Module:Validation

local p = {};

function present(field, comp) return field ~= nil end

function absent(field, comp) return field == nil end

function equals(field, comp) return field ~= nil and field == comp end

function contains(field, comp) return field ~= nil and string.find(field, comp) ~= nil end

function check(field, comp, func, ret) if func(field, comp) then return ret .. " "   else return "" end end

function handleErrors(funcName, func, comp, checkRet) missingComp = ((funcName == "equals") or (funcName == "contains")) and (comp == nil) if (missingComp) or (func == nil) or (checkRet == nil) then error("Invalid args passed to validateFields. Check Module:Validation/doc for proper usage.", 0) end end

-- This function will insert text into an infobox based on the properties of a field. -- Currently, this function can only look at one field for a given text insertion, -- but it is possible to check multiple fields and insert text separately for each one. function p.validateFields(frame) functions = {["present"]=present, ["absent"]=absent, ["equals"]=equals, ["contains"]=contains} infoboxArgs = frame:getParent.args args = frame.args i = 1 ret = ""

while (args[i] ~= nil) do       inc = 3 field = infoboxArgs[args[i + 1]] comp = nil func = functions[args[i]] checkRet = args[i + 2]

if (args[i] == "equals") or (args[i] == "contains") then inc = 4 comp = args[i + 2] checkRet = args[i + 3] end

errRet, errMsg = pcall(handleErrors, args[i], func, comp, checkRet) if (not errRet) then return errMsg end

ret = ret .. check(field, comp, func, checkRet) i = i + inc end

return ret end

return p