local p = {}
local bool_to_number={ [true]=1, [false]=0 }
local getArgs = require('Module:Arguments').getArgs
local err = ""
function p.NthDay( frame )
local args = getArgs(frame, { frameOnly = true })
local num = math.floor(tonumber(args[1]))
local wday = math.floor(tonumber(args[2]))
local mont = math.floor(tonumber(args[3]))
local yea = math.floor(tonumber(args[4]))
local format = args[5]
local bool_to_number={ [true]=1, [false]=0 }
local err = "---"
if num < -5 or num > 5 then
error("The number must be between -5 and 5")
elseif num == 0 then
error("The number must not be zero")
end
if wday < 0 or wday > 6 then
error("The day of the week must be between 0 and 6") end
if mont < 0 or mont > 12 then
error("The month must be between 1 and 12") end
if yea < 0 or yea > 9999 then
error("Wrong year number") end
if num > 0 and num < 6 then
local m_start = os.time{year=yea, month=mont, day=1, hour=0}
local m_wds = tonumber(os.date("%w", m_start))
local start_shift = (
(num - bool_to_number[wday >= m_wds]) * 7
- (m_wds - wday)
) * 24 * 60 * 60
local tim = m_start + start_shift
if tonumber(os.date("%m", tim)) == mont then
return (os.date(format, tim))
else
return (err)
end
elseif num < 0 and num > -6 then
local m_end = os.time{year = yea, month = mont + 1, day = 1, hour = 0} - 24 * 60 * 60
local m_wde = tonumber(os.date("%w", m_end))
local end_shift = ((math.abs(num + 1) + bool_to_number[wday > m_wde]) * 7
+ (m_wde - wday)) * 24 * 60 * 60
local tim = m_end - end_shift
if tonumber(os.date("%m", tim)) == mont then
return (os.date(format, tim))
else
return (err)
end
end
end
local purif = function (str)
if str == "" or str == nil then
return nil
elseif type(tonumber(str)) == "number" then
return math.floor(tonumber(str))
else
return nil
end
-- need .5 -- ,5 number format converter
error("You shouldn't read this")
end
local inbord = function (val, down, up)
if type(up) ~= "number" or type(down) ~= "number" or type(val) ~= "number" or up < down or val < down or val > up then
return false
else
return true
end
end
local inborders = function (val, down, up)
if up < down or type(up) ~= "number" or type(down) ~= "number" then
err = "Range " .. down .. "-" .. up .. " is not valid."
return error(err)
elseif type(val) ~= "number" then
err = "Value " .. val .. " is not valid"
return error(err)
elseif val < down or val > up then
err = "Value " .. val .. " not in the " .. down .. "-" .. up .. " range."
return error(err)
else
return val
end
end
function isdateret ( chain )
if type(chain) ~= "table" then
err = "Wrong type: " .. type(chain)
return error(err)
elseif (not chain.year) or (not chain.month) or (not chain.day) then
if #chain == 3 then error("Unnamed table arguments")
else error("Wrong format") end
elseif not inbord(chain.year,-9999,9999) then
err = chain.year .. " is wrong year"
error(err)
elseif not inbord(chain.month,1,12) then
err = chain.year .. " is wrong month"
error(err)
elseif not inbord(chain.day,1,31) then
err = chain.year .. " is wrong day"
error(err)
else return chain end
-- more detailed check for 31.02.0000 needed
end
function isdate ( chain )
if type(chain) == "table" and inbord(chain.year,-9999,9999) and inbord(chain.month,1,12) and inbord(chain.day,1,31) then
return true
else return false end
-- more detailed check for 31.02.0000 needed
-- check for other calendars needed
end
local numstr2date = function (datein)
local nums = {}
local dateout = {}
for num in string.gmatch(datein,"(%d+)") do
table.insert(nums,purif(num))
end
if #nums ~= 3 then error("Wrong format: 3 numbers expected")
elseif not inbord(nums[2],1,12) then error("Wrong month")
elseif not inbord(nums[3],1,31) then
dateout.year = nums[3]
dateout.month = nums[2]
dateout.day = nums[1]
elseif not inbord(nums[1],1,31) then
dateout.year = nums[1]
dateout.month = nums[2]
dateout.day = nums[3]
else
-- local lang = mw.getContentLanguage()
-- lang:formatDate(format,datein,true)
return error("Unable to recognize date format")
end
return isdateret(dateout)
end
function gri2jd( datein )
local year = datein.year
local month = datein.month
local day = datein.day
-- проверка параметров
if not (type(year) == 'number') then
return error("Wrong year")
end
if not (1 <= month and month <= 12) then
return error("Wrong month")
end
if not (1 <= day and day <= 31) then
return error("Wrong day")
end
-- расчёт юлианской даты
local a = math.floor((14 - month)/12)
local y = year + 4800 - a
local m = month + 12*a - 3
local offset = math.floor(y/4) - math.floor(y/100) + math.floor(y/400) - 32045
local jd = day + math.floor((153*m + 2)/5) + 365*y + offset
-- проверка попадания юлианской даты в границы между -9999 и 9999 годами Ю.К.
local low, high = -1931076.5, 5373557.49999
if not (low <= jd and jd <= high) then
return error("Wrong date")
end
-- расчёт даты по юлианскому календарю
local c = jd + 32082
local d = math.floor((4*c + 3)/1461)
local e = c - math.floor(1461*d/4)
local m = math.floor((5*e + 2)/153)
local year_out = d - 4800 + math.floor(m/10)
local month_out = m + 3 - 12*math.floor(m/10)
local day_out = e - math.floor((153*m + 2)/5) + 1
-- вывод даты в формате ГГГГ-ММ-ДД
local date = os.date("%Y-%m-%d", os.time{year=year_out, month=month_out, day=day_out})
return date
end
-- =p.test(mw.getCurrentFrame():newChild{title="обычно не важно",args={"1.1.2020"}})
function p.test(frame)
local args = getArgs(frame, { frameOnly = true })
local input = args[1]
if not input then
return ""
else
local datetest = numstr2date(input)
if isdate(datetest) then
strout = datetest.day .. "." .. datetest.month .. "." .. datetest.year .. " = " .. gri2jd(datetest)
return strout
else error("Not a date")
end
end
error("You shouldn't read this too")
end
return p
