Wicked Strategery

I found this bit of code amongst my collection of code-snippets. It's a fairly simple program that reads a tree from a file and "pretty-prints" it to stdout.

For example, given this input file:

              |blue
              |green
              green|yellow
              yellow|red
          

Would result in this tree:

              blue
              green
                  yellow
                      red
          

It's implemented via an N-ary tree, without the restriction that each node must have N children. The only restriction is that the value of a node must be unique.

I've used variants of this in a number of places, handy for ensuring a tree as stored in memory matches what I think it should.

Feel free to download it and reuse it.