Parse indented text tree in Java

Question

I have an indented file that I need to parsed using java, I need some way to place this in a Section class as shown below

    root
     root1
       text1
           


        

Answer 1

Surprisingly complex problem... but here's a pseudocode

intialize a stack
push first line to stack
while (there are more lines to read) {
 S1 = top of stack // do not pop off yet
 S2 = read a line
 if depth of S1 < depth of S2 {
  add S2 as child of S1
  push S2 into stack
 }
 else {
  while (depth of S1 >= depth of S2 AND there are at least 2 elements in stack) {
   pop stack
   S1 = top of stack // do not pop
  }
  add S2 as child of S1
  push S2 into stack
 }
}
return bottom element of stack

where depth is the # leading whitespaces. You might have to either modify or wrap the Section class to store the depth of the line.