package com.xmlcalabash.extensions.fileutils;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
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.DataReader;
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 Move extends DefaultStep {
private static final QName _href = new QName("href");
private static final QName _target = new QName("target");
private static final int bufsize = 8192;
private WritablePipe result = null;
/**
* Creates a new instance of UriInfo
*/
public Move(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);
try {
final DataStore store = runtime.getDataStore();
String base = href.getBaseURI().toASCIIString();
store.readEntry(href.getString(), base, "*/*", null, new DataReader() {
public void load(URI id, String media, final InputStream src, long len)
throws IOException {
RuntimeValue target = getOption(_target);
URI uri = store.writeEntry(target.getString(), target.getBaseURI().toASCIIString(), media, new DataWriter() {
public void store(OutputStream dst) throws IOException {
byte[] buffer = new byte[bufsize];
int read = src.read(buffer, 0, bufsize);
while (read >= 0) {
dst.write(buffer, 0, read);
read = src.read(buffer, 0, bufsize);
}
}
});
TreeWriter tree = new TreeWriter(runtime);
tree.startDocument(step.getNode().getBaseURI());
tree.addStartElement(XProcConstants.c_result);
tree.startContent();
tree.addText(uri.toASCIIString());
tree.addEndElement();
tree.endDocument();
result.write(tree.getResult());
}
});
store.deleteEntry(href.getString(), base);
} catch (FileNotFoundException fnfe) {
URI uri = href.getBaseURI().resolve(href.getString());
throw new XProcException(step.getNode(), "Cannot copy: file does not exist: " + uri.toASCIIString());
} catch (IOException ioe) {
throw new XProcException(step.getNode(), ioe);
}
}
}