box-server/nodes/web/lib/staticfile.lua

--[[
Descripttion:
version:
Author: Neo,Huang
Date: 2022-07-06 10:42:14
LastEditors: Neo,Huang
LastEditTime: 2022-07-06 10:49:07
--]]
local skynet = require "skynet"
local io = io
local root = skynet.getenv "static_path" or "../nodes/web/static/"

local cache = setmetatable({}, {__mode = "kv"})

local function cachefile(_, filename)
	local v = cache[filename]
	if v then
		return v[1]
	end
	local f = io.open(root .. filename)
	if f then
		local content = f:read "a"
		f:close()
		cache[filename] = {content}
		return content
	else
		cache[filename] = {}
	end
end

local staticfile = setmetatable({}, {__index = cachefile})

return staticfile