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Module:Sandbox/Ahecht/interwiki

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local p = {}

function p._current()
	out = {}
	for k, v in pairs(mw.site.interwikiMap("local")) do
		if v.isCurrentWiki then
			table.insert(out, k)
		end
	end
	return out
end

function p._map(isLocal)
	isLocal = isLocal and "local" or nil
	out = {}
	for k, v in pairs(mw.site.interwikiMap(isLocal)) do
		table.insert(out, k)
	end
	return out
end

function p._isCurrentIW(title)
	for _, v in ipairs(p._current()) do
		pattern = "^:?" .. v .. ":"
		if mw.ustring.match(title, pattern) then
			return true
		end
	end
	return false
end

function p._isValidIW(title, isLocal)
	for _, v in ipairs(p._map(isLocal)) do
		pattern = "^:?" .. v .. ":"
		if mw.ustring.match(title, pattern) then
			return true
		end
	end
	return false
end


local function current(args)
	return table.concat(p._current(), (args.sep or ", "))
end

local function map(args)
	return table.concat(p._map(args["local"]), (args.sep or ", "))
end

local function isCurrentIW(args)
	return p._isCurrentIW((args[1] or ""))
end

local function ifCurrentIW(args)
	if p._isCurrentIW((args[1] or "")) then
		return args[2] or ""
	else
		return args[3] or ""
	end
end

local function isValidIW(args)
	return p._isValidIW((args[1] or ""), args["local"])
end

local function ifValidIW(args)
	if p._isValidIW((args[1] or ""), args["local"]) then
		return args[2] or ""
	else
		return args[3] or ""
	end
end

local function makeWrapper(func)
    return function (frame)
        -- If called via #invoke, use the args passed into the invoking template.
        -- Otherwise, for testing purposes, assume args are being passed directly in.
        local origArgs
        if frame == mw.getCurrentFrame() then
            origArgs = frame:getParent().args
            for k, v in pairs(frame.args) do
                origArgs = frame.args
                break
            end
        else
            origArgs = frame
        end
 
        -- Strip whitespace, and treat blank arguments as nil.
        -- 'sep' has different behaviour depending on whether
        -- it is blank or nil, so keep it as it is.
        -- isLocal needs to be converted from a string to a bool.
        local args = {}
        for k, v in pairs(origArgs) do
            v = mw.text.trim(v)
            if v ~= '' or k == 'sep' then
                if k == 'local' then
                	t = {["true"]=true,["false"]=false}
                	args[k] = (t[v] or v==true)
                else
                	args[k] = v
                end
            end
        end
    
        return func(args)
    end
end

return {
    current = makeWrapper(current),
    map = makeWrapper(map),
    isCurrentIW = makeWrapper(isCurrentIW),
    ifCurrentIW = makeWrapper(ifCurrentIW),
    isValidIW = makeWrapper(isValidIW),
    ifValidIW = makeWrapper(ifValidIW)
}
Retrieved from "https://en.wikipedia.org/w/index.php?title=Module:Sandbox/Ahecht/interwiki&oldid=1064499335"