jaxp/src/com/sun/org/apache/xalan/internal/xsltc/trax/SAX2StAXEventWriter.java
changeset 12457 c348e06f0e82
parent 12005 a754d69d5e60
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jaxp/src/com/sun/org/apache/xalan/internal/xsltc/trax/SAX2StAXEventWriter.java	Thu Apr 12 08:38:26 2012 -0700
@@ -0,0 +1,420 @@
+/*
+ * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.sun.org.apache.xalan.internal.xsltc.trax;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Map;
+
+import javax.xml.stream.XMLEventFactory;
+import javax.xml.stream.XMLStreamException;
+import javax.xml.stream.events.*;
+import javax.xml.stream.XMLEventWriter;
+
+import org.xml.sax.Attributes;
+import org.xml.sax.SAXException;
+import org.xml.sax.ext.Locator2;
+
+/**
+ * @author Sunitha Reddy
+ */
+public class SAX2StAXEventWriter extends SAX2StAXBaseWriter {
+
+
+    private XMLEventWriter writer;
+
+
+    private XMLEventFactory eventFactory;
+
+
+    private List namespaceStack = new ArrayList();
+
+
+    private boolean needToCallStartDocument = false;
+
+
+    public SAX2StAXEventWriter() {
+
+        eventFactory = XMLEventFactory.newInstance();
+
+    }
+
+
+    public SAX2StAXEventWriter(XMLEventWriter writer) {
+
+        this.writer = writer;
+        eventFactory = XMLEventFactory.newInstance();
+
+    }
+
+    public SAX2StAXEventWriter(XMLEventWriter writer,
+            XMLEventFactory factory) {
+
+        this.writer = writer;
+        if (factory != null) {
+
+            this.eventFactory = factory;
+
+        } else {
+
+            eventFactory = XMLEventFactory.newInstance();
+
+        }
+
+    }
+
+    public XMLEventWriter getEventWriter() {
+
+        return writer;
+
+    }
+
+
+    public void setEventWriter(XMLEventWriter writer) {
+
+        this.writer = writer;
+
+    }
+
+
+    public XMLEventFactory getEventFactory() {
+
+        return eventFactory;
+
+    }
+
+
+    public void setEventFactory(XMLEventFactory factory) {
+
+        this.eventFactory = factory;
+
+    }
+
+    public void startDocument() throws SAXException {
+
+        super.startDocument();
+
+        namespaceStack.clear();
+
+        eventFactory.setLocation(getCurrentLocation());
+
+        // Encoding and version info will be available only after startElement
+        // is called for first time. So, defer START_DOCUMENT event of StAX till
+        // that point of time.
+        needToCallStartDocument = true;
+    }
+
+    private void writeStartDocument() throws SAXException {
+        try {
+            if (docLocator == null)
+                writer.add(eventFactory.createStartDocument());
+            else {
+                try{
+                    writer.add(eventFactory.createStartDocument(((Locator2)docLocator).getEncoding(),((Locator2)docLocator).getXMLVersion()));
+                } catch(ClassCastException e){
+                    writer.add(eventFactory.createStartDocument());
+                }
+            }
+        } catch (XMLStreamException e) {
+            throw new SAXException(e);
+        }
+        needToCallStartDocument = false;
+    }
+
+    public void endDocument() throws SAXException {
+
+        eventFactory.setLocation(getCurrentLocation());
+
+        try {
+
+            writer.add(eventFactory.createEndDocument());
+
+        } catch (XMLStreamException e) {
+
+            throw new SAXException(e);
+
+        }
+
+        super.endDocument();
+
+        // clear the namespaces
+        namespaceStack.clear();
+
+    }
+
+    public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
+
+        if (needToCallStartDocument) {
+            writeStartDocument();
+        }
+
+        // set document location
+        eventFactory.setLocation(getCurrentLocation());
+
+        // create attribute and namespace events
+        Collection[] events = {null, null};
+        createStartEvents(attributes, events);
+
+        namespaceStack.add(events[0]);
+
+        try {
+
+            String[] qname = {null, null};
+            parseQName(qName, qname);
+
+            writer.add(eventFactory.createStartElement(qname[0], uri,
+                    qname[1], events[1].iterator(), events[0].iterator()));
+
+        } catch (XMLStreamException e) {
+
+            throw new SAXException(e);
+
+        } finally {
+
+            super.startElement(uri, localName, qName, attributes);
+
+        }
+
+    }
+
+    public void endElement(String uri, String localName, String qName)
+            throws SAXException {
+
+        super.endElement(uri, localName, qName);
+
+        eventFactory.setLocation(getCurrentLocation());
+
+        // parse name
+        String[] qname = {null, null};
+        parseQName(qName, qname);
+
+        // get namespaces
+        Collection nsList = (Collection) namespaceStack.remove(namespaceStack.size() - 1);
+        Iterator nsIter = nsList.iterator();
+
+        try {
+
+            writer.add(eventFactory.createEndElement(qname[0], uri, qname[1],
+                    nsIter));
+
+        } catch (XMLStreamException e) {
+
+            throw new SAXException(e);
+
+        }
+
+    }
+
+    public void comment(char[] ch, int start, int length) throws SAXException {
+        if (needToCallStartDocument) {
+            // Drat. We were trying to postpone this until the first element so that we could get
+            // the locator, but we can't output a comment before the start document, so we're just
+            // going to have to do without the locator if it hasn't been set yet.
+            writeStartDocument();
+        }
+
+        super.comment(ch, start, length);
+
+        eventFactory.setLocation(getCurrentLocation());
+        try {
+
+            writer.add(eventFactory.createComment(new String(ch, start,
+                    length)));
+
+        } catch (XMLStreamException e) {
+
+            throw new SAXException(e);
+
+        }
+
+    }
+
+    public void characters(char[] ch, int start, int length)
+            throws SAXException {
+
+        super.characters(ch, start, length);
+
+        try {
+
+            if (!isCDATA) {
+
+                eventFactory.setLocation(getCurrentLocation());
+                writer.add(eventFactory.createCharacters(new String(ch,
+                        start, length)));
+
+            }
+
+        } catch (XMLStreamException e) {
+
+            throw new SAXException(e);
+
+        }
+
+    }
+
+    public void ignorableWhitespace(char[] ch, int start, int length)
+            throws SAXException {
+
+        super.ignorableWhitespace(ch, start, length);
+        characters(ch, start, length);
+
+    }
+
+    public void processingInstruction(String target, String data)
+            throws SAXException {
+
+        if (needToCallStartDocument) {
+            // Drat. We were trying to postpone this until the first element so that we could get
+            // the locator, but we can't output a PI before the start document, so we're just
+            // going to have to do without the locator if it hasn't been set yet.
+            writeStartDocument();
+        }
+
+        super.processingInstruction(target, data);
+        try {
+
+            writer.add(eventFactory.createProcessingInstruction(target, data));
+
+        } catch (XMLStreamException e) {
+
+            throw new SAXException(e);
+
+        }
+
+    }
+
+    public void endCDATA() throws SAXException {
+
+        eventFactory.setLocation(getCurrentLocation());
+        try {
+
+            writer.add(eventFactory.createCData(CDATABuffer.toString()));
+
+        } catch (XMLStreamException e) {
+
+            throw new SAXException(e);
+
+        }
+
+        super.endCDATA();
+
+    }
+
+
+    protected void createStartEvents(Attributes attributes, Collection[] events) {
+
+        Map nsMap = null;
+        List attrs = null;
+
+        // create namespaces
+        if (namespaces != null) {
+            final int nDecls = namespaces.size();
+            for (int i = 0; i < nDecls; i++) {
+                final String prefix = (String) namespaces.elementAt(i++);
+                String uri = (String) namespaces.elementAt(i);
+                Namespace ns = createNamespace(prefix, uri);
+                if (nsMap == null) {
+                    nsMap = new HashMap();
+                }
+                nsMap.put(prefix, ns);
+            }
+        }
+
+        // create attributes
+        String[] qname = {null, null};
+        for (int i = 0, s = attributes.getLength(); i < s; i++) {
+
+            parseQName(attributes.getQName(i), qname);
+
+            String attrPrefix = qname[0];
+            String attrLocal = qname[1];
+
+            String attrQName = attributes.getQName(i);
+            String attrValue = attributes.getValue(i);
+            String attrURI = attributes.getURI(i);
+
+            if ("xmlns".equals(attrQName) || "xmlns".equals(attrPrefix)) {
+                // namespace declaration disguised as an attribute. If the
+                // namespace has already been declared, skip it, otherwise
+                // write it as an namespace
+                if (nsMap == null) {
+                    nsMap = new HashMap();
+                }
+
+                if (!nsMap.containsKey(attrLocal)) {
+                    Namespace ns = createNamespace(attrLocal, attrValue);
+                    nsMap.put(attrLocal, ns);
+                }
+
+            } else {
+
+                Attribute attribute;
+                if (attrPrefix.length() > 0) {
+
+                    attribute = eventFactory.createAttribute(attrPrefix,
+                            attrURI, attrLocal, attrValue);
+
+                } else {
+
+                    attribute = eventFactory.createAttribute(attrLocal,
+                            attrValue);
+
+                }
+
+                if (attrs == null) {
+
+                    attrs = new ArrayList();
+
+                }
+                attrs.add(attribute);
+
+            }
+        }
+
+        events[0] = (nsMap == null ? Collections.EMPTY_LIST : nsMap.values());
+        events[1] = (attrs == null ? Collections.EMPTY_LIST : attrs);
+
+    }
+
+    protected Namespace createNamespace(String prefix, String uri) {
+
+        if (prefix == null || prefix.length() == 0) {
+
+            return eventFactory.createNamespace(uri);
+
+        } else {
+
+            return eventFactory.createNamespace(prefix, uri);
+
+        }
+
+    }
+
+}