chrome/installer/util/self_cleaning_temp_dir.h

   1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_INSTALLER_UTIL_SELF_CLEANING_TEMP_DIR_H_
   6 #define CHROME_INSTALLER_UTIL_SELF_CLEANING_TEMP_DIR_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/files/file_path.h"
  10 #include "base/gtest_prod_util.h"
  11
  12 namespace installer {
  13
  14 // A helper class for managing a temporary directory.  In relation to
  15 // base::ScopedTempDir, this class additionally cleans up all non-empty parent
  16 // directories of the temporary directory that are created by an instance.
  17 class SelfCleaningTempDir {
  18  public:
  19   typedef base::FilePath::StringType StringType;
  20
  21   SelfCleaningTempDir();
  22
  23   // Performs a Delete().
  24   ~SelfCleaningTempDir();
  25
  26   // Creates a temporary directory named |temp_name| under |parent_dir|,
  27   // creating intermediate directories as needed.
  28   bool Initialize(const base::FilePath& parent_dir,
  29                   const StringType& temp_name);
  30
  31   // Returns the temporary directory created in Initialize().
  32   const base::FilePath& path() const { return temp_dir_; }
  33
  34   // Deletes the temporary directory created in Initialize() and all of its
  35   // contents, as well as all empty intermediate directories.  Any of these that
  36   // cannot be deleted immediately are scheduled for deletion upon reboot.
  37   bool Delete();
  38
  39  private:
  40   static void GetTopDirToCreate(const base::FilePath& temp_parent_dir,
  41                                 base::FilePath* base_dir);
  42
  43   // The topmost directory created.
  44   base::FilePath base_dir_;
  45
  46   // The temporary directory.
  47   base::FilePath temp_dir_;
  48
  49   FRIEND_TEST_ALL_PREFIXES(SelfCleaningTempDirTest, TopLevel);
  50   FRIEND_TEST_ALL_PREFIXES(SelfCleaningTempDirTest, TopLevelPlusOne);
  51   DISALLOW_COPY_AND_ASSIGN(SelfCleaningTempDir);
  52 };
  53
  54 }  // namespace installer
  55
  56 #endif  // CHROME_INSTALLER_UTIL_SELF_CLEANING_TEMP_DIR_H_