Module:Authority control/auxiliary

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require('strict')
local p = {}
--[[======================================================]]
--[[            Format validation functions               ]]
--[[======================================================]]
function p.botanistV(id)
	return mw.ustring.match(id,"^[%u%l%d%. '-]+$")
end

-- NCDA: NOID Check Digit Algorithm; see [[wikipedia:Check digit#NCDA]]
local ncda -- leave this as a local since NCDA is commonly used among ARK identifiers and could be useful for validating other identifiers later
do -- initialize these constants only once but scope them in a block so local namespace doesn't get cluttered with these
	local r29s = [[0123456789bcdfghjkmnpqrstvwxz]] -- radix 29 "betanumeric" digit string
	local r29n = r29s:len()
	local r29v2d, r29d2v = {}, {}
	for i = 1, r29n do
		local v, d = i-1, r29s:sub(i, i)
		r29v2d[v], r29d2v[d] = d, v
	end
	function ncda(sid)
		local n, sum = sid:len(), 0
		for i = 1, n do
			sum = sum + i * (r29d2v[sid:sub(i, i)] or 0)
		end
		return r29v2d[sum % r29n]
	end
end
function p.validateBNF(id)
	local FRBNF = id:sub(1, -2)
	return FRBNF:match('^%d%d%d%d%d%d%d%d$') ~= nil and ncda('cb'..FRBNF) == id:sub(-1) and id
end

function p.validateIsni(id) --Validate ISNI (and ORCID) and returns it as a 16 characters string or returns false if it's invalid. See http://support.orcid.org/knowledgebase/articles/116780-structure-of-the-orcid-identifier
	id = id:gsub( '[ %-]', '' ):upper()
	if not id:match( '^%d%d%d%d%d%d%d%d%d%d%d%d%d%d%d[%dX]$' ) then
		return false
	end
	local total = 0
	for i = 1, 15 do
		local digit = id:byte( i ) - 48 --Get integer value
		total = (total + digit) * 2
	end
	local remainder = total % 11
	local result = (12 - remainder) % 11
	local checkdigit
	if result == 10 then
		checkdigit = 'X'
	else
		checkdigit=tostring( result )
	end
	if checkdigit ~= string.char( id:byte( 16 ) ) then
		return false
	end
	return id
end

function p.orcidV(id)
	id = p.validateIsni(id)
	if not id then
		return false
	end
	return id:sub( 1, 4 )..'-'..id:sub( 5, 8 )..'-'..id:sub( 9, 12 )..'-'..id:sub( 13, 16 )
end

function p.tlsV(id)
	id = id:gsub(' +', '_')
	local idlen = mw.ustring.len(id)
	if idlen < 4 or idlen > 90 then
		return false
	end
	local regex = '^%u'..string.rep("[%w_',%.%-%(%)%*%/–&]", idlen - 1)..'$'
	if not mw.ustring.match(id,regex ) then
		return false
	end
	return id
end

--[[======================================================]]
--[[                Custom link functions                 ]]
--[[======================================================]]
function p.ISILlink(id,label)
	if not id:match('^%D%D?%D?%D?%-.+$') then
		return false
	end
	for _,prefix in ipairs({'AT','AU','BE','CA','CH','DE','FI','FR','IT','KR','NZ','US','ZDB'}) do
		if id:match('^'..prefix..'%-') then
			return '<span class="uid">[https://w3id.org/isil/'..id..' ' .. (label or 'ISIL') .. ']</span>'
		end
	end
	return '[[International Standard Identifier for Libraries and Related Organizations|ISIL]]\n**<span class="uid">' .. id .. '</span>'
end

function p.uscgLink(id)
	local id2 = id:match( '^[1-7]%-%d%d?%d?%d?%d?$' ) or id:match( '^[1-7]%-%d%d?%d?%d?%d?%.%d*[1-9]$' )
	if id2 then
		return '<span class="uid">[https://www.navcen.uscg.gov/pdf/lightlists/LightList%20V'..mw.ustring.sub(id2,1,1)..'.pdf '..id2..']</span>'
	else
		return false
	end
end

function p.ccg(id)
	id = id:match('^[NAIP]?[1-9]%d*$') or id:match('^[NAIP]?[1-9]%d*%.%d+$')
	if not id then return false end
	local link = 'https://www.notmar.gc.ca/'
	local prefix = string.sub(id, 1, 1) -- get first character of id
	local suffix = string.sub(id, 2) -- remove first character of id
	local interval = require('Module:Interval')._main
	local v
	if prefix=='N' then
		local int = interval({1,7.5,14.4,100,121,173,211,235,269.99,326,396,450.1,471.7,499,n=suffix})
		if int=='1-2' then v = 1
		elseif int=='2-3' then v = 75
		elseif int=='3-4' then v = 144
		elseif int=='4-5' then v = 100
		elseif int=='5-6' then v = 121
		elseif int=='6-7' then v = 173
		elseif int=='7-8' then v = 211
		elseif int=='8-9' then v = 235
		elseif int=='9-10' then v = 26999
		elseif int=='10-11' then v = 326
		elseif int=='11-12' then v = 396
		elseif int=='12-13' then v = 4501
		elseif int=='13-14' then v = 4717
		elseif int=='14-15' then v = 499
		end
		link = link .. 'publications/list-lights/newfoundland/n' .. v .. '-en'
	elseif prefix=='A' then
		local int = interval({5,114.5,145,163,268,271,301.5,327,686.5,704.85,883.2,942,1085,1169.1,1584.5,1773,1823.55,2190,2369,2389,n=suffix})
		if int=='1-2' then v = 5
		elseif int=='2-3' then v = 1145
		elseif int=='3-4' then v = 145
		elseif int=='4-5' then v = 162
		elseif int=='5-6' then v = 268
		elseif int=='6-7' then v = 271
		elseif int=='7-8' then v = 3015
		elseif int=='8-9' then v = 327
		elseif int=='9-10' then v = 6865
		elseif int=='10-11' then v = 7048
		elseif int=='11-12' then v = 883
		elseif int=='12-13' then v = 942
		elseif int=='13-14' then v = 1085
		elseif int=='14-15' then v = 11691
		elseif int=='15-16' then v = 15845
		elseif int=='16-17' then v = 1773
		elseif int=='17-18' then v = 182355
		elseif int=='18-19' then v = 2190
		elseif int=='19-20' then v = 2369
		elseif int=='20-21' then v = 2389
		end
		link = link .. 'publications/list-lights/atl/a' .. v .. '-en'
	elseif prefix=='I' then
		local int = interval({0.05,401.1,403.4,551.06,552,624,708,731.2,768,814,983,1046,1059.6,1082,1162,1204.7,1233.3,1328,1330,1346.2,1377.8,1408,1410,1420,1445,1470,1520,1534,1540.6,1554,1557.7,1558.8,1563.1,1625.5,1671.7,1716.96,2545,n=suffix})
		if int=='1-2' then v = '01'
		elseif int=='2-3' then v = 4011
		elseif int=='3-4' then v = 4034
		elseif int=='4-5' then v = 55106
		elseif int=='5-6' then v = 552
		elseif int=='6-7' then v = 624
		elseif int=='7-8' then v = 708
		elseif int=='8-9' then v = 7312
		elseif int=='9-10' then v = 768
		elseif int=='10-11' then v = 814
		elseif int=='11-12' then v = 983
		elseif int=='12-13' then v = 1046
		elseif int=='13-14' then v = 10596
		elseif int=='14-15' then v = 1082
		elseif int=='15-16' then v = 1162
		elseif int=='16-17' then v = 12047
		elseif int=='17-18' then v = 12333
		elseif int=='18-19' then v = 1328
		elseif int=='19-20' then v = 1330
		elseif int=='20-21' then v = 13462
		elseif int=='21-22' then v = 13778
		elseif int=='22-23' then v = 1408
		elseif int=='23-24' then v = 1410
		elseif int=='24-25' then v = 1420
		elseif int=='25-26' then v = 1445
		elseif int=='26-27' then v = 1470
		elseif int=='27-28' then v = 1520
		elseif int=='28-29' then v = 1534
		elseif int=='29-30' then v = 15406
		elseif int=='30-31' then v = 1554
		elseif int=='31-32' then v = 15577
		elseif int=='32-33' then v = 15588
		elseif int=='33-34' then v = 1562
		elseif int=='34-35' then v = 16255
		elseif int=='35-36' then v = 16717
		elseif int=='36-37' then v = 171696
		elseif int=='37-38' then v = 2545
		end
		link = link .. 'publications/list-lights/inland-waters/i' .. v .. '-en'
	elseif prefix=='P' then
		link = link .. 'publications/list-lights/pac/p'
	else
		link = link .. 'list-lights'
	end
	return '[[CCG (identifier)|CCG]] <span class="uid">[' .. link .. ' ' .. id .. ']</span>'
end

return p