Keep only base/extractor.[cc|h].

base/disk.h

-// Copyright 2004-2009 Google Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-// ========================================================================
-//
-// Disk functions
-
-#ifndef OMAHA_COMMON_DISK_H__
-#define OMAHA_COMMON_DISK_H__
-
-#include <atlstr.h>
-#include "base/basictypes.h"
-
-namespace omaha {
-
-// A constant we use to determine a large drive.
-// Although today this isn't really really large,
-// it is enough to distinguish small, removable
-// drives that are not continually connected to
-// a computer, from the drives that are.
-// In addition to using this constant, we
-// also check if the drive is hot-pluggable.
-const uint64 kLargeDriveSize = 0x00000000ffffffff;
-
-// returns true if the device is an external disk
-// drive typically is something like: \\?\C:
-bool IsDiskExternal(const TCHAR *drive);
-
-//
-// Determines if a drive can be unplugged without manually disabling
-// the drive first.  By default, USB drives are initialized with
-// "surprise removal" enabled, which means they are hot-pluggable.
-//
-// @param drive  The root of the drive, as returned from GetLogicalDriveStrings
-//               e.g. "E:\\".
-//
-// @returns true if the drive is optimized for quick/surprise removal.
-//   If the function returns false, then caching (lazy write) is enabled for
-//   the drive, otherwise it is not.
-//   If an error occurs during this call, the return value will be 'true' since
-//   we always want to treat a drive as hot-pluggable if we're not sure.
-//
-bool IsHotPluggable(const TCHAR* drive);
-
-//
-// @returns true if the specified drive is larger than kLargeDriveSize.
-//
-// @param drive  The root of the drive, as returned from GetLogicalDriveStrings
-//               e.g. "E:\\".
-//
-bool IsLargeDrive(const TCHAR* drive);
-
-// find the first fixed local disk with at least the space requested
-// returns the drive in the drive parameter
-// returns E_FAIL if no drive with enough space could be found
-HRESULT FindFirstLocalDriveWithEnoughSpace(const uint64 space_required,
-                                           CString *drive);
-
-// Get free disk space of a drive containing the specified folder
-HRESULT GetFreeDiskSpace(uint32 csidl, uint64* free_disk_space);
-
-// Get free disk space of a drive containing the specified folder
-HRESULT GetFreeDiskSpace(const TCHAR* folder, uint64* free_disk_space);
-
-// Has enough free disk space on a drive containing the specified folder
-HRESULT HasEnoughFreeDiskSpace(uint32 csidl, uint64 disk_space_needed);
-
-// Has enough free disk space on a drive containing the specified folder
-HRESULT HasEnoughFreeDiskSpace(const TCHAR* folder, uint64 disk_space_needed);
-
-// Convert from "\Device\Harddisk0\Partition1\WINNT\System32\ntdll.dll" to
-// "C:\WINNT\System32\ntdll.dll"
-HRESULT DevicePathToDosPath(const TCHAR* device_path, CString* dos_path);
-
-//
-// Disables critical error dialogs on the current thread.
-// The system does not display the critical-error-handler message box.
-// Instead, the system returns the error to the calling process.
-//
-class DisableThreadErrorUI {
- public:
-  DisableThreadErrorUI() {
-    // Set the error mode
-    prev_mode_ = SetErrorMode(SEM_FAILCRITICALERRORS);
-  }
-
-  ~DisableThreadErrorUI() {
-    // Restore the error mode
-    SetErrorMode(prev_mode_);
-  }
-
- protected:
-  UINT prev_mode_;
-};
-
-}  // namespace omaha
-
-#endif  // OMAHA_COMMON_DISK_H__
-