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Open HTML to PDF is a CSS 2.1 renderer written in Java. This artifact contains the core rendering and layout code.
There is a newer version: 1.0.10
/*
 * {{{ header & license
 * Copyright (c) 2004, 2005 Who?
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1
 * of the License, or (at your option) any later version.
 *
 * This program 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser 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.
 * }}}
 */
package com.openhtmltopdf.resource;

import org.xml.sax.InputSource;

import com.openhtmltopdf.util.XRLog;

import java.io.BufferedInputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.io.UnsupportedEncodingException;

/**
 * @author Patrick Wright
 */
public abstract class AbstractResource implements Resource {
	private static enum StreamType { READER, STREAM, INPUT_SOURCE; }
	private final StreamType streamType;
	
	private InputSource inputSource;
	private InputStream inputStream;
	private Reader inputReader;
	
    private long createTimeStamp;
    private long elapsedLoadTime;

    private AbstractResource(StreamType streamType) {
        this.createTimeStamp = System.currentTimeMillis();
        this.streamType = streamType;
    }

    /**
     * Creates a new instance of AbstractResource
     */
    public AbstractResource(InputSource source) {
        this(StreamType.INPUT_SOURCE);
        this.inputSource = source;
    }
    
    public AbstractResource(Reader reader) {
    	this(StreamType.READER);
    	this.inputReader = reader;
    }
    
    public AbstractResource(InputStream is) {
    	this(StreamType.STREAM);
    	this.inputStream = is;
    }

    public InputSource getResourceInputSource() {
    	if (streamType == StreamType.STREAM &&
    		this.inputSource == null) {
    		this.inputSource = new InputSource(new BufferedInputStream(this.inputStream));
    	}
    	return this.inputSource;
    }

    public Reader getResourceReader() {
    	if (streamType == StreamType.STREAM &&
        	this.inputReader == null) {
        	try {
				this.inputReader = new InputStreamReader(this.inputStream, "UTF-8");
			} catch (UnsupportedEncodingException e) {
				XRLog.exception("Could not create reader for stream", e);
			}
        }
        return this.inputReader;
    }
    
    
    public InputStream getResourceInputStream() {
    	return this.inputStream;
    }
    
    public long getResourceLoadTimeStamp() {
        return this.createTimeStamp;
    }

    public long getElapsedLoadTime() {
        return elapsedLoadTime;
    }

    /*package*/
    void setElapsedLoadTime(long elapsedLoadTime) {
        this.elapsedLoadTime = elapsedLoadTime;
    }
}

/*
 * $Id$
 *
 * $Log$
 * Revision 1.4  2005/06/15 10:56:14  tobega
 * cleaned up a bit of URL mess, centralizing URI-resolution and loading to UserAgentCallback
 *
 * Revision 1.3  2005/06/01 21:36:40  tobega
 * Got image scaling working, and did some refactoring along the way
 *
 * Revision 1.2  2005/02/05 11:33:33  pdoubleya
 * Added load() to XMLResource, and accept overloaded input: InputSource, stream, URL.
 *
 * Revision 1.1  2005/02/03 20:39:35  pdoubleya
 * Added to CVS.
 *
 *
 */