Module: AutomateEm::Utilities

Included in:
DatagramBase, Device::Base, Logic, ModuleCore
Defined in:
lib/automate-em/utilities.rb

Class Method Summary collapse

Class Method Details

.array_to_str(data) ⇒ Object

Converts an array into a raw byte string



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# File 'lib/automate-em/utilities.rb', line 151

def array_to_str(data)
  data.pack('c*')
end

.byte_to_hex(data) ⇒ Object

Converts a raw byte string into a hex encoded string



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# File 'lib/automate-em/utilities.rb', line 131

def byte_to_hex(data) # Assumes string - converts from a binary string

  output = ""
  data.each_byte { |c|
    s = c.to_s(16)
    s = "0#{s}" if s.length % 2 > 0
    output << s
  }
  return output
end

.hex_to_byte(data) ⇒ Object

Converts a hex encoded string into a raw byte string



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# File 'lib/automate-em/utilities.rb', line 120

def hex_to_byte(data) # Assumes string - converts to binary string

  data.gsub!(/(0x|[^0-9A-Fa-f])*/, "")       # Removes invalid characters

  output = ""
  data = "0#{data}" if data.length % 2 > 0
  data.scan(/.{2}/) { |byte| output << byte.hex} # Breaks string into an array of characters

  return output
end

.schedule ⇒ Object

Schedule events



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# File 'lib/automate-em/utilities.rb', line 172

def schedule
      return @schedule unless @schedule.nil?
      @status_lock.synchronize {
        @schedule ||= ScheduleProxy.new
      }
end

.str_to_array(data) ⇒ Object

Converts a string into a byte array



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# File 'lib/automate-em/utilities.rb', line 144

def str_to_array(data)
  data.bytes.to_a
end

.task(callback = nil, &block) ⇒ Object

Creates a new threaded task



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# File 'lib/automate-em/utilities.rb', line 158

def task(callback = nil, &block)
  EM.defer(nil, callback) do
    begin
      block.call
    rescue => e
      AutomateEm.print_error(System.logger, e, :message => "Error in task")
    end
  end
end