#!/usr/bin/env ruby

require 'Newick'


if (ARGV.size != 2)
  STDERR.printf("usage: %s tree-file tree-file\n", $0)
  exit(1)
end

tree1File, tree2File = ARGV

tree1 = NewickTree.fromFile(tree1File)
tree2 = NewickTree.fromFile(tree2File)

begin
  diff1, diff2 = tree1.compare(tree2)
  if (diff1.empty? && diff2.empty?)
     printf("The trees are identical\n")
  else
    printf("Clades in #{tree1File} but not #{tree2File}:\n")
    diff1.each {|clade|
      p clade
    }
    printf("Clades in #{tree2File} but not #{tree1File}:\n")
    diff2.each {|clade|
      p clade
    }
  end
rescue
  STDERR.printf("The two trees have different taxa and are not comparable\n")
  exit(1)
end