improve path.directory

1 files changed, 19 insertions, 0 deletions

diff --git a/xmake/core/base/path.lua b/xmake/core/base/path.lua
index 49850c42b..8860b2af9 100644
--- a/xmake/core/base/path.lua
+++ b/xmake/core/base/path.lua
@@ -38,6 +38,25 @@ function path.normalize(p)
     return path.translate(p, {normalize = true})
 end
 
+-- get the directory of the path, compatible with lower version core binary
+if not path.directory then
+    function path.directory(p, sep)
+        local i =  0
+        if sep then
+            -- if the path has been normalized, we can quickly find it with a unique path separator prompt
+            i = p:lastof(sep, true) or 0
+        else
+            i = math.max(p:lastof('/', true) or 0, p:lastof('\\', true) or 0)
+        end
+        if i > 0 then
+            if i > 1 then i = i - 1 end
+            return p:sub(1, i)
+        else
+            return "."
+        end
+    end
+end
+
 -- get the filename of the path
 function path.filename(p, sep)
     local i =  0