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30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
InitialClassLoader.java | 0% | 0% | 0% | 0% |
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package org.codehaus.classworlds.uberjar.boot;
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/*
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$Id: InitialClassLoader.java,v 1.1.1.1 2004/07/01 13:59:19 jvanzyl Exp $
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Copyright 2002 (C) The Werken Company. All Rights Reserved.
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Redistribution and use of this software and associated documentation
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("Software"), with or without modification, are permitted provided
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that the following conditions are met:
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1. Redistributions of source code must retain copyright
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statements and notices. Redistributions must also contain a
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copy of this document.
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2. Redistributions in binary form must reproduce the
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above copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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3. The name "classworlds" must not be used to endorse or promote
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products derived from this Software without prior written
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permission of The Werken Company. For written permission,
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please contact bob@werken.com.
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4. Products derived from this Software may not be called "classworlds"
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nor may "classworlds" appear in their names without prior written
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permission of The Werken Company. "classworlds" is a registered
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trademark of The Werken Company.
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5. Due credit should be given to The Werken Company.
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(http://classworlds.werken.com/).
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THIS SOFTWARE IS PROVIDED BY THE WERKEN COMPANY AND CONTRIBUTORS
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``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
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NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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THE WERKEN COMPANY OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.net.URL;
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import java.security.SecureClassLoader;
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import java.util.Map;
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import java.util.HashMap;
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import java.util.jar.JarInputStream;
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import java.util.jar.JarEntry;
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/**
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* Initial bootstrapping <code>ClassLoader</code>.
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*
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* @author <a href="mailto:jason@zenplex.com">Jason van Zyl</a>
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* @author <a href="mailto:bob@eng.werken.com">bob mcwhirter</a>
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* @version $Id: InitialClassLoader.java,v 1.1.1.1 2004/07/01 13:59:19 jvanzyl Exp $
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*/
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public class InitialClassLoader |
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extends SecureClassLoader
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{ |
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// ----------------------------------------------------------------------
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// Instance members
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// ----------------------------------------------------------------------
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/**
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* Class index.
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*/
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private Map index;
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/**
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* Classworlds jar URL.
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*/
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private URL classworldsJarUrl;
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// ----------------------------------------------------------------------
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// Constructors
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// ----------------------------------------------------------------------
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/**
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* Construct.
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*
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* @throws Exception If an error occurs while attempting to perform
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* bootstrap initialization.
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*/
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public InitialClassLoader()
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throws Exception
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{ |
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this.index = new HashMap(); |
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ClassLoader cl = Thread.currentThread().getContextClassLoader(); |
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URL classUrl = getClass().getResource( "InitialClassLoader.class" );
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String urlText = classUrl.toExternalForm(); |
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int bangLoc = urlText.indexOf( "!" ); |
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System.setProperty( "classworlds.lib",
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urlText.substring( 0, |
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bangLoc ) + "!/WORLDS-INF/lib" );
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this.classworldsJarUrl = new URL( urlText.substring( 0, |
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bangLoc ) + "!/WORLDS-INF/classworlds.jar" );
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} |
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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/**
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* @see ClassLoader
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*/
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public synchronized Class findClass( String className ) |
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throws ClassNotFoundException
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{ |
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String classPath = className.replace( '.', |
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'/' ) + ".class";
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if ( this.index.containsKey( classPath ) ) |
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{ |
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return (Class) this.index.get( classPath ); |
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} |
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try
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{ |
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JarInputStream in = new JarInputStream( this.classworldsJarUrl.openStream() ); |
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try
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{ |
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JarEntry entry = null;
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while ( ( entry = in.getNextJarEntry() ) != null ) |
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{ |
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if ( entry.getName().equals( classPath ) )
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{ |
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ByteArrayOutputStream out = new ByteArrayOutputStream();
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try
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{ |
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byte[] buffer = new byte[2048]; |
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int read = 0;
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while ( in.available() > 0 )
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{ |
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read = in.read( buffer, |
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0, |
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buffer.length ); |
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if ( read < 0 )
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{ |
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break;
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} |
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out.write( buffer, |
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0, |
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read ); |
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} |
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buffer = out.toByteArray(); |
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Class cls = defineClass( className, |
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buffer, |
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0, |
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buffer.length ); |
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this.index.put( className,
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cls ); |
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return cls;
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} |
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finally
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{ |
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out.close(); |
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} |
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} |
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} |
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} |
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finally
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{ |
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in.close(); |
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} |
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} |
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catch ( IOException e )
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{ |
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e.printStackTrace(); |
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throw new ClassNotFoundException( "io error reading stream for: " + className ); |
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} |
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throw new ClassNotFoundException( className ); |
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} |
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} |
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