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package com.wutka.dtd;
import java.io.*;
import java.util.*;
import java.net.URL;
/** Example program to read a DTD and print out its object model
*
* @author Mark Wutka
* @version $Revision: 1.17 $ $Date: 2002/07/28 13:33:12 $ by $Author: wutka $
*/
class Tokenize
{
public static void main(String[] args)
{
try
{
DTDParser parser = null;
// MAW Version 1.17
// If it looks like the filename may be a URL, use the URL class
if (args[0].indexOf("://") > 0)
{
parser = new DTDParser(new URL(args[0]), true);
}
else
{
parser = new DTDParser(new File(args[0]), true);
}
// Parse the DTD and ask the parser to guess the root element
DTD dtd = parser.parse(true);
if (dtd.rootElement != null)
{
System.out.println("Root element is probably: "+
dtd.rootElement.name);
}
Enumeration e = dtd.elements.elements();
while (e.hasMoreElements())
{
DTDElement elem = (DTDElement) e.nextElement();
System.out.println("Element: "+elem.name);
System.out.print(" Content: ");
dumpDTDItem(elem.content);
System.out.println();
if (elem.attributes.size() > 0)
{
System.out.println(" Attributes: ");
Enumeration attrs = elem.attributes.elements();
while (attrs.hasMoreElements())
{
System.out.print(" ");
DTDAttribute attr = (DTDAttribute) attrs.nextElement();
dumpAttribute(attr);
}
System.out.println();
}
}
e = dtd.entities.elements();
while (e.hasMoreElements())
{
DTDEntity entity = (DTDEntity) e.nextElement();
if (entity.isParsed) System.out.print("Parsed ");
System.out.println("Entity: "+entity.name);
if (entity.value != null)
{
System.out.println(" Value: "+entity.value);
}
if (entity.externalID != null)
{
if (entity.externalID instanceof DTDSystem)
{
System.out.println(" System: "+
entity.externalID.system);
}
else
{
DTDPublic pub = (DTDPublic) entity.externalID;
System.out.println(" Public: "+
pub.pub+" "+pub.system);
}
}
if (entity.ndata != null)
{
System.out.println(" NDATA "+entity.ndata);
}
}
e = dtd.notations.elements();
while (e.hasMoreElements())
{
DTDNotation notation = (DTDNotation) e.nextElement();
System.out.println("Notation: "+notation.name);
if (notation.externalID != null)
{
if (notation.externalID instanceof DTDSystem)
{
System.out.println(" System: "+
notation.externalID.system);
}
else
{
DTDPublic pub = (DTDPublic) notation.externalID;
System.out.print(" Public: "+
pub.pub+" ");
if (pub.system != null)
{
System.out.println(pub.system);
}
else
{
System.out.println();
}
}
}
}
}
catch (Exception exc)
{
exc.printStackTrace(System.out);
}
}
public static void dumpDTDItem(DTDItem item)
{
if (item == null) return;
if (item instanceof DTDAny)
{
System.out.print("Any");
}
else if (item instanceof DTDEmpty)
{
System.out.print("Empty");
}
else if (item instanceof DTDName)
{
System.out.print(((DTDName) item).value);
}
else if (item instanceof DTDChoice)
{
System.out.print("(");
DTDItem[] items = ((DTDChoice) item).getItems();
for (int i=0; i < items.length; i++)
{
if (i > 0) System.out.print("|");
dumpDTDItem(items[i]);
}
System.out.print(")");
}
else if (item instanceof DTDSequence)
{
System.out.print("(");
DTDItem[] items = ((DTDSequence) item).getItems();
for (int i=0; i < items.length; i++)
{
if (i > 0) System.out.print(",");
dumpDTDItem(items[i]);
}
System.out.print(")");
}
else if (item instanceof DTDMixed)
{
System.out.print("(");
DTDItem[] items = ((DTDMixed) item).getItems();
for (int i=0; i < items.length; i++)
{
if (i > 0) System.out.print(",");
dumpDTDItem(items[i]);
}
System.out.print(")");
}
else if (item instanceof DTDPCData)
{
System.out.print("#PCDATA");
}
if (item.cardinal == DTDCardinal.OPTIONAL)
{
System.out.print("?");
}
else if (item.cardinal == DTDCardinal.ZEROMANY)
{
System.out.print("*");
}
else if (item.cardinal == DTDCardinal.ONEMANY)
{
System.out.print("+");
}
}
public static void dumpAttribute(DTDAttribute attr)
{
System.out.print(attr.name+" ");
if (attr.type instanceof String)
{
System.out.print(attr.type);
}
else if (attr.type instanceof DTDEnumeration)
{
System.out.print("(");
String[] items = ((DTDEnumeration) attr.type).getItems();
for (int i=0; i < items.length; i++)
{
if (i > 0) System.out.print(",");
System.out.print(items[i]);
}
System.out.print(")");
}
else if (attr.type instanceof DTDNotationList)
{
System.out.print("Notation (");
String[] items = ((DTDNotationList) attr.type).getItems();
for (int i=0; i < items.length; i++)
{
if (i > 0) System.out.print(",");
System.out.print(items[i]);
}
System.out.print(")");
}
if (attr.decl != null)
{
System.out.print(" "+attr.decl.name);
}
if (attr.defaultValue != null)
{
System.out.print(" "+attr.defaultValue);
}
System.out.println();
}
}
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