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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 "multioutputstream.h"
#include "compat.h"
#ifdef _WIN32
#include <fcntl.h>
#include <io.h>
#endif
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);
}
//////////////////////////
// MultiOutputStream
MultiOutputStream::MultiOutputStream(WriteCallback callback) : m_WriteCallback(callback)
{}
MultiOutputStream::~MultiOutputStream() {}
HRESULT MultiOutputStream::Close()
{
for (auto& file : m_Files) {
file.Close();
}
return S_OK;
}
bool MultiOutputStream::Open(std::vector<std::filesystem::path> const& filepaths)
{
m_ProcessedSize = 0;
bool ok = true;
m_Files.clear();
for (auto& path : filepaths) {
m_Files.emplace_back();
if (!m_Files.back().Open(path)) {
ok = false;
}
}
return ok;
}
STDMETHODIMP MultiOutputStream::Write(const void* data, UInt32 size,
UInt32* processedSize) throw()
{
bool update_processed(true);
for (auto& file : m_Files) {
UInt32 realProcessedSize;
if (!file.Write(data, size, realProcessedSize)) {
return ConvertBoolToHRESULT(false);
}
if (update_processed) {
m_ProcessedSize += realProcessedSize;
if (m_WriteCallback) {
m_WriteCallback(realProcessedSize, m_ProcessedSize);
}
update_processed = false;
}
if (processedSize != nullptr) {
*processedSize = realProcessedSize;
}
}
return S_OK;
}
STDMETHODIMP MultiOutputStream::Seek(Int64 offset, UInt32 seekOrigin,
UInt64* newPosition) throw()
{
if (seekOrigin >= 3)
return STG_E_INVALIDFUNCTION;
bool result = true;
for (auto& file : m_Files) {
UInt64 realNewPosition;
result = file.Seek(offset, seekOrigin, realNewPosition);
if (newPosition)
*newPosition = realNewPosition;
}
return ConvertBoolToHRESULT(result);
}
STDMETHODIMP MultiOutputStream::SetSize(UInt64 newSize) throw()
{
bool result = true;
for (auto& file : m_Files) {
UInt64 currentPos;
#ifdef _WIN32
if (!file.Seek(0, FILE_CURRENT, currentPos))
#else
if (!file.Seek(0, SEEK_CUR, currentPos))
#endif
return E_FAIL;
bool cresult = file.SetLength(newSize);
UInt64 currentPos2;
result = result && cresult && file.Seek(currentPos, currentPos2);
}
return result ? S_OK : E_FAIL;
}
HRESULT MultiOutputStream::GetSize(UInt64* size)
{
if (m_Files.empty()) {
return ConvertBoolToHRESULT(false);
}
return ConvertBoolToHRESULT(m_Files[0].GetLength(*size));
}
bool MultiOutputStream::SetMTime(FILETIME const* mTime)
{
for (auto& file : m_Files) {
file.SetMTime(mTime);
}
return true;
}
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