View source for Module:Call wikitext

require('strict')
local p = {}

function p.main(frame)
	local parent = frame:getParent()
	if parent and parent:getTitle():gsub('/sandbox$', '') == 'Template:Call wikitext' then
		-- Treat the "Template:Call wikitext" frame as the current frame
		frame = parent
	end

	local code = frame.args['sourceCode'] or error("sourceCode arg not provided")
	
	code = mw.text.unstripNoWiki(code) -- Undo nowiki sanitization
	code = code:gsub("&lt;", "<"):gsub("&gt;", ">") -- Unsanitize < and >
	
	-- Remove sourceCode from the arguments
	local newArgs = {}
	for k, v in pairs(frame.args) do
		if k ~= 'sourceCode' then
			newArgs[k] = v
		end
	end
	
	-- Create a new frame without "sourceCode"
	local newFrame = frame:newChild{
		title = "Called wikitext",
		args = newArgs
	}

    return newFrame:preprocess(code)
end

return p