storage/browser/fileapi/native_file_util.h

   1 // Copyright (c) 2012 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 STORAGE_BROWSER_FILEAPI_NATIVE_FILE_UTIL_H_
   6 #define STORAGE_BROWSER_FILEAPI_NATIVE_FILE_UTIL_H_
   7
   8 #include "base/files/file.h"
   9 #include "base/files/file_path.h"
  10 #include "base/files/file_util_proxy.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "storage/browser/fileapi/file_system_file_util.h"
  13 #include "storage/browser/storage_browser_export.h"
  14
  15 namespace base {
  16 class Time;
  17 }
  18
  19 namespace storage {
  20
  21 // A thin wrapper class for accessing the OS native filesystem.
  22 // This performs common error checks necessary to implement FileUtil family
  23 // in addition to perform native filesystem operations.
  24 //
  25 // For the error checks it performs please see the comment for
  26 // FileSystemFileUtil interface
  27 // (storage/browser/fileapi/file_system_file_util.h).
  28 //
  29 // Note that all the methods of this class are static and this does NOT
  30 // inherit from FileSystemFileUtil.
  31 class STORAGE_EXPORT_PRIVATE NativeFileUtil {
  32  public:
  33   enum CopyOrMoveMode {
  34     COPY_NOSYNC,
  35     COPY_SYNC,
  36     MOVE
  37   };
  38   static CopyOrMoveMode CopyOrMoveModeForDestination(
  39       const FileSystemURL& dest_url, bool copy);
  40
  41   static base::File CreateOrOpen(const base::FilePath& path, int file_flags);
  42   static base::File::Error EnsureFileExists(const base::FilePath& path,
  43                                             bool* created);
  44   static base::File::Error CreateDirectory(const base::FilePath& path,
  45                                            bool exclusive,
  46                                            bool recursive);
  47   static base::File::Error GetFileInfo(const base::FilePath& path,
  48                                        base::File::Info* file_info);
  49   static scoped_ptr<FileSystemFileUtil::AbstractFileEnumerator>
  50       CreateFileEnumerator(const base::FilePath& root_path,
  51                            bool recursive);
  52   static base::File::Error Touch(const base::FilePath& path,
  53                                  const base::Time& last_access_time,
  54                                  const base::Time& last_modified_time);
  55   static base::File::Error Truncate(const base::FilePath& path,
  56                                     int64 length);
  57   static bool PathExists(const base::FilePath& path);
  58   static bool DirectoryExists(const base::FilePath& path);
  59   static base::File::Error CopyOrMoveFile(
  60       const base::FilePath& src_path,
  61       const base::FilePath& dest_path,
  62       FileSystemOperation::CopyOrMoveOption option,
  63       CopyOrMoveMode mode);
  64   static base::File::Error DeleteFile(const base::FilePath& path);
  65   static base::File::Error DeleteDirectory(const base::FilePath& path);
  66
  67  private:
  68   DISALLOW_IMPLICIT_CONSTRUCTORS(NativeFileUtil);
  69 };
  70
  71 }  // namespace storage
  72
  73 #endif  // STORAGE_BROWSER_FILEAPI_NATIVE_FILE_UTIL_H_