Initial revision
From-SVN: r102074
This commit is contained in:
Tom Tromey
@@ -0,0 +1,574 @@
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/* DomLSParser.java --
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Copyright (C) 1999,2000,2001 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
|
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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||||
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.
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||||
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||||
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
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||||
02110-1301 USA.
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||||
Linking this library statically or dynamically with other modules is
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||||
making a combined work based on this library. Thus, the terms and
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||||
conditions of the GNU General Public License cover the whole
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||||
combination.
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As a special exception, the copyright holders of this library give you
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||||
permission to link this library with independent modules to produce an
|
||||
executable, regardless of the license terms of these independent
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||||
modules, and to copy and distribute the resulting executable under
|
||||
terms of your choice, provided that you also meet, for each linked
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||||
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
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||||
this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package gnu.xml.dom.ls;
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import java.io.File;
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import java.io.InputStream;
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import java.io.IOException;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.util.Arrays;
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import java.util.List;
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import javax.xml.parsers.ParserConfigurationException;
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import javax.xml.parsers.SAXParser;
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import javax.xml.parsers.SAXParserFactory;
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import org.w3c.dom.Document;
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import org.w3c.dom.DOMConfiguration;
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import org.w3c.dom.DOMException;
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import org.w3c.dom.DOMStringList;
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import org.w3c.dom.Node;
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import org.w3c.dom.ls.DOMImplementationLS;
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import org.w3c.dom.ls.LSException;
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import org.w3c.dom.ls.LSInput;
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import org.w3c.dom.ls.LSParser;
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import org.w3c.dom.ls.LSParserFilter;
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import org.xml.sax.EntityResolver;
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import org.xml.sax.ErrorHandler;
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import org.xml.sax.InputSource;
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import org.xml.sax.SAXException;
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import org.xml.sax.SAXNotRecognizedException;
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import org.xml.sax.SAXParseException;
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import org.xml.sax.XMLReader;
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import gnu.xml.dom.DomDocument;
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import gnu.xml.dom.DomDOMException;
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/**
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* Parser implementation for GNU DOM.
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*
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* @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
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*/
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public class DomLSParser
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implements LSParser, DOMConfiguration, DOMStringList, ErrorHandler
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{
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private static final List SUPPORTED_PARAMETERS
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= Arrays.asList(new String[] { "cdata-sections",
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"comments",
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"element-content-whitespace",
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"namespaces",
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"expand-entity-references",
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"coalescing",
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"validating",
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"xinclude-aware",
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"entity-resolver",
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"error-handler" });
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private LSParserFilter filter;
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private final boolean async;
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private String schemaType;
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private SAXEventSink eventSink;
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private SAXParserFactory factory;
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private XMLReader reader;
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private boolean namespaceAware = true;
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private boolean ignoreWhitespace;
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private boolean expandEntityReferences;
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private boolean ignoreComments;
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private boolean coalescing;
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private boolean validating;
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private boolean xIncludeAware;
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private EntityResolver entityResolver;
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private ErrorHandler errorHandler;
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public DomLSParser(short mode, String schemaType)
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throws DOMException
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{
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switch (mode)
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{
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case DOMImplementationLS.MODE_ASYNCHRONOUS:
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async = true;
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break;
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case DOMImplementationLS.MODE_SYNCHRONOUS:
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async = false;
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break;
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default:
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throw new DomDOMException(DOMException.NOT_SUPPORTED_ERR);
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}
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// TODO schemaType
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this.schemaType = schemaType;
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factory = SAXParserFactory.newInstance();
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}
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// -- LSParser --
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public DOMConfiguration getDomConfig()
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{
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return this;
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}
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public LSParserFilter getFilter()
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{
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return filter;
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}
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public void setFilter(LSParserFilter filter)
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{
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this.filter = filter;
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}
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public boolean getAsync()
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{
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return async;
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}
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public boolean getBusy()
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{
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return eventSink != null;
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}
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public Document parse(LSInput input)
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throws DOMException, LSException
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{
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if (async)
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{
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return doParse(input);
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}
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else
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{
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synchronized (this)
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{
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return doParse(input);
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}
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}
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}
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public Document parseURI(String uri)
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throws DOMException, LSException
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{
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LSInput input = new DomLSInput();
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input.setSystemId(uri);
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return parse(input);
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}
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public Node parseWithContext(LSInput input, Node context, short action)
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throws DOMException, LSException
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{
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Document doc = (context.getNodeType() == Node.DOCUMENT_NODE) ?
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(Document) context : context.getOwnerDocument();
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input.setBaseURI(doc.getDocumentURI());
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// TODO use namespaces defined on context node
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Document ret = parse(input);
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Node root = ret.getDocumentElement();
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root = doc.adoptNode(root);
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switch (action)
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{
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case ACTION_APPEND_AS_CHILDREN:
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context.appendChild(root);
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break;
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case ACTION_REPLACE_CHILDREN:
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Node c1 = context.getFirstChild();
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while (c1 != null)
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{
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Node next = c1.getNextSibling();
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context.removeChild(c1);
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c1 = next;
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}
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context.appendChild(root);
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break;
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case ACTION_INSERT_BEFORE:
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Node p1 = context.getParentNode();
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p1.insertBefore(root, context);
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break;
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case ACTION_INSERT_AFTER:
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Node p2 = context.getParentNode();
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Node r1 = context.getNextSibling();
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if (r1 == null)
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{
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p2.appendChild(root);
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}
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else
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{
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p2.insertBefore(root, r1);
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}
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break;
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case ACTION_REPLACE:
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Node p3 = context.getParentNode();
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Node r2 = context.getNextSibling();
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p3.removeChild(context);
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if (r2 == null)
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{
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p3.appendChild(root);
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}
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else
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{
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p3.insertBefore(root, r2);
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}
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break;
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}
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return root;
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}
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public void abort()
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{
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if (eventSink != null)
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{
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eventSink.interrupt();
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}
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}
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private Document doParse(LSInput input)
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throws DOMException, LSException
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{
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// create event sink
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if (eventSink != null)
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{
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throw new LSException(LSException.PARSE_ERR, "parse in progress");
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}
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InputSource source = getInputSource(input);
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eventSink = (filter == null) ? new SAXEventSink() :
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new FilteredSAXEventSink(filter);
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// configure sink
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eventSink.namespaceAware = namespaceAware;
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eventSink.ignoreWhitespace = ignoreWhitespace;
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eventSink.expandEntityReferences = expandEntityReferences;
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eventSink.ignoreComments = ignoreComments;
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eventSink.coalescing = coalescing;
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// get and configure reader
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XMLReader reader = getXMLReader();
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try
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{
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reader.setContentHandler(eventSink);
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reader.setDTDHandler(eventSink);
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reader.setProperty("http://xml.org/sax/properties/lexical-handler",
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eventSink);
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reader.setProperty("http://xml.org/sax/properties/declaration-handler",
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eventSink);
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reader.setFeature("http://xml.org/sax/features/namespaces",
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namespaceAware);
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reader.setFeature("http://xml.org/sax/features/namespace-prefixes",
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true);
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reader.setFeature("http://xml.org/sax/features/validation",
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validating);
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try
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{
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reader.setFeature("http://xml.org/sax/features/use-attributes2",
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true);
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}
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catch (SAXNotRecognizedException e)
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{
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// ignore
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}
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try
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{
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reader.setFeature("http://xml.org/sax/features/external-general-entities",
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true);
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}
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catch (SAXNotRecognizedException e)
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{
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// ignore
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}
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reader.setEntityResolver(entityResolver);
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reader.setErrorHandler(errorHandler);
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// parse
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reader.parse(source);
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}
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catch (DOMException e)
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{
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reader = null;
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eventSink = null;
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throw e;
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}
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catch (SAXException e)
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{
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reader = null;
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eventSink = null;
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throw new DomLSException(LSException.PARSE_ERR, e);
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}
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catch (IOException e)
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{
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reader = null;
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eventSink = null;
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throw new DomLSException(LSException.PARSE_ERR, e);
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}
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// return document
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Document ret = eventSink.doc;
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String systemId = input.getSystemId();
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if (systemId != null && ret instanceof DomDocument)
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{
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((DomDocument) ret).setDocumentURI(systemId);
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}
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eventSink = null;
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return ret;
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}
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private XMLReader getXMLReader()
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throws LSException
|
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{
|
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if (reader == null)
|
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{
|
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factory.setNamespaceAware(namespaceAware);
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factory.setValidating(validating);
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factory.setXIncludeAware(xIncludeAware);
|
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try
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||||
{
|
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SAXParser parser = factory.newSAXParser();
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reader = parser.getXMLReader();
|
||||
}
|
||||
catch (ParserConfigurationException e)
|
||||
{
|
||||
throw new DomLSException(LSException.PARSE_ERR, e);
|
||||
}
|
||||
catch (SAXException e)
|
||||
{
|
||||
throw new DomLSException(LSException.PARSE_ERR, e);
|
||||
}
|
||||
}
|
||||
return reader;
|
||||
}
|
||||
|
||||
private InputSource getInputSource(LSInput input)
|
||||
throws LSException
|
||||
{
|
||||
InputSource source = null;
|
||||
String systemId = input.getSystemId();
|
||||
InputStream in = input.getByteStream();
|
||||
if (in != null)
|
||||
{
|
||||
source = new InputSource(in);
|
||||
source.setSystemId(systemId);
|
||||
}
|
||||
if (source == null && entityResolver != null)
|
||||
{
|
||||
String publicId = input.getPublicId();
|
||||
try
|
||||
{
|
||||
source = entityResolver.resolveEntity(publicId, systemId);
|
||||
}
|
||||
catch (SAXException e)
|
||||
{
|
||||
throw new DomLSException(LSException.PARSE_ERR, e);
|
||||
}
|
||||
catch (IOException e)
|
||||
{
|
||||
throw new DomLSException(LSException.PARSE_ERR, e);
|
||||
}
|
||||
}
|
||||
if (source == null)
|
||||
{
|
||||
URL url = null;
|
||||
String base = input.getBaseURI();
|
||||
try
|
||||
{
|
||||
try
|
||||
{
|
||||
URL baseURL = (base == null) ? null : new URL(base);
|
||||
url = (baseURL == null) ? new URL(systemId) :
|
||||
new URL(baseURL, systemId);
|
||||
}
|
||||
catch (MalformedURLException e)
|
||||
{
|
||||
File baseFile = (base == null) ? null : new File(base);
|
||||
url = (baseFile == null) ? new File(systemId).toURL() :
|
||||
new File(baseFile, systemId).toURL();
|
||||
}
|
||||
in = url.openStream();
|
||||
systemId = url.toString();
|
||||
source = new InputSource(in);
|
||||
source.setSystemId(systemId);
|
||||
}
|
||||
catch (IOException e)
|
||||
{
|
||||
throw new DomLSException(LSException.PARSE_ERR, e);
|
||||
}
|
||||
}
|
||||
return source;
|
||||
}
|
||||
|
||||
// -- DOMConfiguration --
|
||||
|
||||
public void setParameter(String name, Object value)
|
||||
throws DOMException
|
||||
{
|
||||
name = name.toLowerCase();
|
||||
if ("cdata-sections".equals(name))
|
||||
{
|
||||
coalescing = !((Boolean) value).booleanValue();
|
||||
}
|
||||
else if ("comments".equals(name))
|
||||
{
|
||||
ignoreComments = !((Boolean) value).booleanValue();
|
||||
}
|
||||
else if ("element-content-whitespace".equals(name))
|
||||
{
|
||||
ignoreWhitespace = !((Boolean) value).booleanValue();
|
||||
}
|
||||
else if ("namespaces".equals(name))
|
||||
{
|
||||
namespaceAware = ((Boolean) value).booleanValue();
|
||||
}
|
||||
else if ("expand-entity-references".equals(name))
|
||||
{
|
||||
expandEntityReferences = ((Boolean) value).booleanValue();
|
||||
}
|
||||
else if ("coalescing".equals(name))
|
||||
{
|
||||
coalescing = ((Boolean) value).booleanValue();
|
||||
}
|
||||
else if ("validating".equals(name))
|
||||
{
|
||||
validating = ((Boolean) value).booleanValue();
|
||||
}
|
||||
else if ("xinclude-aware".equals(name))
|
||||
{
|
||||
xIncludeAware = ((Boolean) value).booleanValue();
|
||||
}
|
||||
else if ("entity-resolver".equals(name))
|
||||
{
|
||||
entityResolver = (EntityResolver) value;
|
||||
}
|
||||
else if ("error-handler".equals(name))
|
||||
{
|
||||
errorHandler = (ErrorHandler) value;
|
||||
}
|
||||
else
|
||||
{
|
||||
throw new DomDOMException(DOMException.NOT_SUPPORTED_ERR);
|
||||
}
|
||||
// invalidate reader, a new one will be created
|
||||
reader = null;
|
||||
}
|
||||
|
||||
public Object getParameter(String name)
|
||||
throws DOMException
|
||||
{
|
||||
name = name.toLowerCase();
|
||||
if ("cdata-sections".equals(name))
|
||||
{
|
||||
return coalescing ? Boolean.FALSE : Boolean.TRUE;
|
||||
}
|
||||
else if ("comments".equals(name))
|
||||
{
|
||||
return ignoreComments ? Boolean.FALSE : Boolean.TRUE;
|
||||
}
|
||||
else if ("element-content-whitespace".equals(name))
|
||||
{
|
||||
return ignoreWhitespace ? Boolean.FALSE : Boolean.TRUE;
|
||||
}
|
||||
else if ("namespaces".equals(name))
|
||||
{
|
||||
return namespaceAware ? Boolean.TRUE : Boolean.FALSE;
|
||||
}
|
||||
else if ("expand-entity-references".equals(name))
|
||||
{
|
||||
return expandEntityReferences ? Boolean.TRUE : Boolean.FALSE;
|
||||
}
|
||||
else if ("coalescing".equals(name))
|
||||
{
|
||||
return coalescing ? Boolean.TRUE : Boolean.FALSE;
|
||||
}
|
||||
else if ("validating".equals(name))
|
||||
{
|
||||
return validating ? Boolean.TRUE : Boolean.FALSE;
|
||||
}
|
||||
else if ("xinclude-aware".equals(name))
|
||||
{
|
||||
return xIncludeAware ? Boolean.TRUE : Boolean.FALSE;
|
||||
}
|
||||
else if ("entity-resolver".equals(name))
|
||||
{
|
||||
return entityResolver;
|
||||
}
|
||||
else if ("error-handler".equals(name))
|
||||
{
|
||||
return errorHandler;
|
||||
}
|
||||
else
|
||||
{
|
||||
throw new DomDOMException(DOMException.NOT_SUPPORTED_ERR);
|
||||
}
|
||||
}
|
||||
|
||||
public boolean canSetParameter(String name, Object value)
|
||||
{
|
||||
return contains(name);
|
||||
}
|
||||
|
||||
public DOMStringList getParameterNames()
|
||||
{
|
||||
return this;
|
||||
}
|
||||
|
||||
// -- DOMStringList --
|
||||
|
||||
public String item(int i)
|
||||
{
|
||||
return (String) SUPPORTED_PARAMETERS.get(i);
|
||||
}
|
||||
|
||||
public int getLength()
|
||||
{
|
||||
return SUPPORTED_PARAMETERS.size();
|
||||
}
|
||||
|
||||
public boolean contains(String str)
|
||||
{
|
||||
return SUPPORTED_PARAMETERS.contains(str);
|
||||
}
|
||||
|
||||
// -- ErrorHandler --
|
||||
|
||||
public void warning(SAXParseException e)
|
||||
throws SAXException
|
||||
{
|
||||
if (errorHandler != null)
|
||||
{
|
||||
errorHandler.warning(e);
|
||||
}
|
||||
}
|
||||
|
||||
public void error(SAXParseException e)
|
||||
throws SAXException
|
||||
{
|
||||
if (errorHandler != null)
|
||||
{
|
||||
errorHandler.error(e);
|
||||
}
|
||||
}
|
||||
|
||||
public void fatalError(SAXParseException e)
|
||||
throws SAXException
|
||||
{
|
||||
if (errorHandler != null)
|
||||
{
|
||||
errorHandler.fatalError(e);
|
||||
}
|
||||
abort();
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user