151 lines
3.3 KiB
C++
151 lines
3.3 KiB
C++
//========= Copyright © 1996-2001, Valve LLC, All rights reserved. ============
|
|
//
|
|
// Purpose:
|
|
//
|
|
// $NoKeywords: $
|
|
//=============================================================================
|
|
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include "interface.h"
|
|
|
|
#ifndef _WIN32 // LINUX
|
|
#include <unistd.h>
|
|
#include <dlfcn.h>
|
|
#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
|