Class: FormatR::NumberFormatter

Inherits:
Formatter show all
Defined in:
lib/formatr.rb

Overview

this format doesn’t care if it’s a @ or an ^, it acts the same and doesn’t chop things used for @##.## formats

Instance Method Summary collapse

Methods inherited from Formatter

#changeVarValue, #setVarValue

Constructor Details

#initialize(wholeString, radix, fractionString) ⇒ NumberFormatter

Returns a new instance of NumberFormatter.



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# File 'lib/formatr.rb', line 538

def initialize (wholeString, radix, fractionString)
  @whole = wholeString.size + 1 # for the '@'
  @fraction = fractionString.size
  @radix = radix.size #should always be 1
  @len = @whole + @fraction + @radix
end

Instance Method Details

#formatInt(s) ⇒ Object 



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# File 'lib/formatr.rb', line 571

def formatInt (s)
  s.to_s.ljust(@len)
end

#formatString(s, unused_var_name = nil, unused_aBinding = nil) ⇒ Object

given a string that’s a number spit it back with the right number of digits and rounded the correct amount.



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# File 'lib/formatr.rb', line 547

def formatString (s, unused_var_name=nil, unused_aBinding=nil)
  if (s.size == 1)
    return formatInt(s)
  end
  num = s.split('.') # should this take into account internationalization?
  res = num[0]
  res = "" if (res.nil?) ## pgr xxx
  spaceLeft = @fraction + @radix
  if (res.size > @whole)
    spaceLeft = @len - res.size()
  end
  if (spaceLeft > 0)
    res += '.'  
    spaceLeft -= 1
  end
  res += getFract(num, spaceLeft) if (spaceLeft > 0)

  max = @len
  if (res.size > max)
    res = res[0,max]
  end
  res.rjust(max)
end

#getFract(num, spaceLeft) ⇒ Object

what portion of the number is after the decimal point and should be printed



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# File 'lib/formatr.rb', line 576

def getFract (num, spaceLeft)
  num[1] = "" if (num[1].nil?)
  @fraction.times {num[1] += '0'}
  fract = num[1][0,spaceLeft + 1]
  if (fract.size() >= spaceLeft + 1)
    if ((fract[spaceLeft,1].to_i) >= 5 )
      fract[spaceLeft - 1, 1] = ((fract[spaceLeft - 1, 1].to_i) + 1).to_s
    end
  end
  return fract[0,spaceLeft] 
end