327 lines
9.5 KiB
Java
327 lines
9.5 KiB
Java
/* GnomeDocumentBuilder.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.libxmlj.dom;
|
|
|
|
import java.io.InputStream;
|
|
import java.io.IOException;
|
|
import java.net.URL;
|
|
import javax.xml.parsers.DocumentBuilder;
|
|
|
|
import org.w3c.dom.Document;
|
|
import org.w3c.dom.DocumentType;
|
|
import org.w3c.dom.DOMImplementation;
|
|
import org.xml.sax.EntityResolver;
|
|
import org.xml.sax.ErrorHandler;
|
|
import org.xml.sax.InputSource;
|
|
import org.xml.sax.Locator;
|
|
import org.xml.sax.SAXException;
|
|
import org.xml.sax.SAXParseException;
|
|
|
|
import gnu.xml.libxmlj.util.NamedInputStream;
|
|
import gnu.xml.libxmlj.util.StandaloneDocumentType;
|
|
import gnu.xml.libxmlj.util.StandaloneLocator;
|
|
import gnu.xml.libxmlj.util.XMLJ;
|
|
|
|
/**
|
|
* A JAXP DOM implementation that uses Gnome libxml2 as the underlying
|
|
* parser and node representation.
|
|
*
|
|
* @author <a href='mailto:dog@gnu.org'>Chris Burdess</a>
|
|
*/
|
|
public class GnomeDocumentBuilder
|
|
extends DocumentBuilder
|
|
implements DOMImplementation
|
|
{
|
|
|
|
static
|
|
{
|
|
XMLJ.init();
|
|
}
|
|
|
|
// -- DocumentBuilder --
|
|
|
|
private boolean validate;
|
|
private boolean coalesce;
|
|
private boolean expandEntities;
|
|
private EntityResolver entityResolver;
|
|
private ErrorHandler errorHandler;
|
|
private boolean seenFatalError;
|
|
|
|
/**
|
|
* Constructs a new validating document builder.
|
|
*/
|
|
public GnomeDocumentBuilder()
|
|
{
|
|
this(true, false, false);
|
|
}
|
|
|
|
/**
|
|
* Constructs a new document builder.
|
|
* @param validate whether to validate during parsing
|
|
* @param coalesce whether to merge CDATA as text nodes
|
|
* @param expandEntities whether to expand entity references
|
|
*/
|
|
public GnomeDocumentBuilder(boolean validate,
|
|
boolean coalesce,
|
|
boolean expandEntities)
|
|
{
|
|
this.validate = validate;
|
|
this.coalesce = coalesce;
|
|
this.expandEntities = expandEntities;
|
|
}
|
|
|
|
public DOMImplementation getDOMImplementation()
|
|
{
|
|
return this;
|
|
}
|
|
|
|
public boolean isNamespaceAware()
|
|
{
|
|
return true;
|
|
}
|
|
|
|
public boolean isValidating()
|
|
{
|
|
return validate;
|
|
}
|
|
|
|
public Document newDocument()
|
|
{
|
|
return createDocument(null, null, null);
|
|
}
|
|
|
|
public Document parse(InputSource input)
|
|
throws SAXException, IOException
|
|
{
|
|
NamedInputStream in = XMLJ.getInputStream(input);
|
|
byte[] detectBuffer = in.getDetectBuffer();
|
|
String publicId = input.getPublicId();
|
|
String systemId = input.getSystemId();
|
|
String base = XMLJ.getBaseURI(systemId);
|
|
// Handle zero-length document
|
|
if (detectBuffer == null)
|
|
{
|
|
throw new SAXParseException("No document element", publicId,
|
|
systemId, 0, 0);
|
|
}
|
|
seenFatalError = false;
|
|
return parseStream(in,
|
|
detectBuffer,
|
|
publicId,
|
|
systemId,
|
|
base,
|
|
validate,
|
|
coalesce,
|
|
expandEntities,
|
|
true, //entityResolver != null,
|
|
errorHandler != null);
|
|
}
|
|
|
|
private native Document parseStream(InputStream in,
|
|
byte[] detectBuffer,
|
|
String publicId,
|
|
String systemId,
|
|
String base,
|
|
boolean validate,
|
|
boolean coalesce,
|
|
boolean expandEntities,
|
|
boolean entityResolver,
|
|
boolean errorHandler);
|
|
|
|
public void setEntityResolver(EntityResolver resolver)
|
|
{
|
|
entityResolver = resolver;
|
|
}
|
|
|
|
public void setErrorHandler(ErrorHandler handler)
|
|
{
|
|
errorHandler = handler;
|
|
}
|
|
|
|
// -- DOMImplementation --
|
|
|
|
public boolean hasFeature(String name, String version)
|
|
{
|
|
if (name.length() == 0)
|
|
{
|
|
return false;
|
|
}
|
|
name = name.toLowerCase();
|
|
if (name.charAt(0) == '+')
|
|
{
|
|
name = name.substring(1);
|
|
}
|
|
|
|
if ("xml".equals(name) || "core".equals(name))
|
|
{
|
|
return (version == null ||
|
|
"".equals(version) ||
|
|
"1.0".equals(version) ||
|
|
"2.0".equals(version) ||
|
|
"3.0".equals(version));
|
|
|
|
}
|
|
else if ("ls".equals(name) || "ls-async".equals(name))
|
|
{
|
|
// TODO
|
|
/*
|
|
return (version == null ||
|
|
"".equals(version) ||
|
|
"3.0".equals(version));
|
|
*/
|
|
return false;
|
|
}
|
|
else if ("traversal".equals(name))
|
|
{
|
|
return (version == null ||
|
|
"".equals(version) ||
|
|
"2.0".equals(version));
|
|
}
|
|
else if ("xpath".equals(name))
|
|
{
|
|
return (version == null ||
|
|
"".equals(version) ||
|
|
"3.0".equals(version));
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// DOM Level 3
|
|
|
|
public Object getFeature(String feature, String version)
|
|
{
|
|
if (hasFeature(feature, version))
|
|
{
|
|
return this;
|
|
}
|
|
return null;
|
|
}
|
|
|
|
public native Document createDocument(String namespaceURI,
|
|
String qualifiedName,
|
|
DocumentType doctype);
|
|
|
|
public DocumentType createDocumentType(String qualifiedName,
|
|
String publicId,
|
|
String systemId)
|
|
{
|
|
return new StandaloneDocumentType(qualifiedName, publicId, systemId);
|
|
}
|
|
|
|
// Callback hooks from JNI
|
|
|
|
private void setDocumentLocator(Object ctx, Object loc)
|
|
{
|
|
// ignore
|
|
}
|
|
|
|
private InputStream resolveEntity(String publicId, String systemId,
|
|
String base)
|
|
throws SAXException, IOException
|
|
{
|
|
String url = XMLJ.getAbsoluteURI(base, systemId);
|
|
InputStream in = null;
|
|
if (entityResolver != null)
|
|
{
|
|
InputSource source = entityResolver.resolveEntity(publicId, url);
|
|
if (source != null)
|
|
{
|
|
in = XMLJ.getInputStream(source);
|
|
}
|
|
}
|
|
if (in == null)
|
|
{
|
|
in = XMLJ.getInputStream(new URL(url));
|
|
}
|
|
return in;
|
|
}
|
|
|
|
private void warning(String message,
|
|
int lineNumber,
|
|
int columnNumber,
|
|
String publicId,
|
|
String systemId)
|
|
throws SAXException
|
|
{
|
|
if (!seenFatalError && errorHandler != null)
|
|
{
|
|
Locator l = new StandaloneLocator(lineNumber,
|
|
columnNumber,
|
|
publicId,
|
|
systemId);
|
|
errorHandler.warning(new SAXParseException(message, l));
|
|
}
|
|
}
|
|
|
|
private void error(String message,
|
|
int lineNumber,
|
|
int columnNumber,
|
|
String publicId,
|
|
String systemId)
|
|
throws SAXException
|
|
{
|
|
if (!seenFatalError && errorHandler != null)
|
|
{
|
|
Locator l = new StandaloneLocator(lineNumber,
|
|
columnNumber,
|
|
publicId,
|
|
systemId);
|
|
errorHandler.error(new SAXParseException(message, l));
|
|
}
|
|
}
|
|
|
|
private void fatalError(String message,
|
|
int lineNumber,
|
|
int columnNumber,
|
|
String publicId,
|
|
String systemId)
|
|
throws SAXException
|
|
{
|
|
if (!seenFatalError && errorHandler != null)
|
|
{
|
|
seenFatalError = true;
|
|
Locator l = new StandaloneLocator(lineNumber,
|
|
columnNumber,
|
|
publicId,
|
|
systemId);
|
|
errorHandler.fatalError(new SAXParseException(message, l));
|
|
}
|
|
}
|
|
|
|
}
|