2004 14:08:44 EDT
file stats: LOC: 199   Methods: 2
NCLOC: 94   Classes: 1
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 Source file Conditionals Statements Methods TOTAL
InitialClassLoader.java 0% 0% 0% 0%
coverage
 1   
 package org.codehaus.classworlds.uberjar.boot;
 2   
 
 3   
 /*
 4   
  $Id: InitialClassLoader.java,v 1.1.1.1 2004/07/01 13:59:19 jvanzyl Exp $
 5   
 
 6   
  Copyright 2002 (C) The Werken Company. All Rights Reserved.
 7   
  
 8   
  Redistribution and use of this software and associated documentation
 9   
  ("Software"), with or without modification, are permitted provided
 10   
  that the following conditions are met:
 11   
 
 12   
  1. Redistributions of source code must retain copyright
 13   
     statements and notices.  Redistributions must also contain a
 14   
     copy of this document.
 15   
  
 16   
  2. Redistributions in binary form must reproduce the
 17   
     above copyright notice, this list of conditions and the
 18   
     following disclaimer in the documentation and/or other
 19   
     materials provided with the distribution.
 20   
  
 21   
  3. The name "classworlds" must not be used to endorse or promote
 22   
     products derived from this Software without prior written
 23   
     permission of The Werken Company.  For written permission,
 24   
     please contact bob@werken.com.
 25   
  
 26   
  4. Products derived from this Software may not be called "classworlds"
 27   
     nor may "classworlds" appear in their names without prior written
 28   
     permission of The Werken Company. "classworlds" is a registered
 29   
     trademark of The Werken Company.
 30   
  
 31   
  5. Due credit should be given to The Werken Company.
 32   
     (http://classworlds.werken.com/).
 33   
  
 34   
  THIS SOFTWARE IS PROVIDED BY THE WERKEN COMPANY AND CONTRIBUTORS
 35   
  ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
 36   
  NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 37   
  FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
 38   
  THE WERKEN COMPANY OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 39   
  INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 40   
  (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 41   
  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 42   
  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 43   
  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 44   
  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 45   
  OF THE POSSIBILITY OF SUCH DAMAGE.
 46   
  
 47   
  */
 48   
 
 49   
 import java.io.ByteArrayOutputStream;
 50   
 import java.io.IOException;
 51   
 import java.net.URL;
 52   
 import java.security.SecureClassLoader;
 53   
 import java.util.Map;
 54   
 import java.util.HashMap;
 55   
 import java.util.jar.JarInputStream;
 56   
 import java.util.jar.JarEntry;
 57   
 
 58   
 /**
 59   
  * Initial bootstrapping <code>ClassLoader</code>.
 60   
  *
 61   
  * @author <a href="mailto:jason@zenplex.com">Jason van Zyl</a>
 62   
  * @author <a href="mailto:bob@eng.werken.com">bob mcwhirter</a>
 63   
  * @version $Id: InitialClassLoader.java,v 1.1.1.1 2004/07/01 13:59:19 jvanzyl Exp $
 64   
  */
 65   
 public class InitialClassLoader
 66   
     extends SecureClassLoader
 67   
 {
 68   
     // ----------------------------------------------------------------------
 69   
     //     Instance members
 70   
     // ----------------------------------------------------------------------
 71   
 
 72   
     /**
 73   
      * Class index.
 74   
      */
 75   
     private Map index;
 76   
 
 77   
     /**
 78   
      * Classworlds jar URL.
 79   
      */
 80   
     private URL classworldsJarUrl;
 81   
 
 82   
     // ----------------------------------------------------------------------
 83   
     //     Constructors
 84   
     // ----------------------------------------------------------------------
 85   
 
 86   
     /**
 87   
      * Construct.
 88   
      *
 89   
      * @throws Exception If an error occurs while attempting to perform
 90   
      *                   bootstrap initialization.
 91   
      */
 92  0
     public InitialClassLoader()
 93   
         throws Exception
 94   
     {
 95  0
         this.index = new HashMap();
 96   
 
 97  0
         ClassLoader cl = Thread.currentThread().getContextClassLoader();
 98   
 
 99  0
         URL classUrl = getClass().getResource( "InitialClassLoader.class" );
 100   
 
 101  0
         String urlText = classUrl.toExternalForm();
 102   
 
 103  0
         int bangLoc = urlText.indexOf( "!" );
 104   
 
 105  0
         System.setProperty( "classworlds.lib",
 106   
                             urlText.substring( 0,
 107   
                                                bangLoc ) + "!/WORLDS-INF/lib" );
 108   
 
 109  0
         this.classworldsJarUrl = new URL( urlText.substring( 0,
 110   
                                                              bangLoc ) + "!/WORLDS-INF/classworlds.jar" );
 111   
     }
 112   
 
 113   
     // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
 114   
     // - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 
 115   
 
 116   
     /**
 117   
      * @see ClassLoader
 118   
      */
 119  0
     public synchronized Class findClass( String className )
 120   
         throws ClassNotFoundException
 121   
     {
 122  0
         String classPath = className.replace( '.',
 123   
                                               '/' ) + ".class";
 124   
 
 125  0
         if ( this.index.containsKey( classPath ) )
 126   
         {
 127  0
             return (Class) this.index.get( classPath );
 128   
         }
 129   
 
 130  0
         try
 131   
         {
 132  0
             JarInputStream in = new JarInputStream( this.classworldsJarUrl.openStream() );
 133   
 
 134  0
             try
 135   
             {
 136  0
                 JarEntry entry = null;
 137   
 
 138  0
                 while ( ( entry = in.getNextJarEntry() ) != null )
 139   
                 {
 140  0
                     if ( entry.getName().equals( classPath ) )
 141   
                     {
 142  0
                         ByteArrayOutputStream out = new ByteArrayOutputStream();
 143   
 
 144  0
                         try
 145   
                         {
 146  0
                             byte[] buffer = new byte[2048];
 147   
 
 148  0
                             int read = 0;
 149   
 
 150  0
                             while ( in.available() > 0 )
 151   
                             {
 152  0
                                 read = in.read( buffer,
 153   
                                                 0,
 154   
                                                 buffer.length );
 155   
 
 156  0
                                 if ( read < 0 )
 157   
                                 {
 158  0
                                     break;
 159   
                                 }
 160   
 
 161  0
                                 out.write( buffer,
 162   
                                            0,
 163   
                                            read );
 164   
                             }
 165   
 
 166  0
                             buffer = out.toByteArray();
 167   
 
 168  0
                             Class cls = defineClass( className,
 169   
                                                      buffer,
 170   
                                                      0,
 171   
                                                      buffer.length );
 172   
 
 173  0
                             this.index.put( className,
 174   
                                             cls );
 175   
 
 176  0
                             return cls;
 177   
                         }
 178   
                         finally
 179   
                         {
 180  0
                             out.close();
 181   
                         }
 182   
                     }
 183   
                 }
 184   
             }
 185   
             finally
 186   
             {
 187  0
                 in.close();
 188   
             }
 189   
         }
 190   
         catch ( IOException e )
 191   
         {
 192  0
             e.printStackTrace();
 193  0
             throw new ClassNotFoundException( "io error reading stream for: " + className );
 194   
         }
 195   
 
 196  0
         throw new ClassNotFoundException( className );
 197   
     }
 198   
 }
 199