private TOCNode preprocessDOM_buildTOC_inner()

in freemarker-docgen-core/src/main/java/org/freemarker/docgen/core/Transform.java [1975:2060]

• 77 lines of code
• 22 McCabe index (conditional complexity)

    private TOCNode preprocessDOM_buildTOC_inner(Node node,
            final int sectionLevel, TOCNode parentTOCNode) {
        TOCNode curTOCNode = null;
        int newSectionLevel = sectionLevel;

        if (node instanceof Element) {
            final Element elem = (Element) node;
            final String nodeName = node.getNodeName();

            if (DOCUMENT_STRUCTURE_ELEMENTS.contains(nodeName)) {
                DocumentStructureRank rank = DocumentStructureRank.valueOf(
                        XMLUtil.getAttribute(elem, A_DOCGEN_RANK)
                                .toUpperCase());
                final boolean isTheDocumentElement
                        = elem.getParentNode() instanceof Document;
                if (isTheDocumentElement
                        || rank.compareTo(lowestPageTOCElemenRank) >= 0) {
                    curTOCNode = new TOCNode(elem, tocNodes.size());
                    tocNodes.add(curTOCNode);

                    if ((isTheDocumentElement
                            || rank.compareTo(lowestFileElemenRank) >= 0)
                            && !hasPrefaceLikeParent(elem)) {
                        elem.setAttribute(A_DOCGEN_FILE_ELEMENT, "true");
                        curTOCNode.setFileElement(true);

                        if (isTheDocumentElement) {
                            curTOCNode.setOutputFileName(FILE_TOC_HTML);
                            elem.setAttribute(A_DOCGEN_ROOT_ELEMENT, "true");
                        } else if (getExternalLinkTOCNodeURLOrNull(elem) != null) {
                            curTOCNode.setOutputFileName(null);
                        } else if (AV_INDEX_ROLE.equals(elem.getAttribute(DocBook5Constants.A_ROLE))) {
                            curTOCNode.setOutputFileName(FILE_INDEX_HTML);
                        } else {
                            String id = XMLUtil.getAttribute(elem, "id");
                            if (id == null) {
                                throw new BugException("Missing id attribute");
                            }
                            String fileName = id + ".html";
                            if (fileName.equals(FILE_TOC_HTML) || fileName.equals(FILE_DETAILED_TOC_HTML)
                                    || fileName.equals(FILE_INDEX_HTML) || fileName.equals(FILE_SEARCH_RESULTS_HTML)) {
                                throw new DocgenException(
                                        XMLUtil.theSomethingElement(elem, true)
                                        + " has an xml:id that is deduced to "
                                        + "a reserved output file name, \""
                                        + fileName + "\". (Hint: Change the "
                                        + "xml:id.)");
                            }
                            curTOCNode.setOutputFileName(fileName);
                        }
                    } else { // of: if file element
                        elem.setAttribute(A_DOCGEN_PAGE_TOC_ELEMENT, "true");
                    }
                    elem.setAttribute(A_DOCGEN_DETAILED_TOC_ELEMENT, "true");
                } // if ToC element
            }  // if document structure element
        }  // if Element

        if (curTOCNode != null) {
            parentTOCNode = curTOCNode;
        }

        NodeList children = node.getChildNodes();
        for (int i = 0; i < children.getLength(); i++) {
            TOCNode child = preprocessDOM_buildTOC_inner(
                    children.item(i),
                    newSectionLevel,
                    parentTOCNode);

            if (child != null && parentTOCNode != null) {
                child.setParent(parentTOCNode);
                TOCNode lastChild = parentTOCNode.getLastChild();
                if (lastChild != null) {
                    child.setPrevious(lastChild);
                    lastChild.setNext(child);
                }

                if (parentTOCNode.getFirstChild() == null) {
                    parentTOCNode.setFirstChild(child);
                }
                parentTOCNode.setLastChild(child);
            }
        }

        return curTOCNode;
    }