Class: FixedWidthDSL::FormatString

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

Defined Under Namespace

Classes: Field

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ FormatString

Returns a new instance of FormatString.



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# File 'lib/fixed_width_dsl.rb', line 7

def initialize
  @fields = []
  @format_string = ''
end

Instance Attribute Details

#format_string ⇒ Object (readonly)

Returns the value of attribute format_string.



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# File 'lib/fixed_width_dsl.rb', line 5

def format_string
  @format_string
end

Instance Method Details

#apply(attributes) ⇒ Object 



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# File 'lib/fixed_width_dsl.rb', line 30

def apply attributes
  values = @fields.map do |field|
    attributes.fetch(field.name)
  end
  format(format_string, *values)
end

#debug ⇒ Object 



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# File 'lib/fixed_width_dsl.rb', line 12

def debug
  output = "field                | wi | fro |  to | type    | flags\n"
  lines = [] 
  current_column = 1
  @fields.each do |field|
    end_column = current_column + field.width - 1
    output.concat format "%-20s | %2i | %3i | %3i | %-7s | %3s\n",
      field.name,
      field.width,
      current_column,
      end_column,
      field.type,
      field.flags
    current_column += field.width
  end
  output
end