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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 | |||||||||||||||
JarUrlConnection.java | 79.2% | 87.5% | 90% | 85.4% |
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package org.codehaus.classworlds.uberjar.protocol.jar;
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/*
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$Id: JarUrlConnection.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 org.codehaus.classworlds.UrlUtils;
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import java.io.IOException;
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import java.io.InputStream;
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import java.net.JarURLConnection;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.net.URLDecoder;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.StringTokenizer;
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import java.util.jar.JarEntry;
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import java.util.jar.JarFile;
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import java.util.jar.JarInputStream;
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/**
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* <code>URLConnection</code> capable of handling multiply-nested jars.
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*
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* @author <a href="mailto:bob@eng.werken.com">bob mcwhirter</a>
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* @version $Id: JarUrlConnection.java,v 1.1.1.1 2004/07/01 13:59:19 jvanzyl Exp $
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*/
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public class JarUrlConnection |
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extends JarURLConnection
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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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* Base resource.
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*/
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private URL baseResource;
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/**
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* Additional nested segments.
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*/
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private String[] segments;
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/**
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* Terminal input-stream.
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*/
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private InputStream in;
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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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* @param url Target URL of the connections.
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* @throws java.io.IOException If an error occurs while attempting to initialize
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* the connection.
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*/
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JarUrlConnection( URL url ) |
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throws IOException
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{ |
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super( url = normaliseURL( url ) );
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String baseText = url.getPath(); |
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int bangLoc = baseText.indexOf( "!" ); |
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String baseResourceText = baseText.substring( 0, bangLoc ); |
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String extraText = "";
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if ( bangLoc <= ( baseText.length() - 2 )
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&& |
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baseText.charAt( bangLoc + 1 ) == '/' ) |
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{ |
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if ( bangLoc + 2 == baseText.length() )
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{ |
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extraText = "";
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} |
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else
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{ |
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extraText = baseText.substring( bangLoc + 1 ); |
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} |
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} |
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else
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{ |
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throw new MalformedURLException( "No !/ in url: " + url.toExternalForm() ); |
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} |
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List segments = new ArrayList();
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StringTokenizer tokens = new StringTokenizer( extraText, "!" ); |
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while ( tokens.hasMoreTokens() )
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{ |
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segments.add( tokens.nextToken() ); |
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} |
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this.segments = (String[]) segments.toArray( new String[segments.size()] ); |
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this.baseResource = new URL( baseResourceText ); |
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} |
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protected static URL normaliseURL( URL url ) throws MalformedURLException |
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{ |
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String text = UrlUtils.normalizeUrlPath( url.toString() ); |
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if ( !text.startsWith( "jar:" ) ) |
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{ |
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text = "jar:" + text;
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} |
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if ( text.indexOf( '!' ) < 0 )
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{ |
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text = text + "!/";
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} |
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return new URL( text ); |
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} |
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// ----------------------------------------------------------------------
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// Instance methods
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// ----------------------------------------------------------------------
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/**
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* Retrieve the nesting path segments.
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*
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* @return The segments.
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*/
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protected String[] getSegments()
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{ |
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return this.segments; |
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} |
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/**
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* Retrieve the base resource <code>URL</code>.
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*
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* @return The base resource url.
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*/
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protected URL getBaseResource()
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{ |
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return this.baseResource; |
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} |
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/**
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* @see java.net.URLConnection
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*/
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public void connect() |
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throws IOException
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{ |
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if ( this.segments.length == 0 ) |
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{ |
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setupBaseResourceInputStream(); |
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} |
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else
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{ |
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setupPathedInputStream(); |
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} |
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} |
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/**
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* Setup the <code>InputStream</code> purely from the base resource.
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*
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* @throws java.io.IOException If an I/O error occurs.
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*/
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protected void setupBaseResourceInputStream() |
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throws IOException
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{ |
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this.in = getBaseResource().openStream();
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} |
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/**
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* Setup the <code>InputStream</code> for URL with nested segments.
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*
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* @throws java.io.IOException If an I/O error occurs.
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*/
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protected void setupPathedInputStream() |
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throws IOException
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{ |
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InputStream curIn = getBaseResource().openStream(); |
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for ( int i = 0; i < this.segments.length; ++i ) |
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{ |
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curIn = getSegmentInputStream( curIn, |
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segments[i] ); |
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} |
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this.in = curIn;
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} |
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/**
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* Retrieve the <code>InputStream</code> for the nesting
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* segment relative to a base <code>InputStream</code>.
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*
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* @param baseIn The base input-stream.
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* @param segment The nesting segment path.
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* @return The input-stream to the segment.
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* @throws java.io.IOException If an I/O error occurs.
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*/
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protected InputStream getSegmentInputStream( InputStream baseIn,
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String segment ) |
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throws IOException
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{ |
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JarInputStream jarIn = new JarInputStream( baseIn );
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JarEntry entry = null;
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while ( jarIn.available() != 0 )
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{ |
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entry = jarIn.getNextJarEntry(); |
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if ( entry == null ) |
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{ |
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break;
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} |
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if ( ( "/" + entry.getName() ).equals( segment ) ) |
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{ |
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return jarIn;
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} |
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} |
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throw new IOException( "unable to locate segment: " + segment ); |
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} |
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/**
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* @see java.net.URLConnection
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*/
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public InputStream getInputStream()
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throws IOException
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{ |
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if ( this.in == null ) |
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{ |
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connect(); |
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} |
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return this.in; |
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} |
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/**
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* @return JarFile
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* @throws java.io.IOException
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* @see java.net.JarURLConnection#getJarFile()
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*/
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288 | 0 |
public JarFile getJarFile() throws IOException |
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{ |
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290 | 0 |
String url = baseResource.toExternalForm(); |
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292 | 0 |
if ( url.startsWith( "file:/" ) ) |
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{ |
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url = url.substring( 6 ); |
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} |
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return new JarFile( URLDecoder.decode( url, "UTF-8" ) ); |
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} |
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} |
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