private static String serializeXmlDocument()

in log4j-changelog/src/main/java/org/apache/logging/log4j/changelog/util/XmlWriter.java [109:131]

• 20 lines of code
• 1 McCabe index (conditional complexity)

    private static String serializeXmlDocument(final Document document, final String rootElementName) throws Exception {

        final Transformer transformer = TransformerFactory.newInstance().newTransformer();
        final StreamResult result = new StreamResult(new StringWriter());
        final DOMSource source = new DOMSource(document);
        transformer.setOutputProperty(OutputKeys.ENCODING, CHARSET_NAME);
        transformer.setOutputProperty(OutputKeys.INDENT, "yes");
        transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");
        transformer.transform(source, result);

        // Life is too short to solve DOM transformer issues decently
        final String xml = result.getWriter().toString();
        final String padding = StringUtils.repeat(" ", rootElementName.length() + 2);
        return xml.replace("?><!--", "?>" + LS + "<!--")
                .replace("--><", "-->" + LS + "<")
                .replaceFirst(
                        '<' + rootElementName + " (.+>" + LS + ")",
                        ('<' + rootElementName + " xmlns=\"" + XmlUtils.XML_NAMESPACE + "\"" + LS + padding
                                + "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"" + LS + padding
                                + "xsi:schemaLocation=\"" + XmlUtils.XML_NAMESPACE + " " + XmlUtils.XML_SCHEMA_LOCATION
                                + "\"" + LS + padding
                                + "$1"));
    }