package com.xmlcalabash.extensions.fileutils;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.OutputStream;
import java.net.URI;
import net.sf.saxon.s9api.QName;
import net.sf.saxon.s9api.SaxonApiException;
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.DataInfo;
import com.xmlcalabash.io.DataStore.DataWriter;
import com.xmlcalabash.io.WritablePipe;
import com.xmlcalabash.library.DefaultStep;
import com.xmlcalabash.model.RuntimeValue;
import com.xmlcalabash.runtime.XAtomicStep;
import com.xmlcalabash.util.TreeWriter;
/**
* Created by IntelliJ IDEA.
* User: ndw
* Date: May 24, 2009
* Time: 3:17:23 PM
* To change this template use File | Settings | File Templates.
*/
public class Touch extends DefaultStep {
private static final QName _href = new QName("href");
private WritablePipe result = null;
/**
* Creates a new instance of UriInfo
*/
public Touch(XProcRuntime runtime, XAtomicStep step) {
super(runtime,step);
}
public void setOutput(String port, WritablePipe pipe) {
result = pipe;
}
public void reset() {
result.resetWriter();
}
public void run() throws SaxonApiException {
super.run();
if (runtime.getSafeMode()) {
throw XProcException.dynamicError(21);
}
RuntimeValue href = getOption(_href);
final TreeWriter tree = new TreeWriter(runtime);
tree.startDocument(step.getNode().getBaseURI());
tree.addStartElement(XProcConstants.c_result);
tree.startContent();
try {
DataStore store = runtime.getDataStore();
String base = href.getBaseURI().toASCIIString();
try {
store.infoEntry(href.getString(), base, "*/*", new DataInfo() {
public void list(URI id, String media, long lastModified)
throws IOException {
// file already exists
tree.addText(id.toASCIIString());
}
});
} catch (FileNotFoundException e) {
URI uri = store.writeEntry(href.getString(), base, "text/plain", new DataWriter() {
public void store(OutputStream content) throws IOException {
// empty file
}
});
tree.addText(uri.toASCIIString());
}
} catch (IOException ioe) {
throw new XProcException(ioe);
}
tree.addEndElement();
tree.endDocument();
result.write(tree.getResult());
}
}