private void printAttributes(StringBuilder buf, Node node) {
	if (node instanceof Text)
		printAttribute(buf, "literal", ((Text)node).getLiteral());
	else if (node instanceof Code)
		printAttribute(buf, "literal", ((Code)node).getLiteral());
	else if (node instanceof IndentedCodeBlock)
		printAttribute(buf, "literal", ((IndentedCodeBlock)node).getLiteral());
	else if (node instanceof FencedCodeBlock)
		printAttribute(buf, "literal", ((FencedCodeBlock)node).getLiteral());
	else if (node instanceof HtmlBlock)
		printAttribute(buf, "literal", ((HtmlBlock)node).getLiteral());
	else if (node instanceof HtmlInline)
		printAttribute(buf, "literal", ((HtmlInline)node).getLiteral());
	else if (node instanceof Link) {
		printAttribute(buf, "destination", ((Link)node).getDestination());
		printAttribute(buf, "title", ((Link)node).getTitle());
	} else if (node instanceof Image) {
		printAttribute(buf, "destination", ((Image)node).getDestination());
		printAttribute(buf, "title", ((Image)node).getTitle());
	} else if (node instanceof Heading)
		printAttribute(buf, "level", ((Heading)node).getLevel());
}
 

private void addMenu(Node document, List<MenuItem> menuItems) {
    final List<MenuItem> reversedItems = new LinkedList<>(menuItems);
    Collections.reverse(reversedItems);
    for (final MenuItem menuItem : reversedItems) {
        if (menuItem.level > 5) {
            continue;
        }
        final Link link = new Link();
        link.setTitle(menuItem.title);
        final Text text = new Text();
        text.setLiteral( menuItem.title);
        link.appendChild(text);
        link.setDestination("#" + menuItem.anchorId);
        final HtmlInline indent = new HtmlInline();
        final String cssClass = "menuItem" + menuItem.level;
        indent.setLiteral("<a href=\"#" + menuItem.anchorId + "\" class=\"" + cssClass + "\">" + menuItem.title + "</a>");
        document.prependChild(indent);
        document.prependChild(new HardLineBreak());
    }
}
 

@Override
protected Node parse() {
    String m = match(HTML_TAG);
    if (m != null) {
        HtmlInline node = new HtmlInline();
        node.setLiteral(m);
        return node;
    } else {
        return null;
    }
}
 

private List<MenuItem> addAnchorAndNumberingToHeaders(Node node) {
    final List<MenuItem> menuItems = new LinkedList<>();
    final int[] counters = new int[10];
    node.accept(new AbstractVisitor() {

        @Override
        public void visit(Heading heading) {
            final Text text = (Text) heading.getFirstChild();
            final String content = text.getLiteral();
            final boolean intro = "Introduction".equals(content);  // Do not number Introduction
            if (!intro) {
                counters[heading.getLevel()]++;
                for (int i = heading.getLevel() + 1; i < 6; i++) {
                    counters[i] = 0;
                }
            }
            final StringBuilder sb = new StringBuilder();
            for (int i = 1; i <= heading.getLevel(); i++) {
                sb.append(counters[i]).append(".");
            }
            if (sb.length() > 1 && heading.getLevel() > 1) {
                sb.delete(sb.length() - 1, sb.length() );
            }
            final String anchorId = content.replace(" ", "");
            final HtmlInline htmlInline = new HtmlInline();
            htmlInline.setLiteral("<a name=\"" + anchorId + "\"></a>");
            heading.insertBefore(htmlInline);
            final MenuItem menuItem = new MenuItem(content, anchorId, heading.getLevel());
            menuItems.add(menuItem);
        }
    });
    return menuItems;
}
 

@Override
public void visit(HtmlInline htmlInline) {
    visit((Node) htmlInline);
}