/*

    SDL - Simple DirectMedia Layer

    Copyright (C) 1997-2006 Sam Lantinga

    This library is free software; you can redistribute it and/or

    modify it under the terms of the GNU Lesser General Public

    License as published by the Free Software Foundation; either

    version 2.1 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public

    License along with this library; if not, write to the Free Software

    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

    Sam Lantinga

    slouken@libsdl.org

*/

#include "SDL_config.h"

#ifdef SDL_LOADSO_DLOPEN

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/* System dependent library loading routines                           */

#include <stdio.h>

#include <dlfcn.h>

#include "SDL_loadso.h"

void *SDL_LoadObject(const char *sofile)

{

	void *handle = dlopen(sofile, RTLD_NOW);

	const char *loaderror = (char *)dlerror();

	if ( handle == NULL ) {

		SDL_SetError("Failed loading %s: %s", sofile, loaderror);

	}

	return(handle);

}

void *SDL_LoadFunction(void *handle, const char *name)

{

	void *symbol = dlsym(handle, name);

	if ( symbol == NULL ) {

		/* append an underscore for platforms that need that. */

		size_t len = 1+SDL_strlen(name)+1;

		char *_name = SDL_stack_alloc(char, len);

		_name[0] = '_';

		SDL_strlcpy(&_name[1], name, len);

		symbol = dlsym(handle, _name);

		SDL_stack_free(_name);

		if ( symbol == NULL ) {

			SDL_SetError("Failed loading %s: %s", name, (const char *)dlerror());

		}

	}

	return(symbol);

}

void SDL_UnloadObject(void *handle)

{

	if ( handle != NULL ) {

		dlclose(handle);

	}

}

#endif /* SDL_LOADSO_DLOPEN */