dir_reader_fallback.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

// Copyright (c) 2010 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 BASE_DIR_READER_FALLBACK_H_

#define BASE_DIR_READER_FALLBACK_H_

#pragma once

namespace base {

class DirReaderFallback {

 public:

  // Open a directory. If |IsValid| is true, then |Next| can be called to start

  // the iteration at the beginning of the directory.

  explicit DirReaderFallback(const char* directory_path) {}

  // After construction, IsValid returns true iff the directory was

  // successfully opened.

  bool IsValid() const { return false; }

  // Move to the next entry returning false if the iteration is complete.

  bool Next() { return false; }

  // Return the name of the current directory entry.

  const char* name() { return 0; }

  // Return the file descriptor which is being used.

  int fd() const { return -1; }

  // Returns true if this is a no-op fallback class (for testing).

  static bool IsFallback() { return true; }

};

}  // namespace base

#endif  // BASE_DIR_READER_FALLBACK_H_