Thibault Jouan f7efd9c42f Refactor CLI usage into CLI.run!:
* Add Producer::Core::CLI::ArgumentError class;
* Raise ArgumentError in CLI.new when recipe is missing;
* Remove #check_arguments! and #print_usage_and_exit, move code into
  .run! method.
2014-01-07 21:06:14 +00:00

46 lines
916 B
Ruby

module Producer
module Core
class CLI
ArgumentError = Class.new(::ArgumentError)
USAGE = "Usage: #{File.basename $0} recipe_file"
class << self
def run!(arguments, output: $stderr)
begin
cli = new(arguments)
rescue ArgumentError
output.puts USAGE
exit 64
end
cli.run!
end
end
attr_reader :arguments, :stdout
def initialize(arguments, stdout: $stdout)
raise ArgumentError unless arguments.any?
@arguments = arguments
@stdout = stdout
end
def run!
interpreter.process recipe.tasks
end
def env
@env ||= Env.new
end
def recipe
@recipe ||= Recipe.evaluate_from_file(@arguments.first, env)
end
def interpreter
@interpreter ||= Interpreter.new
end
end
end
end