public MDSection ParentForLevel(int level)
{
if (Parent == null || level > Level)
{
return(null);
}
return(Parent.Level < level? Parent : Parent.ParentForLevel(level));
}
public MDSection Parse()
{
Root = new MDSection("", 0);
while (!file.EndOfStream)
{
var line = file.ReadLine();
//check for section
var match = section.Match(line);
if (match.Success)
{
var level = match.Groups[1].Value.Length;
var title = ConvertEmphasis(match.Groups[2].Value);
if (sec == null)
{
sec = Root.AddSubsection(title, level); //first section
}
else if (level > sec.Level)
{
sec.Flush(); sec = sec.AddSubsection(title, level);
} //child
else
{
sec.Flush(); sec = sec.ParentForLevel(level).AddSubsection(title, level);
} //sibling or cousin
}
else
{
sec.AddLine(line);
}
}
if (sec != null)
{
sec.Flush();
}
//if the document has a single top section, chroot to it
if (Root.NoText && Root.Subsections.Count == 1)
{
Root = Root.Subsections[0];
Root.Parent = null;
}
return(Root);
}