Module:Toolbar

local p = {} local args = {}

-- Create concatenator object. local Concatenator = {result = ''}

function Concatenator:new local o = {} setmetatable(o, self) self.__index = self return o end

function Concatenator:add(s) if type(s) ~= 'string' then error('Attempt to concatenate non-string value', 2) end self.result = self.result .. s end

-- Get the keys of the numerical arguments that are present. local function getArgNums local nums = {} for k, v in pairs(args) do       local num = tostring(k):match('^([1-9]%d*)$') if num then table.insert(nums, tonumber(num)) end end table.sort(nums) return nums end

local function makeToolbarItems -- Get numerical argument keys. local nums = getArgNums -- Get the separator text. local sep = (args.separator or 'pipe') .. '-separator' sep = mw.message.new(sep):plain -- Generate the toolbar items. local ti = Concatenator:new for i, v in ipairs(nums) do       ti:add(args[v]) if nums[i + 1] then ti:add(sep) end end return ti.result end

local function makeToolbar local class = args.class or '' local style = (args.style and ('style="' .. args.style .. '"')) or '' local t = Concatenator:new -- Generate opening span tag. t:add('') -- Generate toolbar items. t:add('(')   t:add(makeToolbarItems)    t:add(')') -- Generate closing span tag. t:add(' ') return t.result end

function p.main(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 else origArgs = frame end -- Strip whitespace and remove nil values for k, v in pairs(origArgs) do       v = mw.text.trim(v) if v ~= '' then args[k] = v       end end return makeToolbar end return p