Модуль:Число: различия между версиями

local p = {}
function string_starts_with(str, start)
   return string.sub(str, 1, string.len(start)) == start
end
local function is_set (var)
	return not (var == nil or var == '');
end
function p.plural(frame)
	local pframe = frame:getParent()
	local num = nil
	local singular = nil
	local plural2 = nil
	local plural5 = nil
	if is_set(pframe.args['3']) then
		num = tostring(pframe.args['1'])
		singular = pframe.args['2']
		plural2 = pframe.args['3']
		plural5 = pframe.args['4']
	else
		num = tostring(pframe.args['число'])
		singular = pframe.args['1']
		plural2 = pframe.args['2']
		plural5 = pframe.args['5']
	end
	local output = nil
	local negative = string_starts_with(num, '-')
	local mod10 = 0
	if #num > 0 then
		mod10 = tonumber(string.sub(num, #num, #num))
	end
	local mod100 = mod10
	if #num > 1 then
		mod100 = mod100 + tonumber(string.sub(num, #num - 1, #num - 1))
	end
	if (mod100 >= 10 and mod100 <= 19) or mod10 >= 5 or mod10 == 0 then
		output = plural5
	elseif mod10 == 1 then
		output = singular
	elseif mod10 >= 2 or mod10 <= 4 then
		output = plural2
	end
	return num .. ' ' .. output
end
return p