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utils/vvis_launcher/vvis_launcher.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//=============================================================================//
+// vvis_launcher.cpp : Defines the entry point for the console application.
+//
+
+#include "stdafx.h"
+#include <direct.h>
+#include "tier1/strtools.h"
+#include "tier0/icommandline.h"
+#include "ilaunchabledll.h"
+
+
+
+char* GetLastErrorString()
+{
+	static char err[2048];
+	
+	LPVOID lpMsgBuf;
+	FormatMessage( 
+		FORMAT_MESSAGE_ALLOCATE_BUFFER | 
+		FORMAT_MESSAGE_FROM_SYSTEM | 
+		FORMAT_MESSAGE_IGNORE_INSERTS,
+		NULL,
+		GetLastError(),
+		MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), // Default language
+		(LPTSTR) &lpMsgBuf,
+		0,
+		NULL 
+	);
+
+	strncpy( err, (char*)lpMsgBuf, sizeof( err ) );
+	LocalFree( lpMsgBuf );
+
+	err[ sizeof( err ) - 1 ] = 0;
+
+	return err;
+}
+
+
+int main(int argc, char* argv[])
+{
+	CommandLine()->CreateCmdLine( argc, argv );
+	const char *pDLLName = "vvis_dll.dll";
+	
+	CSysModule *pModule = Sys_LoadModule( pDLLName );
+	if ( !pModule )
+	{
+		printf( "vvis launcher error: can't load %s\n%s", pDLLName, GetLastErrorString() );
+		return 1;
+	}
+
+	CreateInterfaceFn fn = Sys_GetFactory( pModule );
+	if( !fn )
+	{
+		printf( "vvis launcher error: can't get factory from %s\n", pDLLName );
+		Sys_UnloadModule( pModule );
+		return 2;
+	}
+
+	int retCode = 0;
+	ILaunchableDLL *pDLL = (ILaunchableDLL*)fn( LAUNCHABLE_DLL_INTERFACE_VERSION, &retCode );
+	if( !pDLL )
+	{
+		printf( "vvis launcher error: can't get IVVisDLL interface from %s\n", pDLLName );
+		Sys_UnloadModule( pModule );
+		return 3;
+	}
+
+	pDLL->main( argc, argv );
+	Sys_UnloadModule( pModule );
+
+	return 0;
+}
+