class Omnibus::CLI::Runner

This is the main entry point for the CLI. It exposes the method {#execute!} to start the CLI.

@note the arity of {#initialize} and {#execute!} are extremely important for testing purposes. It is a requirement to perform in-process testing with Aruba. In process testing is much faster than spawning a new Ruby process for each test.

Public Class Methods

new(argv, stdin = STDIN, stdout = STDOUT, stderr = STDERR, kernel = Kernel) click to toggle source
# File lib/omnibus/cli.rb, line 33
def initialize(argv, stdin = STDIN, stdout = STDOUT, stderr = STDERR, kernel = Kernel)
  @argv, @stdin, @stdout, @stderr, @kernel = argv, stdin, stdout, stderr, kernel
end

Public Instance Methods

execute!() click to toggle source
# File lib/omnibus/cli.rb, line 37
def execute!
  $stdin  = @stdin
  $stdout = @stdout
  $stderr = @stderr

  Omnibus::CLI.start(@argv)
  @kernel.exit(0)
rescue Omnibus::Error => e
  error = Omnibus.ui.set_color(e.message, :red)
  backtrace = Omnibus.ui.set_color("\n" + e.backtrace.join("\n  "), :red)
  Omnibus.ui.error(error)
  Omnibus.ui.error(backtrace)

  if e.respond_to?(:status_code)
    @kernel.exit(e.status_code)
  else
    @kernel.exit(1)
  end
end