public static void transform()

in spring/src/main/java/org/apache/servicemix/kernel/spring/SpringTransformer.java [61:120]
54 lines of code
8 McCabe index (conditional complexity)

    public static void transform(URL url, OutputStream os) throws Exception {
        // Build dom document
        Document doc = parse(url);
        // Heuristicly retrieve name and version
        String name = url.getPath();
        int idx = name.lastIndexOf('/');
        if (idx >= 0) {
            name = name.substring(idx + 1);
        }
        String[] str = extractNameVersionType(name);
        // Create manifest
        Manifest m = new Manifest();
        m.getMainAttributes().putValue("Manifest-Version", "2");
        m.getMainAttributes().putValue(Constants.BUNDLE_MANIFESTVERSION, "2");
        m.getMainAttributes().putValue(Constants.BUNDLE_SYMBOLICNAME, str[0]);
        m.getMainAttributes().putValue(Constants.BUNDLE_VERSION, str[1]);
        m.getMainAttributes().putValue("Spring-Context", "*;publish-context:=false;create-asynchronously:=true");
        String importPkgs = getImportPackages(analyze(new DOMSource(doc)));
        if (importPkgs != null && importPkgs.length() > 0) {
            m.getMainAttributes().putValue(Constants.IMPORT_PACKAGE, importPkgs);
        }
        m.getMainAttributes().putValue(Constants.DYNAMICIMPORT_PACKAGE, "*");
        // Extract manifest entries from the DOM
        NodeList l = doc.getElementsByTagName("manifest");
        if (l != null) {
            for (int i = 0; i < l.getLength(); i++) {
                Element e = (Element) l.item(i);
                String text = e.getTextContent();
                Properties props = new Properties();
                props.load(new ByteArrayInputStream(text.trim().getBytes()));
                Enumeration en = props.propertyNames();
                while (en.hasMoreElements()) {
                    String k = (String) en.nextElement();
                    String v = props.getProperty(k);
                    m.getMainAttributes().putValue(k, v);
                }
                e.getParentNode().removeChild(e);
            }
        }

        JarOutputStream out = new JarOutputStream(os);
        ZipEntry e = new ZipEntry(JarFile.MANIFEST_NAME);
        out.putNextEntry(e);
        m.write(out);
        out.closeEntry();
        e = new ZipEntry("META-INF/");
        out.putNextEntry(e);
        e = new ZipEntry("META-INF/spring/");
        out.putNextEntry(e);
        out.closeEntry();
        e = new ZipEntry("META-INF/spring/" + name);
        out.putNextEntry(e);
        // Copy the new DOM
        if (tf == null) {
            tf = TransformerFactory.newInstance();
        }
        tf.newTransformer().transform(new DOMSource(doc), new StreamResult(out));
        out.closeEntry();
        out.close();
    }