package com.xmlcalabash.library;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URI;
import java.util.Properties;
import java.util.Vector;
import net.sf.saxon.s9api.QName;
import net.sf.saxon.s9api.SaxonApiException;
import com.xmlcalabash.config.FoProcessor;
import com.xmlcalabash.core.XProcConstants;
import com.xmlcalabash.core.XProcException;
import com.xmlcalabash.core.XProcRuntime;
import com.xmlcalabash.io.DataStore;
import com.xmlcalabash.io.DataStore.DataWriter;
import com.xmlcalabash.io.ReadablePipe;
import com.xmlcalabash.io.WritablePipe;
import com.xmlcalabash.model.RuntimeValue;
import com.xmlcalabash.runtime.XAtomicStep;
import com.xmlcalabash.util.TreeWriter;
/**
* Created by IntelliJ IDEA.
* User: ndw
* Date: Oct 21, 2008
* Time: 6:59:07 PM
* To change this template use File | Settings | File Templates.
*/
public class XSLFormatter extends DefaultStep {
private static final QName _href = new QName("","href");
private static final QName _content_type = new QName("","content-type");
private ReadablePipe source = null;
private WritablePipe result = null;
private Properties options = new Properties();
/** Creates a new instance of Unzip */
public XSLFormatter(XProcRuntime runtime, XAtomicStep step) {
super(runtime,step);
}
public void setInput(String port, ReadablePipe pipe) {
source = pipe;
}
public void setOutput(String port, WritablePipe pipe) {
result = pipe;
}
public void setParameter(QName name, RuntimeValue value) {
if (!"".equals(name.getNamespaceURI())) {
throw new XProcException(step.getNode(), "The p:xsl-formatter parameters are in no namespace: " + name + " (" + name.getNamespaceURI() + ")");
}
options.setProperty(name.getLocalName(), value.getString());
}
public void reset() {
result.resetWriter();
}
public void run() throws SaxonApiException {
super.run();
Vector<String> foClasses = new Vector<String> ();
if (runtime.getConfiguration().foProcessor != null) {
foClasses.add(runtime.getConfiguration().foProcessor);
}
foClasses.add("com.xmlcalabash.util.FoFOP");
FoProcessor provider = null;
Throwable pexcept = null;
for (String className : foClasses) {
if (provider == null) {
try {
provider = (FoProcessor) Class.forName(className).newInstance();
provider.initialize(runtime,step,options);
break;
} catch (NoClassDefFoundError ncdfe) {
pexcept = ncdfe;
provider = null;
} catch (Exception e) {
pexcept = e;
provider = null;
}
}
}
if (provider == null) {
throw new XProcException(step.getNode(), "Failed to instantiate FO provider", pexcept);
}
final String contentType;
if (getOption(_content_type) != null) {
contentType = getOption(_content_type).getString();
} else {
contentType = "application/octet-stream";
}
String base = getOption(_href).getBaseURI().toASCIIString();
String href = getOption(_href).getString();
try {
final FoProcessor processor = provider;
DataStore store = runtime.getDataStore();
URI id = store.writeEntry(href, base, contentType, new DataWriter() {
public void store(OutputStream content) throws IOException {
OutputStream out = new BufferedOutputStream(content);
try {
processor.format(source.read(),out,contentType);
} catch (SaxonApiException e) {
throw new XProcException(step.getNode(), "Failed to process FO document", e);
} finally {
out.close();
}
}
});
TreeWriter tree = new TreeWriter(runtime);
tree.startDocument(step.getNode().getBaseURI());
tree.addStartElement(XProcConstants.c_result);
tree.startContent();
tree.addText(id.toASCIIString());
tree.addEndElement();
tree.endDocument();
result.write(tree.getResult());
} catch (XProcException e) {
throw e;
} catch (Exception e) {
throw new XProcException(step.getNode(), "Failed to process FO document", e);
}
}
}