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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
]]
require('Module:No globals')
-- ==================================================
-- === Internal functions ===========================
-- ==================================================
-- Function allowing for consistent treatment of boolean-like wikitext input.
-- It works similarly to Module:Yesno
local function yesno(val, default)
if type(val) == 'boolean' then
return val
elseif type(val) == 'number' then
if val==1 then
return true
elseif val==0 then
return false
end
elseif type(val) == 'string' then
val = mw.ustring.lower(val) -- put in lower case
if val == 'no' or val == 'n' or val == 'false' or tonumber(val) == 0 then
return false
elseif val == 'yes' or val == 'y' or val == 'true' or tonumber(val) == 1 then
return true
end
end
return default
end
---------------------------------------------------------------------------------------
-- String replacement that ignores part of the string in "..."
local function 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)
end
table.insert(T, str)
end
return table.concat(T,'"')
else
return String:gsub(old, new)
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:
-- * 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, MD, Y
-- * datenum - same array but holding only numbers or nuls
local function parserDatevec(datevec)
-- if month is not a number than check if it is a month name in project's language
local month = datevec[2]
if month and month~='' and not tonumber(month) then
datevec[2] = mw.getContentLanguage():formatDate( "n", month)
end
--
local maxval = {nil, 12, 31, 23, 59, 59, 23, 59} -- max values for year, month, ...
local minval = {nil, 1, 1, 0, 0, 0, -23, 0} -- min values for year, month, ...
local c = {'Y', 'M', 'D', 'H', 'M', 'S', '', ''}
local datecode = '' -- a string signifying which combination of variables was provided
local datenum = {} -- date-time encoded as a vector = [year, month, ... , second]
for i
datenum[i] = tonumber(datevec[i])
if datenum[i] and (i==1 or (datenum[i]>=minval[i] and datenum[i]<=maxval[i])) then
datecode = datecode .. c[i]
end
end
return datecode, datenum
end
---------------------------------------------------------------------------------------
-- process datevec
-- INPUT:
-- * 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, MD, Y
-- * 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}} perser function
-- https://www.mediawiki.org/wiki/Extension:Scribunto/Lua_reference_manual#mw.language:formatDate
-- https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions#.23time
-- * datecode - with possible corrections
local function getTimestamp(datecode, datenum)
-- create time stamp string (for example 2000-02-20 02:20:20) based on which variables were provided
local timeStamp
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elseif datecode == 'M' then
timeStamp = string.format('%04i-%02i-%02i', 2000, datenum[2], 1 )
elseif datecode == 'MD' then
timeStamp = string.format('%04i-%02i-%02i', 2000, datenum[2], datenum[3] )
else
end
return timeStamp, datecode
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, MD, Y, 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
-- then json contains a string with more json containing "default" field and 2 digit day keys
-- if desired day is not in that json than use "default" case
dFormat = dFormat:gsub('”','"') -- change fancy double quote to a straight one, used for json marking
local D = mw.text.jsonDecode( dFormat ) --com = mw.dumpObject(D)
day = string.format('d%02i',day) -- create day key
dFormat = D[day] or D.default
dFormat = dFormat:gsub("'", '"') -- change single quote to a double quote, used for {{#time}} marking
end
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
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:MM: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)
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 = {}
--[[ ========================================================================================
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-tarsk' then
lang = 'be-x-old'
end
-- process datevec and extract timeStamp and datecode strings as well as numeric datenum array
local datecode, datenum = parserDatevec(datevec)
local year, month, day = datenum[1], datenum[2], datenum[3]
local timeStamp, datecode = getTimestamp(datecode, 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 = strReplace(dFormat, "F", "xg")
elseif (case=='nom') then
dFormat = strReplace(dFormat, "xg", "F")
elseif (case ~= '') 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 = strReplace(dFormat, 'F', '"'..monthMsg..'"') -- replace default month with month name we already looked up
dFormat = strReplace(dFormat, 'xg', '"'..monthMsg..'"')
end
end
-- 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 datestr = mw.
--
-- 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
-- decide if the year will stay padded with zeros (for years in 0-999 range)
if
trim_year = '100-999'
end
local trim = yesno(trim_year,nil) -- convert to boolean
if trim==nil and type(trim_year)=='string' then
-- if "trim_year" not a simple True/False than it is range of dates
-- for example '100-999' means to pad one and 2 digit years to be 4 digit long, while keeping 3 digit years as is
local YMin, YMax = trim_year:match( '(%d+)-(%d+)' )
trim = (YMin~=nil and
end
if trim==true then
datestr = trimYear(datestr, year, lang) -- in datestr replace long year with trimmed one
end
end
-- append timezone if present
if
-- use {{#time}} parser function to create timezone string, so that we use correct character set
local timezone = mw.language.new(lang):formatDate( 'H:i', timeStamp) -- same as using {{#time}} parser function
datestr =
end
-- html formating and tagging of date string
if class and class ~= '' and datecode~='M' and datecode~='MD'then
local DateHtmlTags = '<span style="white-space:nowrap"><time class="%s" datetime="%s">%s</time></span>'
datestr = DateHtmlTags:format(class, timeStamp, datestr)
end
return datestr
end
--[[ ========================================================================================
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
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