Module:Sandbox/红石小蝈/LaTeX

模块文档  

local ret = {}
local function convert(tex, it)
	if (mw.ustring.sub(tex, it.it, it.it) ~= '{') then
		local res = mw.ustring.sub(tex, it.it, it.it)
		it.it = it.it + 1
		return res
	end
	it.it = it.it + 1
	local part = ""
	while(true) do
		local char = mw.ustring.sub(tex, it.it, it.it)
		it.it = it.it + 1
		if (char == '_') then
			part = part.."<sub>"..convert(tex, it).."</sub>"
		elseif (char == '^') then
			part = part.."<sup>"..convert(tex, it).."</sup>"
		elseif (char == '}') then
			return part
		else
			part = part..char
		end
	end
end

function ret.conv(frame)
	return convert('{'..frame.args[1]..'}',{it = 1})
end
return ret