/*
* 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: 1.8 $
* @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();
}
}
}