Wikipedia>Lemondoge: enclose the pipe capture in a separate thingamajig

2023-05-11T14:20:21Z

enclose the pipe capture in a separate thingamajig

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local p = {}

function p.main(frame)
-- Undo sanitization:
local code = frame.args[1] or ''
if code:match'nowiki' then
code = mw.text.unstripNoWiki(code)
else error("<nowiki> missing from first parameter") end

-- Angle brackets still remain santiized; unsanitize them
local wikitext = code:gsub('<', '<'):gsub('>', '>')

local secondParam = frame.args[2]
local start = tonumber(secondParam:match('%d+')) -- Extract the first number from the second parameter
local result = ''

assert(secondParam, "second parameter missing")

local function replaceTripleBraces(parameter, _, default, i) -- extract corresponding arguments from the parent function. the _ is necessary because the pipe still gets caught in the second capture group
if _ == "" then default = nil end -- mildly ugly hack for checking for {{{parameter|}}}
return frame:getParent().args[parameter:gsub("%d+", tostring(i))] or default or "{{{" .. parameter .. "}}}"
end

for i = start, math.huge do
-- Check if the parameter is defined
if not frame:getParent().args[secondParam:gsub('%d+', tostring(i))] then
break
end

local processed = wikitext:gsub("{{{([^{}<>|]+)(|?)([^{}|]*)}}}", function(a, b, c) return replaceTripleBraces(a, b, c, i) end) -- Find stuff of the form {{{parameter}}} or {{{parameter|default}}} via pattern matching
result = result .. processed
end

return frame:preprocess(result)
end

return p

Module:ArgRest - Revision history

Wikipedia>Lemondoge: enclose the pipe capture in a separate thingamajig