Class: Spade::Shell

Inherits:
Object
  • Object
show all
Defined in:
lib/spade/shell.rb

Constant Summary collapse

METHODS = 
[:to_s, :exit, :quit, :help, :evalrb, :inspectjs]

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Shell

Returns a new instance of Shell.



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# File 'lib/spade/shell.rb', line 16

def initialize
  @history_path = File.expand_path("~/.spadehistory")
  load_history
end

Instance Method Details

#evalrb(str) ⇒ Object 



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# File 'lib/spade/shell.rb', line 53

def evalrb(str)
  Kernel.eval str, binding
end

#exit(status = 0) ⇒ Object Also known as: quit 



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# File 'lib/spade/shell.rb', line 31

def exit(status=0)
  save_history
ensure
  @ctx.reactor.exit(status)
end

#help(*args) ⇒ Object 



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# File 'lib/spade/shell.rb', line 39

def help(*args)
  <<-HELP
  print(msg)
  print msg to STDOUT

  exit(status = 0)
  exit the shell
  also: quit()

  evalrb(source)
  evaluate some ruby source
  HELP
end

#inject(ctx) ⇒ Object 



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# File 'lib/spade/shell.rb', line 21

def inject(ctx)
  @ctx = ctx
  METHODS.each{|meth| @ctx[meth.to_s] = method(meth) }
  true
end

#inspectjs(obj) ⇒ Object 



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# File 'lib/spade/shell.rb', line 57

def inspectjs(obj)
  # check for exact class match so we don't match things like arrays
  spacer = (obj.class == V8::Object) ? 2 : nil
  # the self[] uses the JS version of JSON
  json = @ctx['JSON'].stringify(obj, nil, spacer)
  # Some things can't be converted into json
  json || obj.inspect
end

#to_s ⇒ Object 



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# File 'lib/spade/shell.rb', line 27

def to_s
  "[object Shell]"
end