Added "isDirectory" method to llvm::sys::Path.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45168 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/System/Unix/Path.inc b/lib/System/Unix/Path.inc
index e4916ba..9e90dda 100644
--- a/lib/System/Unix/Path.inc
+++ b/lib/System/Unix/Path.inc
@@ -289,6 +289,14 @@
 }
 
 bool
+Path::isDirectory() const {
+  struct stat buf;
+  if (0 != stat(path.c_str(), &buf))
+    return false;
+  return buf.st_mode & S_IFDIR ? true : false;
+}
+
+bool
 Path::canRead() const {
   return 0 == access(path.c_str(), F_OK | R_OK );
 }