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 NET_BASE_PLATFORM_MIME_UTIL_H_
6#define NET_BASE_PLATFORM_MIME_UTIL_H_
7
8#include <string>
9
10#include "base/containers/hash_tables.h"
11#include "base/files/file_path.h"
12
13namespace net {
14
15// Encapsulates the platform-specific functionality in mime_util.
16class PlatformMimeUtil {
17 public:
18  // See documentation for base::GetPreferredExtensionForMimeType [mime_util.h]
19  bool GetPreferredExtensionForMimeType(
20      const std::string& mime_type,
21      base::FilePath::StringType* extension) const;
22
23  // Adds all the extensions that the platform associates with the type
24  // |mime_type| to the set |extensions|.  Returns at least the value returned
25  // by GetPreferredExtensionForMimeType.
26  void GetPlatformExtensionsForMimeType(
27      const std::string& mime_type,
28      base::hash_set<base::FilePath::StringType>* extensions) const;
29
30 protected:
31  // Get the mime type (if any) that is associated with the file extension.
32  // Returns true if a corresponding mime type exists.
33  bool GetPlatformMimeTypeFromExtension(const base::FilePath::StringType& ext,
34                                        std::string* mime_type) const;
35};
36
37}  // namespace net
38
39#endif  // NET_BASE_PLATFORM_MIME_UTIL_H_
40