private static Document extractBetween(
SectionsMarkdownVisitor v, Node parent, Header header1, Header header2) {
/*Node parent1 = header1 != null ? header1.jjtGetParent() : null;
Node parent2 = header2 != null ? header2.jjtGetParent() : null;
/*if (parent1 != null
&& parent2 != null
&& parent1 != parent2) {
throw new RuntimeException();
}* /
Node parent = parent1 != null ? parent1 : parent2;*/
Document doc = new Document(Parser.JJTDOCUMENT);
final int numChildren = parent.jjtGetNumChildren();
final int start = header1 != null ? Markdown.getIndexInParent(header1) + 1 : 0;
final int end = header2 != null ? Markdown.getIndexInParent(header2) - 1 : numChildren - 1;
for (int nodeIndex = start; nodeIndex <= end; nodeIndex++) {
Node child = parent.jjtGetChild(nodeIndex);
child.jjtSetParent(doc);
doc.jjtAddChild(child, nodeIndex - start);
}
// Add a copy of all the resource definitions
// to each document
for (ResourceDefinition rd : v.resourceDefinitions) {
ResourceDefinition copy = copy(rd);
copy.jjtSetParent(doc);
doc.jjtAddChild(copy, doc.jjtGetNumChildren());
}
return doc;
}
/**
* Nasty method for extracting doc sections from a markdown document.
*
* <ol>
* <li>The most prominent heading(s) are identified
* <li>The document is split into a list of sections corresponding to the tree following
* headings of that level. If the document didn't begin with a heading of that level, the
* first Section in the result list will have a null heading.
* </ol>
*
* @param document
* @return
*/
public static List<Section> extractSections(Document document) {
SectionsMarkdownVisitor v = new SectionsMarkdownVisitor();
document.accept(v);
List<Section> result = new ArrayList<>();
for (int levelIndex = 1; levelIndex <= 6; levelIndex++) {
List<Header> sections = v.sections.get(levelIndex);
if (sections != null) {
Node parent;
{
Header header = sections.get(0);
parent = header.jjtGetParent();
Document doc = extractBetween(v, parent, null, header);
result.add(new Section(null, doc));
}
for (int sectionIndex = 0; sectionIndex < sections.size(); sectionIndex++) {
Header header = sections.get(sectionIndex);
Header next = sectionIndex < sections.size() - 1 ? sections.get(sectionIndex + 1) : null;
Document doc = extractBetween(v, parent, header, next);
result.add(new Section(header, doc));
}
break;
}
}
return result;
}
/** Adjusts the heading levels in the document */
public static void adjustHeadings(Document document, final int increment) {
// adjust heading levels to h2 max
document.accept(
new AbstractMarkdownVisitor() {
@Override
public void visit(Header header) {
header.setLevel(header.getLevel() + increment);
}
});
}