Garrysmod Cached Web Material

gistfile1.lua

local mats = {}
function GetWebMaterial( url, callback )
	local fileName = util.CRC(url)

	if mats[fileName] then
		return mats[fileName]
	end

	if file.Exists(  fileName .. ".txt", "DATA" ) then
		local mat = Material( "../data/" .. fileName .. ".txt\n.png" )
		mats[fileName] = mat
		
		callback(mat)
	else
		http.Fetch( url,
			function()
				file.Write( fileName .. ".txt", body )

				local mat = Material( "../data/" .. fileName .. ".txt\n.png" )
				mats[fileName] = mat
				
				callback(mat)
			end,
			function()end
		);
	end
end