Class: RBase::Columns::NumberColumn

Inherits:
Column
  • Object
show all
Defined in:
lib/rbase/columns.rb

Instance Attribute Summary

Attributes inherited from Column

#decimal, #name, #offset, #size

Instance Method Summary collapse

Methods inherited from Column

#attach_to, column_for, column_type, #type, type

Constructor Details

#initialize(name, options = {}) ⇒ NumberColumn

Returns a new instance of NumberColumn.



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# File 'lib/rbase/columns.rb', line 114

def initialize(name, options = {})
  size = options[:size] || 18
  size = 18 if size > 18
  
  super name, options.merge(:size => size)
end

Instance Method Details

#float? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rbase/columns.rb', line 146

def float?
  decimal && decimal != 0
end

#inspect ⇒ Object 



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# File 'lib/rbase/columns.rb', line 138

def inspect
  if float?
    "#{name}(decimal)"
  else
    "#{name}(integer)"
  end
end

#pack(value) ⇒ Object 



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# File 'lib/rbase/columns.rb', line 121

def pack(value)
  if value
    if float?
      [format("%#{size-decimal-1}.#{decimal}f", value)].pack("A#{size}")
    else
      [format("%#{size}d", value)].pack("A#{size}")
    end
  else
    " "*size
  end
end

#unpack(data) ⇒ Object 



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# File 'lib/rbase/columns.rb', line 133

def unpack(data)
  return nil if data.strip == ''
  data.rstrip.to_i
end