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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) 2000-2002 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.*; |
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import org.apache.tools.ant.types.*; |
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import java.io.*; |
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import java.util.*; |
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import org.xml.sax.Locator; |
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import org.xml.sax.InputSource; |
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//import org.xml.sax.HandlerBase; |
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import org.xml.sax.SAXParseException; |
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import org.xml.sax.XMLReader; |
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import org.xml.sax.SAXException; |
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import org.xml.sax.DocumentHandler; |
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import org.xml.sax.Attributes; |
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import org.xml.sax.AttributeList; |
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import org.xml.sax.helpers.XMLReaderAdapter; |
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import org.xml.sax.helpers.DefaultHandler; |
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import org.xml.sax.helpers.AttributeListImpl; |
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import javax.xml.parsers.SAXParserFactory; |
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import javax.xml.parsers.SAXParser; |
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import javax.xml.parsers.ParserConfigurationException; |
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/** |
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* Specify a system path, to be used to load optional.jar and all |
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* related libraries. |
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* |
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* Using the specified path it'll try to load or reload all optional |
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* tasks. The typical use is: |
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* <pre> |
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* <path id="ant.deps" > |
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* <fileset ... /> |
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* </path> |
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* |
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* <systemPath pathRef="ant.deps" /> |
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* |
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* <junit ... /> |
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* </pre> |
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* |
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* This requires that ant-sax2.jar is included in ant/lib. |
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* |
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* It has a single property, a reference to a <path> containing all |
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* the jars that you need. It'll automatically reload optional.jar |
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* tasks in a different (non-delegating) loader. |
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* |
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* @author Costin Manolache |
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*/ |
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public class SystemPath extends Task { |
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public static final String SYSTEM_LOADER_REF="ant.system.loader"; |
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public SystemPath() { |
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} |
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/** Specify which path will be used. |
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*/ |
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public void setPathRef( Reference pathRef ) throws BuildException { |
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Path path=(Path)pathRef.getReferencedObject(project); |
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initSystemLoader(path); |
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} |
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/** Will prepare the class loader to allow dynamic modifications |
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* of the classpath. Optional tasks are loaded in a different loader. |
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*/ |
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private void initSystemLoader(Path path) { |
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try { |
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if( project.getReference( SYSTEM_LOADER_REF ) != null ) |
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return; // already done that. |
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// reverse loader |
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AntClassLoader acl=new AntClassLoader( this.getClass().getClassLoader(), true ); |
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acl.addLoaderPackageRoot( "org.apache.tools.ant.taskdefs.optional"); |
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project.addReference( SYSTEM_LOADER_REF, acl ); |
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String list[]=path.list(); |
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for( int i=0; i<list.length; i++ ) { |
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File f= new File( list[i] ); |
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if( f.exists() ) { |
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acl.addPathElement(f.getAbsolutePath()); |
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} |
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} |
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// XXX find the classpath |
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String antHome=project.getProperty( "ant.home" ); |
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File optionalJar=new File( antHome + "/lib/optional.jar" ); |
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if( optionalJar.exists() ) |
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acl.addPathElement(optionalJar.getAbsolutePath() ); |
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// reinit the loader for optional, if they were in /lib/ |
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Hashtable tasks=project.getTaskDefinitions(); |
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//System.out.println("Replacing jars" ); |
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// reload all optional tasks in this loader. |
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// Some tasks weren't defined by the normal init(), since deps were missing. |
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String defs = "/org/apache/tools/ant/taskdefs/defaults.properties"; |
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try { |
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Properties props = new Properties(); |
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InputStream in = this.getClass().getResourceAsStream(defs); |
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if (in == null) { |
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throw new BuildException("Can't load default task list"); |
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} |
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props.load(in); |
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in.close(); |
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Enumeration enum = tasks.keys(); |
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while( enum.hasMoreElements()) { |
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String key = (String) enum.nextElement(); |
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Class c=(Class)tasks.get(key); |
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if( ! c.getName().startsWith( "org.apache.tools.ant.taskdefs.optional" )) |
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continue; |
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// other classes that needs to be replaced ?? |
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try { |
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Class taskClass = acl.loadClass(c.getName()); |
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//project.addTaskDefinition(key, taskClass); |
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project.getTaskDefinitions().put(key, taskClass); |
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System.out.println("Loaded " + key + " " + taskClass.getClassLoader() ); |
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} catch (NoClassDefFoundError ncdfe) { |
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log("Could not load a dependent class (" |
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+ ncdfe.getMessage() + ") for task " + key, Project.MSG_DEBUG); |
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} catch (ClassNotFoundException cnfe) { |
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log("Could not load class (" + c.getName() |
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+ ") for task " + key, Project.MSG_DEBUG); |
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} catch (Exception ex) { |
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ex.printStackTrace(); |
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} |
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} |
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// Some tasks couldn't be defined on the first run |
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enum = props.propertyNames(); |
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while (enum.hasMoreElements()) { |
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String key = (String) enum.nextElement(); |
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String value = props.getProperty(key); |
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if( ! value.startsWith( "org.apache.tools.ant.taskdefs.optional" )) |
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continue; |
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if( tasks.get( key ) != null ) |
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continue; |
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// other classes that needs to be replaced ?? |
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try { |
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Class taskClass = acl.loadClass(value); |
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//project.addTaskDefinition(key, taskClass); |
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project.getTaskDefinitions().put(key, taskClass); |
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//System.out.println("Loaded " + key + " " + taskClass.getClassLoader() ); |
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} catch (NoClassDefFoundError ncdfe) { |
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log("Could not load a dependent class (" |
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+ ncdfe.getMessage() + ") for task " + key, Project.MSG_DEBUG); |
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} catch (ClassNotFoundException cnfe) { |
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log("Could not load class (" + value |
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+ ") for task " + key, Project.MSG_DEBUG); |
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} catch (Exception ex) { |
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ex.printStackTrace(); |
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} |
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} |
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} catch (IOException ioe) { |
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throw new BuildException("Can't load default task list"); |
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} |
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} catch( Exception ex ) { |
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ex.printStackTrace(); |
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} |
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} |
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} |
Costin Manolache