src/antidote/org/apache/tools/ant/gui/acs/ACSFactory.java - ant - Git at Google

 /*
  * The Apache Software License, Version 1.1
  *
  * Copyright (c) 1999, 2000 The Apache Software Foundation.  All rights
  * reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  *
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  *
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in
  *    the documentation and/or other materials provided with the
  *    distribution.
  *
  * 3. The end-user documentation included with the redistribution, if
  *    any, must include the following acknowlegement:
  *       "This product includes software developed by the
  *        Apache Software Foundation (http://www.apache.org/)."
  *    Alternately, this acknowlegement may appear in the software itself,
  *    if and wherever such third-party acknowlegements normally appear.
  *
  * 4. The names "The Jakarta Project", "Ant", and "Apache Software
  *    Foundation" must not be used to endorse or promote products derived
  *    from this software without prior written permission. For written
  *    permission, please contact apache@apache.org.
  *
  * 5. Products derived from this software may not be called "Apache"
  *    nor may "Apache" appear in their names without prior written
  *    permission of the Apache Group.
  *
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  * ====================================================================
  *
  * This software consists of voluntary contributions made by many
  * individuals on behalf of the Apache Software Foundation.  For more
  * information on the Apache Software Foundation, please see
  * <http://www.apache.org/>.
  */
 package org.apache.tools.ant.gui.acs;

 import javax.xml.parsers.*;
 import java.io.IOException;
 import java.io.File;
 import java.net.URL;
 import org.w3c.dom.*;
 import org.xml.sax.SAXException;
 import com.sun.xml.parser.Parser;
 import com.sun.xml.tree.SimpleElementFactory;
 import com.sun.xml.tree.XmlDocument;
 import com.sun.xml.tree.XmlDocumentBuilder;
 import java.util.Properties;
 import java.util.Enumeration;
 import com.sun.xml.parser.Resolver;

 /**
  * Factory for loading Ant Construction set elements.
  *
  * @version $Revision$
  * @author Simeon Fitch
  */
 public class ACSFactory {
     /** Singleton instance of the factory. */
     private static ACSFactory _instance = null;

     /** Element maping. */
     private static final Properties _elementMap = new Properties();

     static {
         try {
             // First we bootstrap our knowledge of the Ant tasks by reading
             // in the taskdef definitions and assigning them the default
             // task element class.
             _elementMap.load(org.apache.tools.ant.taskdefs.Ant.class.
                           getResourceAsStream("defaults.properties"));
             Enumeration enum = _elementMap.propertyNames();
             while(enum.hasMoreElements()) {
                 String name = (String) enum.nextElement();
                 // XXX the name of the class needs to be stored externally.
                 _elementMap.setProperty(
                     name, "org.apache.tools.ant.gui.acs.ACSTaskElement");
             }

             // Then we add/override the local definitions.
             _elementMap.load(ACSFactory.class.
                              getResourceAsStream("acs-element.properties"));
         }
         catch(Throwable ex) {
             // If something wrong happens here we can't do much more...
             ex.printStackTrace();
             System.exit(1);
         }
     }

 	/**
 	 * Default ctor.
 	 *
 	 */
     private ACSFactory() {

     }

 	/**
 	 * Get an instance of the factory.
 	 *
 	 * @return Factory instance.
 	 */
     public static ACSFactory getInstance() {
         if(_instance == null) {
             _instance = new ACSFactory();
         }
         return _instance;
     }

 	/**
 	 * Load a project from the given XML file.
      * XXX fix me.
 	 *
 	 * @param location Location of the file.
 	 * @return Loaded project.
 	 */
     public ACSProjectElement load(File location) throws IOException {
         return load(new URL("file", null, location.getPath()));
     }

 	/**
 	 * Load a project from the given XML file.
      * XXX fix me.
 	 *
 	 * @param location Location of the file.
 	 * @return Loaded project.
 	 */
     public ACSProjectElement load(URL location) throws IOException {
         XmlDocument doc = null;

         try {
             SAXParser sax = SAXParserFactory.newInstance().newSAXParser();
             Parser parser = (Parser) sax.getParser();
             XmlDocumentBuilder builder = new XmlDocumentBuilder();
             builder.setIgnoringLexicalInfo(false);
             SimpleElementFactory fact = new SimpleElementFactory();
             fact.addMapping(_elementMap, ACSFactory.class.getClassLoader());

             builder.setElementFactory(fact);

             parser.setDocumentHandler(builder);
             parser.setEntityResolver(new Resolver());
             //parser.setErrorHandler();

             sax.parse(location.openStream(), null);

             doc = builder.getDocument();

         }
         catch(ParserConfigurationException ex) {
             ex.printStackTrace();
             throw new IOException(ex.getMessage());
         }
         catch(SAXException ex) {
             ex.printStackTrace();
             throw new IOException(ex.getMessage());
         }

         return (ACSProjectElement) doc.getDocumentElement();
     }

     /**
      * Create a new, empty project.
      *
      * @return Empty project.
      */
     public ACSProjectElement createProject() {
         SimpleElementFactory fact = new SimpleElementFactory();
         fact.addMapping(_elementMap, ACSFactory.class.getClassLoader());
         XmlDocument doc = new XmlDocument();
         doc.setElementFactory(fact);
         return (ACSProjectElement) doc.createElement("project");
     }


     /**
      * Create a new target.
      *
      * @param project Project the target is assigned to.
      * @return New, unnamed target.
      */
     public ACSTargetElement createTarget(ACSProjectElement project) {
         ACSTargetElement retval = (ACSTargetElement) project.
             getOwnerDocument().createElement("target");
         indent(project, 1);
         project.appendChild(retval);
         return retval;
     }

     /**
      * Create a new task.
      *
      * @param target Target the task is assigned to.
      * @return New, unnamed task.
      */
     public ACSTaskElement createTask(ACSTargetElement target) {
         ACSTaskElement retval = (ACSTaskElement) target.
             getOwnerDocument().createElement("task");
         indent(target, 2);
         target.appendChild(retval);
         return retval;
     }

     /**
      * Create a new property.
      *
      * @param node the Node to assign the property to.
      * @return New, unnamed property.
      */
     public ACSPropertyElement createProperty(ACSElement node) {
         ACSPropertyElement retval = (ACSPropertyElement) node.
             getOwnerDocument().createElement("property");
         // XXX fixme.
         indent(node, 1);
         node.appendChild(retval);
         return retval;
     }

     /**
      * Insert a new line and indentation at the end of the given
      * node in preparation for a new element being added.
      *
      * @param node Node to append indent to.
      * @param level Indentation level.
      */
     private void indent(ACSElement node, int level) {
         StringBuffer buf = new StringBuffer("\n");
         for(int i = 0; i < level; i++) {
             buf.append("    ");
         }

         Text text = node.getOwnerDocument().createTextNode(buf.toString());
         node.appendChild(text);
     }


 	/**
 	 * Test code
 	 *
 	 * @param args  XML file to parse.
 	 */
     public static void main(String[] args) {
         try {
             ACSFactory f = ACSFactory.getInstance();

             System.out.println(f.load(new File(args[0])));
         }
         catch(Exception ex) {
             ex.printStackTrace();
         }
     }

 }
	/*
	* The Apache Software License, Version 1.1
	*
	* Copyright (c) 1999, 2000 The Apache Software Foundation. All rights
	* reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	*
	* 1. Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	*
	* 2. Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in
	* the documentation and/or other materials provided with the
	* distribution.
	*
	* 3. The end-user documentation included with the redistribution, if
	* any, must include the following acknowlegement:
	* "This product includes software developed by the
	* Apache Software Foundation (http://www.apache.org/)."
	* Alternately, this acknowlegement may appear in the software itself,
	* if and wherever such third-party acknowlegements normally appear.
	*
	* 4. The names "The Jakarta Project", "Ant", and "Apache Software
	* Foundation" must not be used to endorse or promote products derived
	* from this software without prior written permission. For written
	* permission, please contact apache@apache.org.
	*
	* 5. Products derived from this software may not be called "Apache"
	* nor may "Apache" appear in their names without prior written
	* permission of the Apache Group.
	*
	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
	* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
	* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
	* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
	* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	* SUCH DAMAGE.
	* ====================================================================
	*
	* This software consists of voluntary contributions made by many
	* individuals on behalf of the Apache Software Foundation. For more
	* information on the Apache Software Foundation, please see
	* <http://www.apache.org/>.
	*/
	package org.apache.tools.ant.gui.acs;

	import javax.xml.parsers.*;
	import java.io.IOException;
	import java.io.File;
	import java.net.URL;
	import org.w3c.dom.*;
	import org.xml.sax.SAXException;
	import com.sun.xml.parser.Parser;
	import com.sun.xml.tree.SimpleElementFactory;
	import com.sun.xml.tree.XmlDocument;
	import com.sun.xml.tree.XmlDocumentBuilder;
	import java.util.Properties;
	import java.util.Enumeration;
	import com.sun.xml.parser.Resolver;

	/**
	* Factory for loading Ant Construction set elements.
	*
	* @version $Revision$
	* @author Simeon Fitch
	*/
	public class ACSFactory {
	/** Singleton instance of the factory. */
	private static ACSFactory _instance = null;

	/** Element maping. */
	private static final Properties _elementMap = new Properties();

	static {
	try {
	// First we bootstrap our knowledge of the Ant tasks by reading
	// in the taskdef definitions and assigning them the default
	// task element class.
	_elementMap.load(org.apache.tools.ant.taskdefs.Ant.class.
	getResourceAsStream("defaults.properties"));
	Enumeration enum = _elementMap.propertyNames();
	while(enum.hasMoreElements()) {
	String name = (String) enum.nextElement();
	// XXX the name of the class needs to be stored externally.
	_elementMap.setProperty(
	name, "org.apache.tools.ant.gui.acs.ACSTaskElement");
	}

	// Then we add/override the local definitions.
	_elementMap.load(ACSFactory.class.
	getResourceAsStream("acs-element.properties"));
	}
	catch(Throwable ex) {
	// If something wrong happens here we can't do much more...
	ex.printStackTrace();
	System.exit(1);
	}
	}

	/**
	* Default ctor.
	*
	*/
	private ACSFactory() {

	}

	/**
	* Get an instance of the factory.
	*
	* @return Factory instance.
	*/
	public static ACSFactory getInstance() {
	if(_instance == null) {
	_instance = new ACSFactory();
	}
	return _instance;
	}

	/**
	* Load a project from the given XML file.
	* XXX fix me.
	*
	* @param location Location of the file.
	* @return Loaded project.
	*/
	public ACSProjectElement load(File location) throws IOException {
	return load(new URL("file", null, location.getPath()));
	}

	/**
	* Load a project from the given XML file.
	* XXX fix me.
	*
	* @param location Location of the file.
	* @return Loaded project.
	*/
	public ACSProjectElement load(URL location) throws IOException {
	XmlDocument doc = null;

	try {
	SAXParser sax = SAXParserFactory.newInstance().newSAXParser();
	Parser parser = (Parser) sax.getParser();
	XmlDocumentBuilder builder = new XmlDocumentBuilder();
	builder.setIgnoringLexicalInfo(false);
	SimpleElementFactory fact = new SimpleElementFactory();
	fact.addMapping(_elementMap, ACSFactory.class.getClassLoader());

	builder.setElementFactory(fact);

	parser.setDocumentHandler(builder);
	parser.setEntityResolver(new Resolver());
	//parser.setErrorHandler();

	sax.parse(location.openStream(), null);

	doc = builder.getDocument();

	}
	catch(ParserConfigurationException ex) {
	ex.printStackTrace();
	throw new IOException(ex.getMessage());
	}
	catch(SAXException ex) {
	ex.printStackTrace();
	throw new IOException(ex.getMessage());
	}

	return (ACSProjectElement) doc.getDocumentElement();
	}

	/**
	* Create a new, empty project.
	*
	* @return Empty project.
	*/
	public ACSProjectElement createProject() {
	SimpleElementFactory fact = new SimpleElementFactory();
	fact.addMapping(_elementMap, ACSFactory.class.getClassLoader());
	XmlDocument doc = new XmlDocument();
	doc.setElementFactory(fact);
	return (ACSProjectElement) doc.createElement("project");
	}


	/**
	* Create a new target.
	*
	* @param project Project the target is assigned to.
	* @return New, unnamed target.
	*/
	public ACSTargetElement createTarget(ACSProjectElement project) {
	ACSTargetElement retval = (ACSTargetElement) project.
	getOwnerDocument().createElement("target");
	indent(project, 1);
	project.appendChild(retval);
	return retval;
	}

	/**
	* Create a new task.
	*
	* @param target Target the task is assigned to.
	* @return New, unnamed task.
	*/
	public ACSTaskElement createTask(ACSTargetElement target) {
	ACSTaskElement retval = (ACSTaskElement) target.
	getOwnerDocument().createElement("task");
	indent(target, 2);
	target.appendChild(retval);
	return retval;
	}

	/**
	* Create a new property.
	*
	* @param node the Node to assign the property to.
	* @return New, unnamed property.
	*/
	public ACSPropertyElement createProperty(ACSElement node) {
	ACSPropertyElement retval = (ACSPropertyElement) node.
	getOwnerDocument().createElement("property");
	// XXX fixme.
	indent(node, 1);
	node.appendChild(retval);
	return retval;
	}

	/**
	* Insert a new line and indentation at the end of the given
	* node in preparation for a new element being added.
	*
	* @param node Node to append indent to.
	* @param level Indentation level.
	*/
	private void indent(ACSElement node, int level) {
	StringBuffer buf = new StringBuffer("\n");
	for(int i = 0; i < level; i++) {
	buf.append(" ");
	}

	Text text = node.getOwnerDocument().createTextNode(buf.toString());
	node.appendChild(text);
	}


	/**
	* Test code
	*
	* @param args XML file to parse.
	*/
	public static void main(String[] args) {
	try {
	ACSFactory f = ACSFactory.getInstance();

	System.out.println(f.load(new File(args[0])));
	}
	catch(Exception ex) {
	ex.printStackTrace();
	}
	}

	}