From 201ac63c7692355b07b83034c1813c000ec70e84 Mon Sep 17 00:00:00 2001
From: Hisham Muhammad <hisham@gobolinux.org>
Date: Wed, 5 Feb 2020 15:18:14 +0100
Subject: fs.lua: fix error message when source file is missing

Fixes #1147.
---
 src/luarocks/fs/lua.lua | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/luarocks/fs/lua.lua b/src/luarocks/fs/lua.lua
index 6028a925..c5cebd2f 100644
--- a/src/luarocks/fs/lua.lua
+++ b/src/luarocks/fs/lua.lua
@@ -380,6 +380,20 @@ function fs_lua.remove_dir_tree_if_empty(d)
    end
 end
 
+local function are_the_same_file(f1, f2)
+   if f1 == f2 then
+      return true
+   end
+   if cfg.is_platform("unix") then
+      local i1 = lfs.attributes(f1, "ino")
+      local i2 = lfs.attributes(f2, "ino")
+      if i1 ~= nil and i1 == i2 then
+         return true
+      end
+   end
+   return false
+end
+
 --- Copy a file.
 -- @param src string: Pathname of source
 -- @param dest string: Pathname of destination
@@ -395,7 +409,7 @@ function fs_lua.copy(src, dest, perms)
    if destmode == "directory" then
       dest = dir.path(dest, dir.base_name(src))
    end
-   if src == dest or (cfg.is_platform("unix") and lfs.attributes(src, "ino") == lfs.attributes(dest, "ino")) then
+   if are_the_same_file(src, dest) then
       return nil, "The source and destination are the same files"
    end
    local src_h, err = io.open(src, "rb")
-- 
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