From 9fb368af903d80436ce5a018d56d33b49890ce53 Mon Sep 17 00:00:00 2001
From: masx200 <34191203+masx200@users.noreply.github.com>
Date: Mon, 15 May 2023 18:10:33 +0800
Subject: [PATCH] Update install.lua

---
 install.lua | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/install.lua b/install.lua
index e7b30bc1..b63aa3d7 100644
--- a/install.lua
+++ b/install.lua
@@ -25,12 +25,32 @@ local function movefilesinfolder(src, dest, callback)
     end
 
 end
+
+local function checkfilesexists(archivefile)
+    if os.exists(archivefile .. '.list') then
+        local installedlistfile = io.open(archivefile .. '.list', "r")
+        if nil == installedlistfile then
+            print("open file: " .. archivefile .. '.list' .. " fail")
+            return
+        end
+        while (true) do
+            local content2 = installedlistfile:read("*l")
+
+            if content2 == nil then return true end
+
+            if not os.exists(content2) then return false end
+
+        end
+    end
+    return false
+end
 function main()
 
     local name = "leetcode-treenode-cpp"
     local version = "1.1.8"
     local folder = name .. "-" .. version
     local archivefile = path.join('downloads', folder .. '.tar.gz')
+    if checkfilesexists(archivefile) then return end
     if not os.exists(archivefile) then
         local url = 'https://ghproxy.com/https://github.com/masx200/' .. name ..
                         '/archive/' .. version .. '.tar.gz'