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-/* 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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