local util = {}

function util.search(modpath, exts={"can", "lua"})
	for _, ext in ipairs(exts) do
		for path in package.path:gmatch("[^;]+") do
			local fpath = path:gsub("%.lua", "."..ext):gsub("%?", (modpath:gsub("%.", "/")))
			local f = io.open(fpath)
			if f then
				f:close()
				return fpath
			end
		end
	end
end

function util.loadenv(str, name, env)
	if _VERSION == "Lua 5.1" then
		local fn, err = loadstring(str, name)
		if not fn then return fn, err end
		return env ~= nil and setfenv(fn, env) or fn
	else
		return load(str, name, nil, env)
	end
end

return util