RELEASE_2_1_13/src/deprecated/java/org/apache/cocoon/transformation/helpers/MirrorRecorder.java - cocoon - Git at Google

 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.
  * The ASF licenses this file to You under the Apache License, Version 2.0
  * (the "License"); you may not use this file except in compliance with
  * the License.  You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * 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 org.apache.cocoon.transformation.helpers;

 import java.util.ArrayList;
 import java.util.Map;

 import org.w3c.dom.NamedNodeMap;
 import org.w3c.dom.Node;
 import org.w3c.dom.NodeList;

 import org.xml.sax.Attributes;
 import org.xml.sax.ContentHandler;
 import org.xml.sax.SAXException;
 import org.xml.sax.helpers.AttributesImpl;

 /**
  * Consume elements start/end and characters events and reproduce them.
  *
  * WARNING: THIS CLASS DOES NOT WORK PROPERLY WITH NAMESPACES
  *
  * @deprecated The only user of this class (I18nTransformer) now uses ParamSaxBuffer
  * @author <a href="mailto:mattam@netcourrier.com">Matthieu Sozeau</a>
  * @version CVS $Id$
  */
 public class MirrorRecorder
     extends NOPRecorder
     implements EventRecorder, Cloneable {

     private ArrayList events;

     // Used for indexing (parameters)
     static class NullEvent implements EventRecorder {
         private String s;

         public NullEvent(String s) {
             this.s = s;
         }

         public String name() {
             return s;
         }

         public void send(ContentHandler handler)
         throws SAXException {
         }

         public Object clone() {
             return new NullEvent(s);
         }

         public String toString() {
             return "{" + s + "}";
         }
     }

     static class StartEvent implements EventRecorder {
         private String uri, name, raw;
         private Attributes attr;

         public StartEvent(String namespace, String name, String raw,
                           Attributes attr) {
             this.uri = namespace;
             this.name = name;
             this.raw = raw;
             this.attr = new AttributesImpl(attr);
         }

         public void send(ContentHandler handler)
         throws SAXException {
             handler.startElement(uri, name, raw, attr);
         }

         public Object clone() {
             return new StartEvent(uri, name, raw, attr);
         }

         public String toString() {
             StringBuffer str = new StringBuffer("<" + raw);
             if (attr != null) {
                 for(int i = 0; i < attr.getLength(); ++i) {
                     str.append(" " + attr.getQName(i) + "=\"" + attr.getValue(i) + "\"");
                 }
             }

             return str.append(">").toString();
         }
     }

     static class EndEvent implements EventRecorder {
         private String uri, name, raw;

         public EndEvent(String namespace, String name, String raw) {
             this.uri = namespace;
             this.name = name;
             this.raw = raw;
         }

         public Object clone() {
             return new EndEvent(uri, name, raw);
         }

         public void send(ContentHandler handler)
         throws SAXException {
             handler.endElement(uri, name, raw);
         }

         public String toString() {
             return "</" + raw + ">";
         }
     }

     static class CharacterEvent implements EventRecorder {
         private String ch;

         public CharacterEvent(char ary[], int start, int length) {
             ch = new String(ary, start, length);
         }

         public CharacterEvent(String ch) {
             this.ch = ch;
         }

         public Object clone() {
             return new CharacterEvent(ch);
         }

         public void send(ContentHandler handler)
         throws SAXException {
             handler.characters(ch.toCharArray(), 0, ch.length());
         }

         public String toString() {
             return ch;
         }
     }


     public MirrorRecorder() {
         this.events = new ArrayList();
     }

     public MirrorRecorder(Node n) {
         this.events = new ArrayList();

         if(n != null) {
             NodeList childs = n.getChildNodes();
             for(int i = 0; i < childs.getLength(); ++i) {
                 try {
                     nodeToEvents(childs.item(i));
                 } catch (SAXException e) {
                     // FIXME: what to do?
                 }
             }
         }
     }

     private void nodeToEvents(Node n) throws SAXException {
         switch(n.getNodeType()) {
             case Node.ELEMENT_NODE:
                 Attributes attrs;
                 if(n.getAttributes() instanceof Attributes) {
                     attrs = (Attributes) n.getAttributes();
                 } else {
                     NamedNodeMap map = n.getAttributes();
                     attrs = new AttributesImpl();

                     for(int i = 0; i < map.getLength(); ++i) {
                         Node node = map.item(i);
                         final String ns = node.getNamespaceURI() == null? "" : node.getNamespaceURI();
                         final String ln = node.getLocalName() == null? node.getNodeName() : node.getLocalName();
                         ((AttributesImpl) attrs).addAttribute(ns,
                                                               ln,
                                                               node.getNodeName(),
                                                               "CDATA",
                                                               node.getNodeValue());
                     }
                 }

                 final String ns = n.getNamespaceURI() == null? "" : n.getNamespaceURI();
                 final String ln = n.getLocalName() == null? n.getNodeName() : n.getLocalName();
                 startElement(ns, ln, n.getNodeName(), attrs);
                 if (n.hasChildNodes()) {
                     NodeList childs = n.getChildNodes();
                     for(int i = 0; i < childs.getLength(); ++i) {
                         nodeToEvents(childs.item(i));
                     }
                 }

                 endElement(ns, ln, n.getNodeName());
                 break;
             case Node.CDATA_SECTION_NODE:
             case Node.TEXT_NODE:
                 characters(n.getNodeValue());
                 break;
         }
     }

     public MirrorRecorder(MirrorRecorder n) {
         this.events = new ArrayList();
         for(int i = 0; i < n.events.size(); ++i) {
             EventRecorder e = (EventRecorder) n.events.get(i);
             this.events.add(e.clone());
         }
     }

     public Object clone() {
         return new MirrorRecorder(this);
     }

     public void startElement(String namespace, String name, String raw,
                              Attributes attr)
             throws SAXException {
         events.add(new StartEvent(namespace, name, raw, attr));
     }

     public void endElement(String namespace, String name, String raw)
             throws SAXException {
         events.add(new EndEvent(namespace, name, raw));
     }

     public void characters(char ary[], int start, int length)
             throws SAXException {
         characters(new String(ary, start, length));
     }

     public void characters(String tmp) throws SAXException {
         int i = 0, j = 0;

         while(tmp.length() > 0) {
             i = tmp.indexOf('{', i);
             if(i == -1) {
                 events.add(new CharacterEvent(tmp));
                 return;
             } else {
                 if(i >= 0) {
                     events.add(new CharacterEvent(tmp.substring(0, i)));
                 }

                 j = tmp.indexOf('}', i);
                 if(j != -1) {
                     events.add(new NullEvent(tmp.substring(i + 1, j)));
                     tmp = tmp.substring(j + 1, tmp.length());
                     i = 0;
                 }
             }
         }
     }

     public void send(ContentHandler handler) throws SAXException {
         for(int i = 0; i < events.size(); ++i) {
             ((EventRecorder) (events.get(i))).send(handler);
         }
     }

     public void send(ContentHandler handler, Map params) throws SAXException
     {
         EventRecorder param;

         for(int i = 0; i < events.size(); ++i) {
             if(events.get(i) instanceof NullEvent) {
                 param = (EventRecorder) params.get(((NullEvent) events.get(i)).name());
                 if(param != null)
                     param.send(handler);
             } else {
                 ((EventRecorder) (events.get(i))).send(handler);
             }
         }
     }

     public String text() {
         StringBuffer s = new StringBuffer();

         for(int i = 0; i < events.size(); ++i) {
             s.append(events.get(i).toString());
         }
         return(s.toString());
     }

     public String toString() {
         StringBuffer s = new StringBuffer("MirrorRecorder: ");
         s.append(String.valueOf(events.size()) + " event(s)");
         s.append("\ntext: ");
         for(int i = 0; i < events.size(); ++i) {
             if(events.get(i) instanceof CharacterEvent) {
                 s.append(events.get(i).toString());
             }
         }

         return s.toString();
     }

     public void recycle() {
         events.clear();
     }

     public boolean empty() {
         return events.size() == 0;
     }
 }
	/*
	* Licensed to the Apache Software Foundation (ASF) under one or more
	* contributor license agreements. See the NOTICE file distributed with
	* this work for additional information regarding copyright ownership.
	* The ASF licenses this file to You under the Apache License, Version 2.0
	* (the "License"); you may not use this file except in compliance with
	* the License. You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* 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 org.apache.cocoon.transformation.helpers;

	import java.util.ArrayList;
	import java.util.Map;

	import org.w3c.dom.NamedNodeMap;
	import org.w3c.dom.Node;
	import org.w3c.dom.NodeList;

	import org.xml.sax.Attributes;
	import org.xml.sax.ContentHandler;
	import org.xml.sax.SAXException;
	import org.xml.sax.helpers.AttributesImpl;

	/**
	* Consume elements start/end and characters events and reproduce them.
	*
	* WARNING: THIS CLASS DOES NOT WORK PROPERLY WITH NAMESPACES
	*
	* @deprecated The only user of this class (I18nTransformer) now uses ParamSaxBuffer
	* @author <a href="mailto:mattam@netcourrier.com">Matthieu Sozeau</a>
	* @version CVS $Id$
	*/
	public class MirrorRecorder
	extends NOPRecorder
	implements EventRecorder, Cloneable {

	private ArrayList events;

	// Used for indexing (parameters)
	static class NullEvent implements EventRecorder {
	private String s;

	public NullEvent(String s) {
	this.s = s;
	}

	public String name() {
	return s;
	}

	public void send(ContentHandler handler)
	throws SAXException {
	}

	public Object clone() {
	return new NullEvent(s);
	}

	public String toString() {
	return "{" + s + "}";
	}
	}

	static class StartEvent implements EventRecorder {
	private String uri, name, raw;
	private Attributes attr;

	public StartEvent(String namespace, String name, String raw,
	Attributes attr) {
	this.uri = namespace;
	this.name = name;
	this.raw = raw;
	this.attr = new AttributesImpl(attr);
	}

	public void send(ContentHandler handler)
	throws SAXException {
	handler.startElement(uri, name, raw, attr);
	}

	public Object clone() {
	return new StartEvent(uri, name, raw, attr);
	}

	public String toString() {
	StringBuffer str = new StringBuffer("<" + raw);
	if (attr != null) {
	for(int i = 0; i < attr.getLength(); ++i) {
	str.append(" " + attr.getQName(i) + "=\"" + attr.getValue(i) + "\"");
	}
	}

	return str.append(">").toString();
	}
	}

	static class EndEvent implements EventRecorder {
	private String uri, name, raw;

	public EndEvent(String namespace, String name, String raw) {
	this.uri = namespace;
	this.name = name;
	this.raw = raw;
	}

	public Object clone() {
	return new EndEvent(uri, name, raw);
	}

	public void send(ContentHandler handler)
	throws SAXException {
	handler.endElement(uri, name, raw);
	}

	public String toString() {
	return "</" + raw + ">";
	}
	}

	static class CharacterEvent implements EventRecorder {
	private String ch;

	public CharacterEvent(char ary[], int start, int length) {
	ch = new String(ary, start, length);
	}

	public CharacterEvent(String ch) {
	this.ch = ch;
	}

	public Object clone() {
	return new CharacterEvent(ch);
	}

	public void send(ContentHandler handler)
	throws SAXException {
	handler.characters(ch.toCharArray(), 0, ch.length());
	}

	public String toString() {
	return ch;
	}
	}


	public MirrorRecorder() {
	this.events = new ArrayList();
	}

	public MirrorRecorder(Node n) {
	this.events = new ArrayList();

	if(n != null) {
	NodeList childs = n.getChildNodes();
	for(int i = 0; i < childs.getLength(); ++i) {
	try {
	nodeToEvents(childs.item(i));
	} catch (SAXException e) {
	// FIXME: what to do?
	}
	}
	}
	}

	private void nodeToEvents(Node n) throws SAXException {
	switch(n.getNodeType()) {
	case Node.ELEMENT_NODE:
	Attributes attrs;
	if(n.getAttributes() instanceof Attributes) {
	attrs = (Attributes) n.getAttributes();
	} else {
	NamedNodeMap map = n.getAttributes();
	attrs = new AttributesImpl();

	for(int i = 0; i < map.getLength(); ++i) {
	Node node = map.item(i);
	final String ns = node.getNamespaceURI() == null? "" : node.getNamespaceURI();
	final String ln = node.getLocalName() == null? node.getNodeName() : node.getLocalName();
	((AttributesImpl) attrs).addAttribute(ns,
	ln,
	node.getNodeName(),
	"CDATA",
	node.getNodeValue());
	}
	}

	final String ns = n.getNamespaceURI() == null? "" : n.getNamespaceURI();
	final String ln = n.getLocalName() == null? n.getNodeName() : n.getLocalName();
	startElement(ns, ln, n.getNodeName(), attrs);
	if (n.hasChildNodes()) {
	NodeList childs = n.getChildNodes();
	for(int i = 0; i < childs.getLength(); ++i) {
	nodeToEvents(childs.item(i));
	}
	}

	endElement(ns, ln, n.getNodeName());
	break;
	case Node.CDATA_SECTION_NODE:
	case Node.TEXT_NODE:
	characters(n.getNodeValue());
	break;
	}
	}

	public MirrorRecorder(MirrorRecorder n) {
	this.events = new ArrayList();
	for(int i = 0; i < n.events.size(); ++i) {
	EventRecorder e = (EventRecorder) n.events.get(i);
	this.events.add(e.clone());
	}
	}

	public Object clone() {
	return new MirrorRecorder(this);
	}

	public void startElement(String namespace, String name, String raw,
	Attributes attr)
	throws SAXException {
	events.add(new StartEvent(namespace, name, raw, attr));
	}

	public void endElement(String namespace, String name, String raw)
	throws SAXException {
	events.add(new EndEvent(namespace, name, raw));
	}

	public void characters(char ary[], int start, int length)
	throws SAXException {
	characters(new String(ary, start, length));
	}

	public void characters(String tmp) throws SAXException {
	int i = 0, j = 0;

	while(tmp.length() > 0) {
	i = tmp.indexOf('{', i);
	if(i == -1) {
	events.add(new CharacterEvent(tmp));
	return;
	} else {
	if(i >= 0) {
	events.add(new CharacterEvent(tmp.substring(0, i)));
	}

	j = tmp.indexOf('}', i);
	if(j != -1) {
	events.add(new NullEvent(tmp.substring(i + 1, j)));
	tmp = tmp.substring(j + 1, tmp.length());
	i = 0;
	}
	}
	}
	}

	public void send(ContentHandler handler) throws SAXException {
	for(int i = 0; i < events.size(); ++i) {
	((EventRecorder) (events.get(i))).send(handler);
	}
	}

	public void send(ContentHandler handler, Map params) throws SAXException
	{
	EventRecorder param;

	for(int i = 0; i < events.size(); ++i) {
	if(events.get(i) instanceof NullEvent) {
	param = (EventRecorder) params.get(((NullEvent) events.get(i)).name());
	if(param != null)
	param.send(handler);
	} else {
	((EventRecorder) (events.get(i))).send(handler);
	}
	}
	}

	public String text() {
	StringBuffer s = new StringBuffer();

	for(int i = 0; i < events.size(); ++i) {
	s.append(events.get(i).toString());
	}
	return(s.toString());
	}

	public String toString() {
	StringBuffer s = new StringBuffer("MirrorRecorder: ");
	s.append(String.valueOf(events.size()) + " event(s)");
	s.append("\ntext: ");
	for(int i = 0; i < events.size(); ++i) {
	if(events.get(i) instanceof CharacterEvent) {
	s.append(events.get(i).toString());
	}
	}

	return s.toString();
	}

	public void recycle() {
	events.clear();
	}

	public boolean empty() {
	return events.size() == 0;
	}
	}