Module:Tmpl: Difference between revisions

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--- This is a helper module for {{tmpl}}
+-- This is a helper module for Template:tmpl
-require('strict')
--- The trailing `[^0-9]?` ensures that `$10` doesn't potentially change
--- from being treated as `${1}0` to being treated as `${10}`
--- if the number of supported parameters is ever expanded:
-local PATTERN = "%$([1-9])[^0-9]?"
 local this = {}
 function this.renderTmpl(frame)
-	local args = frame.args
+    local args = frame.args
-	local pargs = (frame:getParent() or {}).args
+    local pargs = (frame:getParent() or {}).args
-	local input = pargs[0] or ''
+    local result = pargs[0] or ''
+    for k, v in pairs(pargs) do
-	local result = {}
+        local n = tonumber(k) or -1
+        if (n >= 1 and n <= 9) then
-	local prevPos = 1
+            result = mw.ustring.gsub( result, '$' .. n, mw.text.trim(v) )
-	do
+        end
-		local startPos, _, k
+    end
-		while true do
+    return result
-			startPos, _, k = string.find(input, PATTERN, prevPos)
-			if (not startPos) then break end
-			table.insert(result, string.sub(input, prevPos, startPos - 1))
-			local n = tonumber(k)
-			local r = pargs[n]
-			if (r) then
-				table.insert(result, r)
-			else
-				table.insert(result, '$' .. n)
-			end
-			prevPos = startPos + #k + 1
-		end
-	end
-	table.insert(result, string.sub(input, prevPos))
-	return table.concat(result)
 end

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