112 lines
2.6 KiB
C++
112 lines
2.6 KiB
C++
// Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
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#if PLATFORM_WIN32
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#include "Win32File.h"
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#include "Engine/Core/Types/String.h"
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#include "Engine/Core/Log.h"
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#include "IncludeWindowsHeaders.h"
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Win32File::~Win32File()
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{
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Close();
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}
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Win32File* Win32File::Open(const StringView& path, FileMode mode, FileAccess access, FileShare share)
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{
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// Try to open the file
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// Note: FileMode, FileAccess and FileShare enums are mapping directly to the Win32 types
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#if PLATFORM_UWP
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CREATEFILE2_EXTENDED_PARAMETERS param = { 0 };
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param.dwSize = sizeof(CREATEFILE2_EXTENDED_PARAMETERS);
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param.dwFileAttributes = FILE_ATTRIBUTE_NORMAL;
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param.dwSecurityQosFlags = SECURITY_ANONYMOUS;
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auto handle = CreateFile2(*path, (DWORD)access, (DWORD)share, (DWORD)mode, ¶m);
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#else
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auto handle = CreateFileW(*path, (DWORD)access, (DWORD)share, nullptr, (DWORD)mode, FILE_ATTRIBUTE_NORMAL, nullptr);
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#endif
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if (handle == INVALID_HANDLE_VALUE)
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{
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LOG_WIN32_LAST_ERROR;
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return nullptr;
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}
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return New<Win32File>((void*)handle);
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}
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bool Win32File::Read(void* buffer, uint32 bytesToRead, uint32* bytesRead)
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{
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// Try to read data
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DWORD tmp;
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if (ReadFile(_handle, buffer, bytesToRead, &tmp, nullptr))
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{
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if (bytesRead)
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*bytesRead = tmp;
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return false;
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}
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if (bytesRead)
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*bytesRead = 0;
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return true;
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}
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bool Win32File::Write(const void* buffer, uint32 bytesToWrite, uint32* bytesWritten)
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{
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// Try to write data
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DWORD tmp;
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if (WriteFile(_handle, buffer, bytesToWrite, &tmp, nullptr))
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{
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if (bytesWritten)
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*bytesWritten = tmp;
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return false;
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}
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if (bytesWritten)
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*bytesWritten = 0;
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return true;
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}
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void Win32File::Close()
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{
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if (_handle)
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{
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CloseHandle(_handle);
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_handle = nullptr;
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}
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}
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uint32 Win32File::GetSize() const
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{
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LARGE_INTEGER result;
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GetFileSizeEx(_handle, &result);
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return (uint32)result.QuadPart;
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}
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DateTime Win32File::GetLastWriteTime() const
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{
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FILETIME lpLastWriteTime;
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GetFileTime(_handle, nullptr, nullptr, &lpLastWriteTime);
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SYSTEMTIME lpSystemTime;
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FileTimeToSystemTime(&lpLastWriteTime, &lpSystemTime);
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return DateTime(lpSystemTime.wYear, lpSystemTime.wMonth, lpSystemTime.wDay, lpSystemTime.wHour, lpSystemTime.wMinute, lpSystemTime.wSecond, lpSystemTime.wMilliseconds);
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}
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uint32 Win32File::GetPosition() const
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{
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return SetFilePointer(_handle, 0, nullptr, FILE_CURRENT);
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}
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void Win32File::SetPosition(uint32 seek)
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{
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SetFilePointer(_handle, seek, nullptr, FILE_BEGIN);
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}
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bool Win32File::IsOpened() const
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{
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return _handle != nullptr;
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}
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#endif
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