Bug 10787

I get the same error using a Reader with TranscoderInput

I get the same thing on 1.1 , different error on 1.5 with (testRotate.svg used 
as and example input) the class below called from a servlet that does this:


        response.setContentType("image/png");
        PrintWriter out = response.getWriter();
        
        ConvertSVG convertSVG = new ConvertSVG();
        
        FileReader in = new FileReader("E:\\batik-1.5
\\samples\\textRotate.svg");
        
        convertSVG.PNG(in,out);
        
        out.close();


------

**** The Transcoder class:

-----------------------------------------

import java.io.*;

import org.apache.batik.transcoder.image.PNGTranscoder;
import org.apache.batik.transcoder.TranscoderException;
import org.apache.batik.transcoder.TranscoderInput;
import org.apache.batik.transcoder.TranscoderOutput;

/**
 *
 * @author  martin@technomation.net
 */
public class ConvertSVG { 
    
    /** Creates a new instance of SVGtoPNG */
    public ConvertSVG() {
    }
    
    private static void toPNG( TranscoderInput input, TranscoderOutput output ) 
throws TranscoderException {
        PNGTranscoder t = new PNGTranscoder();
        t.transcode(input, output);
    }
        
    
    /**
     * @param inputStream
     * @param outputStream
     * @throws IOException  */   
    public static void PNG( Reader reader, Writer writer ) throws IOException {
        // Transcoder input
        TranscoderInput input = new TranscoderInput( reader );
        
        // create the transcoder output
        BufferedWriter ostream = new BufferedWriter( writer );
        TranscoderOutput output = new TranscoderOutput(ostream);
        
        // save the image
        try {
            toPNG(input, output);
        } catch ( TranscoderException e ) {
            System.err.println( "Transcoder exception thrown transcoding 
stream :" + e.toString() );
            throw new IOException( "Transcoder exception thrown transcoding 
stream :" + e.toString() );
        }
        
        // flush and close the stream then exit
        ostream.flush();
        ostream.close();
    }    
}

---------------------------------


**** The error on 1.1:


java.lang.NullPointerException
	at java.net.URL.(URL.java:366)
	at java.net.URL.(URL.java:329)
	at java.net.URL.(URL.java:321)
	at java.net.URL.(URL.java:252)
	at java.net.URL.(URL.java:275)
	at org.apache.batik.util.ParsedURLData.buildURL(Unknown Source)
	at org.apache.batik.util.ParsedURLData.openStreamInternal(Unknown 
Source)
	at org.apache.batik.util.ParsedURLData.openStream(Unknown Source)
	at org.apache.batik.util.ParsedURL.openStream(Unknown Source)
	at org.apache.batik.dom.svg.SAXSVGDocumentFactory.createDocument
(Unknown Source)
	at org.apache.batik.bridge.DocumentLoader.loadDocument(Unknown Source)
	at org.apache.batik.bridge.URIResolver.getNode(Unknown Source)
	at org.apache.batik.bridge.URIResolver.getElement(Unknown Source)
	at org.apache.batik.bridge.BridgeContext.getReferencedElement(Unknown 
Source)
	at org.apache.batik.bridge.SVGUseElementBridge.createGraphicsNode
(Unknown Source)
	at org.apache.batik.bridge.GVTBuilder.buildGraphicsNode(Unknown Source)
	at org.apache.batik.bridge.GVTBuilder.buildComposite(Unknown Source)
	at org.apache.batik.bridge.GVTBuilder.build(Unknown Source)
	at org.apache.batik.transcoder.image.ImageTranscoder.transcode(Unknown 
Source)
	at org.apache.batik.transcoder.XMLAbstractTranscoder.transcode(Unknown 
Source)
	at com.dnaShare.charts.ConvertSVG.toPNG(ConvertSVG.java:28)
	at com.dnaShare.charts.ConvertSVG.PNG(ConvertSVG.java:100)



---------------------------


*****    The error on 1.5rc4:

java.lang.NullPointerException
	at org.apache.batik.css.engine.CSSEngine.parseStyleSheet(Unknown Source)
	at org.apache.batik.css.engine.CSSEngine.parseStyleSheet(Unknown Source)
	at 
org.apache.batik.dom.svg.SVGStyleSheetProcessingInstruction.getCSSStyleSheet
(Unknown Source)
	at org.apache.batik.css.engine.CSSEngine.getStyleSheetNodes(Unknown 
Source)
	at org.apache.batik.css.engine.CSSEngine.getCascadedStyleMap(Unknown 
Source)
	at org.apache.batik.css.engine.CSSEngine.getComputedStyle(Unknown 
Source)
	at org.apache.batik.bridge.CSSUtilities.getComputedStyle(Unknown Source)
	at org.apache.batik.bridge.CSSUtilities.convertVisibility(Unknown 
Source)
	at org.apache.batik.bridge.SVGSVGElementBridge.createGraphicsNode
(Unknown Source)
	at org.apache.batik.bridge.GVTBuilder.build(Unknown Source)
	at org.apache.batik.transcoder.SVGAbstractTranscoder.transcode(Unknown 
Source)
	at org.apache.batik.transcoder.image.ImageTranscoder.transcode(Unknown 
Source)
	at org.apache.batik.transcoder.XMLAbstractTranscoder.transcode(Unknown 
Source)
	at com.dnaShare.charts.ConvertSVG.toPNG(ConvertSVG.java:28)
	at com.dnaShare.charts.ConvertSVG.PNG(ConvertSVG.java:100)

  The problem is with documents that have relative reference there is no
way to resolve the reference when you just provide a stream.