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Woodstox is a high-performance XML processor that
implements Stax (JSR-173) and SAX2 APIs
/* Woodstox XML processor
*
* Copyright (c) 2004- Tatu Saloranta, [email protected]
*
* Licensed under the License specified in the file LICENSE,
* included with the source code.
* You may not use this file except in compliance with the License.
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.ctc.wstx.sw;
import java.io.IOException;
import java.util.Iterator;
import javax.xml.XMLConstants;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamWriter;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.events.Attribute;
import javax.xml.stream.events.Namespace;
import javax.xml.stream.events.StartElement;
import com.ctc.wstx.api.WriterConfig;
import com.ctc.wstx.cfg.ErrorConsts;
import com.ctc.wstx.sr.AttributeCollector;
import com.ctc.wstx.sr.InputElementStack;
/**
* Namespace-aware implementation of {@link XMLStreamWriter}, that does
* not do namespace repairing, ie doesn't try to resolve possible
* conflicts between prefixes and namespace URIs, or automatically
* create namespace bindings.
*/
public class SimpleNsStreamWriter
extends BaseNsStreamWriter
{
/*
////////////////////////////////////////////////////
// Life-cycle (ctors)
////////////////////////////////////////////////////
*/
public SimpleNsStreamWriter(XmlWriter xw, String enc, WriterConfig cfg)
{
super(xw, enc, cfg, false);
}
/*
////////////////////////////////////////////////////
// XMLStreamWriter API
////////////////////////////////////////////////////
*/
//public NamespaceContext getNamespaceContext()
//public void setNamespaceContext(NamespaceContext context)
//public String getPrefix(String uri)
//public void setPrefix(String prefix, String uri)
//public void writeAttribute(String localName, String value)
public void writeAttribute(String nsURI, String localName, String value)
throws XMLStreamException
{
// No need to set mAnyOutput, nor close the element
if (!mStartElementOpen) {
throwOutputError(ErrorConsts.WERR_ATTR_NO_ELEM);
}
String prefix = mCurrElem.getExplicitPrefix(nsURI);
if (!mReturnNullForDefaultNamespace && prefix == null) {
throwOutputError("Unbound namespace URI '" + nsURI + "'");
}
doWriteAttr(localName, nsURI, prefix, value);
}
public void writeAttribute(String prefix, String nsURI,
String localName, String value)
throws XMLStreamException
{
if (!mStartElementOpen) {
throwOutputError(ErrorConsts.WERR_ATTR_NO_ELEM);
}
doWriteAttr(localName, nsURI, prefix, value);
}
//public void writeEmptyElement(String localName) throws XMLStreamException
//public void writeEmptyElement(String nsURI, String localName) throws XMLStreamException
//public void writeEmptyElement(String prefix, String localName, String nsURI) throws XMLStreamException
//public void writeEndElement() throws XMLStreamException
public void writeDefaultNamespace(String nsURI)
throws XMLStreamException
{
if (!mStartElementOpen) {
throwOutputError(ERR_NSDECL_WRONG_STATE);
}
// 27-Mar-2007, TSa: Apparently TCK expects a binding to be added
setDefaultNamespace(nsURI);
doWriteDefaultNs(nsURI);
}
public void writeNamespace(String prefix, String nsURI)
throws XMLStreamException
{
if (prefix == null || prefix.length() == 0
|| prefix.equals(XMLConstants.XMLNS_ATTRIBUTE)) {
writeDefaultNamespace(nsURI);
return;
}
// No need to set mAnyOutput, and shouldn't close the element.
// But element needs to be open, obviously.
if (!mStartElementOpen) {
throwOutputError(ERR_NSDECL_WRONG_STATE);
}
/* 05-Feb-2005, TSa: Also, as per namespace specs; the 'empty'
* namespace URI can not be bound as a non-default namespace
* (ie. for any actual prefix)
*/
/* 04-Feb-2005, TSa: Namespaces 1.1 does allow this, though,
* so for xml 1.1 documents we need to allow it
*/
if (!mXml11) {
if (nsURI.length() == 0) {
throwOutputError(ErrorConsts.ERR_NS_EMPTY);
}
// 01-Apr-2005, TSa: Can we (and do we want to) verify NS consistency?
}
// 27-Mar-2007, TSa: Apparently TCK expects a binding to be added
setPrefix(prefix, nsURI);
doWriteNamespace(prefix, nsURI);
}
/*
////////////////////////////////////////////////////
// Package methods:
////////////////////////////////////////////////////
*/
public void setDefaultNamespace(String uri)
throws XMLStreamException
{
mCurrElem.setDefaultNsUri(uri);
}
public void doSetPrefix(String prefix, String uri)
throws XMLStreamException
{
mCurrElem.addPrefix(prefix, uri);
}
public void writeStartElement(StartElement elem)
throws XMLStreamException
{
QName name = elem.getName();
Iterator it = elem.getNamespaces();
while (it.hasNext()) {
Namespace ns = (Namespace) it.next();
// First need to 'declare' namespace:
String prefix = ns.getPrefix();
if (prefix == null || prefix.length() == 0) {
setDefaultNamespace(ns.getNamespaceURI());
} else {
setPrefix(prefix, ns.getNamespaceURI());
}
}
/* Outputting element itself is fairly easy. The main question
* is whether namespaces match. Let's use simple heuristics:
* if writer is to do automatic prefix matching, let's only
* pass explicit prefix (not default one); otherwise we'll
* pass all parameters as is.
*/
/* Quick check first though: if URI part of QName is null, it's
* assumed element will just use whatever is current default
* namespace....
*/
String nsURI = name.getNamespaceURI();
if (nsURI == null) {
writeStartElement(name.getLocalPart());
} else {
String prefix = name.getPrefix();
writeStartElement(prefix, name.getLocalPart(), nsURI);
}
// And now we need to output namespaces (including default), if any:
it = elem.getNamespaces();
while (it.hasNext()) {
Namespace ns = (Namespace) it.next();
String prefix = ns.getPrefix();
if (prefix == null || prefix.length() == 0) {
writeDefaultNamespace(ns.getNamespaceURI());
} else {
writeNamespace(prefix, ns.getNamespaceURI());
}
}
// And finally, need to output attributes as well:
it = elem.getAttributes();
while (it.hasNext()) {
Attribute attr = (Attribute) it.next();
name = attr.getName();
nsURI = name.getNamespaceURI();
// In non-default/empty namespace?
if (nsURI != null && nsURI.length() > 0) {
writeAttribute(name.getPrefix(), nsURI,
name.getLocalPart(), attr.getValue());
} else {
writeAttribute(name.getLocalPart(), attr.getValue());
}
}
}
//public void writeEndElement(QName name) throws XMLStreamException
protected void writeStartOrEmpty(String localName, String nsURI)
throws XMLStreamException
{
// Need a prefix...
String prefix = mCurrElem.getPrefix(nsURI);
if (prefix == null) {
throw new XMLStreamException("Unbound namespace URI '"+nsURI+"'");
}
checkStartElement(localName, prefix);
if (mValidator != null) {
mValidator.validateElementStart(localName, nsURI, prefix);
}
if (mOutputElemPool != null) {
SimpleOutputElement newCurr = mOutputElemPool;
mOutputElemPool = newCurr.reuseAsChild(mCurrElem, prefix, localName, nsURI);
--mPoolSize;
mCurrElem = newCurr;
} else {
mCurrElem = mCurrElem.createChild(prefix, localName, nsURI);
}
doWriteStartTag(prefix, localName);
}
protected void writeStartOrEmpty(String prefix, String localName, String nsURI)
throws XMLStreamException
{
checkStartElement(localName, prefix);
if (mValidator != null) {
mValidator.validateElementStart(localName, nsURI, prefix);
}
if (mOutputElemPool != null) {
SimpleOutputElement newCurr = mOutputElemPool;
mOutputElemPool = newCurr.reuseAsChild(mCurrElem, prefix, localName, nsURI);
--mPoolSize;
mCurrElem = newCurr;
} else {
mCurrElem = mCurrElem.createChild(prefix, localName, nsURI);
}
doWriteStartTag(prefix, localName);
}
/**
* Element copier method implementation suitable to be used with
* namespace-aware writers in non-repairing (explicit namespaces) mode.
* The trickiest thing is having to properly
* order calls to setPrefix, writeNamespace
* and writeStartElement; the order writers expect is
* bit different from the order in which element information is
* passed in.
*/
public final void copyStartElement(InputElementStack elemStack,
AttributeCollector attrCollector)
throws IOException, XMLStreamException
{
// Any namespace declarations/bindings?
int nsCount = elemStack.getCurrentNsCount();
if (nsCount > 0) { // yup, got some...
/* First, need to (or at least, should?) add prefix bindings:
* (may not be 100% required, but probably a good thing to do,
* just so that app code has access to prefixes then)
*/
for (int i = 0; i < nsCount; ++i) {
String prefix = elemStack.getLocalNsPrefix(i);
String uri = elemStack.getLocalNsURI(i);
if (prefix == null || prefix.length() == 0) { // default NS
setDefaultNamespace(uri);
} else {
setPrefix(prefix, uri);
}
}
}
writeStartElement(elemStack.getPrefix(),
elemStack.getLocalName(),
elemStack.getNsURI());
if (nsCount > 0) {
// And then output actual namespace declarations:
for (int i = 0; i < nsCount; ++i) {
String prefix = elemStack.getLocalNsPrefix(i);
String uri = elemStack.getLocalNsURI(i);
if (prefix == null || prefix.length() == 0) { // default NS
writeDefaultNamespace(uri);
} else {
writeNamespace(prefix, uri);
}
}
}
/* And then let's just output attributes, if any (whether to copy
* implicit, aka "default" attributes, is configurable)
*/
int attrCount = mConfig.willCopyDefaultAttrs() ?
attrCollector.getCount() :
attrCollector.getSpecifiedCount();
if (attrCount > 0) {
for (int i = 0; i < attrCount; ++i) {
attrCollector.writeAttribute(i, mWriter);
}
}
}
public String validateQNamePrefix(QName name)
{
// Good as is, let's not complicate things
return name.getPrefix();
}
}