1begin
 2  require 'open3_detach'
 3rescue LoadError
 4  require 'open3'
 5end
 6
 7module GitHub
 8  module Markup
 9    extend self
10    @@markups = {}
11
12    def render(filename, content)
13      renderer(filename)[content] || content
14    end
15
16    def markup(file, pattern, &block)
17      require file.to_s
18      add_markup(pattern, &block)
19    rescue LoadError
20      nil
21    end
22
23    def command(command, regexp)
24      command = command.to_s
25      if !File.exists?(command) && !command.include?('/')
26        command = File.dirname(__FILE__) + '/commands/' + command.to_s
27      end
28
29      add_markup(regexp) do |content|
30        execute(command, content)
31      end
32    end
33
34    def add_markup(regexp, &block)
35      @@markups[regexp] = block
36    end
37
38    def renderer(filename)
39      @@markups.each do |key, value|
40        if Regexp.compile("#{key}$") =~ filename
41          return value
42        end
43      end
44    end
45
46    def execute(command, target)
47      out = ''
48      Open3.popen3(command) do |stdin, stdout, _|
49        stdin.puts target
50        stdin.close
51        while tmp = stdout.read(1024)
52          out << tmp
53        end
54      end
55      out
56    end
57
58    # Define markups
59    instance_eval File.read(File.dirname(__FILE__) + '/markups.rb')
60  end
61end