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/* |
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* The Apache Software License, Version 1.1 |
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* |
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* Copyright (c) 2003 The Apache Software Foundation. All rights |
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* reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. The end-user documentation included with the redistribution, if |
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* any, must include the following acknowlegement: |
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* "This product includes software developed by the |
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* Apache Software Foundation (http://www.apache.org/)." |
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* Alternately, this acknowlegement may appear in the software itself, |
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* if and wherever such third-party acknowlegements normally appear. |
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* |
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* 4. The names "The Jakarta Project", "Ant", and "Apache Software |
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* Foundation" must not be used to endorse or promote products derived |
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* from this software without prior written permission. For written |
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* permission, please contact apache@apache.org. |
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* |
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* 5. Products derived from this software may not be called "Apache" |
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* nor may "Apache" appear in their names without prior written |
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* permission of the Apache Group. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This software consists of voluntary contributions made by many |
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* individuals on behalf of the Apache Software Foundation. For more |
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* information on the Apache Software Foundation, please see |
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* <http://www.apache.org/>. |
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*/ |
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package org.apache.tools.ant.taskdefs; |
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import org.apache.tools.ant.types.Path; |
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import org.apache.tools.ant.Task; |
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import org.apache.tools.ant.BuildException; |
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import org.apache.tools.ant.Project; |
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import org.apache.tools.ant.AntClassLoader; |
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import java.net.URL; |
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/** |
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* Find a class or resource on the supplied classpath, or the |
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* system classpath if none is supplied. The named property is set if |
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* the item can be found. For example |
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* <pre> |
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* <whichresource resource="/log4j.properties" |
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* property="log4j.url" > |
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* </pre> |
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* @author steve loughran while stuck in Enumclaw, WA, with a broken down car |
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*/ |
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public class WhichResource extends Task { |
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/** |
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* our classpath |
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*/ |
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private Path classpath; |
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/** |
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* class to look for |
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*/ |
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private String classname; |
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/** |
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* resource to look for |
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*/ |
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private String resource; |
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/** |
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* property to set |
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*/ |
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private String property; |
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/** |
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* Set the classpath to be used for this compilation. |
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*/ |
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public void setClasspath(Path cp) { |
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if (classpath == null) { |
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classpath = cp; |
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} else { |
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classpath.append(cp); |
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} |
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} |
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/** |
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* Adds a path to the classpath. |
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*/ |
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public Path createClasspath() { |
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if (classpath == null) { |
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classpath = new Path(getProject()); |
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} |
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return classpath.createPath(); |
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} |
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/** |
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* validate |
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*/ |
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private void validate() { |
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int setcount=0; |
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if(classname != null) { |
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setcount++; |
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} |
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if(resource!=null) { |
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setcount++; |
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} |
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if(setcount == 0) { |
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throw new BuildException( |
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"One of classname or resource must be specified"); |
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} |
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if (setcount > 1) { |
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throw new BuildException( |
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"Only one of classname or resource can be specified"); |
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} |
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if(property==null) { |
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throw new BuildException("No property defined"); |
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} |
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} |
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/** |
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* execute it |
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* @throws BuildException |
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*/ |
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public void execute() throws BuildException { |
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validate(); |
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if (classpath!= null) { |
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getProject().log("using user supplied classpath: " + classpath, |
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Project.MSG_DEBUG); |
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classpath=classpath.concatSystemClasspath("ignore"); |
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} else { |
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classpath = new Path(getProject()); |
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classpath = classpath.concatSystemClasspath("only"); |
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getProject().log("using system classpath: " + classpath, Project.MSG_DEBUG); |
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} |
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AntClassLoader loader; |
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loader = new AntClassLoader(getProject().getCoreLoader(), |
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getProject(), |
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classpath, false); |
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String location=null; |
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if(classname!=null) { |
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//convert a class name into a resource |
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classname= classname.replace('.', '/'); |
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resource="/"+ classname +".class"; |
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} else { |
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if(!resource.startsWith("/")) { |
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resource="/"+resource; |
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} |
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} |
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log("Searching for "+resource,Project.MSG_VERBOSE); |
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URL url; |
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url=loader.getResource(resource); |
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if(url!=null) { |
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//set the property |
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location = url.toExternalForm(); |
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getProject().setNewProperty(property,location); |
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} |
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} |
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/** |
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* name the resource to look for |
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* @param resource |
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*/ |
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public void setResource(String resource) { |
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this.resource = resource; |
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} |
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/** |
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* name the class to look for |
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* @param classname |
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*/ |
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public void setClass(String classname) { |
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this.classname = classname; |
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} |
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/** |
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* the property to fill with the URL of the resource or class |
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* @param property |
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*/ |
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public void setProperty(String property) { |
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this.property = property; |
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} |
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} |
Steve Loughran