A thing that grabs a Trello board export in JSON and turns it into a rather badly formatted Markdown document.

process_trello.rb

#!/usr/bin/env ruby

require 'json_select'
require 'yajl'
require 'optparse'

options = {}
OptionParser.new do |opts|
	opts.banner = "Usage: #{$0} [options]"
	opts.separator ''
	opts.separator 'If an input file is not specified, stdin is used.'
	opts.separator ''
	
	opts.on('-i [filename]', "File containing JSON input") { |v| options[:input_filename] = v }
	
	opts.on_tail("-h", "--help", "Show this message") { puts opts }
	opts.on_tail("--version", "Show version") { puts '0.0.1' }
end.parse!

json = ""

if options[:input_filename]
	json = File.new(options[:input_filename], 'r')
else
	json = $<.read
end

parser = Yajl::Parser.new
hash = parser.parse(json)

lists = {}

list_ids = JSONSelect('array.lists').match(hash).each { |l| lists[l['id']] = l['name'] }

lists.keys.each do |lk|
	puts '# ' + lists[lk]
	cards = JSONSelect("array.cards").match(hash).reject { |c| c['idList'] != lk or c['name'] == '^' or c['closed'] }
	cards.each { |c| puts "\n## " + c['name'] + "\n\n" + c['desc'] }
	puts "\n\n"
end