Import from old repository

git-svn-id: https://unknownworlds.svn.cloudforge.com/ns1@1 67975925-1194-0748-b3d5-c16f83f1a3a1

main/source/common/interface.cpp

@@ -0,0 +1,144 @@
+
+#include <string.h>
+#include <stdlib.h>
+#include "interface.h"
+
+#ifndef _WIN32  // LINUX
+#include <dlfcn.h>
+#include <unistd.h> // getcwd
+#include <stdio.h> // sprintf
+#endif
+
+
+// ------------------------------------------------------------------------------------ //
+// InterfaceReg.
+// ------------------------------------------------------------------------------------ //
+InterfaceReg *InterfaceReg::s_pInterfaceRegs = NULL;
+
+
+InterfaceReg::InterfaceReg( InstantiateInterfaceFn fn, const char *pName ) :
+	m_pName(pName)
+{
+	m_CreateFn = fn;
+	m_pNext = s_pInterfaceRegs;
+	s_pInterfaceRegs = this;
+}
+
+
+
+// ------------------------------------------------------------------------------------ //
+// CreateInterface.
+// ------------------------------------------------------------------------------------ //
+EXPORT_FUNCTION IBaseInterface *CreateInterface( const char *pName, int *pReturnCode )
+{
+	InterfaceReg *pCur;
+	
+	for(pCur=InterfaceReg::s_pInterfaceRegs; pCur; pCur=pCur->m_pNext)
+	{
+		if(strcmp(pCur->m_pName, pName) == 0)
+		{
+			if ( pReturnCode )
+			{
+				*pReturnCode = IFACE_OK;
+			}
+			return pCur->m_CreateFn();
+		}
+	}
+	
+	if ( pReturnCode )
+	{
+		*pReturnCode = IFACE_FAILED;
+	}
+	return NULL;	
+}
+
+
+#ifdef _WIN32
+#define WIN32_LEAN_AND_MEAN
+#include "windows.h"
+#endif
+
+
+#ifdef _WIN32
+HINTERFACEMODULE Sys_LoadModule(const char *pModuleName)
+{
+	return (HINTERFACEMODULE)LoadLibrary(pModuleName);
+}
+
+#else  // LINUX
+HINTERFACEMODULE Sys_LoadModule(const char *pModuleName)
+{
+	// Linux dlopen() doesn't look in the current directory for libraries.
+	// We tell it to, so people don't have to 'install' libraries as root.
+
+	char szCwd[1024];
+	char szAbsoluteLibFilename[1024];
+
+	getcwd( szCwd, sizeof( szCwd ) );
+	if ( szCwd[ strlen( szCwd ) - 1 ] == '/' )
+		szCwd[ strlen( szCwd ) - 1 ] = 0;
+
+	sprintf( szAbsoluteLibFilename, "%s/%s", szCwd, pModuleName );
+
+	return (HINTERFACEMODULE)dlopen( szAbsoluteLibFilename, RTLD_NOW );
+}
+
+#endif
+
+
+#ifdef _WIN32
+void Sys_FreeModule(HINTERFACEMODULE hModule)
+{
+	if(!hModule)
+		return;
+
+	FreeLibrary((HMODULE)hModule);
+}
+
+#else  // LINUX
+void Sys_FreeModule(HINTERFACEMODULE hModule)
+{
+	if(!hModule)
+		return;
+
+	dlclose( (void *)hModule );
+}
+
+#endif
+
+
+//-----------------------------------------------------------------------------
+// Purpose: returns the instance of this module
+// Output : interface_instance_t
+//-----------------------------------------------------------------------------
+CreateInterfaceFn Sys_GetFactoryThis( void )
+{
+	return CreateInterface;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: returns the instance of the named module
+// Input  : *pModuleName - name of the module
+// Output : interface_instance_t - instance of that module
+//-----------------------------------------------------------------------------
+
+#ifdef _WIN32
+CreateInterfaceFn Sys_GetFactory( HINTERFACEMODULE hModule )
+{
+	if(!hModule)
+		return NULL;
+
+	return (CreateInterfaceFn)GetProcAddress((HMODULE)hModule, CREATEINTERFACE_PROCNAME);
+}
+
+#else  // LINUX
+CreateInterfaceFn Sys_GetFactory( HINTERFACEMODULE hModule )
+{
+	if(!hModule)
+		return NULL;
+
+	return (CreateInterfaceFn)dlsym( (void *)hModule, CREATEINTERFACE_PROCNAME );
+}
+
+#endif