Module:DateI18n
Documentation for this module may be created at Module:DateI18n/doc
--[[
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|_| |_|\___/ \__,_|\__,_|_|\___(_)____/ \__,_|\__\___|___|_|\___/|_| |_|
This module is intended for processing of date strings.
Please do not modify this code without applying the changes first at Module:Date/sandbox and testing
at Module:Date/sandbox/testcases and Module talk:Date/sandbox/testcases.
Authors and maintainers:
* User:Parent5446 - original version of the function mimicking template:ISOdate
* User:Jarekt - original version of the functions mimicking template:Date
]]
-- =======================================
-- === Dependencies ======================
-- =======================================
require('strict')
-- =======================================
-- === Local Functions ===================
-- =======================================
------------------------------------------------------------------------------
--[[ (copied from Module:Core)
Function allowing for consistent treatment of boolean-like wikitext input.
Inputs:
1) val - value to be evaluated, outputs as a function of values:
true : true (boolean), 1 (number), or strings: "yes", "y", "true", "1"
false : false (boolean), 0 (number), or strings: "no", "n", "false", "0"
2) default - value to return otherwise
See Also: It works similarly to Module:Yesno
]]
local function yesno(val, default)
if type(val) == 'boolean' then
return val
elseif type(val) == 'number' then
val = tostring(val)
end
if type(val) == 'string' then
local LUT = {
yes=true , y=true , ['true'] =true , t=true , ['1']=true , on =true,
no =false, n=false, ['false']=false, f=false, ['0']=false, off=false }
val = LUT[mw.ustring.lower(val)] -- put in lower case
if (val~=nil) then
return val
end
end
return default
end
---------------------------------------------------------------------------------------
-- trim leading zeros in years prior to year 1000
-- INPUT:
-- * datestr - translated date string
-- * lang - language of translation
-- OUTPUT:
-- * datestr - updated date string
local function trimYear(datestr, year, lang)
local yearStr0, yearStr1, yearStr2, zeroStr
yearStr0 = string.format('%04i', year ) -- 4 digit year in standard form "0123"
yearStr1 = mw.language.new(lang):formatDate( 'Y', yearStr0) -- same as calling {{#time}} parser function
--yearStr1 = mw.getCurrentFrame():callParserFunction( "#time", { 'Y', yearStr0, lang } ) -- translate to a language
if yearStr0==yearStr1 then -- most of languages use standard form of year
yearStr2 = tostring(year)
else -- some languages use different characters for numbers
yearStr2 = yearStr1
zeroStr = mw.ustring.sub(yearStr1,1,1) -- get "0" in whatever language
for i=1,3 do -- trim leading zeros
if mw.ustring.sub(yearStr2,1,1)==zeroStr then
yearStr2 = mw.ustring.sub(yearStr2, 2, 5-i)
else
break
end
end
end
return string.gsub(datestr, yearStr1, yearStr2 ) -- in datestr replace long year with trimmed one
end
---------------------------------------------------------------------------------------
-- Look up proper format string to be passed to {{#time}} parser function
-- INPUTS:
-- * datecode: YMDhms, YMDhm, YMD, YM, Y, MDhms, MDhm, MD, or M
-- * day : Number between 1 and 31 (not needed for most languages)
-- * lang : language
-- OUTPUT:
-- * dFormat : input to {{#time}} function
local function getDateFormat(datecode, day, lang)
local function parseFormat(dFormat, day)
if dFormat:find('default') and #dFormat>10 then
-- Special (and messy) case of dFormat code depending on a day number, where data is a
-- JSON-encoded table {”default”:”*”,”dDD”:”*”} including fields for specific 2-digit days.
-- Change curly double quotes (possibly used for easier editing in tabular data) in dFormat
-- to straight ASCII double quotes (required for parsing of this JSON-encoded table).
local D = mw.text.jsonDecode(mw.ustring.gsub(dFormat, '[„“‟”]', '"')) --com = mw.dumpObject(D)
-- If the desired day is not in that JSON table, then use its "default" case.
dFormat = D[string.format('d%02i', day)] or D.default
-- Change ASCII single quotes to ASCII double quotes used for {{#time}} marking.
-- Apostrophes needed in plain-text must not use ASCII single quotes but curly apostrophe
-- e.g. { ‟default”: ‟j”, ‟d01”: ‟j’'o'” }, not { ‟default”: ‟j”, ‟d01”: ‟j''o'” }.
end
dFormat = dFormat:gsub("'", '"')
return dFormat
end
local T = {}
local tab = mw.ext.data.get('DateI18n.tab', lang)
for _, row in pairs(tab.data) do -- convert the output into a dictionary table
local id, _, msg = unpack(row)
T[id] = msg
end
-- Compatibility of legacy data using 'HMS' or 'HM', where 'M' is ambiguous
T.YMDhms = T.YMDhms or T.YMDHMS
T.YMDhm = T.YMDhm or T.YMDHM
datecode = datecode == 'YMDHMS' and 'YMDhms' or datecode == 'YMDHM' and 'YMDhm' or datecode
local dFormat = T[datecode]
if dFormat == 'default' and (datecode == 'YMDhms' or datecode == 'YMDhm') then
-- For most languages adding hour:minute:second is done by adding ", HH:ii:ss to the
-- day precission date, those languages are skipped in DateI18n.tab and default to
-- English which stores word "default"
dFormat = parseFormat(T['YMD'], day).. ', H:i'
if datecode == 'YMDhms' then
dFormat = dFormat .. ':s'
end
else
dFormat = parseFormat(dFormat, day)
end
return dFormat
end
---------------------------------------------------------------------------------------
-- Look up proper format string to be passed to {{#time}} parser function
-- INPUTS:
-- * month : month number
-- * case : gramatic case abbriviation, like "ins", "loc"
-- * lang : language
-- OUTPUT:
-- * dFormat : input to {{#time}} function
local function MonthCase(month, case, lang)
if month == nil or case == nil then
return nil
end
local T = {{},{},{},{},{},{},{},{},{},{},{},{}}
local tab = mw.ext.data.get('I18n/MonthCases.tab', lang)
for _, row in pairs(tab.data) do
local mth, cs, msg = unpack(row)
T[mth][cs] = msg
end
return T[month][case]
end
-- ==================================================
-- === External functions ===========================
-- ==================================================
local p = {}
-- ===========================================================================
-- === Functions accesible from the outside to allow unit-testing
-- === Please do not use directly as they could change in the future
-- ===========================================================================
---------------------------------------------------------------------------------------
-- Single string replacement that ignores part of the string in "..."
function p.strReplace(String, old, new)
if String:find('"') then
local T={}
for i, str in ipairs(mw.text.split( String, '"', true )) do
if i%2==1 then
str = str:gsub(old, new, 1)
end
table.insert(T, str)
end
return table.concat(T,'"')
else
return String:gsub(old, new, 1)
end
end
---------------------------------------------------------------------------------------
-- process datevec
-- INPUT:
-- * datevec - Array of {year,month,day,hour,minute,second, tzhour, tzmin} containing broken
-- down date-time component strings or numbers
-- OUTPUT:
-- * datenum - same array but holding only numbers or nuls
function p.clean_datevec(datevec)
-- create datecode based on which variables are provided and check for out-of-bound values
-- check special case of month provided as a name
local month = datevec[2]
if type(month) == 'string' and month ~= '' and not tonumber(month) then
-- When the month is not a number, check if it's a month name in the project's language.
datevec[2] = mw.getContentLanguage():formatDate('n', month)
end
-- check bounds
local maxval = { 1/0, 12, 31, 23, 59, 59, 23, 59 } -- max values (or 1/0=+inf) for year, month, day, hour, minute, second, tzhour, tzmin
local minval = { -1/0, 01, 01, 00, 00, 00, -23, 00 } -- min values (or -1/0=-inf) for year, month, ...
local datenum = {} -- date-time encoded as a vector = [year, month, ... , second, tzhour, tzmin]
for i = 1, 8 do
local val = tonumber(datevec[i])
if val and val >= minval[i] and val <= maxval[i] then -- These tests work with infinite min/max values.
datenum[i] = val
end
end
-- leap second
if tonumber(datevec[6]) == 60 then -- leap second '60' is valid only at end of 23:59 UTC, on 30 June or 31 December of specific years
-- datenum[6] = 60
local MDhm = table.concat({unpack(datenum,2,5)}, ',')
if (MDhm == table.concat({6, 30, 23, 59}, ',')) or (MDhm == table.concat({12, 31, 23, 59}, ',')) then
datenum[6] = 60
end
end
return datenum
end
---------------------------------------------------------------------------------------
-- process datevec
-- INPUT:
-- * datenum - Array of {year,month,day,hour,minute,second, tzhour, tzmin} as numbers or nuls
-- OUTPUT:
-- * timeStamp - date string in the format taken by mw.language:formatDate lua function and {{#time}} parser function
-- https://www.mediawiki.org/wiki/Extension:Scribunto/Lua_reference_manual#mw.language:formatDate
-- https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions#.23time
-- * datecode - a code specifying content of the array where Y' is year, 'M' is month,
-- 'D' is day, 'h' is hour, 'm' minute, 's' is second.
-- Output has to be one of YMDhms, YMDhm, YMD, YM, Y, MDhms, MDhm, MD, M.
function p.getTimestamp(datenum)
-- create datecode based on datenum
local codes = { 'Y', 'M', 'D', 'h', 'm', 's'}
local datecode = '' -- a string signifying which combination of variables was provided
for i, c in ipairs(codes) do
datecode = datecode .. (datenum[i] and c or '') -- if datenum[i] than append codes[i] to datecode
end
-- create timestamp string (for example 2000-02-20 02:20:20) based on which variables were provided
local timeStamp
-- date starting by a year
if datecode == 'YMDhms' then
timeStamp = string.format('%04i-%02i-%02i %02i:%02i:%02i', datenum[1], datenum[2], datenum[3], datenum[4], datenum[5], datenum[6] )
elseif datecode == 'YMDhm' then
timeStamp = string.format('%04i-%02i-%02i %02i:%02i', datenum[1], datenum[2], datenum[3], datenum[4], datenum[5] )
elseif datecode:sub(1,3)=='YMD' then
timeStamp = string.format('%04i-%02i-%02i', datenum[1], datenum[2], datenum[3] )
datecode = 'YMD' -- 'YMDhms', 'YMDhm' and 'YMD' are the only supported format starting with 'YMD'; all others will be converted to 'YMD'.
elseif datecode:sub(1,2) == 'YM' then
timeStamp = string.format('%04i-%02i', datenum[1], datenum[2] )
datecode = 'YM'
elseif datecode:sub(1,1)=='Y' then
timeStamp = string.format('%04i', datenum[1] )
datecode = 'Y'
-- date starting by a month (the implied year is 2000)
elseif datecode== 'MDhms' then
timeStamp = string.format('%04i-%02i-%02i %02i:%02i:%02i', 2000, datenum[2], datenum[3], datenum[4], datenum[5], datenum[6] )
elseif datecode == 'MDhm' then
timeStamp = string.format('%04i-%02i-%02i %02i:%02i', 2000, datenum[2], datenum[3], datenum[4], datenum[5] )
elseif datecode:sub(1,2) == 'MD' then
timeStamp = string.format('%04i-%02i-%02i', 2000, datenum[2], datenum[3] )
datecode = 'MD' -- 'MDhms', 'MDhm' and 'MD' are the only supported format starting with 'MD'; all others will be converted to 'MD'
elseif datecode:sub(1,1) == 'M' then -- Ambiguous: could mean minutes, but here means month (when parsed as a name/abbrev, not as a number).
timeStamp = string.format('%04i-%02i-%02i', 2000, datenum[2], 1 )
datecode = 'M'
-- other possible but unrecognized formats (e.g. 'DHis', 'DHi', 'D', 'His', 'Hi');
-- note that 'Dh', 'D', 'h', 's' may eventually work, but not 'm' for minute only, which is ambiguous with 'M' for month only.
else
timeStamp = nil -- format not supported
end
return timeStamp, datecode
end
-- ===========================================================================
-- === Version of the function to be called from other LUA codes
-- ===========================================================================
--[[ ========================================================================================
Date
This function is the core part of the ISOdate template.
Usage:
local Date = require('Module:DateI18n')._Date
local dateStr = Date({2020, 12, 30, 12, 20, 11}, lang)
Parameters:
* {year,month,day,hour,minute,second, tzhour, tzmin}: broken down date-time component strings or numbers
tzhour, tzmin are timezone offsets from UTC, hours and minutes
* lang: The language to display it in
* case: Language format (genitive, etc.) for some languages
* class: CSS class for the <time> node, use "" for no metadata at all
]]
function p._Date(datevec, lang, case, class, trim_year)
-- make sure inputs are in the right format
if not lang or not mw.language.isValidCode( lang ) then
lang = mw.getCurrentFrame():callParserFunction( "int", "lang" ) -- get user's chosen language
end
if lang == 'be-tarask' then
lang = 'be-x-old'
end
-- process datevec and extract timeStamp and datecode strings as well as numeric datenum array
local datenum = p.clean_datevec(datevec)
local year, month, day = datenum[1], datenum[2], datenum[3]
local timeStamp, datecode = p.getTimestamp(datenum)
if not timeStamp then -- something went wrong in parserDatevec
return ''
end
-- Commons [[Data:DateI18n.tab]] page stores prefered formats for diferent
-- languages and datecodes (specifying year-month-day or just year of month-day, etc)
-- Look up country specific format input to {{#time}} function
local dFormat = getDateFormat(datecode, day, lang)
-- By default the gramatical case is not specified (case=='') allowing the format to be specified
-- in [[Data:DateI18n.tab]]. You can overwrite the default grammatical case of the month by
-- specifying "case" variable. This is needed mostly by Slavic languages to create more complex
-- phrases as it is done in [[c:Module:Complex date]]
case = case or ''
if (lang=='qu' or lang=='qug') and case=='nom' then
-- Special case related to Quechua and Kichwa languages. The form in the I18n is
-- Genitive case with suffix "pi" added to month names provided by {#time}}
-- in Nominative case that "pi" should be removed
-- see https://commons.wikimedia.org/wiki/Template_talk:Date#Quechua from 2014
dFormat = dFormat:gsub('F"pi"', 'F')
elseif case == 'gen' then
dFormat = p.strReplace(dFormat, "F", "xg")
elseif case == 'nom' then
dFormat = p.strReplace(dFormat, "xg", "F")
elseif case ~= '' and month ~= nil then
-- see is page [[Data:I18n/MonthCases.tab]] on Commons have name of the month
-- in specific gramatic case in desired language. If we have it than replace
-- "F" and xg" in dFormat
local monthMsg = MonthCase(month, case, lang)
if monthMsg and monthMsg ~= '' then -- make sure it exists
dFormat = p.strReplace(dFormat, 'F', '"'..monthMsg..'"') -- replace default month with month name we already looked up
dFormat = p.strReplace(dFormat, 'xg', '"'..monthMsg..'"')
end
end
-- Translate the date using specified format.
-- See https://www.mediawiki.org/wiki/Extension:Scribunto/Lua_reference_manual#mw.language:formatDate and
-- https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions##time for explanation of the format
local langObj = mw.language.new(lang)
local datestr = langObj:formatDate(dFormat, timeStamp) -- same as using {{#time}} parser function
-- Special case related to Thai solar calendar: prior to 1940 new-year was at different time of year,
-- so just year (datecode == 'Y') is ambiguous and is replaced by "YYYY or YYYY" phrase
if lang=='th' and datecode=='Y' and year<=1940 then
datestr = string.format('%04i หรือ %04i', year+542, year+543 )
end
-- If year < 1000 than either keep the date padded to the length of 4 digits or trim it.
-- Decide if the year will stay padded with zeros (for years in 0-999 range).
if year and year < 1000 then
trim_year = yesno(trim_year, trim_year or '100-999')
if type(trim_year) == 'string' then
-- If `trim_year` not a simple boolean, then it's a range of dates.
-- For example '100-999' means to pad 1-or-2-digit years to be 4-digit long, while keeping 3-digit years as is.
local YMin, YMax = trim_year:match( '(%d+)-(%d+)' )
trim_year = YMin and year >= tonumber(YMin) and year <= tonumber(YMax)
end
if trim_year then
datestr = trimYear(datestr, year, lang) -- in datestr replace long year with trimmed one
end
end
-- Append a timezone if present (after the hour and minute of the day).
if datenum[7] and (datecode:sub(1, 5) == 'YMDhm' or datecode:sub(1, 4) == 'MDhm') then
-- Use {{#time}} parser function to create timezone string, so that we use the correct character set.
local sign = (datenum[7]<0) and '−' or '+'
timeStamp = string.format("2000-01-01 %02i:%02i:00", math.abs(datenum[7]), datenum[8] or 0)
local timezone = langObj:formatDate('H:i', timeStamp) -- same as using {{#time}} parser function
datestr = string.format("%s %s%s", datestr, sign, timezone )
end
-- HTML formating of date string and tagging for microformats (only for absolute dates with a year).
if class and class ~= '' and class ~= '-' and datecode:sub(1,1) == 'Y' then
local pat = '<time class="%s" datetime="%s" lang="%s" dir="%s" style="white-space:nowrap">%s</time>'
datestr = pat:format(class, timeStamp, lang, langObj:getDir(), datestr)
end
return datestr
end
-- ===========================================================================
-- === Versions of the function to be called from template namespace
-- ===========================================================================
--[[ ========================================================================================
Date
This function is the core part of the ISOdate template.
Usage:
{{#invoke:DateI18n|Date|year=|month=|day=|hour=|minute=|second=|tzhour=|tzmin=|lang=en}}
Parameters:
* year, month, day, hour, minute, second: broken down date-time component strings
* tzhour, tzmin: timezone offset from UTC, hours and minutes
* lang: The language to display it in
* case: Language format (genitive, etc.) for some languages
* class: CSS class for the <time> node, use "" for no metadata at all
]]
function p.Date(frame)
local args = {}
for name, value in pairs( frame.args ) do
name = string.gsub( string.lower(name), ' ', '_')
args[name] = value
end
return p._Date(
{ args.year, args.month, args.day, args.hour, args.minute, args.second, args.tzhour, args.tzmin },
args.lang, -- language
args.case, -- allows to specify grammatical case for the month for languages that use them
args.class or 'dtstart', -- allows to set the html class of the time node where the date is included. This is useful for microformats.
args.trim_year or '100-999' -- by default pad one and 2 digit years to be 4 digit long, while keeping 3 digit years as is
)
end
return p