Method SaveFile

Src/HexMergeView.cpp:316–378

* @brief Save file */

 * @brief Save file
 */
HRESULT CHexMergeView::SaveFile(const tchar_t* path, bool packing)
{
	// Write data to an intermediate file
	String tempPath = env::GetTemporaryPath();
	String sIntermediateFilename = env::GetTemporaryFileName(tempPath, _T("MRG_"), 0);
	if (sIntermediateFilename.empty())
		return E_FAIL; //Nothing to do if even tempfile name fails
	HANDLE h = CreateFile(sIntermediateFilename.c_str(), GENERIC_WRITE, FILE_SHARE_READ,
		0, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
	HRESULT hr = SE(h != INVALID_HANDLE_VALUE);
	if (h == INVALID_HANDLE_VALUE)
		return hr;
	size_t length = GetLength();
	void *buffer = GetBuffer(length);
	if (buffer == 0)
	{
		CloseHandle(h);
		return E_POINTER;
	}
	size_t pos = 0;
	while (pos < length && SUCCEEDED(hr))
	{
		DWORD cb = 0;
		hr = SE(WriteFile(h, reinterpret_cast<const BYTE*>(buffer) + pos,
			length - pos < 0x10000000 ? static_cast<DWORD>(length - pos) : 0x10000000, &cb, 0));
		pos += cb;
	}
	CloseHandle(h);
	if (hr != S_OK)
		return hr;

	CHexMergeDoc* pDoc = static_cast<CHexMergeDoc*>(GetDocument());
	if (packing && !m_unpackerSubcodes.empty())
	{
		if (!pDoc->GetUnpacker()->Packing(m_nThisPane, sIntermediateFilename, path, m_unpackerSubcodes, { path }))
		{
			String str = CMergeApp::GetPackingErrorMessage(m_nThisPane, pDoc->m_nBuffers, path, *pDoc->GetUnpacker());
			int answer = AfxMessageBox(str.c_str(), MB_OKCANCEL | MB_ICONWARNING);
			if (answer == IDOK)
			{
				pDoc->SaveAs(m_nThisPane, false);
				return S_OK;
			}
			return S_OK;
		}
	}
	else
	{
		hr = SE(CopyFile(sIntermediateFilename.c_str(), path, FALSE));
		if (hr != S_OK)
			return hr;
	}

	m_fileInfo.Update(path);
	SetSavePoint();
	hr = SE(DeleteFile(sIntermediateFilename.c_str()));
	if (hr != S_OK)
	{