sample

gistfile1.rb

def nep_to_eng(*args)
	date = args.map{|val| val.to_i}
	date_error = date_valid(date, "np")

	unless date_error.empty?
		return date_error.collect{ |error| "Enter appropriate #{error}"}
	else
		en_start_year = 1943; en_start_month = 4; en_start_day = 14 - 1
		np_start_year = 2000; np_start_month = 1; np_start_day = 1
		day_of_week = 4 - 1
		en_days_in_month = [0,31,28,31,30,31,30,31,31,30,31,30,31]
		leap_en_days_in_month = [0,31,29,31,30,31,30,31,31,30,31,30,31]
		np_year_diff = args[2] - np_start_year - 1;	np_total_days = 0

		(0..np_year_diff).each do |idx|
			BsDate::BS_DATES[idx].shift
			np_total_days += BsDate::BS_DATES[idx].inject(:+)
		end

		np_month_diff = args[1] - 1
		(1..np_month_diff).each{| idx| np_total_days += BsDate::BS_DATES[args[2] - np_start_year][idx] }

		np_total_days += args[0]
		day_in_month = en_start_day; month_number = en_start_month;	year = en_start_year

		while np_total_days != 0
			total_month_days = Date.leap?(year) ? leap_en_days_in_month[month_number] : en_days_in_month[month_number]
			day_in_month += 1; day_of_week += 1

			if day_in_month > total_month_days
				month_number += 1; day_in_month = 1
				(year += 1; month_number = 1) if month_number > 12
			end

			day_of_week = 1 if day_of_week > 7
			np_total_days -= 1
		end
	end
end