Add ScopedTempDir - a class that manages the lifetime of a temporary director...

base/scoped_temp_dir.h

+// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef BASE_SCOPED_TEMP_DIR_H_
+#define BASE_SCOPED_TEMP_DIR_H_
+
+// An object representing a temporary / scratch directory that should be cleaned
+// up (recursively) when this object goes out of scope.  Note that since
+// deletion occurs during the destructor, no further error handling is possible
+// if the directory fails to be deleted.  As a result, deletion is not
+// guaranteed by this class.
+
+#include "base/file_path.h"
+
+class ScopedTempDir {
+ public:
+  // No directory is owned/created initially.
+  ScopedTempDir();
+
+  // Recursively delete path_
+  ~ScopedTempDir();
+
+  // Creates a unique directory in TempPath, and takes ownership of it.
+  // See file_util::CreateNewTemporaryDirectory.
+  bool CreateUniqueTempDir();
+
+  // Takes ownership of directory at |path|, creating it if necessary.
+  // Don't call multiple times unless Take() has been called first.
+  bool Set(const FilePath& path);
+
+  // Caller takes ownership of the temporary directory so it won't be destroyed
+  // when this object goes out of scope.
+  FilePath Take();
+
+  const FilePath& path() const { return path_; }
+
+  // Returns true if path_ is non-empty and exists.
+  bool IsValid() const;
+
+ private:
+  FilePath path_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScopedTempDir);
+};
+
+#endif  // BASE_SCOPED_TEMP_DIR_H_