Diligent Engine API Reference: D:/GitHub/DiligentEngine/DiligentCore/Common/interface/FileWrapper.h Source File

Diligent Engine API Reference

FileWrapper.h
1 /* Copyright 2015-2018 Egor Yusov
2 *
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
10 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
11 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF ANY PROPRIETARY RIGHTS.
12 *
13 * In no event and under no legal theory, whether in tort (including negligence),
14 * contract, or otherwise, unless required by applicable law (such as deliberate
15 * and grossly negligent acts) or agreed to in writing, shall any Contributor be
16 * liable for any damages, including any direct, indirect, special, incidental,
17 * or consequential damages of any character arising as a result of this License or
18 * out of the use or inability to use the software (including but not limited to damages
19 * for loss of goodwill, work stoppage, computer failure or malfunction, or any and
20 * all other commercial damages or losses), even if such Contributor has been advised
21 * of the possibility of such damages.
22 */
23
24 #pragma once
25
26 #include "FileSystem.h"
27 #include "Errors.h"
28 #include "DebugUtilities.h"
29
30 namespace Diligent
31 {
32
33 class FileWrapper
34 {
35 public:
36 FileWrapper( ) :
37 m_pFile(nullptr)
38 {}
39
40 FileWrapper( const Diligent::Char *Path,
41 EFileAccessMode Access = EFileAccessMode::Read) :
42 m_pFile( nullptr )
43 {
44 FileOpenAttribs OpenAttribs(Path, Access);
45 Open(OpenAttribs);
46 }
47
48 ~FileWrapper()
49 {
50 Close();
51 }
52
53 void Open(const FileOpenAttribs& OpenAttribs)
54 {
55 VERIFY( !m_pFile, "Another file already attached" );
56 Close();
57 m_pFile = FileSystem::OpenFile( OpenAttribs );
58 }
59
60 CFile *Detach()
61 {
62 CFile *pFile = m_pFile;
63 m_pFile = NULL;
64 return pFile;
65 }
66
67 void Attach(CFile *pFile)
68 {
69 VERIFY(!m_pFile, "Another file already attached");
70 Close();
71 m_pFile = pFile;
72 }
73
74 void Close()
75 {
76 if( m_pFile )
77 FileSystem::ReleaseFile(m_pFile);
78 m_pFile = nullptr;
79 }
80
81 operator CFile*(){return m_pFile;}
82 CFile* operator->(){return m_pFile;}
83
84 private:
85 FileWrapper(const FileWrapper&);
86 const FileWrapper& operator=(const FileWrapper&);
87
88 CFile *m_pFile;
89 };
90
91 }
Diligent
Namespace for the OpenGL implementation of the graphics engine.
Definition: BufferD3D11Impl.h:34