file.rb

def calcCircleArea(radius)

	return (Math::PI * (radius * radius)).round(2)
	
end


def calcCirclePerimeter(radius)

	return (2*Math::PI*radius).round(2)
	
end


def calcRectangleArea(length, width)

	return (length * width)
	
end


def calcRectanglePerimeter(length, width)

	return ((length*2) + (width*2))
	
end


def calcSquareArea(side1, side2)

	return (side1 * side2)
	
end


def calcSquarePerimeter(side1, side2)

	return ((side1*2) + (side2 * 2))
	
end

def calcTriangleArea(height, base, hyp)

	return ((1/2)* base * height)

end

def calcTrianglePerimeter(height, base, hyp)

	return (height + base + hyp)

end


def calcTriangleHypotenuse(height, base)
	height2 = height**2
	base2 = base**2
	hyp = Math.sqrt(height2 + base2)
	return hyp
	
end


def create_writefile(file, shape_type, area, perimeter, data)

	File.open(file, 'a') do |file|
		file.write("%-15s %-10s %-10s %-10s\n" % [shape_type, area, perimeter, data])
    
  	end
end

unless ARGV.size == 2
	STDERR.puts "Error: Incorrect number of arguements\n\nOK. Goodbye."
  
else
	puts " "
	puts " "
	s = Time.now
	puts "Start Date/Time: " + s.inspect
	puts "Processing: #{ARGV[0]} (input), #{ARGV[1]} (output)"
	
	create_writefile(ARGV[1], "Shape Type", "Area", "Perimeter", "Data\n")
	
	in_file = File.new(ARGV[0], 'r')
	
	in_file.each_line do |line|
	
		if line.include?("S") || line.include?("s")
			shape_code = "S"
			shape_type = "Square"
			nums = line.scan(/\d+/).map(&:to_i)
			data = line
			data_points = nums.size
			data_desc = "Length"
			name = "Square"
			if data_points == 2
				side1 = nums[0]
				side2 = nums[1]
				area = calcSquareArea(side1, side2)
				perimeter = calcSquarePerimeter(side1, side2)
			elsif data_points == 1
				side1 = nums[0]
				side2 = nums[0]
				area = calcSquareArea(side1, side2)
				perimeter = calcSquarePerimeter(side1, side2)
			else
				side1 = nums[0]
			end
			
		elsif line.include?("R") || line.include?("r")
			shape_code = "R"
			shape_type = "Rectange"
			nums = line.scan(/\d+/).map(&:to_i)
			data = line
			data_points = nums.size
			data_desc = "Length"
			name = "Rectangle"
			if data_points == 2
				length = nums[0]
				width = nums[1]
				area = calcRectangleArea(length, width)
				perimeter = calcRectanglePerimeter(length, width)
			elsif data_points == 1
				side1 = nums[0]
				
			else
				side1 = nums[0]
			end
			
		elsif line.include?("C") || line.include?("c")
			shape_code = "C"
			shape_type = "Circle"
			nums = line.scan(/\d+/).map(&:to_i)
			data = line
			data_points = nums.size
			data_desc = "Radius"
			name = "Circle"
			if data_points == 1
				radius = nums[0]
				area = calcCircleArea(radius)
				perimeter = calcCirclePerimeter(radius)
			else
			end
			
		elsif line.include?("T") || line.include?("t")
			shape_code = "T"
			shape_type = "Triangle"
			nums = line.scan(/\d+/).map(&:to_i)
			data = line
			data_points = nums.size
			data_desc = "Height, Base"
			name = "Triangle"
			
			if data_points == 3
				base = nums[0]
				height = nums[1]
				hyp = nums[2]
				
			else data_points == 2
				height = nums[0]
				base = nums[1]
				hyp = calcTriangleHypotenuse(height, base)
				print hyp
				perimeter = calcTrianglePerimeter(height, base, hyp)
				area = calcTriangleArea(height, base, hyp)
			

		
			end
			
		end
		create_writefile(ARGV[1], shape_type, area, perimeter, data)
	end
	
	
	t = Time.now()
	f = t - s
	puts " "
	puts "Processing: Complete"
	puts "Stop Date/Time: " + t.inspect
	puts "Total Processing time: " + f.inspect + " seconds"
end