/* Copyright 2003 Elliotte Rusty Harold
This library is free software; you can redistribute it and/or modify
it under the terms of version 2.1 of the GNU Lesser General Public
License as published by the Free Software Foundation.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330,
Boston, MA 02111-1307 USA
You can contact Elliotte Rusty Harold by sending e-mail to
[email protected]. Please include the word "XOM" in the
subject line. The XOM home page is located at http://www.xom.nu/
*/
package nu.xom.samples;
import java.io.IOException;
import nu.xom.Attribute;
import nu.xom.Builder;
import nu.xom.Element;
import nu.xom.NodeFactory;
import nu.xom.Nodes;
import nu.xom.ParsingException;
import java.util.List;
import java.util.ArrayList;
/**
*
* <p>
* Demonstrates walking the tree while collecting
* element and attribute names and types.
* </p>
*
* @author Elliotte Rusty Harold
* @version 1.0
*
*/
public class DTDGenerator {
public static void main(String[] args) {
if (args.length == 0) {
System.err.println(
"Usage: java nu.xom.samples.DTDGenerator URL"
);
return;
}
try {
Builder builder = new Builder(new NamingNodeFactory());
builder.build(args[0]);
}
catch (IOException ex) {
System.err.println("Could not read " + args[0]
+ " due to " + ex.getMessage());
}
catch (ParsingException ex) {
System.err.println(args[0] + " is not well-formed");
}
}
private static class NamingNodeFactory extends NodeFactory {
private List names = new ArrayList();
private String currentElement;
public Element startMakingElement(
String name, String namespace) {
if (!names.contains(name)) {
System.out.println("<!ELEMENT " + name + " ANY>");
names.add(name);
}
currentElement = name;
return super.startMakingElement(name, namespace);
}
public Nodes makeAttribute(String name, String URI,
String value, Attribute.Type type) {
if (type.equals(Attribute.Type.ENUMERATION)
|| type.equals(Attribute.Type.UNDECLARED)) {
type = Attribute.Type.CDATA;
}
String comboName = currentElement + '#' + name;
if (!names.contains(comboName)) {
names.add(comboName);
System.out.println("<!ATTLIST " + currentElement + " "
+ name + " " + type.getName() + " #IMPLIED>");
}
return super.makeAttribute(name, URI, value, type);
}
}
}
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