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package com.jclark.xsl.sax;
import org.xml.sax.*;
import com.jclark.xsl.tr.*;
import com.jclark.xsl.om.*;
import java.util.Locale;
import java.io.IOException;
import java.net.URL;
import java.util.Hashtable;
public class XSLProcessorImpl implements XSLProcessor, Cloneable, ParameterSet {
private XMLProcessorEx sourceLoader;
private XMLProcessorEx sheetLoader;
private boolean engineMatchesSheetLoader = false;
private Parser sheetParser;
private Parser sourceParser;
private Sheet sheet;
private Engine engine;
private InputSource sheetSource;
private ResultBase result;
private OutputMethodHandler outputMethodHandler;
private DocumentHandler documentHandler;
private ErrorHandler errorHandler;
private Hashtable params = new Hashtable();
public void setParser(Parser sourceParser, Parser sheetParser) {
this.sourceParser = sourceParser;
this.sheetParser = sheetParser;
sourceLoader = new XMLProcessorImpl(sourceParser);
if (sourceParser == sheetParser)
sheetLoader = sourceLoader;
else
sheetLoader = new XMLProcessorImpl(sheetParser);
engineMatchesSheetLoader = false;
}
public void setParser(XMLProcessorEx loader) {
this.sourceParser = null;
this.sheetParser = null;
sourceLoader = loader;
sheetLoader = loader;
engineMatchesSheetLoader = false;
}
public void setParser(Parser parser) {
setParser(parser, parser);
}
public void setLocale(Locale locale) throws SAXException {
if (sheetParser != null)
sheetParser.setLocale(locale);
if (sourceParser != null)
sourceParser.setLocale(locale);
}
public void setDTDHandler(DTDHandler handler) { }
public void setEntityResolver(EntityResolver resolver) {
if (sheetParser != null)
sheetParser.setEntityResolver(resolver);
if (sourceParser != null)
sourceParser.setEntityResolver(resolver);
}
public void setOutputMethodHandler(OutputMethodHandler handler) {
outputMethodHandler = handler;
documentHandler = null;
}
public void setDocumentHandler(DocumentHandler handler) {
documentHandler = handler;
outputMethodHandler = null;
}
public void parse(String systemId) throws SAXException, IOException {
parse(new InputSource(systemId));
}
public void setErrorHandler(ErrorHandler handler) {
if (sheetParser != null)
sheetParser.setErrorHandler(handler);
if (sourceParser != null)
sourceParser.setErrorHandler(handler);
if (sheetLoader != null)
sheetLoader.setErrorHandler(handler);
if (sourceLoader != null)
sourceLoader.setErrorHandler(handler);
this.errorHandler = handler;
}
public void loadStylesheet(InputSource sheetSource) throws SAXException, IOException {
if (!engineMatchesSheetLoader) {
if (sheetLoader == null)
throw new Error("loadStylesheet called before setParser");
engine = new EngineImpl(sheetLoader,
new ExtensionHandlerImpl());
engineMatchesSheetLoader = true;
}
try {
phase(1);
Node node = sheetLoader.load(sheetSource,
0,
engine.getSheetLoadContext(),
engine.getNameTable());
phase(2);
sheet = engine.createSheet(node);
}
catch (XSLException e) {
handleXSLException(e);
}
}
public void parse(InputSource source) throws SAXException, IOException {
try {
if (outputMethodHandler != null)
result = new MultiNamespaceResult(outputMethodHandler, errorHandler);
else if (documentHandler != null)
result = new MultiNamespaceResult(documentHandler, errorHandler);
else
result = new MultiNamespaceResult(new HandlerBase(), errorHandler);
phase(3);
Node root = sourceLoader.load(source,
0,
sheet.getSourceLoadContext(),
engine.getNameTable());
phase(4);
sheet.process(root, sourceLoader, this, result);
phase(5);
}
catch (XSLException e) {
handleXSLException(e);
}
}
void handleXSLException(XSLException e) throws SAXException, IOException {
String systemId = null;
int lineNumber = -1;
Node node = e.getNode();
if (node != null) {
URL url = node.getURL();
if (url != null)
systemId = url.toString();
lineNumber = node.getLineNumber();
}
Exception wrapped = e.getException();
String message = e.getMessage();
if (systemId != null || lineNumber != -1)
throw new SAXParseException(message,
null,
systemId,
lineNumber,
-1,
wrapped);
if (message == null) {
if (wrapped instanceof SAXException)
throw (SAXException)wrapped;
if (wrapped instanceof IOException)
throw (IOException)wrapped;
}
throw new SAXException(message, wrapped);
}
void phase(int n) { }
public Object clone() {
try {
XSLProcessorImpl cloned = (XSLProcessorImpl)super.clone();
cloned.params = (Hashtable)cloned.params.clone();
return cloned;
}
catch (CloneNotSupportedException e) {
throw new Error("unexpected CloneNotSupportedException");
}
}
public Object getParameter(Name name) {
String nameString = name.getNamespace();
if (nameString == null)
nameString = name.getLocalPart();
else
nameString = (nameString
+ OutputMethodHandler.namespaceSeparator
+ name.getLocalPart());
return params.get(nameString);
}
public void setParameter(String name, Object obj) {
params.put(name, obj);
}
}
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