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/*
Mod Organizer archive handling
Copyright (C) 2012 Sebastian Herbord, 2020 MO2 Team. All rights reserved.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 3 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "inputstream.h"
#include "compat.h"
static inline HRESULT ConvertBoolToHRESULT(bool result)
{
if (result) {
return S_OK;
}
DWORD lastError = ::GetLastError();
if (lastError == 0) {
return E_FAIL;
}
return HRESULT_FROM_WIN32(lastError);
}
InputStream::InputStream() {}
InputStream::~InputStream() {}
bool InputStream::Open(std::filesystem::path const& filename)
{
return m_File.Open(filename);
}
STDMETHODIMP InputStream::Read(void* data, UInt32 size, UInt32* processedSize) throw()
{
UInt32 realProcessedSize;
bool result = m_File.Read(data, size, realProcessedSize);
if (processedSize != nullptr) {
*processedSize = realProcessedSize;
}
if (result) {
return S_OK;
}
return HRESULT_FROM_WIN32(::GetLastError());
}
STDMETHODIMP InputStream::Seek(Int64 offset, UInt32 seekOrigin, UInt64* newPosition) throw()
{
UInt64 realNewPosition = offset;
bool result = m_File.Seek(offset, seekOrigin, realNewPosition);
if (newPosition) {
*newPosition = realNewPosition;
}
return ConvertBoolToHRESULT(result);
}
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