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Cleanup for the /dev/js* support (thanks @meyraud705)

This commit is contained in:
Sam Lantinga 2021-11-11 06:30:36 -08:00
parent 3090812e1e
commit bd92a95f22
1 changed files with 33 additions and 8 deletions
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41
src/joystick/linux/SDL_sysjoystick.c
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@ -85,7 +85,7 @@ typedef enum
static EnumerationMethod enumeration_method = ENUMERATION_UNSET;
static SDL_bool IsJoystickDeviceNode(const char *node);
static SDL_bool IsJoystickJSNode(const char *node);
static int MaybeAddDevice(const char *path);
static int MaybeRemoveDevice(const char *path);
@ -186,8 +186,7 @@ IsJoystick(int fd, char **name_return, SDL_JoystickGUID *guid)
char product_string[128];
if (ioctl(fd, JSIOCGNAME(sizeof(product_string)), product_string) >= 0) {
inpid.vendor = 0;
inpid.product = 0;
SDL_zero(inpid);
} else {
/* When udev is enabled we only get joystick devices here, so there's no need to test them */
if (enumeration_method != ENUMERATION_LIBUDEV && !GuessIsJoystick(fd)) {
@ -261,8 +260,14 @@ static void joystick_udev_callback(SDL_UDEV_deviceevent udev_type, int udev_clas
if (!(udev_class & SDL_UDEV_DEVICE_JOYSTICK)) {
return;
}
if (SDL_classic_joysticks && !IsJoystickDeviceNode(devpath)) {
return;
if (SDL_classic_joysticks) {
if (!IsJoystickJSNode(devpath)) {
return;
}
} else {
if (IsJoystickJSNode(devpath)) {
return;
}
}
MaybeAddDevice(devpath);
break;
@ -518,16 +523,32 @@ StrIsInteger(const char *string)
}
static SDL_bool
IsJoystickDeviceNode(const char *node)
IsJoystickJSNode(const char *node)
{
const char *last_slash = SDL_strrchr(node, '/');
if (last_slash) {
node = last_slash + 1;
}
return (StrHasPrefix(node, "js") && StrIsInteger(node + 2));
}
static SDL_bool
IsJoystickEventNode(const char *node)
{
const char *last_slash = SDL_strrchr(node, '/');
if (last_slash) {
node = last_slash + 1;
}
return (StrHasPrefix(node, "event") && StrIsInteger(node + 5));
}
static SDL_bool
IsJoystickDeviceNode(const char *node)
{
if (SDL_classic_joysticks) {
return (StrHasPrefix(node, "js") && StrIsInteger(node + 2));
return IsJoystickJSNode(node);
} else {
return (StrHasPrefix(node, "event") && StrIsInteger(node + 5));
return IsJoystickEventNode(node);
}
}
@ -958,6 +979,8 @@ ConfigJoystick(SDL_Joystick *joystick, int fd)
joystick->hwdata->key_pam = NULL;
key_pam_size = 0;
}
} else {
key_pam_size = 0;
}
for (i = 0; i < key_pam_size; ++i) {
Uint16 code = joystick->hwdata->key_pam[i];
@ -977,6 +1000,8 @@ ConfigJoystick(SDL_Joystick *joystick, int fd)
joystick->hwdata->abs_pam = NULL;
abs_pam_size = 0;
}
} else {
abs_pam_size = 0;
}
for (i = 0; i < abs_pam_size; ++i) {
Uint8 code = joystick->hwdata->abs_pam[i];