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Added SDL_wcscasecmp() and SDL_wcsncasecmp()

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This commit is contained in:
Sam Lantinga 2020-11-24 12:43:01 -08:00
parent e4b7d9a221
commit 46a844786b
8 changed files with 93 additions and 2 deletions
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79
src/stdlib/SDL_string.c
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@ -531,6 +531,85 @@ SDL_wcsncmp(const wchar_t *str1, const wchar_t *str2, size_t maxlen)
#endif /* HAVE_WCSNCMP */
}
int
SDL_wcscasecmp(const wchar_t *str1, const wchar_t *str2)
{
#if defined(HAVE_WCSCASECMP)
return wcscasecmp(str1, str2);
#elif defined(HAVE__WCSICMP)
return _wcsicmp(str1, str2);
#else
wchar_t a = 0;
wchar_t b = 0;
while (*str1 && *str2) {
/* FIXME: This doesn't actually support wide characters */
if (*str1 >= 0x80 || *str2 >= 0x80) {
a = *str1;
b = *str2;
} else {
a = SDL_toupper((unsigned char) *str1);
b = SDL_toupper((unsigned char) *str2);
}
if (a != b)
break;
++str1;
++str2;
}
/* FIXME: This doesn't actually support wide characters */
if (*str1 >= 0x80 || *str2 >= 0x80) {
a = *str1;
b = *str2;
} else {
a = SDL_toupper((unsigned char) *str1);
b = SDL_toupper((unsigned char) *str2);
}
return (int) ((unsigned int) a - (unsigned int) b);
#endif /* HAVE__WCSICMP */
}
int
SDL_wcsncasecmp(const wchar_t *str1, const wchar_t *str2, size_t maxlen)
{
#if defined(HAVE_WCSNCASECMP)
return wcsncasecmp(str1, str2, maxlen);
#elif defined(HAVE__WCSNICMP)
return _wcsnicmp(str1, str2, maxlen);
#else
wchar_t a = 0;
wchar_t b = 0;
while (*str1 && *str2 && maxlen) {
/* FIXME: This doesn't actually support wide characters */
if (*str1 >= 0x80 || *str2 >= 0x80) {
a = *str1;
b = *str2;
} else {
a = SDL_toupper((unsigned char) *str1);
b = SDL_toupper((unsigned char) *str2);
}
if (a != b)
break;
++str1;
++str2;
--maxlen;
}
if (maxlen == 0) {
return 0;
} else {
/* FIXME: This doesn't actually support wide characters */
if (*str1 >= 0x80 || *str2 >= 0x80) {
a = *str1;
b = *str2;
} else {
a = SDL_toupper((unsigned char) *str1);
b = SDL_toupper((unsigned char) *str2);
}
return (int) ((unsigned int) a - (unsigned int) b);
}
#endif /* HAVE__WCSNICMP */
}
size_t
SDL_strlcpy(SDL_OUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen)
{