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Remove any duplicate manufacturer in the joystick name

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This commit is contained in:
Sam Lantinga 2019-12-10 11:30:56 -08:00
parent 3469481ef6
commit 2a161e7add
1 changed files with 24 additions and 0 deletions
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24
src/joystick/linux/SDL_sysjoystick.c
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@ -88,11 +88,26 @@ static time_t last_input_dir_mtime;
(((1UL << ((nr) % (sizeof(long) * 8))) & ((addr)[(nr) / (sizeof(long) * 8)])) != 0)
#define NBITS(x) ((((x)-1)/(sizeof(long) * 8))+1)
static int
PrefixMatch(const char *a, const char *b)
{
int matchlen = 0;
while (*a && *b) {
if (*a++ == *b++) {
++matchlen;
} else {
break;
}
}
return matchlen;
}
static int
IsJoystick(int fd, char *namebuf, const size_t namebuflen, SDL_JoystickGUID *guid)
{
struct input_id inpid;
Uint16 *guid16 = (Uint16 *)guid->data;
const char *spot;
#if !SDL_USE_LIBUDEV
/* When udev is enabled we only get joystick devices here, so there's no need to test them */
@ -116,6 +131,15 @@ IsJoystick(int fd, char *namebuf, const size_t namebuflen, SDL_JoystickGUID *gui
return 0;
}
/* Remove duplicate manufacturer in the name */
for (spot = namebuf + 1; *spot; ++spot) {
int matchlen = PrefixMatch(namebuf, spot);
if (matchlen > 0 && spot[matchlen - 1] == ' ') {
SDL_memmove(namebuf, spot, SDL_strlen(spot)+1);
break;
}
}
if (ioctl(fd, EVIOCGID, &inpid) < 0) {
return 0;
}