public Map getNamespaceDeclarations()

in nbxml/src/main/java/org/apache/vysper/xml/fragment/ResolverNamespaceResolver.java [46:87]
30 lines of code
12 McCabe index (conditional complexity)

    public Map<String, String> getNamespaceDeclarations() {
        Map<String, String> ns = new LinkedHashMap<String, String>();
        if (!elements.isEmpty()) {
            XMLElement topElm = elements.peek();
            for (Entry<String, String> entry : topElm.getDeclaredNamespaces().entrySet()) {
                ns.put(entry.getKey(), entry.getValue());
            }

            // look for any generated prefixes for attributes
            for (Attribute attribute : topElm.getAttributes()) {
                String attrNs = attribute.getNamespaceUri();
                if (attrNs.length() > 0 && resolvePrefix(attrNs, false) == null) {
                    // attribute is in a namespace, and that namespace is not declared
                    ns.put(resolvePrefix(attrNs), attrNs);
                }
            }

            // add the element declaration as well, if not already defined
            if (topElm.getNamespaceURI().length() > 0) {
                // declared in a namespace
                if (!ns.containsValue(topElm.getNamespaceURI())) {
                    // the namespace is not declared as an attribute on topElm
                    // is it declared on a parent?
                    // pop the element to test for declaration on the parent
                    pop();
                    if (resolvePrefix(topElm.getNamespaceURI(), false) == null) {
                        ns.put(topElm.getNamespacePrefix(), topElm.getNamespaceURI());
                    }
                    // restore stack
                    push(topElm);
                }
            } else {
                // is there a parent in a namespace? if so, we need to reset the default namespace
                if (elements.size() > 1 && elements.get(elements.size() - 2).getNamespaceURI().length() > 0
                        && !ns.containsKey("")) {
                    ns.put("", "");
                }
            }
        }

        return ns;
    }