Module:I18n/date

local p = {}

--[[ Different languages use different date formats, and many formats are shared among whole families of languages. 
"DateLang" picks a cluster of languages associated with a single date format, based on the language to be used. 
All unlisted languages default to English form. Languages like "de-formal" follows regular language fallback chain 
and would default to German, and only if that does not exist then to English.
]]

p.DateLang = {
	['ar'] 		= 'en-form', -- Arabic
	['be'] 		= 'ru-form', -- Belarusian
	['be-tarsk'] 	= 'ru-form', -- Belarusian (Tara۫ievica)
	['bn'] 		= 'bn-form', -- Bengali
	['bpy'] 	= 'bpy-form', -- Bishnupuriya Manipuri
	['cs'] 		= 'cs-form', -- Czech
	['da'] 		= 'de-form', -- Danish
	['de'] 		= 'de-form', -- German
	['el'] 		= 'ru-form', -- Greek
	['en'] 		= 'en-form', -- English
	['eo'] 		= 'eo-form', -- Esperanto
	['es'] 		= 'es-form', -- Spanish
	['et'] 		= 'de-form', -- Estonian
	['fa'] 		= 'en-form', -- Persian
	['fi'] 		= 'fi-form', -- Finnish
	['fr'] 		= 'fr-form', -- French
	['ga'] 		= 'ga-form', -- Gallic
	['gl'] 		= 'es-form', -- Galician based on https://translatewiki.net/wiki/MediaWiki:Pagetriage-info-timestamp-date-format/gl
	['hi'] 		= 'en-form', -- Hindi
	['hr'] 		= 'hr-form', -- Croatian 
	['hu'] 		= 'hu-form', -- Hungarian
	['ia'] 		= 'ia-form', -- Interlingua
	['is'] 		= 'de-form', -- Icelandic
	['ja'] 		= 'zh-form', -- Japanese
	['kn'] 		= 'bn-form', -- Kannada
	['ko'] 		= 'ko-form', -- Korean
	['lt'] 		= 'lt-form', -- Lithuanian
	['lv'] 		= 'lv-form', -- Latvian
	['mk'] 		= 'en-form', -- Macedonian
	['ml'] 		= 'ml-form', -- Malayalam
	['mr'] 		= 'mr-form', -- Marathi
	['new'] 	= 'new-form', -- Newari
	['nn'] 		= 'de-form', -- Norwegian Nynorsk
	['no'] 		= 'de-form', -- Norwegian (bokm欩
	['oc'] 		= 'oc-form', -- Occitan
	['pa'] 		= 'en-form', -- Punjabi
	['pl'] 		= 'ru-form', -- Polish
	['pt'] 		= 'es-form', -- Portuguese
	['qu'] 		= 'qu-form', -- Quechua based on https://translatewiki.net/wiki/MediaWiki:Pagetriage-info-timestamp-date-format/qu
	['qug'] 	= 'qug-form', -- Kichwa based on Template_talk:Date#Kichwa_.5Bqug.5D
	['ru'] 		= 'ru-form', -- Russian
	['sl'] 		= 'sl-form', -- Slovene
	['sr'] 		= 'hr-form', -- Serbian
	['th'] 		= 'th-form', -- Thai solar calendar
	['vi'] 		= 'vi-form', -- Vietnamese
	['zh-hans'] 	= 'zh-form', -- Chinese
}

--[[ Date format parameter which will be passed to {{#time:}} parser function. 
  It depends on the language and which parts of the date need to be displayed. 
  Different forms are:
  * YMDHMS = stands for YYYY:MM:DD, HH:MM:SS format or equivalent
  * YMDHM  = stands for YYYY:MM:DD, HH:MM format or equivalent
  * YMD    = stands for YYYY:MM:DD format or equivalent
  * YM     = stands for YYYY:MM (year-month) format or equivalent
  * MD     = stands for MM:DD (month-day) format or equivalent
  * Y      = stands for YYYY (year only) format or equivalent
  * M      = stands for month name only
  
  See https://www.mediawiki.org/wiki/Help:Extension:ParserFunctions#.23time for documentation
  Original set was developed to match the output of the pre-Lua {{date}} template, preserved as {{date/old}}
]]
p.DateFormat = {
	-- day/month/year languages
	['en-form'] = {
		YMDHMS='j F Y, H:i:s',		
		YMDHM ='j F Y, H:i',		
		YMD   ='j F Y',		
		YM    ='F Y',		
		MD    ='j F',		
		Y     ='Y',
		M     ='F'		
	},
	['de-form'] = {
		YMDHMS='j. F Y, H:i:s',		
		YMDHM ='j. F Y, H:i',		
		YMD   ='j. F Y',		
		YM    ='F Y',		
		MD    ='j. F',		
		Y     ='Y',
		M     ='F'
	},
	['hr-form'] = {
		YMDHMS='j. F Y., H:i:s',		
		YMDHM ='j. F Y., H:i',		
		YMD   ='j. F Y.',		
		YM    ='F Y.',		
		MD    ='j. F',		
		Y     ='Y.',
		M     ='F'
	},
	['ml-form'] = {
		YMDHMS='j F Y, H:i:s',		
		YMDHM ='j F Y, H:i',		
		YMD   ='j F Y',		
		YM    ='F Y',		
		MD    ='F j',		
		Y     ='Y',
		M     ='F'
	},
	['th-form'] = {
		YMDHMS='j F "พ.ศ." xkY, H:i:s',	
		YMDHM ='j F "พ.ศ." xkY, H:i',	
		YMD   ='j F "พ.ศ." xkY',	
		YM    ='F "พ.ศ." xkY',
		MD    ='j F',		
		Y     ='"พ.ศ." xkY',
		M     ='F'
	},
	['fi-form'] = {
		YMDHMS='j. F"ta" Y, H:i:s',	
		YMDHM ='j. F"ta" Y, H:i',	
		YMD   ='j. F"ta" Y',	
		YM    ='F Y',		
		MD    ='j. F"ta"',		
		Y     ='Y',
		M     ='F'
	},
	['es-form'] = {
		YMDHMS='j "de" F "de" Y, H:i:s',	
		YMDHM ='j "de" F "de" Y, H:i',	
		YMD   ='j "de" F "de" Y',	
		YM    ='F "de" Y',		
		MD    ='j "de" F',		
		Y     ='Y',
		M     ='F'
	},
	['oc-form'] = {
		YMDHMS='j F "de" Y, H:i:s',	
		YMDHM ='j F "de" Y, H:i',	
		YMD   ='j F "de" Y',	
		YM    ='F "de" Y',		
		MD    ='j F',			
		Y     ='Y',
		M     ='F'
	},
	['ia-form'] = {
		YMDHMS='j "de" F Y, H:i:s',	
		YMDHM ='j "de" F Y, H:i',	
		YMD   ='j "de" F Y',	
		YM    ='F Y',		
		MD    ='j "de" F',		
		Y     ='Y',
		M     ='F'
	},
	['eo-form'] = {
		YMDHMS='"la" j"-a de" F Y, H:i:s',
		YMDHM ='"la" j"-a de" F Y, H:i',
		YMD   ='"la" j"-a de" F Y',
		YM    ='F Y',		
		MD    ='"la" j"-a de" F',	
		Y     ='Y',
		M     ='F'
	},
	['vi-form'] = {
		YMDHMS='j F "năm" Y, H:i:s',	
		YMDHM ='j F "năm" Y, H:i',	
		YMD   ='j F "năm" Y',	
		YM    ='F "năm" Y',		
		MD    ='j F',		
		Y     ='"năm" Y',
		M     ='F'
	},
	['qu-form'] = {
		YMDHMS='j "ñiqin" F"pi" Y "watapi", H:i:s',	
		YMDHM ='j "ñiqin" F"pi" Y "watapi", H:i',	
		YMD   ='j "ñiqin" F"pi" Y "watapi"',	
		YM    ='F"pi" Y "watapi"',		
		MD    ='j "ñiqin" F"pi"',		
		Y     ='Y',
		M     ='F'
	},
	['qug-form'] = {
		YMDHMS='j "niki" F"pi" Y "watapi", H:i:s',	
		YMDHM ='j "niki" F"pi" Y "watapi", H:i',	
		YMD   ='j "niki" F"pi" Y "watapi"',	
		YM    ='F"pi" Y "watapi"',		
		MD    ='j "niki" F"pi"',		
		Y     ='Y',
		M     ='F'
	},
	
	-- French and Gallic languages require different form for first day of the month and 
	-- different for the other days
	['fr-form'] = {
		YMDHMS='j F Y, H:i:s',		
		YMDHM ='j F Y, H:i',		
		YMD   ='j F Y',		
		YM    ='F Y',		
		MD    ='j F',		
		Y     ='Y',
		M     ='F'
	},
	['ga-form'] = {
		YMDHMS='j F Y, H:i:s',		
		YMDHM ='j F Y, H:i',		
		YMD   ='j F Y',		
		YM    ='F Y',		
		MD    ='j F',		
		Y     ='Y',
		M     ='F'
	},
	['fr-form1'] = { -- 1st of the month form
		YMDHMS='j"<sup>er</sup>" F Y, H:i:s', 
		YMDHM ='j"<sup>er</sup>" F Y, H:i', 
		YMD   ='j"<sup>er</sup>" F Y', 
		YM    ='F Y', 	
		MD    ='j"<sup>er</sup>" F', 
		Y     ='Y',
		M     ='F'
	},
	['ga-form1'] = { -- 1st of the month form
		YMDHMS='j"<sup>ú</sup>" F Y, H:i:s',  
		YMDHM ='j"<sup>ú</sup>" F Y, H:i',  
		YMD   ='j"<sup>ú</sup>" F Y',  
		YM    ='F Y', 	
		MD    ='j"<sup>ú</sup>" F',  
		Y     ='Y',
		M     ='F'
	},
		
	-- day/month/year slavic languages
	['ru-form'] = {
		YMDHMS='j xg Y, H:i:s',		
		YMDHM ='j xg Y, H:i',		
		YMD   ='j xg Y',		
		YM    ='F Y',		
		MD    ='j xg',		
		Y     ='Y',
		M     ='F'
	},
	['cs-form'] = {
		YMDHMS='j. xg Y, H:i:s',		
		YMDHM ='j. xg Y, H:i',		
		YMD   ='j. xg Y',		
		YM    ='F Y',		
		MD    ='j. xg',		
		Y     ='Y',
		M     ='F'
	},
	['sl-form'] = {
		YMDHMS='j. xg Y&nbsp;ob H.i.s',	
		YMDHM ='j. xg Y&nbsp;ob H.i',	
		YMD   ='j. xg Y',		
		YM    ='F Y',		
		MD    ='j. xg',		
		Y     ='Y',
		M     ='F'
	},
		
	-- year/month/day languages
	['zh-form'] = {
		YMDHMS='Y年Fj日, H:i:s',		
		YMDHM ='Y年Fj日, H:i',		
		YMD   ='Y年Fj日',		
		YM    ='Y年F',		
		MD    ='Fj日',		
		Y     ='Y年',
		M     ='F'
	},
	['ko-form'] = {
		YMDHMS='Y년 F j일, H:i:s',	
		YMDHM ='Y년 F j일, H:i',		
		YMD   ='Y년 F j일',		
		YM    ='Y년 F',		
		MD    ='F j일',		
		Y     ='Y년',
		M     ='F'
	},
	['hu-form'] = {
		YMDHMS='Y. F j., H:i:s',		
		YMDHM ='Y. F j., H:i',		
		YMD   ='Y. F j.',		
		YM    ='Y. F',		
		MD    ='F j.',		
		Y     ='Y',
		M     ='F'
	},
	['lt-form'] = {
		YMDHMS='Y "m". F j "d"., H:i:s',	
		YMDHM ='Y "m". F j "d"., H:i',	
		YMD   ='Y "m". F j "d".',	
		YM    ='Y "m". F',		
		MD    ='F j "d".',		
		Y     ='Y "m".',
		M     ='F'
	},
			
	-- year/day/month languages
	['lv-form'] = {
		YMDHMS='Y". gada" j. F, H:i:s',	
		YMDHM ='Y". gada" j. F, H:i',	
		YMD   ='Y". gada" j. F',	
		YM    ='Y". gada" F',	
		MD    ='j. F',		
		Y     ='Y". gada"',
		M     ='F'
	},
		
	-- month/day/year languages
	['bn-form'] = {
		YMDHMS='F j, Y, H:i:s',		
		YMDHM ='F j, Y, H:i',		
		YMD   ='F j, Y',		
		YM    ='F, Y',		
		MD    ='F j',		
		Y     ='Y',
		M     ='F'
	}, 
	['bpy-form']= {
		YMDHMS='F j, মারি Y, H:i:s',	
		YMDHM ='F j, মারি Y, H:i',		
		YMD   ='F j, মারি Y',	
		YM    ='F, মারি Y',		
		MD    ='F j',		
		Y     ='মারি Y',
		M     ='F'
	},
	['mr-form'] = {
		YMDHMS='F j, इ.स. Y, H:i:s',	
		YMDHM ='F j, इ.स. Y, H:i',	
		YMD   ='F j, इ.स. Y',	
		YM    ='F, इ.स. Y',		
		MD    ='F j',		
		Y     ='इ.स. Y',
		M     ='F'
	},
	['new-form']= {
		YMDHMS='F j, ई सं  Y, H:i:s',	
		YMDHM ='F j, ई सं  Y, H:i',	
		YMD   ='F j, ई सं  Y',	
		YM    ='F, ई सं  Y',		
		MD    ='F j',		
		Y     ='ई सं Y',
		M     ='F'
	},
}
 
return p