Class: Punchblock::Translator::Asterisk::Component::Input

Inherits:
Component show all
Defined in:
lib/punchblock/translator/asterisk/component/input.rb

Instance Attribute Summary collapse

Attributes inherited from Component

#call, #id, #internal

Instance Method Summary collapse

Methods inherited from Component

#call_id, #execute_command, #initialize, #logger_id, #send_complete_event, #send_event

Constructor Details

This class inherits a constructor from Punchblock::Translator::Asterisk::Component::Component

Instance Attribute Details

#buffer ⇒ Object (readonly)

Returns the value of attribute buffer.



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# File 'lib/punchblock/translator/asterisk/component/input.rb', line 7

def buffer
  @buffer
end

#grammar ⇒ Object (readonly)

Returns the value of attribute grammar.



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# File 'lib/punchblock/translator/asterisk/component/input.rb', line 7

def grammar
  @grammar
end

Instance Method Details

#execute ⇒ Object 



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# File 'lib/punchblock/translator/asterisk/component/input.rb', line 14

def execute
  @call.answer_if_not_answered
  initial_timeout = @component_node.initial_timeout || -1
  @inter_digit_timeout = @component_node.inter_digit_timeout || -1

  return with_error 'option error', 'A grammar document is required.' unless @component_node.grammar
  return with_error 'option error', 'A mode value other than DTMF is unsupported on Asterisk.' unless @component_node.mode == :dtmf
  return with_error 'option error', 'An initial timeout value that is negative (and not -1) is invalid.' unless initial_timeout >= -1
  return with_error 'option error', 'An inter-digit timeout value that is negative (and not -1) is invalid.' unless @inter_digit_timeout >= -1

  send_ref

  case @media_engine
  when :asterisk, nil
    @grammar = @component_node.grammar.value.clone
    grammar.inline!
    grammar.tokenize!
    grammar.normalize_whitespace

    begin_initial_timer initial_timeout/1000 unless initial_timeout == -1

    component = current_actor

    @active = true

    call.register_handler :ami, :name => 'DTMF' do |event|
      component.process_dtmf! event['Digit'] if event['End'] == 'Yes'
    end
  end
end

#process_dtmf(digit) ⇒ Object 



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# File 'lib/punchblock/translator/asterisk/component/input.rb', line 45

def process_dtmf(digit)
  return unless @active
  pb_logger.trace "Processing incoming DTMF digit #{digit}"
  buffer << digit
  cancel_initial_timer
  case (match = grammar.match buffer.dup)
  when RubySpeech::GRXML::Match
    pb_logger.trace "Found a match against buffer #{buffer}"
    complete success_reason(match)
  when RubySpeech::GRXML::NoMatch
    pb_logger.trace "Buffer #{buffer} does not match grammar"
    complete Punchblock::Component::Input::Complete::NoMatch.new
  when RubySpeech::GRXML::PotentialMatch
    pb_logger.trace "Buffer #{buffer} potentially matches grammar. Waiting..."
    reset_inter_digit_timer
  end
end

#setup ⇒ Object 



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# File 'lib/punchblock/translator/asterisk/component/input.rb', line 9

def setup
  @media_engine = call.translator.media_engine
  @buffer       = ""
end