protected static void writeNode()

in batik-dom/src/main/java/org/apache/batik/dom/util/DOMUtilities.java [189:362]
171 lines of code
42 McCabe index (conditional complexity)

    protected static void writeNode(Node n, Writer w, NSMap m, boolean isXML11)
            throws IOException {
        switch (n.getNodeType()) {
        case Node.ELEMENT_NODE: {
            if (n.hasAttributes()) {
                NamedNodeMap attr = n.getAttributes();
                int len = attr.getLength();
                for (int i = 0; i < len; i++) {
                    Attr a = (Attr)attr.item(i);
                    String name = a.getNodeName();
                    if (name.startsWith("xmlns")) {
                        if (name.length() == 5) {
                            m = m.declare("", a.getNodeValue());
                        } else {
                            String prefix = name.substring(6);
                            m = m.declare(prefix, a.getNodeValue());
                        }
                    }
                }
            }

            w.write('<');
            String ns = n.getNamespaceURI();
            String tagName;
            if (ns == null) {
                tagName = n.getNodeName();
                w.write(tagName);
                if (!"".equals(m.getNamespace(""))) {
                    w.write(" xmlns=\"\"");
                    m = m.declare("", "");
                }
            } else {
                String prefix = n.getPrefix();
                if (prefix == null) {
                    prefix = "";
                }
                if (ns.equals(m.getNamespace(prefix))) {
                    tagName = n.getNodeName();
                    w.write(tagName);
                } else {
                    prefix = m.getPrefixForElement(ns);
                    if (prefix == null) {
                        prefix = m.getNewPrefix();
                        tagName = prefix + ':' + n.getLocalName();
                        w.write(tagName + " xmlns:" + prefix + "=\""
                                 + contentToString(ns, isXML11) + '"');
                        m = m.declare(prefix, ns);
                    } else {
                        if (prefix.equals("")) {
                            tagName = n.getLocalName();
                        } else {
                            tagName = prefix + ':' + n.getLocalName();
                        }
                        w.write(tagName);
                    }
                }
            }

            if (n.hasAttributes()) {
                NamedNodeMap attr = n.getAttributes();
                int len = attr.getLength();
                for (int i = 0; i < len; i++) {
                    Attr a = (Attr)attr.item(i);
                    String name = a.getNodeName();
                    String prefix = a.getPrefix();
                    String ans = a.getNamespaceURI();
                    if (ans != null &&
                            !("xmlns".equals(prefix) || name.equals("xmlns"))) {
                        if (prefix != null
                                && !ans.equals(m.getNamespace(prefix))
                                || prefix == null) {
                            prefix = m.getPrefixForAttr(ans);
                            if (prefix == null) {
                                prefix = m.getNewPrefix();
                                m = m.declare(prefix, ans);
                                w.write(" xmlns:" + prefix + "=\""
                                         + contentToString(ans, isXML11) + '"');
                            }
                            name = prefix + ':' + a.getLocalName();
                        }
                    }
                    w.write(' ' + name + "=\""
                             + contentToString(a.getNodeValue(), isXML11)
                             + '"');
                }
            }

            Node c = n.getFirstChild();
            if (c != null) {
                w.write('>');
                do {
                    writeNode(c, w, m, isXML11);
                    c = c.getNextSibling();
                } while (c != null);
                w.write("</" + tagName + '>');
            } else {
                w.write("/>");
            }
            break;
        }
        case Node.TEXT_NODE:
            w.write(contentToString(n.getNodeValue(), isXML11));
            break;
        case Node.CDATA_SECTION_NODE: {
            String data = n.getNodeValue();
            if (data.indexOf("]]>") != -1) {
                throw new IOException("Unserializable CDATA section node");
            }
            w.write("<![CDATA["
                     + assertValidCharacters(data, isXML11)
                     + "]]>");
            break;
        }
        case Node.ENTITY_REFERENCE_NODE:
            w.write('&' + n.getNodeName() + ';');
            break;
        case Node.PROCESSING_INSTRUCTION_NODE: {
            String target = n.getNodeName();
            String data = n.getNodeValue();
            if (target.equalsIgnoreCase("xml")
                    || target.indexOf(':') != -1
                    || data.indexOf("?>") != -1) {
                throw new
                    IOException("Unserializable processing instruction node");
            }
            w.write("<?" + target + ' ' + data + "?>");
            break;
        }
        case Node.COMMENT_NODE: {
            w.write("<!--");
            String data = n.getNodeValue();
            int len = data.length();
            if (len != 0 && data.charAt(len - 1) == '-'
                    || data.indexOf("--") != -1) {
                throw new IOException("Unserializable comment node");
            }
            w.write(data);
            w.write("-->");
            break;
        }
        case Node.DOCUMENT_TYPE_NODE: {
            DocumentType dt = (DocumentType)n;
            w.write("<!DOCTYPE "
                     + n.getOwnerDocument().getDocumentElement().getNodeName());
            String pubID = dt.getPublicId();
            if (pubID != null) {
                char q = getUsableQuote(pubID);
                if (q == 0) {
                    throw new IOException("Unserializable DOCTYPE node");
                }
                w.write(" PUBLIC " + q + pubID + q);
            }
            String sysID = dt.getSystemId();
            if (sysID != null) {
                char q = getUsableQuote(sysID);
                if (q == 0) {
                    throw new IOException("Unserializable DOCTYPE node");
                }
                if (pubID == null) {
                    w.write(" SYSTEM");
                }
                w.write(" " + q + sysID + q);
            }
            String subset = dt.getInternalSubset();
            if (subset != null) {
                w.write('[' + subset + ']');
            }
            w.write('>');
            break;
        }
        default:
            throw new IOException("Unknown DOM node type " + n.getNodeType());
        }
    }