Class: Fox::Runner

Inherits:
Object
  • Object
show all
Defined in:
lib/fox/runner.rb

Instance Method Summary collapse

Constructor Details

#initialize(argv, stdin = STDIN, stdout = STDOUT, stderr = STDERR, kernel = Kernel) ⇒ Runner

Returns a new instance of Runner.

Parameters:

  • argv (Array)
  • stdin (IO) (defaults to: STDIN)
  • stdout (IO) (defaults to: STDOUT)
  • stderr (IO) (defaults to: STDERR)
  • kernel (Kernel) (defaults to: Kernel) 


24
25
26
 
# File 'lib/fox/runner.rb', line 24

def initialize argv, stdin = STDIN, stdout = STDOUT, stderr = STDERR, kernel = Kernel
  @argv, @stdin, @stdout, @stderr, @kernel = argv, stdin, stdout, stderr, kernel
end

Instance Method Details

#execute! ⇒ Object 



30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
 
# File 'lib/fox/runner.rb', line 30

def execute!
  exit_code = begin
    # Thor accesses these streams directly rather than letting them be injected, so we replace them.
    $stderr = @stderr
    $stdin  = @stdin
    $stdout = @stdout

    # Fox::Cfg.load_configuration!
    Fox::Cli.start(@argv)

    # Thor::Base#start does not have a return value, assume success if no exception is raised.
    0
  rescue Exception => e
    # Proxy any exception that comes out of Thor itself back to stderr.
    $stderr.write(e.message + "\n")

    # Exit with a failure code.
    1
  ensure
    # ...then we put them back.
    $stderr = STDERR
    $stdin  = STDIN
    $stdout = STDOUT
  end

  # Proxy our exit code back to the injected kernel.
  @kernel.exit(exit_code)
end