dir_reader_fallback.h (1214B)
1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ 2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */ 3 // Copyright (c) 2010 The Chromium Authors. All rights reserved. 4 // Use of this source code is governed by a BSD-style license that can be 5 // found in the LICENSE file. 6 7 #ifndef BASE_DIR_READER_FALLBACK_H_ 8 #define BASE_DIR_READER_FALLBACK_H_ 9 #pragma once 10 11 namespace base { 12 13 class DirReaderFallback { 14 public: 15 // Open a directory. If |IsValid| is true, then |Next| can be called to start 16 // the iteration at the beginning of the directory. 17 explicit DirReaderFallback(const char* directory_path) {} 18 // After construction, IsValid returns true iff the directory was 19 // successfully opened. 20 bool IsValid() const { return false; } 21 // Move to the next entry returning false if the iteration is complete. 22 bool Next() { return false; } 23 // Return the name of the current directory entry. 24 const char* name() { return 0; } 25 // Return the file descriptor which is being used. 26 int fd() const { return -1; } 27 // Returns true if this is a no-op fallback class (for testing). 28 static bool IsFallback() { return true; } 29 }; 30 31 } // namespace base 32 33 #endif // BASE_DIR_READER_FALLBACK_H_