/*
    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
*/

// 7-25-2010 Wei Mingzhi
// Removed everything unrelated to Mac OS X Joystick support.

#include "SDL_config.h"

/* Initialization code for SDL */

#include "SDL.h"

/* Initialization/Cleanup routines */
extern int  SDL_JoystickInit(void);
extern void SDL_JoystickQuit(void);

/* The current SDL version */
static SDL_version version = 
	{ SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL };

/* The initialized subsystems */
static Uint32 SDL_initialized = 0;

int SDL_InitSubSystem(Uint32 flags)
{
	/* Initialize the joystick subsystem */
	if ( (flags & SDL_INIT_JOYSTICK) &&
	     !(SDL_initialized & SDL_INIT_JOYSTICK) ) {
		if ( SDL_JoystickInit() < 0 ) {
			return(-1);
		}
		SDL_initialized |= SDL_INIT_JOYSTICK;
	}

	return(0);
}

int SDL_Init(Uint32 flags)
{
	/* Clear the error message */
	SDL_ClearError();

	/* Initialize the desired subsystems */
	if ( SDL_InitSubSystem(flags) < 0 ) {
		return(-1);
	}

	return(0);
}

void SDL_QuitSubSystem(Uint32 flags)
{
	/* Shut down requested initialized subsystems */
	if ( (flags & SDL_initialized & SDL_INIT_JOYSTICK) ) {
		SDL_JoystickQuit();
		SDL_initialized &= ~SDL_INIT_JOYSTICK;
	}
}

Uint32 SDL_WasInit(Uint32 flags)
{
	if ( ! flags ) {
		flags = SDL_INIT_EVERYTHING;
	}
	return (SDL_initialized&flags);
}

void SDL_Quit(void)
{
	/* Quit all subsystems */
	SDL_QuitSubSystem(SDL_INIT_EVERYTHING);
}

/* Return the library version number */
const SDL_version * SDL_Linked_Version(void)
{
	return(&version);
}