Home | History | Annotate | Download | only in files
      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 BASE_FILES_DIR_READER_FALLBACK_H_
      6 #define BASE_FILES_DIR_READER_FALLBACK_H_
      7 
      8 namespace base {
      9 
     10 class DirReaderFallback {
     11  public:
     12   // Open a directory. If |IsValid| is true, then |Next| can be called to start
     13   // the iteration at the beginning of the directory.
     14   explicit DirReaderFallback(const char* directory_path) {}
     15 
     16   // After construction, IsValid returns true iff the directory was
     17   // successfully opened.
     18   bool IsValid() const { return false; }
     19 
     20   // Move to the next entry returning false if the iteration is complete.
     21   bool Next() { return false; }
     22 
     23   // Return the name of the current directory entry.
     24   const char* name() { return 0;}
     25 
     26   // Return the file descriptor which is being used.
     27   int fd() const { return -1; }
     28 
     29   // Returns true if this is a no-op fallback class (for testing).
     30   static bool IsFallback() { return true; }
     31 };
     32 
     33 }  // namespace base
     34 
     35 #endif  // BASE_FILES_DIR_READER_FALLBACK_H_
     36