[Refactor] to rename and re-layer the file_util stack layers.

webkit/fileapi/obfuscated_file_system_file_util.h

Index: webkit/fileapi/obfuscated_file_system_file_util.h
diff --git a/webkit/fileapi/obfuscated_file_system_file_util.h b/webkit/fileapi/obfuscated_file_system_file_util.h
deleted file mode 100644
index 782fc07f7abc09cb200595672260f12317ec6fae..0000000000000000000000000000000000000000
--- a/webkit/fileapi/obfuscated_file_system_file_util.h
+++ /dev/null
@@ -1,264 +0,0 @@
-// Copyright (c) 2011 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 WEBKIT_FILEAPI_OBFUSCATED_FILE_SYSTEM_FILE_UTIL_H_
-#define WEBKIT_FILEAPI_OBFUSCATED_FILE_SYSTEM_FILE_UTIL_H_
-
-#include <map>
-#include <string>
-#include <vector>
-
-#include "base/file_path.h"
-#include "base/file_util_proxy.h"
-#include "base/memory/ref_counted.h"
-#include "base/platform_file.h"
-#include "base/timer.h"
-#include "webkit/fileapi/file_system_directory_database.h"
-#include "webkit/fileapi/file_system_file_util.h"
-#include "webkit/fileapi/file_system_origin_database.h"
-#include "webkit/fileapi/file_system_types.h"
-
-namespace base {
-struct PlatformFileInfo;
-class Time;
-}
-
-class GURL;
-
-namespace fileapi {
-
-class FileSystemOperationContext;
-
-// The overall implementation philosophy of this class is that partial failures
-// should leave us with an intact database; we'd prefer to leak the occasional
-// backing file than have a database entry whose backing file is missing.  When
-// doing FSCK operations, if you find a loose backing file with no reference,
-// you may safely delete it.
-//
-// This class is RefCountedThreadSafe because it may gain a reference on the IO
-// thread, but must be deleted on the FILE thread because that's where
-// DropDatabases needs to be called.  References will be held by the
-// SandboxMountPointProvider [and the task it uses to drop the reference] and
-// SandboxMountPointProvider::GetFileSystemRootPathTask.  Without that last one,
-// we wouldn't need ref counting.
-//
-// TODO(ericu): We don't ever update directory mtimes; which operations should
-// do that?
-class ObfuscatedFileSystemFileUtil : public FileSystemFileUtil,
-    public base::RefCountedThreadSafe<ObfuscatedFileSystemFileUtil> {
- public:
-  // |underlying_file_util| is owned by the instance.  It will be deleted by
-  // the owner instance.  For example, it can be instanciated as follows:
-  // FileSystemFileUtil* file_system_file_util =
-  //     new ObfuscatedFileSystemFileUtil(new FileSystemFileUtil());
-  ObfuscatedFileSystemFileUtil(
-      const FilePath& file_system_directory,
-      FileSystemFileUtil* underlying_file_util);
-  virtual ~ObfuscatedFileSystemFileUtil();
-
-  virtual base::PlatformFileError CreateOrOpen(
-      FileSystemOperationContext* context,
-      const FilePath& file_path,
-      int file_flags,
-      base::PlatformFile* file_handle,
-      bool* created) OVERRIDE;
-
-  virtual base::PlatformFileError EnsureFileExists(
-      FileSystemOperationContext* context,
-      const FilePath& file_path, bool* created) OVERRIDE;
-
-  virtual base::PlatformFileError GetLocalFilePath(
-      FileSystemOperationContext* context,
-      const FilePath& virtual_file,
-      FilePath* local_path) OVERRIDE;
-
-  virtual base::PlatformFileError GetFileInfo(
-      FileSystemOperationContext* context,
-      const FilePath& file,
-      base::PlatformFileInfo* file_info,
-      FilePath* platform_file) OVERRIDE;
-
-  virtual base::PlatformFileError ReadDirectory(
-      FileSystemOperationContext* context,
-      const FilePath& file_path,
-      std::vector<base::FileUtilProxy::Entry>* entries) OVERRIDE;
-
-  virtual base::PlatformFileError CreateDirectory(
-      FileSystemOperationContext* context,
-      const FilePath& file_path,
-      bool exclusive,
-      bool recursive) OVERRIDE;
-
-  virtual base::PlatformFileError CopyOrMoveFile(
-      FileSystemOperationContext* context,
-      const FilePath& src_file_path,
-      const FilePath& dest_file_path,
-      bool copy) OVERRIDE;
-
-  virtual PlatformFileError CopyInForeignFile(
-        FileSystemOperationContext* context,
-        const FilePath& src_file_path,
-        const FilePath& dest_file_path) OVERRIDE;
-
-  virtual base::PlatformFileError DeleteFile(
-      FileSystemOperationContext* context,
-      const FilePath& file_path) OVERRIDE;
-
-  virtual base::PlatformFileError DeleteSingleDirectory(
-      FileSystemOperationContext* context,
-      const FilePath& file_path) OVERRIDE;
-
-  virtual base::PlatformFileError Touch(
-      FileSystemOperationContext* context,
-      const FilePath& file_path,
-      const base::Time& last_access_time,
-      const base::Time& last_modified_time) OVERRIDE;
-
-  virtual base::PlatformFileError Truncate(
-      FileSystemOperationContext* context,
-      const FilePath& path,
-      int64 length) OVERRIDE;
-
-  virtual bool PathExists(
-      FileSystemOperationContext* context,
-      const FilePath& file_path) OVERRIDE;
-
-  virtual bool DirectoryExists(
-      FileSystemOperationContext* context,
-      const FilePath& file_path) OVERRIDE;
-
-  virtual bool IsDirectoryEmpty(
-      FileSystemOperationContext* context,
-      const FilePath& file_path) OVERRIDE;
-
-  // Gets the topmost directory specific to this origin and type.  This will
-  // contain both the directory database's files and all the backing file
-  // subdirectories.
-  FilePath GetDirectoryForOriginAndType(
-      const GURL& origin, FileSystemType type, bool create);
-
-  // Deletes the topmost directory specific to this origin and type.  This will
-  // delete its directory database.
-  bool DeleteDirectoryForOriginAndType(const GURL& origin, FileSystemType type);
-
-  // This will migrate a filesystem from the old passthrough sandbox into the
-  // new obfuscated one.  It won't obfuscate the old filenames [it will maintain
-  // the old structure, but move it to a new root], but any new files created
-  // will go into the new standard locations.  This will be completely
-  // transparent to the user.  This migration is atomic in that it won't alter
-  // the source data until it's done, and that will be with a single directory
-  // move [the directory with the unguessable name will move into the new
-  // filesystem storage directory].  However, if this fails partway through, it
-  // might leave a seemingly-valid database for this origin.  When it starts up,
-  // it will clear any such database, just in case.
-  bool MigrateFromOldSandbox(
-      const GURL& origin, FileSystemType type, const FilePath& root);
-
-  // TODO(ericu): This doesn't really feel like it belongs in this class.
-  // The previous version lives in FileSystemPathManager, but perhaps
-  // SandboxMountPointProvider would be better?
-  static FilePath::StringType GetDirectoryNameForType(FileSystemType type);
-
-  // Origin enumerator interface.
-  // An instance of this interface is assumed to be called on the file thread.
-  class AbstractOriginEnumerator {
-   public:
-    virtual ~AbstractOriginEnumerator() {}
-
-    // Returns the next origin.  Returns empty if there are no more origins.
-    virtual GURL Next() = 0;
-
-    // Returns the current origin's information.
-    virtual bool HasFileSystemType(FileSystemType type) const = 0;
-  };
-
-  // This method and all methods of its returned class must be called only on
-  // the FILE thread.  The caller is responsible for deleting the returned
-  // object.
-  AbstractOriginEnumerator* CreateOriginEnumerator();
-
-  virtual AbstractFileEnumerator* CreateFileEnumerator(
-      FileSystemOperationContext* context,
-      const FilePath& root_path) OVERRIDE;
-
-  // Deletes a directory database from the database list in the ObfuscatedFSFU
-  // and destroys the database on the disk.
-  bool DestroyDirectoryDatabase(const GURL& origin, FileSystemType type);
-
-  // Computes a cost for storing a given file in the obfuscated FSFU.
-  // As the cost of a file is independent of the cost of its parent directories,
-  // this ignores all but the BaseName of the supplied path.  In order to
-  // compute the cost of adding a multi-segment directory recursively, call this
-  // on each path segment and add the results.
-  static int64 ComputeFilePathCost(const FilePath& path);
-
- private:
-  typedef FileSystemDirectoryDatabase::FileId FileId;
-  typedef FileSystemDirectoryDatabase::FileInfo FileInfo;
-
-  base::PlatformFileError GetFileInfoInternal(
-      FileSystemDirectoryDatabase* db,
-      FileSystemOperationContext* context,
-      FileId file_id,
-      FileInfo* local_info,
-      base::PlatformFileInfo* file_info,
-      FilePath* platform_file_path);
-
-  // Creates a new file, both the underlying backing file and the entry in the
-  // database.  file_info is an in-out parameter.  Supply the name and
-  // parent_id; data_path is ignored.  On success, data_path will
-  // always be set to the relative path [from the root of the type-specific
-  // filesystem directory] of a NEW backing file, and handle, if supplied, will
-  // hold open PlatformFile for the backing file, which the caller is
-  // responsible for closing.  If you supply a path in source_path, it will be
-  // used as a source from which to COPY data.
-  // Caveat: do not supply handle if you're also supplying a data path.  It was
-  // easier not to support this, and no code has needed it so far, so it will
-  // DCHECK and handle will hold base::kInvalidPlatformFileValue.
-  base::PlatformFileError CreateFile(
-      FileSystemOperationContext* context,
-      const GURL& origin_url, FileSystemType type,
-      const FilePath& source_path, FileInfo* file_info,
-      int file_flags, base::PlatformFile* handle);
-  // Given the filesystem's root URL and a virtual path, produces a real, full
-  // local path to the underlying data file.  This does a database lookup, and
-  // verifies that the file exists.
-  FilePath GetLocalPath(
-      const GURL& origin_url,
-      FileSystemType type,
-      const FilePath& virtual_path);
-  // This converts from a relative path [as is stored in the FileInfo.data_path
-  // field] to an absolute local path that can be given to the operating system.
-  // It does no checks as to whether the file actually exists; it's pure path
-  // manipulation.
-  FilePath DataPathToLocalPath(
-      const GURL& origin, FileSystemType type, const FilePath& data_path);
-  // This does the reverse of DataPathToLocalPath.
-  FilePath LocalPathToDataPath(
-      const GURL& origin, FileSystemType type, const FilePath& local_path);
-  // This returns NULL if |create| flag is false and a filesystem does not
-  // exist for the given |origin_url| and |type|.
-  // For read operations |create| should be false.
-  FileSystemDirectoryDatabase* GetDirectoryDatabase(
-      const GURL& origin_url, FileSystemType type, bool create);
-  // Gets the topmost directory specific to this origin.  This will
-  // contain both the filesystem type subdirectories.
-  FilePath GetDirectoryForOrigin(const GURL& origin, bool create);
-  void MarkUsed();
-  void DropDatabases();
-  bool InitOriginDatabase(bool create);
-
-  typedef std::map<std::string, FileSystemDirectoryDatabase*> DirectoryMap;
-  DirectoryMap directories_;
-  scoped_ptr<FileSystemOriginDatabase> origin_database_;
-  FilePath file_system_directory_;
-  base::OneShotTimer<ObfuscatedFileSystemFileUtil> timer_;
-  scoped_ptr<FileSystemFileUtil> underlying_file_util_;
-
-  DISALLOW_COPY_AND_ASSIGN(ObfuscatedFileSystemFileUtil);
-};
-
-}  // namespace fileapi
-
-#endif  // WEBKIT_FILEAPI_OBFUSCATED_FILE_SYSTEM_FILE_UTIL_H_