Initial community commit

Src/external_dependencies/openmpt-trunk/mptrack/LinkResolver.cpp

@@ -0,0 +1,62 @@
+/*
+ * LinkResolver.cpp
+ * ----------------
+ * Purpose: Resolve Windows shell link targets
+ * Notes  : (currently none)
+ * Authors: OpenMPT Devs
+ * The OpenMPT source code is released under the BSD license. Read LICENSE for more details.
+ */
+
+
+#include "stdafx.h"
+#include "LinkResolver.h"
+
+#include <atlconv.h>
+
+OPENMPT_NAMESPACE_BEGIN
+
+LinkResolver::LinkResolver()
+{
+	HRESULT result = CoCreateInstance(CLSID_ShellLink,
+	                                  0,
+	                                  CLSCTX_INPROC_SERVER,
+	                                  IID_IShellLink,
+	                                  reinterpret_cast<LPVOID *>(&psl));
+	if(SUCCEEDED(result) && psl != nullptr)
+	{
+		psl->QueryInterface(IID_IPersistFile, reinterpret_cast<LPVOID *>(&ppf));
+	}
+}
+
+LinkResolver::~LinkResolver()
+{
+	if(ppf != nullptr)
+		ppf->Release();
+	if(psl != nullptr)
+		psl->Release();
+}
+
+mpt::PathString LinkResolver::Resolve(const TCHAR *inPath)
+{
+	if(ppf == nullptr)
+		return {};
+
+	SHFILEINFO info;
+	Clear(info);
+	if((SHGetFileInfo(inPath, 0, &info, sizeof(info), SHGFI_ATTRIBUTES) == 0) || !(info.dwAttributes & SFGAO_LINK))
+		return {};
+
+	USES_CONVERSION;  // T2COLE needs this
+	if(ppf != nullptr && SUCCEEDED(ppf->Load(T2COLE(inPath), STGM_READ)))
+	{
+		if(SUCCEEDED(psl->Resolve(AfxGetMainWnd()->m_hWnd, MAKELONG(SLR_ANY_MATCH | SLR_NO_UI | SLR_NOSEARCH, 100))))
+		{
+			TCHAR outPath[MAX_PATH];
+			psl->GetPath(outPath, mpt::saturate_cast<int>(std::size(outPath)), nullptr, 0);
+			return mpt::PathString::FromNative(outPath);
+		}
+	}
+	return {};
+}
+
+OPENMPT_NAMESPACE_END