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/*
* Copyright 2019-2021 Diligent Graphics LLC
* Copyright 2015-2019 Egor Yusov
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* In no event and under no legal theory, whether in tort (including negligence),
* contract, or otherwise, unless required by applicable law (such as deliberate
* and grossly negligent acts) or agreed to in writing, shall any Contributor be
* liable for any damages, including any direct, indirect, special, incidental,
* or consequential damages of any character arising as a result of this License or
* out of the use or inability to use the software (including but not limited to damages
* for loss of goodwill, work stoppage, computer failure or malfunction, or any and
* all other commercial damages or losses), even if such Contributor has been advised
* of the possibility of such damages.
*/
#pragma once
#include "../../Primitives/interface/Errors.hpp"
#include "../../Platforms/Basic/interface/DebugUtilities.hpp"
#include "../../Platforms/interface/FileSystem.hpp"
namespace Diligent
{
class FileWrapper
{
public:
FileWrapper() :
m_pFile{nullptr}
{}
FileWrapper(const Char* Path,
EFileAccessMode Access = EFileAccessMode::Read) :
m_pFile{nullptr}
{
FileOpenAttribs OpenAttribs(Path, Access);
Open(OpenAttribs);
}
~FileWrapper()
{
Close();
}
void Open(const FileOpenAttribs& OpenAttribs)
{
VERIFY(!m_pFile, "Another file already attached");
Close();
m_pFile = FileSystem::OpenFile(OpenAttribs);
}
CFile* Detach()
{
CFile* pFile = m_pFile;
m_pFile = NULL;
return pFile;
}
void Attach(CFile* pFile)
{
VERIFY(!m_pFile, "Another file already attached");
Close();
m_pFile = pFile;
}
void Close()
{
if (m_pFile)
FileSystem::ReleaseFile(m_pFile);
m_pFile = nullptr;
}
operator CFile*() { return m_pFile; }
CFile* operator->() { return m_pFile; }
private:
FileWrapper(const FileWrapper&);
const FileWrapper& operator=(const FileWrapper&);
CFile* m_pFile;
};
} // namespace Diligent
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