2014-01-07 18:47:56 +00:00

44 lines
804 B
Ruby

module Producer
module Core
class CLI
USAGE = "Usage: #{File.basename $0} recipe_file"
attr_reader :arguments, :stdout
def initialize(arguments, stdout: $stdout)
@arguments = arguments
@stdout = stdout
end
def run!
check_arguments!
interpreter.process recipe.tasks
end
def check_arguments!
print_usage_and_exit(64) unless @arguments.length == 1
end
def env
@env ||= Env.new
end
def recipe
@recipe ||= Recipe.evaluate_from_file(@arguments.first, env)
end
def interpreter
@interpreter ||= Interpreter.new
end
private
def print_usage_and_exit(status)
@stdout.puts USAGE
exit status
end
end
end
end