/*
* NamespaceRename.java
*
* Copyright 2008 Mark Logic Corporation.
* Portions Copyright 2007 Sun Microsystems, Inc.
* All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common
* Development and Distribution License("CDDL") (collectively, the
* "License"). You may not use this file except in compliance with the
* License. You can obtain a copy of the License at
* https://xproc.dev.java.net/public/CDDL+GPL.html or
* docs/CDDL+GPL.txt in the distribution. See the License for the
* specific language governing permissions and limitations under the
* License. When distributing the software, include this License Header
* Notice in each file and include the License file at docs/CDDL+GPL.txt.
*/
package com.xmlcalabash.library;
import com.xmlcalabash.core.XProcException;
import com.xmlcalabash.core.XProcRuntime;
import com.xmlcalabash.util.ProcessMatchingNodes;
import com.xmlcalabash.util.ProcessMatch;
import com.xmlcalabash.io.ReadablePipe;
import com.xmlcalabash.io.WritablePipe;
import com.xmlcalabash.model.RuntimeValue;
import net.sf.saxon.om.FingerprintedQName;
import net.sf.saxon.om.NameOfNode;
import net.sf.saxon.om.NamespaceBinding;
import net.sf.saxon.om.NodeInfo;
import net.sf.saxon.om.NamePool;
import javax.xml.XMLConstants;
import com.xmlcalabash.runtime.XAtomicStep;
import net.sf.saxon.om.NodeName;
import net.sf.saxon.s9api.Axis;
import net.sf.saxon.s9api.QName;
import net.sf.saxon.s9api.SaxonApiException;
import net.sf.saxon.s9api.XdmNode;
import net.sf.saxon.s9api.XdmSequenceIterator;
import net.sf.saxon.type.SimpleType;
/**
*
* @author ndw
*/
public class NamespaceRename extends DefaultStep implements ProcessMatchingNodes {
private static final QName _from = new QName("from");
private static final QName _to = new QName("to");
private static final QName _apply_to = new QName("apply-to");
private ReadablePipe source = null;
private WritablePipe result = null;
private ProcessMatch matcher = null;
private String from = null;
private String to = null;
private String applyTo = null;
/** Creates a new instance of NamespaceRename */
public NamespaceRename(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 reset() {
source.resetReader();
result.resetWriter();
}
public void run() throws SaxonApiException {
super.run();
if (getOption(_from) != null) {
from = getOption(_from).getString();
} else {
from = "";
}
if (getOption(_to) != null) {
to = getOption(_to).getString();
} else {
to = "";
}
applyTo = getOption(_apply_to, "all");
if (XMLConstants.XML_NS_URI.equals(from) || XMLConstants.XML_NS_URI.equals(to)
|| XMLConstants.XMLNS_ATTRIBUTE_NS_URI.equals(from) || XMLConstants.XMLNS_ATTRIBUTE_NS_URI.equals(to)) {
throw XProcException.stepError(14);
}
if (from.equals(to)) {
result.write(source.read());
} else {
matcher = new ProcessMatch(runtime, this);
matcher.match(source.read(), new RuntimeValue("*", step.getNode()));
result.write(matcher.getResult());
}
if (source.moreDocuments()) {
throw XProcException.dynamicError(6);
}
}
public boolean processStartDocument(XdmNode node) throws SaxonApiException {
return true;
}
public void processEndDocument(XdmNode node) throws SaxonApiException {
matcher.addEndElement();
}
public boolean processStartElement(XdmNode node) throws SaxonApiException {
NodeInfo inode = node.getUnderlyingNode();
NamespaceBinding inscopeNS[] = inode.getDeclaredNamespaces(null);
NamespaceBinding newNS[] = null;
if ("attributes".equals(applyTo)) {
matcher.addStartElement(new NameOfNode(inode), inode.getSchemaType(), inscopeNS);
} else {
if (inscopeNS.length > 0) {
int countNS = 0;
for (int pos = 0; pos < inscopeNS.length; pos++) {
NamespaceBinding ns = inscopeNS[pos];
String uri = ns.getURI();
if (!from.equals(uri) || !"".equals(to)) {
countNS++;
}
}
newNS = new NamespaceBinding[countNS];
int newPos = 0;
for (int pos = 0; pos < inscopeNS.length; pos++) {
NamespaceBinding ns = inscopeNS[pos];
String pfx = ns.getPrefix();
String uri = ns.getURI();
if (from.equals(uri)) {
if ("".equals(to)) {
// Nevermind, we're throwing the namespace away
} else {
NamespaceBinding newns = new NamespaceBinding(pfx,to);
newNS[newPos++] = newns;
}
} else {
newNS[newPos++] = ns;
}
}
}
// Careful, we're messing with the namespace bindings
// Make sure the nameCode is right...
NodeName nameCode = new NameOfNode(inode);
String pfx = nameCode.getPrefix();
String uri = nameCode.getURI();
if (from.equals(uri)) {
if ("".equals(to)) {
pfx = "";
}
nameCode = new FingerprintedQName(pfx,to,nameCode.getLocalPart());
}
matcher.addStartElement(nameCode, inode.getSchemaType(), newNS);
}
if (!"elements".equals(applyTo)) {
XdmSequenceIterator iter = node.axisIterator(Axis.ATTRIBUTE);
while (iter.hasNext()) {
XdmNode attr = (XdmNode) iter.next();
inode = attr.getUnderlyingNode();
NodeName nameCode = new NameOfNode(inode);
String pfx = nameCode.getPrefix();
String uri = nameCode.getURI();
if (from.equals(uri)) {
if ("".equals(pfx)) {
pfx = "_1";
}
nameCode = new FingerprintedQName(pfx,to,nameCode.getLocalPart());
}
matcher.addAttribute(nameCode, (SimpleType) inode.getSchemaType(), attr.getStringValue());
}
} else {
matcher.addAttributes(node);
}
return true;
}
public void processEndElement(XdmNode node) throws SaxonApiException {
matcher.addEndElement();
}
public void processText(XdmNode node) throws SaxonApiException {
matcher.addText(node.getStringValue());
}
public void processComment(XdmNode node) throws SaxonApiException {
matcher.addComment(node.getStringValue());
}
public void processPI(XdmNode node) throws SaxonApiException {
matcher.addPI(node.getNodeName().getLocalName(), node.getStringValue());
}
public void processAttribute(XdmNode node) throws SaxonApiException {
throw new UnsupportedOperationException("processAttribute can't be called in NamespaceRename--but it was!?");
}
}