Adds a modified copy of talk/base to webrtc/base. It is the first step in migrating talk/base to webrtc/base.

BUG=N/A
R=andrew@webrtc.org, wu@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/12199004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@6107 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/base/win32filesystem.h

@@ -0,0 +1,101 @@
+/*
+ *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef _WEBRTC_BASE_WIN32FILESYSTEM_H__
+#define _WEBRTC_BASE_WIN32FILESYSTEM_H__
+
+#include "fileutils.h"
+
+namespace rtc {
+
+class Win32Filesystem : public FilesystemInterface {
+ public:
+  // Opens a file. Returns an open StreamInterface if function succeeds. Otherwise,
+  // returns NULL.
+  virtual FileStream *OpenFile(const Pathname &filename, 
+                               const std::string &mode);
+
+  // Atomically creates an empty file accessible only to the current user if one
+  // does not already exist at the given path, otherwise fails.
+  virtual bool CreatePrivateFile(const Pathname &filename);
+
+  // This will attempt to delete the path located at filename.
+  // If the path points to a folder, it will fail with VERIFY
+  virtual bool DeleteFile(const Pathname &filename);
+
+  // This will attempt to delete an empty folder. If the path does not point to
+  // a folder, it fails with VERIFY. If the folder is not empty, it fails normally
+  virtual bool DeleteEmptyFolder(const Pathname &folder);
+
+  // Creates a directory. This will call itself recursively to create /foo/bar even if
+  // /foo does not exist.
+  // Returns TRUE if function succeeds
+  virtual bool CreateFolder(const Pathname &pathname);
+  
+  // This moves a file from old_path to new_path. If the new path is on a 
+  // different volume than the old, it will attempt to copy and then delete
+  // the folder
+  // Returns true if the file is successfully moved
+  virtual bool MoveFile(const Pathname &old_path, const Pathname &new_path);
+  
+  // Moves a folder from old_path to new_path. If the new path is on a different
+  // volume from the old, it will attempt to Copy and then Delete the folder
+  // Returns true if the folder is successfully moved
+  virtual bool MoveFolder(const Pathname &old_path, const Pathname &new_path);
+  
+  // This copies a file from old_path to _new_path
+  // Returns true if function succeeds
+  virtual bool CopyFile(const Pathname &old_path, const Pathname &new_path);
+
+  // Returns true if a pathname is a directory
+  virtual bool IsFolder(const Pathname& pathname);
+  
+  // Returns true if a file exists at path
+  virtual bool IsFile(const Pathname &path);
+
+  // Returns true if pathname refers to no filesystem object, every parent
+  // directory either exists, or is also absent.
+  virtual bool IsAbsent(const Pathname& pathname);
+
+  // Returns true if pathname represents a temporary location on the system.
+  virtual bool IsTemporaryPath(const Pathname& pathname);
+
+  // All of the following functions set pathname and return true if successful.
+  // Returned paths always include a trailing backslash.
+  // If create is true, the path will be recursively created.
+  // If append is non-NULL, it will be appended (and possibly created).
+
+  virtual std::string TempFilename(const Pathname &dir, const std::string &prefix);
+
+  virtual bool GetFileSize(const Pathname& path, size_t* size);
+  virtual bool GetFileTime(const Pathname& path, FileTimeType which,
+                           time_t* time);
+ 
+  // A folder appropriate for storing temporary files (Contents are
+  // automatically deleted when the program exists)
+  virtual bool GetTemporaryFolder(Pathname &path, bool create,
+                                 const std::string *append);
+
+  // Returns the path to the running application.
+  virtual bool GetAppPathname(Pathname* path);
+
+  virtual bool GetAppDataFolder(Pathname* path, bool per_user);
+
+  // Get a temporary folder that is unique to the current user and application.
+  virtual bool GetAppTempFolder(Pathname* path);
+
+  virtual bool GetDiskFreeSpace(const Pathname& path, int64 *freebytes);
+
+  virtual Pathname GetCurrentDirectory();
+};
+
+}  // namespace rtc
+
+#endif  // WEBRTC_WINFILESYSTEM_H__