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/**********************************************************/
/* xv4ht.java 2005-02-23-01:05 */
/* Copyright (C) 2005 Eitan M. Gurari */
/* */
/* This work may be distributed and/or modified under the */
/* conditions of the LaTeX Project Public License, either */
/* version 1.3 of this license or (at your option) any */
/* later version. The latest version of this license is */
/* in */
/* http://www.latex-project.org/lppl.txt */
/* and version 1.3 or later is part of all distributions */
/* of LaTeX version 2003/12/01 or later. */
/* */
/* This work has the LPPL maintenance status "maintained".*/
/* */
/* This Current Maintainer of this work */
/* is Eitan M. Gurari. */
/* */
/* If you modify this program your changing its signature */
/* with a directive of the following form will be */
/* appreciated. */
/* #define PLATFORM "signature" */
/* */
/* gurari@cse.ohio-state.edu */
/* http://www.cse.ohio-state.edu/~gurari */
/**********************************************************/
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.Hashtable;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.EntityResolver;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.SAXNotRecognizedException;
import org.xml.sax.SAXNotSupportedException;
import org.xml.sax.SAXParseException;
import org.xml.sax.XMLReader;
import org.xml.sax.ext.LexicalHandler;
import org.xml.sax.helpers.DefaultHandler;
class Xv4htContentHandler extends DefaultHandler {
String catalog;
boolean withinDTD = false;
Xv4htErrorHandler errHandler;
Xv4htLexicalHandler lexicalHandler;
public Xv4htContentHandler(XMLReader xmlReader, String catalog){
super();
this.catalog = catalog;
lexicalHandler = new Xv4htLexicalHandler();
try {
xmlReader.setProperty(
"http://xml.org/sax/properties/lexical-handler",
lexicalHandler
);
}
catch (SAXNotRecognizedException e) {
System.err.println(
"err 1");
return;
}
catch (SAXNotSupportedException e) {
System.err.println(
"err 2");
return;
}
errHandler = new Xv4htErrorHandler();
xmlReader.setErrorHandler( errHandler );
xmlReader.setEntityResolver( new Xv4htEntityResolver() );
}
public void startPrefixMapping(String prefix, String uri){
}
public void endPrefixMapping(String prefix) {
}
public void ignorableWhitespace(
char[] ch, int start, int length) {
}
public void notationDecl(
String name, String publicId, String systemId) {
}
public class Xv4htEntityResolver implements EntityResolver {
private Hashtable entities = new Hashtable();
public Xv4htEntityResolver() {
try{
FileReader myIn = new FileReader( catalog );
while( true ){
int c;
String publicID = "";
String systemID = "";
while( (c = myIn.read()) != '\"' ){
if( c == -1 ){ break; }
}
if( c == -1 ){ break; }
while( (c = myIn.read()) != '\"' ){
publicID += (char) c;
if( c == -1 ){ break; }
}
if( c == -1 ){ break; }
while( (c = myIn.read()) != '\"' ){
if( c == -1 ){ break; }
}
if( c == -1 ){ break; }
while( (c = myIn.read()) != '\"' ){
systemID += (char) c;
if( c == -1 ){ break; }
}
if( c == -1 ){ break; }
entities.put(publicID, systemID);
}
} catch(java.io.IOException e){ }
}
public InputSource resolveEntity(String publicID,
String systemID) throws SAXException {
if( publicID== null ){ return null; }
if( entities.containsKey(publicID) ){
String url = (String) entities.get(publicID);
InputSource local = new InputSource(url);
return local;
}
return null;
}
}
class Xv4htLexicalHandler implements LexicalHandler {
public void startDTD(String name, String publicId, String systemId)
throws SAXException {
withinDTD = true;
errHandler.errorOff();
}
public void endDTD() throws SAXException {
withinDTD = false;
errHandler.errorOn();
}
public void comment (char[] text, int start, int length)
throws SAXException {
}
public void startEntity(String name) throws SAXException {}
public void endEntity(String name) throws SAXException {}
public void startCDATA() throws SAXException {}
public void endCDATA() throws SAXException {}
}
}
class Xv4htErrorHandler extends DefaultHandler {
private boolean errOn = true;
public void warning(SAXParseException e) {
showError( e, "Warning" );
}
public void error(SAXParseException e) {
showError( e, "Warning" );
}
public void fatalError(SAXParseException e) {
showError( e, "Warning" );
}
public void errorOff() {
errOn = false;
}
public void errorOn() {
errOn = true;
}
private void showError(SAXParseException e, String m){
if( errOn ){
int c = e.getColumnNumber();
System.out.println(
m + ": " + e.getSystemId() + " " + e.getLineNumber()
+ ((c==-1)? "" : ("," + c))
+ ": " + e.getMessage()
);
} }
}
public class xv4ht{
static public void main (String[] args)
throws SAXException,
ParserConfigurationException,
IOException
{
SAXParserFactory factory =
SAXParserFactory.newInstance();
factory.setValidating( true );
factory.setNamespaceAware( true );
SAXParser saxParser = factory.newSAXParser();
XMLReader xmlReader = saxParser.getXMLReader();
if( args.length != 2 ){
System.out.print(
"--- A command line of the following form is required ---"
+ "\n java [-cp <path>] xv4ht <filename> <catalog>"
+ "\nreceived:\n java"
);
for(int i=0; i<args.length; i++ ){
System.out.print( " " + args[i] );
}
System.out.println();
System.exit( 1 );
}
xmlReader.setContentHandler( new Xv4htContentHandler(xmlReader, args[1])
);
xmlReader.parse ( new File(args[0]).toURL().toString() );
}
}
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