306 lines
8.3 KiB
Java
306 lines
8.3 KiB
Java
/* SAXSerializer.java --
|
|
Copyright (C) 2004 Free Software Foundation, Inc.
|
|
|
|
This file is part of GNU Classpath.
|
|
|
|
GNU Classpath is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2, or (at your option)
|
|
any later version.
|
|
|
|
GNU Classpath 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 for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GNU Classpath; see the file COPYING. If not, write to the
|
|
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
02110-1301 USA.
|
|
|
|
Linking this library statically or dynamically with other modules is
|
|
making a combined work based on this library. Thus, the terms and
|
|
conditions of the GNU General Public License cover the whole
|
|
combination.
|
|
|
|
As a special exception, the copyright holders of this library give you
|
|
permission to link this library with independent modules to produce an
|
|
executable, regardless of the license terms of these independent
|
|
modules, and to copy and distribute the resulting executable under
|
|
terms of your choice, provided that you also meet, for each linked
|
|
independent module, the terms and conditions of the license of that
|
|
module. An independent module is a module which is not derived from
|
|
or based on this library. If you modify this library, you may extend
|
|
this exception to your version of the library, but you are not
|
|
obligated to do so. If you do not wish to do so, delete this
|
|
exception statement from your version. */
|
|
|
|
package gnu.xml.transform;
|
|
|
|
import java.util.HashMap;
|
|
import java.util.Iterator;
|
|
import java.util.LinkedList;
|
|
import org.w3c.dom.Attr;
|
|
import org.w3c.dom.DocumentType;
|
|
import org.w3c.dom.NamedNodeMap;
|
|
import org.w3c.dom.Node;
|
|
import org.xml.sax.Attributes;
|
|
import org.xml.sax.ContentHandler;
|
|
import org.xml.sax.SAXException;
|
|
import org.xml.sax.ext.LexicalHandler;
|
|
|
|
/**
|
|
* Serializes a DOM node to a sequence of SAX events.
|
|
*
|
|
* @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
|
|
*/
|
|
class SAXSerializer
|
|
implements Attributes
|
|
{
|
|
|
|
transient NamedNodeMap attrs;
|
|
transient LinkedList namespaces = new LinkedList();
|
|
|
|
boolean isDefined(String prefix, String uri)
|
|
{
|
|
for (Iterator i = namespaces.iterator(); i.hasNext(); )
|
|
{
|
|
HashMap ctx = (HashMap) i.next();
|
|
if (uri.equals(ctx.get(prefix)))
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void define(String prefix, String uri)
|
|
{
|
|
for (Iterator i = namespaces.iterator(); i.hasNext(); )
|
|
{
|
|
HashMap ctx = (HashMap) i.next();
|
|
if (ctx.containsKey(prefix))
|
|
{
|
|
HashMap newCtx = new HashMap();
|
|
newCtx.put(prefix, uri);
|
|
namespaces.addFirst(newCtx);
|
|
return;
|
|
}
|
|
}
|
|
HashMap ctx;
|
|
if (namespaces.isEmpty())
|
|
{
|
|
ctx = new HashMap();
|
|
namespaces.add(ctx);
|
|
}
|
|
else
|
|
{
|
|
ctx = (HashMap) namespaces.getFirst();
|
|
}
|
|
ctx.put(prefix, uri);
|
|
}
|
|
|
|
void undefine(String prefix, String uri)
|
|
{
|
|
for (Iterator i = namespaces.iterator(); i.hasNext(); )
|
|
{
|
|
HashMap ctx = (HashMap) i.next();
|
|
if (uri.equals(ctx.get(prefix)))
|
|
{
|
|
ctx.remove(prefix);
|
|
if (ctx.isEmpty())
|
|
{
|
|
namespaces.remove(ctx);
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
public int getLength()
|
|
{
|
|
return attrs.getLength();
|
|
}
|
|
|
|
public String getURI(int index)
|
|
{
|
|
return attrs.item(index).getNamespaceURI();
|
|
}
|
|
|
|
public String getLocalName(int index)
|
|
{
|
|
return attrs.item(index).getLocalName();
|
|
}
|
|
|
|
public String getQName(int index)
|
|
{
|
|
return attrs.item(index).getNodeName();
|
|
}
|
|
|
|
public String getType(int index)
|
|
{
|
|
Attr attr = (Attr) attrs.item(index);
|
|
return attr.isId() ? "ID" : "CDATA";
|
|
}
|
|
|
|
public String getValue(int index)
|
|
{
|
|
return attrs.item(index).getNodeValue();
|
|
}
|
|
|
|
public int getIndex(String uri, String localName)
|
|
{
|
|
int len = attrs.getLength();
|
|
for (int i = 0; i < len; i++)
|
|
{
|
|
Node attr = attrs.item(i);
|
|
String a_uri = attr.getNamespaceURI();
|
|
String a_localName = attr.getLocalName();
|
|
if (((a_uri == null && uri == null) ||
|
|
(a_uri != null && a_uri.equals(uri))) &&
|
|
a_localName.equals(localName))
|
|
{
|
|
return i;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
public int getIndex(String qName)
|
|
{
|
|
int len = attrs.getLength();
|
|
for (int i = 0; i < len; i++)
|
|
{
|
|
Node attr = attrs.item(i);
|
|
String a_name = attr.getNodeName();
|
|
if (a_name.equals(qName))
|
|
{
|
|
return i;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
public String getType(String uri, String localName)
|
|
{
|
|
Attr attr = (Attr) attrs.getNamedItemNS(uri, localName);
|
|
return attr.isId() ? "ID" : "CDATA";
|
|
}
|
|
|
|
public String getType(String qName)
|
|
{
|
|
Attr attr = (Attr) attrs.getNamedItem(qName);
|
|
return attr.isId() ? "ID" : "CDATA";
|
|
}
|
|
|
|
public String getValue(String uri, String localName)
|
|
{
|
|
return attrs.getNamedItemNS(uri, localName).getNodeValue();
|
|
}
|
|
|
|
public String getValue(String qName)
|
|
{
|
|
return attrs.getNamedItem(qName).getNodeValue();
|
|
}
|
|
|
|
void serialize(Node node, ContentHandler ch, LexicalHandler lh)
|
|
throws SAXException
|
|
{
|
|
attrs = node.getAttributes();
|
|
Node children;
|
|
Node next = node.getNextSibling();
|
|
switch (node.getNodeType())
|
|
{
|
|
case Node.ELEMENT_NODE:
|
|
String uri = node.getNamespaceURI();
|
|
String prefix = node.getPrefix();
|
|
boolean defined = isDefined(prefix, uri);
|
|
if (!defined)
|
|
{
|
|
define(prefix, uri);
|
|
ch.startPrefixMapping(prefix, uri);
|
|
}
|
|
String localName = node.getLocalName();
|
|
String qName = node.getNodeName();
|
|
ch.startElement(uri, localName, qName, this);
|
|
children = node.getFirstChild();
|
|
if (children != null)
|
|
{
|
|
serialize(children, ch, lh);
|
|
}
|
|
ch.endElement(uri, localName, qName);
|
|
if (!defined)
|
|
{
|
|
ch.endPrefixMapping(prefix);
|
|
undefine(prefix, uri);
|
|
}
|
|
break;
|
|
case Node.TEXT_NODE:
|
|
char[] chars = node.getNodeValue().toCharArray();
|
|
ch.characters(chars, 0, chars.length);
|
|
break;
|
|
case Node.CDATA_SECTION_NODE:
|
|
char[] cdata = node.getNodeValue().toCharArray();
|
|
if (lh != null)
|
|
{
|
|
lh.startCDATA();
|
|
ch.characters(cdata, 0, cdata.length);
|
|
lh.endCDATA();
|
|
}
|
|
else
|
|
{
|
|
ch.characters(cdata, 0, cdata.length);
|
|
}
|
|
break;
|
|
case Node.COMMENT_NODE:
|
|
if (lh != null)
|
|
{
|
|
char[] comment = node.getNodeValue().toCharArray();
|
|
lh.comment(comment, 0, comment.length);
|
|
}
|
|
break;
|
|
case Node.DOCUMENT_NODE:
|
|
case Node.DOCUMENT_FRAGMENT_NODE:
|
|
ch.startDocument();
|
|
children = node.getFirstChild();
|
|
if (children != null)
|
|
{
|
|
serialize(children, ch, lh);
|
|
}
|
|
ch.endDocument();
|
|
break;
|
|
case Node.DOCUMENT_TYPE_NODE:
|
|
if (lh != null)
|
|
{
|
|
DocumentType doctype = (DocumentType) node;
|
|
String publicId = doctype.getPublicId();
|
|
String systemId = doctype.getSystemId();
|
|
lh.startDTD(node.getNodeName(), publicId, systemId);
|
|
NamedNodeMap entities = doctype.getEntities();
|
|
int len = entities.getLength();
|
|
for (int i = 0; i < len; i++)
|
|
{
|
|
Node entity = entities.item(i);
|
|
String entityName = entity.getNodeName();
|
|
lh.startEntity(entityName);
|
|
lh.endEntity(entityName);
|
|
}
|
|
lh.endDTD();
|
|
}
|
|
break;
|
|
case Node.PROCESSING_INSTRUCTION_NODE:
|
|
ch.processingInstruction(node.getNodeName(), node.getNodeValue());
|
|
break;
|
|
case Node.ENTITY_REFERENCE_NODE:
|
|
ch.skippedEntity(node.getNodeName());
|
|
break;
|
|
}
|
|
attrs = null;
|
|
if (next != null)
|
|
{
|
|
serialize(next, ch, lh);
|
|
}
|
|
}
|
|
|
|
}
|