Module: Clue::Streams

Included in:
Clue
Defined in:
lib/clue/streams.rb

Constant Summary collapse

STREAMS_SYMBOLS = 
{
  :stdin  => '<',
  :stdout => '>',
  :stderr => '2>'
}
RECOGNIZED_STREAMS = 
STREAMS_SYMBOLS.keys

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#stderr ⇒ Object (readonly)

Returns the value of attribute stderr.



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# File 'lib/clue/streams.rb', line 12

def stderr
  @stderr
end

#stdin ⇒ Object (readonly)

Returns the value of attribute stdin.



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# File 'lib/clue/streams.rb', line 12

def stdin
  @stdin
end

#stdout ⇒ Object (readonly)

Returns the value of attribute stdout.



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# File 'lib/clue/streams.rb', line 12

def stdout
  @stdout
end

Instance Method Details

#cli_streams ⇒ Object

Returns a string of streams suitable for cli use



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# File 'lib/clue/streams.rb', line 32

def cli_streams
  ary = STREAMS_SYMBOLS.each_with_object([]) do |(key, value), memo|
    ivar = instance_variable_get "@#{key}"
    delimiter = self.config[:stream_delimiter]
    memo << "#{value} #{delimiter}#{ivar}#{delimiter}" if ivar
  end

  ary.join self.config[:between_streams]
end

#init_streams(args = nil) ⇒ Object

Initialize streams ivars



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# File 'lib/clue/streams.rb', line 15

def init_streams(args = nil)
  set_streams(args.slice(*RECOGNIZED_STREAMS)) if args
end

#set_stream(stream, value) ⇒ Object

set a stream



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# File 'lib/clue/streams.rb', line 20

def set_stream(stream, value)
  instance_variable_set "@#{stream.to_s}", value
end

#set_streams(streams) ⇒ Object

Add many arguemnts



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# File 'lib/clue/streams.rb', line 25

def set_streams(streams)
  return unless streams && streams.kind_of?(Hash)

  streams.each { |stream, value| set_stream stream, value }
end