/**
* 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;
}
/** Constructs a Header */
static Header header(int level, String text) {
Header header = new Header(Parser.JJTHEADER);
header.setLevel(level);
Text t = new Text(Parser.JJTTEXT);
t.jjtSetValue(text);
header.jjtAddChild(t, 0);
return header;
}
@Override
public void visit(Header arg0) {
List<Header> headers = sections.get(arg0.getLevel());
if (headers == null) {
headers = new ArrayList<>();
sections.put(arg0.getLevel(), headers);
}
headers.add(arg0);
}