mindmap.rb

# This script converts an exported mind map from MindNode
# to JSON, for instance for using with D3.js (http://d3js.org).
#
# Example: `./mindmap.rb > structure.json`
$LOAD_PATH.unshift '.'
require 'json'

file = File.open('./mind-map.txt')

class String
  def to_node
    { "name" => self }
  end
end

map = {}

file.each_line do |line|
  level = line.count "\t"
  node = map

  level.times do
    node = node["children"].last
  end

  node["children"] ||= [] 
  node["children"] << line.strip.to_node
end

puts JSON.pretty_generate(map)