Installation

Isntall it with RubyGems:

$ gem install brainfuckrb

Usage

#!/usr/bin/env ruby
# hello_brainfuck.rb

hello_brainfuck = <<-eos
  ++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>++.<<+++
  ++++++++++++.>.+++.------.--------.>+.>.
eos
bf = Brainfuckrb::Brainfuck.new(hello_brainfuck)
bf.run

$ ./hello_brainfuck.rb
Hello World!

Or run brainfuck programs directly:

$ cat hello.bf
+++++ +++++             initialize counter (cell #0) to 10
[                       in loop set the next four cells to 70/100/30/10
    > +++++ ++          add  7 to cell #1
    > +++++ +++++       add 10 to cell #2
    > +++               add  3 to cell #3
    > +                 add  1 to cell #4
    <<<< -              decrement counter (cell #0)
]
> ++ .                  print 'H'
> + .                   print 'e'
+++++ ++ .              print 'l'
.                       print 'l'
+++ .                   print 'o'
> ++ .                  print ' '
<< +++++ +++++ +++++ .  print 'W'
> .                     print 'o'
+++ .                   print 'r'
----- - .               print 'l'
----- --- .             print 'd'
> + .                   print '!'
> .                     print '\n'

$ brainfuckrb hello.bf
Hello World!

Only the brainfuck control characters ><+-.,[] are interpreted. Others will be ignored.

Known bugs

• Input does not work

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Added some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request