Examples of org.apache.batik.util.ParsedURL

org.apache.batik.util.ParsedURL
This class is used as a replacement for java.net.URL. This is done for several reasons. First unlike java.net.URL this class will accept and parse as much of a URL as possible, without throwing a MalformedURL exception. This makes it extreamly useful for simply parsing a URL string (hence it's name). Second it allows for extension of the protocols supported by the URL parser. Batik uses this to support the 'Data' protocol. Third by default it checks the streams that it opens to see if they are GZIP compressed, if so it automatically uncompresses them (avoiding opening the stream twice in the processes). It is worth noting that most real work is defered to the ParsedURLData class to which most methods are forwarded. This is done because it allows a constructor interface to ParsedURL (mostly for compatability with core URL), in spite of the fact that the real implemenation uses the protocol handlers as factories for protocol specific instances of the ParsedURLData class. @author Thomas DeWeese @version $Id: ParsedURL.java,v 1.14 2002/08/01 20:24:32 deweese Exp $

                    burl = new URL(durl, href);
                } catch (Exception ex) {
                }
                CSSEngine e = doc.getCSSEngine();
                styleSheet = e.parseStyleSheet
                    (new InputSource(new ParsedURL(durl, href).toString()),
                     burl,
                     media);
                styleSheet.setAlternate("yes".equals(alternate));
                styleSheet.setTitle(title);
            }

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            /* Nothing to do */
        }


        if (node == null) {
            String baseURI = XMLBaseSupport.getCascadedXMLBase(e);
            ParsedURL purl;
            if (baseURI == null)
                purl = new ParsedURL(uriStr);
            else 
                purl = new ParsedURL(baseURI, uriStr);


            // try to load the image as a raster image (JPG or PNG)
            node = createRasterImageNode(ctx, e, purl);
        }

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        public void actionPerformed(ActionEvent e) {
            if (svgDocument == null) {
                return;
            }


            final ParsedURL u
                = new ParsedURL(((SVGOMDocument)svgDocument).getURLObject());


            final JFrame fr = new JFrame(u.toString());
            fr.setSize(resources.getInteger("ViewSource.width"),
                       resources.getInteger("ViewSource.height"));
            final JTextArea ta  = new JTextArea();
            ta.setLineWrap(true);
            ta.setFont(new Font("monospaced", Font.PLAIN, 12));


            JScrollPane scroll = new JScrollPane();
            scroll.getViewport().add(ta);
            scroll.setVerticalScrollBarPolicy
                (JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
            fr.getContentPane().add(scroll, BorderLayout.CENTER);


            new Thread() {
                public void run() {
                    char [] buffer = new char[4096];


                    try {
                        Document  doc = new PlainDocument();


                        InputStream is
                            = u.openStream(MimeTypeConstants.MIME_TYPES_SVG);


                        Reader in = XMLUtilities.createXMLDocumentReader(is);
                        int len;
                        while ((len=in.read(buffer, 0, buffer.length)) != -1) {
                            doc.insertString(doc.getLength(),

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                return "";
            }
            SVGDocument svgDoc = (SVGDocument)e.getOwnerDocument();
            String baseURI = ((SVGOMDocument)svgDoc).getURL();


            ParsedURL purl = new ParsedURL(baseURI, uriStr);
            if (!purl.complete()) 
                throw new BridgeException(e, ERR_URI_MALFORMED,
                                          new Object[] {uriStr});


            Iterator iter = refs.iterator();
            while (iter.hasNext()) {
                if (purl.equals(iter.next())) 
                    throw new BridgeException
                        (e, ERR_XLINK_HREF_CIRCULAR_DEPENDENCIES,
                         new Object[] {uriStr});
            }


            try {
                URIResolver resolver = new URIResolver(svgDoc, loader);
                e = resolver.getElement(purl.toString(), e);
                refs.add(purl);
            } catch(IOException ex) {
                throw new BridgeException(e, ERR_URI_IO,
                                          new Object[] {uriStr});
            }

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            Thread t = new Thread() {
                    public void run() {
                        try {
                            URL burl;
                            burl = ((SVGOMDocument)document).getURLObject();
                            final ParsedURL purl = new ParsedURL(burl, uri);
                            String e = EncodingUtilities.javaEncoding(enc);
                            e = (e == null) ? enc : e;
                            Reader r =
                                new InputStreamReader(purl.openStream(), e);
                            r = new BufferedReader(r);
                            final StringWriter sw = new StringWriter();
                            int read;
                            char[] buf = new char[4096];
                            while ((read = r.read(buf, 0, buf.length)) != -1) {
                                sw.write(buf, 0, read);
                            }


                            updateRunnableQueue.invokeLater(new Runnable() {
                                    public void run() {
                                        try {
                                            h.getURLDone(true,
                                                         purl.getContentType(),
                                                         sw.toString());
                                        } catch (Exception e){
                                            if (userAgent != null) {
                                                userAgent.displayError(e);
                                            }

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            if (uri.length() == 0) {
                return null; // no xlink:href found, exit
            }
            // check if there is circular dependencies
            SVGOMDocument doc = (SVGOMDocument)paintElement.getOwnerDocument();
            ParsedURL purl = new ParsedURL(doc.getURL(), uri);
            if (!purl.complete())
                throw new BridgeException(paintElement,
                                          ERR_URI_MALFORMED,
                                          new Object[] {uri});


            if (contains(refs, purl)) {

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        Attr xmlBase = localRefElement.getAttributeNodeNS
            (XML_NAMESPACE_URI, "xml:base");
        if (xmlBase != null) {
            // We have a current base so merge it with our new base and
            // set the result...
            ParsedURL purl = new ParsedURL(uri, xmlBase.getNodeValue());
            uri = purl.toString();
        }
        localRefElement.setAttributeNS(XML_NAMESPACE_URI,
                                       "xml:base",
                                       uri);

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            throw new BridgeException(e, ERR_ATTRIBUTE_MISSING,
                                      new Object[] {"xlink:href"});
        }


        String baseURI = XMLBaseSupport.getCascadedXMLBase(e);
        ParsedURL purl;
        if (baseURI == null) purl = new ParsedURL(uriStr);
        else                 purl = new ParsedURL(baseURI, uriStr);


        dims.add(d);
        uris.add(purl);
    }

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                    }


                    if (st != null) {
                        if (svgDocument != null) {
                            SVGOMDocument doc = (SVGOMDocument)svgDocument;
                            ParsedURL docPURL 
                                = new ParsedURL(svgDocument.getURL());
                            ParsedURL purl = new ParsedURL(docPURL, st);
                            String fi = svgCanvas.getFragmentIdentifier();
                            fi = (fi == null) ? "" : fi;
                            if (docPURL.equals(purl) && t.equals(fi)) {
                                return;
                            }

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     * Called when a link was activated.
     */
    public void linkActivated(LinkActivationEvent e) {
        String s = e.getReferencedURI();
        if (svgDocument != null) {
            ParsedURL docURL = new ParsedURL(svgDocument.getURL());
            ParsedURL url    = new ParsedURL(docURL, s);
            if (!url.sameFile(docURL)) {
                return;
            }


            if (s.indexOf("#") != -1) {
                localHistory.update(s);

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