--- /dev/null
+/* 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);
+ }
+ }
+
+}
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