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Improved XInput VID/PID detection and added SDL_wcsstr() and SDL_wcsncmp()

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This commit is contained in:
Sam Lantinga 2019-11-20 16:42:50 -08:00
parent eb8f14bb6a
commit 650964461e
8 changed files with 254 additions and 78 deletions
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55
src/stdlib/SDL_string.c
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@ -421,17 +421,6 @@ SDL_strlen(const char *string)
#endif /* HAVE_STRLEN */
}
wchar_t *
SDL_wcsdup(const wchar_t *string)
{
size_t len = ((SDL_wcslen(string) + 1) * sizeof(wchar_t));
wchar_t *newstr = (wchar_t *)SDL_malloc(len);
if (newstr) {
SDL_memcpy(newstr, string, len);
}
return newstr;
}
size_t
SDL_wcslen(const wchar_t * string)
{
@ -477,6 +466,34 @@ SDL_wcslcat(SDL_INOUT_Z_CAP(maxlen) wchar_t *dst, const wchar_t *src, size_t max
#endif /* HAVE_WCSLCAT */
}
wchar_t *
SDL_wcsdup(const wchar_t *string)
{
size_t len = ((SDL_wcslen(string) + 1) * sizeof(wchar_t));
wchar_t *newstr = (wchar_t *)SDL_malloc(len);
if (newstr) {
SDL_memcpy(newstr, string, len);
}
return newstr;
}
wchar_t *
SDL_wcsstr(const wchar_t *haystack, const wchar_t *needle)
{
#if defined(HAVE_WCSSTR)
return SDL_const_cast(wchar_t*,wcsstr(haystack, needle));
#else
size_t length = SDL_wcslen(needle);
while (*haystack) {
if (SDL_wcsncmp(haystack, needle, length) == 0) {
return (wchar_t *)haystack;
}
++haystack;
}
return NULL;
#endif /* HAVE_WCSSTR */
}
int
SDL_wcscmp(const wchar_t *str1, const wchar_t *str2)
{
@ -493,6 +510,22 @@ SDL_wcscmp(const wchar_t *str1, const wchar_t *str2)
#endif /* HAVE_WCSCMP */
}
int
SDL_wcsncmp(const wchar_t *str1, const wchar_t *str2, size_t maxlen)
{
#if defined(HAVE_WCSNCMP)
return wcsncmp(str1, str2, maxlen);
#else
while (*str1 && *str2) {
if (*str1 != *str2)
break;
++str1;
++str2;
}
return (int)(*str1 - *str2);
#endif /* HAVE_WCSNCMP */
}
size_t
SDL_strlcpy(SDL_OUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen)
{