Module:LoadData
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A more complex version of Module:Data with more options and the ability to select indexes with an inequality operator.
Usage
{{#invoke:LoadData|Module name|index1|2 lteq=index2 limit|...|}} - Zeroth parameter is the name of the data module to read, without Module:, e.g.
Example/data - Next parameters, for an index N starting at one, are called
|N=for the exact index you need, coerced to number if possible,|N lteq=to select the highest numerical index less than or equal to the argument, or|N gteq=for the opposite. |template=is a printf-style string to interpolate the resulting value(s) into, e.g.<b>%s</b>.|preprocess=is like|template=except thatframe:preprocessis run on it; this makes e.g. template transclusions work.|if nil=is the string to return if the result is nil. Default is nil, which comes out as the empty string.
local p = {} -- Finds the next key key <= or >= the given i. -- operator is ±1 local function findItemRange(data, i, operator) local bestIndex = nil i = i * operator for k, v in pairs(data) do local kop = type(k) == 'number' and k * operator if kop and kop <= i and (bestIndex == nil or kop > bestIndex * operator) then bestIndex = k end end if bestIndex then return data[bestIndex] else return nil end end local function load(datamodule, frame) local args = frame.args local data = mw.loadData(datamodule) for i = 1, 20 do if args[i] then data = data[tonumber(args[i]) or args[i]] elseif args[i .. ' lteq'] then data = findItemRange(data, tonumber(args[i .. ' lteq']), 1) elseif args[i .. ' gteq'] then data = findItemRange(data, tonumber(args[i .. ' gteq']), -1) else break end end if data == nil then return args['if_nil'] -- not a required argument, OK to return nil here. end if type(data) == 'table' then -- Put the table into another table because the return value of loadData -- is a "fake" table that only has certain metamethods. local realdata = {} for k, v in pairs(data) do realdata[k] = v end data = realdata else data = { data } end if args['template'] then return mw.text.unstripNoWiki(args['template']):format(unpack(data)) elseif args['preprocess'] then return frame:preprocess(mw.text.unstripNoWiki(args['preprocess']):format(unpack(data))) else return table.concat(data) end end return setmetatable({}, { __index = function(t, k) return function(frame) return load('Module:' .. k, frame) end end })