Class: EnglishNepaliDateConverter::DateConversion

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

Constant Summary collapse

EN_DAY = 
{ 1 => "Sunday", 2 => "Monday", 3 => "Tuesday", 4 => "Wednesday", 5 => "Thursday", 6 => "Friday", 7 => "Saturday" }
NP_DAY = 
{ 1 => "Aaitabar", 2 => "Sombar", 3 => "Mangalbar", 4 => "Budhabar", 5 => "Bihibar", 6 => "Sukrabar", 7 => "Sanibar" }
NP_MONTH = 
{ 1 => "Baisakh",	2 => "Jestha", 3 => "Asar", 4 => "Shrawan",	5 => "Bhadra", 6 => "Ashoj",
7 => "Kartik", 8 => "Mangsir",	9 => "Poush", 10 => "Magh", 11 => "Falgun", 12 => "Chaitra"	}
EN_MONTH = 
{ 1 => "January", 2 => "February", 3 => "March", 4 => "April", 5 => "May", 6 => "June",
7 => "July", 8 => "August", 9 => "September", 10 => "October", 11 => "November", 12 => "December" }

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#day_in_month ⇒ Object

Returns the value of attribute day_in_month.



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# File 'lib/english_nepali_date_converter/date_conversion.rb', line 4

def day_in_month
  @day_in_month
end

#day_of_week ⇒ Object

Returns the value of attribute day_of_week.



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# File 'lib/english_nepali_date_converter/date_conversion.rb', line 4

def day_of_week
  @day_of_week
end

#month ⇒ Object

Returns the value of attribute month.



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# File 'lib/english_nepali_date_converter/date_conversion.rb', line 4

def month
  @month
end

#month_number ⇒ Object

Returns the value of attribute month_number.



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# File 'lib/english_nepali_date_converter/date_conversion.rb', line 4

def month_number
  @month_number
end

#week_day ⇒ Object

Returns the value of attribute week_day.



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# File 'lib/english_nepali_date_converter/date_conversion.rb', line 4

def week_day
  @week_day
end

#year ⇒ Object

Returns the value of attribute year.



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# File 'lib/english_nepali_date_converter/date_conversion.rb', line 4

def year
  @year
end

Class Method Details

.get_day_of_week(day, type) ⇒ Object 



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# File 'lib/english_nepali_date_converter/date_conversion.rb', line 141

def self.get_day_of_week(day, type)
	type == "en" ? self::EN_DAY[day] : self::NP_DAY[day]
end

.get_month_name(month, type) ⇒ Object 



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# File 'lib/english_nepali_date_converter/date_conversion.rb', line 145

def self.get_month_name(month, type)
	type == "en" ? self::EN_MONTH[month] : self::NP_MONTH[month]
end

Instance Method Details

#eng_to_nep(*args) ⇒ Object 



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# File 'lib/english_nepali_date_converter/date_conversion.rb', line 15

def eng_to_nep(*args)

	# Normal days in month except leap year
	enDaysInMonth = [31,28,31,30,31,30,31,31,30,31,30,31]
	return "Enter appropriate month" unless (1..12).include?(args[1])

	if Date.leap?(args[2].to_i)
		return "Enter appropriate day of the month" unless (1.. + enDaysInMonth[args[1].to_i - 1] + 1).include?(args[0])
	else
		return "Enter appropriate day of the month" unless (1.. + enDaysInMonth[args[1].to_i - 1]).include?(args[0])
	end

	formated_date = args[0].to_s + "-" + args[1].to_s + "-" + args[2].to_s
	starting_date = DateTime.parse("01-01-1944").mjd.to_i
	ending_date = DateTime.parse("31-12-2033").mjd
	date_to_convert = DateTime.parse(formated_date).mjd
	return "Enter a valid date from 01-01-1944 to 31-12-2033" unless (starting_date..ending_date).include?(date_to_convert)

	enTotalDays = date_to_convert - starting_date

	# Conversion of 01-01-1944 AD will be 17.01.2000  BS. Take this BS as a base date
	@year = npStartYear = 2000
	@month_number = npStartMth = 9
	@day_in_month = npStartDay = 17

	startingIndexOfBSDate = 0
	@day_of_week = 7 # Saturday as Day 7 and Sunday as Day 1 of the week

	while enTotalDays !=0
		@day_in_month += 1
		@day_of_week += 1

		if @day_in_month > BsDate::BS_DATES[startingIndexOfBSDate][npStartMth]
			@month_number += 1
			@day_in_month = 1
			npStartMth += 1
		end

		@day_of_week = 1 if @day_of_week > 7

		if @month_number > 12
			@year += 1
			@month_number = 1
		end

		if npStartMth > 12
			npStartMth = 1
			startingIndexOfBSDate += 1
		end

		enTotalDays -= 1
	end

	@week_day = self.class.get_day_of_week(@day_of_week, 'np')
	@month = self.class.get_month_name(@month_number, 'np')
	return self
end

#nep_to_eng(*args) ⇒ Object 



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# File 'lib/english_nepali_date_converter/date_conversion.rb', line 73

def nep_to_eng(*args)

	return "Enter appropriate month" unless (1..12).include?(args[1])

	check_year = []
	for i in 0..90
		check_year << BsDate::BS_DATES[i][0]
	end

	return "Enter appropriate year" unless check_year.index(args[2])

	return "Enter appropriate day of the month" if BsDate::BS_DATES[check_year.index(args[2])][args[1]] < args[0]

	enStartYear = 1943;	enStartMonth = 4; enStartDay = 14 - 1

	npStartYear = 2000;	npStartMth = 1;	npStartDay = 1

	@day_of_week = 4 - 1
	# (2000..2089).include?(args[2]) && (01..12).include?(args[1]) && (01..32).include?(args[0])
	# 2000-01-01 to 2089-12-32
	enDaysInMonth = [0,31,28,31,30,31,30,31,31,30,31,30,31]
	leapEnDaysInMonth = [0,31,29,31,30,31,30,31,31,30,31,30,31]

	npYearDiff = args[2] - npStartYear - 1
	npTotalDays = 0

	for i in 0.. + npYearDiff
		 BsDate::BS_DATES[i].shift
		 npTotalDays += BsDate::BS_DATES[i].inject(:+)
	end

	npMonthDiff = args[1] -1

	for i in 1.. + npMonthDiff
		npTotalDays += BsDate::BS_DATES[args[2] - npStartYear][i]
	end

	npTotalDays += args[0]

	@day_in_month = enStartDay
	@month_number = enStartMonth;
	@year = enStartYear;

	while npTotalDays != 0

		total_month_days = Date.leap?(year) ? leapEnDaysInMonth[@month_number] : enDaysInMonth[@month_number]

		@day_in_month += 1
		@day_of_week += 1

		if @day_in_month > total_month_days
			@month_number += 1
			@day_in_month = 1

			if @month_number > 12
				@year += 1
				@month_number = 1
			end
		end

		@day_of_week = 1 if @day_of_week > 7
		npTotalDays -= 1
	end
	@week_day = self.class.get_day_of_week(@day_of_week, 'en')
	@month = self.class.get_month_name(@month_number, 'en')
	return self
end