Mercurial > sdl-ios-xcode
diff src/joystick/SDL_joystick.c @ 4147:6bdec986f2f6 SDL-1.2
Fix bug 545, by returning early whenever an error occurs when initializing joystick structure
author | Patrice Mandin <patmandin@gmail.com> |
---|---|
date | Sat, 19 Jul 2008 11:54:55 +0000 |
parents | 97d0966f4bf7 |
children | a1b03ba2fcd0 |
line wrap: on
line diff
--- a/src/joystick/SDL_joystick.c Sat Jul 05 18:27:27 2008 +0000 +++ b/src/joystick/SDL_joystick.c Sat Jul 19 11:54:55 2008 +0000 @@ -112,64 +112,67 @@ /* Create and initialize the joystick */ joystick = (SDL_Joystick *)SDL_malloc((sizeof *joystick)); - if ( joystick != NULL ) { - SDL_memset(joystick, 0, (sizeof *joystick)); - joystick->index = device_index; - if ( SDL_SYS_JoystickOpen(joystick) < 0 ) { - SDL_free(joystick); - joystick = NULL; - } else { - if ( joystick->naxes > 0 ) { - joystick->axes = (Sint16 *)SDL_malloc - (joystick->naxes*sizeof(Sint16)); - } - if ( joystick->nhats > 0 ) { - joystick->hats = (Uint8 *)SDL_malloc - (joystick->nhats*sizeof(Uint8)); - } - if ( joystick->nballs > 0 ) { - joystick->balls = (struct balldelta *)SDL_malloc - (joystick->nballs*sizeof(*joystick->balls)); - } - if ( joystick->nbuttons > 0 ) { - joystick->buttons = (Uint8 *)SDL_malloc - (joystick->nbuttons*sizeof(Uint8)); - } - if ( ((joystick->naxes > 0) && !joystick->axes) - || ((joystick->nhats > 0) && !joystick->hats) - || ((joystick->nballs > 0) && !joystick->balls) - || ((joystick->nbuttons > 0) && !joystick->buttons)) { - SDL_OutOfMemory(); - SDL_JoystickClose(joystick); - joystick = NULL; - } - if ( joystick->axes ) { - SDL_memset(joystick->axes, 0, - joystick->naxes*sizeof(Sint16)); - } - if ( joystick->hats ) { - SDL_memset(joystick->hats, 0, - joystick->nhats*sizeof(Uint8)); - } - if ( joystick->balls ) { - SDL_memset(joystick->balls, 0, - joystick->nballs*sizeof(*joystick->balls)); - } - if ( joystick->buttons ) { - SDL_memset(joystick->buttons, 0, - joystick->nbuttons*sizeof(Uint8)); - } - } + if ( !joystick ) { + return(NULL); + } + + SDL_memset(joystick, 0, (sizeof *joystick)); + joystick->index = device_index; + if ( SDL_SYS_JoystickOpen(joystick) < 0 ) { + SDL_free(joystick); + return(NULL); + } + + if ( joystick->naxes > 0 ) { + joystick->axes = (Sint16 *)SDL_malloc + (joystick->naxes*sizeof(Sint16)); + } + if ( joystick->nhats > 0 ) { + joystick->hats = (Uint8 *)SDL_malloc + (joystick->nhats*sizeof(Uint8)); + } + if ( joystick->nballs > 0 ) { + joystick->balls = (struct balldelta *)SDL_malloc + (joystick->nballs*sizeof(*joystick->balls)); + } + if ( joystick->nbuttons > 0 ) { + joystick->buttons = (Uint8 *)SDL_malloc + (joystick->nbuttons*sizeof(Uint8)); } - if ( joystick ) { - /* Add joystick to list */ - ++joystick->ref_count; - SDL_Lock_EventThread(); - for ( i=0; SDL_joysticks[i]; ++i ) - /* Skip to next joystick */; - SDL_joysticks[i] = joystick; - SDL_Unlock_EventThread(); + if ( ((joystick->naxes > 0) && !joystick->axes) + || ((joystick->nhats > 0) && !joystick->hats) + || ((joystick->nballs > 0) && !joystick->balls) + || ((joystick->nbuttons > 0) && !joystick->buttons)) { + SDL_OutOfMemory(); + SDL_JoystickClose(joystick); + return(NULL); + } + + if ( joystick->axes ) { + SDL_memset(joystick->axes, 0, + joystick->naxes*sizeof(Sint16)); + } + if ( joystick->hats ) { + SDL_memset(joystick->hats, 0, + joystick->nhats*sizeof(Uint8)); } + if ( joystick->balls ) { + SDL_memset(joystick->balls, 0, + joystick->nballs*sizeof(*joystick->balls)); + } + if ( joystick->buttons ) { + SDL_memset(joystick->buttons, 0, + joystick->nbuttons*sizeof(Uint8)); + } + + /* Add joystick to list */ + ++joystick->ref_count; + SDL_Lock_EventThread(); + for ( i=0; SDL_joysticks[i]; ++i ) + /* Skip to next joystick */ ; + SDL_joysticks[i] = joystick; + SDL_Unlock_EventThread(); + return(joystick); }