UWPFileSystem.h

/*     Copyright 2015-2016 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
 * 
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF ANY PROPRIETARY RIGHTS.
 *
 *  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 "BasicFileSystem.h"
#include "DataBlob.h"
#include <memory>

// Do not include windows headers here as they will mess up CreateDirectory()
// and DeleteFile() functions!
//#define NOMINMAX
//#include <wrl.h>

class WindowsStoreFile : public BasicFile
{
public:
    WindowsStoreFile( const FileOpenAttribs &OpenAttribs );
    ~WindowsStoreFile();

    void Read( Diligent::IDataBlob *pData );

    bool Read( void *Data, size_t BufferSize );

    void Write( Diligent::IDataBlob *pData );
    bool Write( const void *Data, size_t BufferSize );

    size_t GetSize();

    size_t GetPos();

    void SetPos(size_t Offset, FilePosOrigin Origin);

private:
    // We have to do such tricks, because we cannot #include <wrl.h>
    // to avoid name clashes.
    std::unique_ptr<class FileHandleWrapper> m_FileHandle;
};

struct WindowsStoreFileSystem : public BasicFileSystem
{
public:
    static WindowsStoreFile* OpenFile( const FileOpenAttribs &OpenAttribs );
    static inline Diligent::Char GetSlashSymbol(){ return '\\'; }

    static bool FileExists( const Diligent::Char *strFilePath );
    static bool PathExists( const Diligent::Char *strPath );
    
    static bool CreateDirectory( const Diligent::Char *strPath );
    static void ClearDirectory( const Diligent::Char *strPath );
    static void DeleteFile( const Diligent::Char *strPath );
    static std::vector<std::unique_ptr<FindFileData>> Search(const Diligent::Char *SearchPattern);
};