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/*
* $Id: DocumentBuilder.java,v 1.1 2003-02-01 02:10:26 cbj Exp $
* Copyright (C) 2001 Andrew Selkirk
* Copyright (C) 2001 David Brownell
*
* This file is part of GNU JAXP, a library.
*
* GNU JAXP 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 of the License, or
* (at your option) any later version.
*
* GNU JAXP 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* As a special exception, if you link this library with other files to
* produce an executable, this library does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* This exception does not however invalidate any other reasons why the
* executable file might be covered by the GNU General Public License.
*/
package javax.xml.parsers;
// Imports
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.IOException;
// import java.net.*;
import org.w3c.dom.DOMImplementation;
import org.w3c.dom.Document;
import org.xml.sax.InputSource;
import org.xml.sax.EntityResolver;
import org.xml.sax.ErrorHandler;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
/**
* Uses an XML parser to construct a DOM document.
* @author Andrew Selkirk, David Brownell
* @version $Id: DocumentBuilder.java,v 1.1 2003-02-01 02:10:26 cbj Exp $
*/
public abstract class DocumentBuilder
{
/** Only subclasses may use the constructor. */
protected DocumentBuilder() { }
//-------------------------------------------------------------
// Methods ----------------------------------------------------
//-------------------------------------------------------------
public abstract DOMImplementation getDOMImplementation ();
public abstract boolean isNamespaceAware();
public abstract boolean isValidating();
public abstract Document newDocument();
// we don't demand jdk 1.2 File.toURL() in the runtime
// keep in sync with gnu.xml.util.Resolver
// and javax.xml.transform.stream.StreamSource
static String fileToURL (File f)
throws IOException
{
String temp;
// FIXME: getAbsolutePath() seems buggy; I'm seeing components
// like "/foo/../" which are clearly not "absolute"
// and should have been resolved with the filesystem.
// Substituting "/" would be wrong, "foo" may have been
// symlinked ... the URL code will make that change
// later, so that things can get _really_ broken!
temp = f.getAbsolutePath ();
if (File.separatorChar != '/')
temp = temp.replace (File.separatorChar, '/');
if (!temp.startsWith ("/"))
temp = "/" + temp;
if (!temp.endsWith ("/") && f.isDirectory ())
temp = temp + "/";
return "file:" + temp;
}
/**
* Constructs an InputSource from the file, and invokes parse ().
* The InputSource includes the URI for the file.
*/
public Document parse (File file)
throws SAXException, IOException
{
InputSource source;
source = new InputSource (fileToURL (file));
source.setByteStream (new FileInputStream(file));
return parse (source);
}
public abstract Document parse(InputSource source)
throws SAXException, IOException;
/**
* Avoid using this call; provide the system ID wherever possible.
* System IDs are essential when parsers resolve relative URIs,
* or provide diagnostics.
*/
public Document parse(InputStream stream)
throws SAXException, IOException {
return parse(new InputSource(stream));
} // parse()
public Document parse(InputStream stream, String systemID)
throws SAXException, IOException {
// Variables
InputSource source;
// Create Source
source = new InputSource(stream);
source.setSystemId(systemID);
// Parse Input Source
return parse(source);
} // parse()
public Document parse(String uri)
throws SAXException, IOException {
return parse(new InputSource(uri));
} // parse()
public abstract void setEntityResolver(EntityResolver resolver);
public abstract void setErrorHandler(ErrorHandler handler);
}
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