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152 lines
3.4 KiB
152 lines
3.4 KiB
//========= Copyright © 1996-2002, Valve LLC, All rights reserved. ============ |
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// |
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// Purpose: |
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// |
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// $NoKeywords: $ |
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//============================================================================= |
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#include <string.h> |
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#include <stdlib.h> |
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#include "interface.h" |
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#ifndef _WIN32 // LINUX |
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#include <dlfcn.h> |
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#include <unistd.h> // getcwd |
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#include <stdio.h> // sprintf |
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#endif |
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// ------------------------------------------------------------------------------------ // |
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// InterfaceReg. |
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// ------------------------------------------------------------------------------------ // |
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InterfaceReg *InterfaceReg::s_pInterfaceRegs = NULL; |
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InterfaceReg::InterfaceReg( InstantiateInterfaceFn fn, const char *pName ) : |
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m_pName(pName) |
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{ |
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m_CreateFn = fn; |
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m_pNext = s_pInterfaceRegs; |
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s_pInterfaceRegs = this; |
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} |
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// ------------------------------------------------------------------------------------ // |
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// CreateInterface. |
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// ------------------------------------------------------------------------------------ // |
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EXPORT_FUNCTION IBaseInterface *CreateInterface( const char *pName, int *pReturnCode ) |
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{ |
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InterfaceReg *pCur; |
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for(pCur=InterfaceReg::s_pInterfaceRegs; pCur; pCur=pCur->m_pNext) |
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{ |
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if(strcmp(pCur->m_pName, pName) == 0) |
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{ |
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if ( pReturnCode ) |
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{ |
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*pReturnCode = IFACE_OK; |
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} |
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return pCur->m_CreateFn(); |
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} |
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} |
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if ( pReturnCode ) |
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{ |
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*pReturnCode = IFACE_FAILED; |
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} |
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return NULL; |
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} |
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#ifdef _WIN32 |
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#define WIN32_LEAN_AND_MEAN |
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#define HSPRITE WINAPI_HSPRITE |
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#include "windows.h" |
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#undef HSPRITE |
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#endif |
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#ifdef _WIN32 |
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HINTERFACEMODULE Sys_LoadModule(const char *pModuleName) |
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{ |
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return (HINTERFACEMODULE)LoadLibrary(pModuleName); |
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} |
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#else // LINUX |
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HINTERFACEMODULE Sys_LoadModule(const char *pModuleName) |
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{ |
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// Linux dlopen() doesn't look in the current directory for libraries. |
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// We tell it to, so people don't have to 'install' libraries as root. |
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char szCwd[1024]; |
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char szAbsoluteLibFilename[1024]; |
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getcwd( szCwd, sizeof( szCwd ) ); |
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if ( szCwd[ strlen( szCwd ) - 1 ] == '/' ) |
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szCwd[ strlen( szCwd ) - 1 ] = 0; |
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sprintf( szAbsoluteLibFilename, "%s/%s", szCwd, pModuleName ); |
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return (HINTERFACEMODULE)dlopen( szAbsoluteLibFilename, RTLD_NOW ); |
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} |
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#endif |
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#ifdef _WIN32 |
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void Sys_FreeModule(HINTERFACEMODULE hModule) |
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{ |
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if(!hModule) |
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return; |
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FreeLibrary((HMODULE)hModule); |
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} |
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#else // LINUX |
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void Sys_FreeModule(HINTERFACEMODULE hModule) |
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{ |
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if(!hModule) |
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return; |
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dlclose( (void *)hModule ); |
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} |
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#endif |
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//----------------------------------------------------------------------------- |
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// Purpose: returns the instance of this module |
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// Output : interface_instance_t |
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//----------------------------------------------------------------------------- |
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CreateInterfaceFn Sys_GetFactoryThis( void ) |
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{ |
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return CreateInterface; |
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} |
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//----------------------------------------------------------------------------- |
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// Purpose: returns the instance of the named module |
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// Input : *pModuleName - name of the module |
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// Output : interface_instance_t - instance of that module |
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//----------------------------------------------------------------------------- |
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#ifdef _WIN32 |
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CreateInterfaceFn Sys_GetFactory( HINTERFACEMODULE hModule ) |
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{ |
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if(!hModule) |
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return NULL; |
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return (CreateInterfaceFn)GetProcAddress((HMODULE)hModule, CREATEINTERFACE_PROCNAME); |
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} |
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#else // LINUX |
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CreateInterfaceFn Sys_GetFactory( HINTERFACEMODULE hModule ) |
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{ |
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if(!hModule) |
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return NULL; |
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return (CreateInterfaceFn)dlsym( (void *)hModule, CREATEINTERFACE_PROCNAME ); |
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} |
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#endif
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