Add a convenience createUniqueDirectory function.

There are a few valid situation where we care about the structure inside a
directory, but not about the directory itself. A simple example is for unit
testing directory traversal.

PathV1 had a function like this, add one to V2 and port existing users of the
created temp file and delete it hack to using it.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185059 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 2 deletions

diff --git a/include/llvm/Support/FileSystem.h b/include/llvm/Support/FileSystem.h
index b72192753c..ac46117f27 100644
--- a/include/llvm/Support/FileSystem.h
+++ b/include/llvm/Support/FileSystem.h
@@ -568,11 +568,16 @@ error_code status_known(const Twine &path, bool &result);
 ///          otherwise a platform specific error_code.
 error_code unique_file(const Twine &model, int &result_fd,
                        SmallVectorImpl<char> &result_path,
-                       bool makeAbsolute = true, unsigned mode = owner_read | owner_write);
+                       bool makeAbsolute = true,
+                       unsigned mode = owner_read | owner_write);
 
 /// @brief Simpler version for clients that don't want an open file.
 error_code unique_file(const Twine &Model, SmallVectorImpl<char> &ResultPath,
-                       bool MakeAbsolute = true, unsigned Mode = owner_read | owner_write);
+                       bool MakeAbsolute = true,
+                       unsigned Mode = owner_read | owner_write);
+
+error_code createUniqueDirectory(const Twine &Prefix,
+                                 SmallVectorImpl<char> &ResultPath);
 
 /// @brief Canonicalize path.
 ///