Module:Hani-sortkey/sandbox

local export = {}

local namespace = mw.title.getCurrentTitle.nsText

local substring = mw.ustring.sub

local function log(...) if namespace == "Module" then mw.log(...) end end

--	The number of characters or ideographic sequences that must follow each	ideographic description character. local IDchars = { ["⿰"] = 2,	["⿱"] = 2,	["⿲"] = 3,	["⿳"] = 3,	["⿴"] = 2,	["⿵"] = 2,	["⿶"] = 2,	["⿷"] = 2,	["⿸"] = 2,	["⿹"] = 2,	["⿺"] = 2,	["⿻"] = 2,	--	-- in future perhaps: https://www.unicode.org/L2/L2018/18012-irgn2273-four-new-idcs.pdf	[mw.ustring.char(0x2FFC)] = 2,	[mw.ustring.char(0x2FFD)] = 2,	[mw.ustring.char(0x2FFE)] = 1,	[mw.ustring.char(0x2FFF)] = 1,	-- }

--	Returns the index in the string where the ideographic description sequence	(IDS) ends, or the index of the end of the string. Iterates whenever	another ideographic description character (IDC) is found. local function findEndOfIDS(text, IDchar, i)	if not ( text and IDchar and i) then return nil end local j = i	local component = 1 -- Number of components expected after current IDC. local components = IDchars[IDchar] while component <= components do		j = j + 1 local char = substring(text, j, j)		if char == "" then break elseif IDchars[char] then j = findEndOfIDS(text, char, j)		end component = component + 1 end --		If the expected number of components has been found,		return the current index in the text. if component - components == 1 then return j	else return nil end end

local module_cache = {}

function export.getData(char, returnModule) if type(char) == "string" then char = mw.ustring.codepoint(char) elseif type(char) ~= number then error("getData must operate on a single character or codepoint.") end local data = mw.loadData("Module:Hani-sortkey/data/sandbox") local sectionStart = { 0x3400, 0xFA0E, 0x20000, 0x30000, math.huge }	for k, v in ipairs(sectionStart) do		if char < v then local start = 5 * (char - sectionStart[k - 1]) + 1 return data[k - 1]:sub(start, start + 4) end end end

local unsupported_data

function export.makeSortKey(text, lang, sc) local scripts = { Hani = true, Hans = true, Hant = true, Jpan = true, Kore = true }	if sc and not scripts[sc] then return mw.ustring.upper(text) end local sort = {} local i = 1 while i <= mw.ustring.len(text) do		local character = substring(text, i, i)		--[=[ If we encounter an ideographic description character (IDC), find out if it begins a valid ideographic description sequence (IDS). If the IDS is valid and a sortkey for it is listed in			Module:Hani-sortkey/data/unsupported, then return the sortkey, and move to the next character after the IDS. Otherwise, insert the IDC into the sortkey and move to the next character after the IDC. If the IDS is valid and no sortkey for it is found, track it. ]=]		if IDchars[character] then local j = findEndOfIDS(text, character, i)			local IDS, data if j then IDS = substring(text, i, j)				unsupported_data = unsupported_data or mw.loadData("Module:Hani-sortkey/data/unsupported") data = unsupported_data[IDS] end if not data then if IDS then require("Module:debug").track("Hani-sortkey/IDS-without-sortkey") mw.log("ideographic description sequence without sortkey: '"						.. IDS .. "'") else require("Module:debug").track("Hani-sortkey/invalid-IDS") mw.log("invalid ideographic description sequence at the beginning of '"						.. substring(text, i) .. "'") end end if IDS and data then table.insert(sort, data) i = j			else table.insert(sort, character) end else table.insert(sort, export.getData(character) or character) end i = i + 1 end sort = table.concat(sort)

return sort end

return export