From bd7da4f5a06fd9f417d9963d9fcbb074a6176ba2 Mon Sep 17 00:00:00 2001
From: Hisham Muhammad <hisham@gobolinux.org>
Date: Sun, 24 Jun 2018 19:22:10 -0300
Subject: fs.lua: add a LuaPosix-independent version of make_temp_dir

This version can run on Windows using lfs alone.
---
 src/luarocks/fs/lua.lua | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/luarocks/fs/lua.lua b/src/luarocks/fs/lua.lua
index 8640b01a..37e1bffc 100644
--- a/src/luarocks/fs/lua.lua
+++ b/src/luarocks/fs/lua.lua
@@ -839,6 +839,24 @@ end
 -- Other functions
 ---------------------------------------------------------------------
 
+if lfs_ok and not fs_lua.make_temp_dir then
+
+function fs_lua.make_temp_dir(name_pattern)
+   assert(type(name_pattern) == "string")
+   name_pattern = dir.normalize(name_pattern)
+
+   local pattern = (os.getenv("TMPDIR") or os.getenv("TEMP") or "/tmp") .. "/luarocks_" .. name_pattern:gsub("/", "_") .. "-"
+
+   while true do
+      local name = pattern .. tostring(math.random(10000000))
+      if lfs.mkdir(name) then
+         return name
+      end
+   end
+end
+
+end
+
 --- Apply a patch.
 -- @param patchname string: The filename of the patch.
 -- @param patchdata string or nil: The actual patch as a string.
-- 
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