Modul:0ugly hacks

local export = {}

function export.explode(frame)
	local wanted_index = tonumber(frame.args)
 
	local count = 1
	for item in mw.text.gsplit(frame.args, frame.args, true) do
		if count == wanted_index then
			return item
		end
		count = count + 1	
	end
	
	return ""
end

function export.substr(frame)
	return mw.ustring.sub(frame.args or "", tonumber(frame.args) or 1, tonumber(frame.args) or -1)
end

function export.find(frame)
	return mw.ustring.find(frame.args or "", frame.args or "", 1, true) or ""
end

function export.find_pattern(frame)
	return mw.ustring.find(frame.args or "", frame.args or "", 1, false) or ""
end

function export.replace(frame)
	return (mw.ustring.gsub(frame.args or "", frame.args or "", frame.args or ""))
end

function export.match(frame)
	return (mw.ustring.match(frame.args or "", frame.args or ""))
end

function export.escape_wiki(frame)
	return mw.text.nowiki(frame.args or "")
end

function export.escape_html(frame)
	return mw.text.encode(frame.args or "")
end

function export.zeropad(frame)
	if #frame.args >= tonumber(frame.args) then
		return frame.args	
	else
		return mw.ustring.sub(string.rep("0", frame.args) .. (frame.args or ""), -frame.args)
	end
end

function export.is_valid_page_name(frame)
	return mw.title.new(frame.args) and "valid" or ""
end

return setmetatable({ }, {
	__index = function(self, key)
		local m_debug = require('Module:0debug')
		local frame = mw.getCurrentFrame()
		local pframe = frame:getParent()
		local tname = pframe and pframe:getTitle()

		m_debug.track('ugly hacks/' .. key)
		if pframe then
			m_debug.track('ugly hacks/' .. key .. '/from ' .. tname)
		else
			mw.log(debug.traceback('ugly hacks: parent frame not available'))
		end
		return export	
	end
})