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stdlib: added SDL_utf8strlen().

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Ryan C. Gordon 2017-05-29 03:01:05 -04:00
parent fc510bd798
commit d4086e4a70
4 changed files with 20 additions and 0 deletions
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17
src/stdlib/SDL_string.c
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@ -509,6 +509,23 @@ size_t SDL_utf8strlcpy(SDL_OUT_Z_CAP(dst_bytes) char *dst, const char *src, size
return bytes;
}
size_t
SDL_utf8strlen(const char *str)
{
size_t retval = 0;
const char *p = str;
char ch;
while ((ch = *(p++))) {
/* if top two bits are 1 and 0, it's a continuation byte. */
if ((ch & 0xc0) != 0x80) {
retval++;
}
}
return retval;
}
size_t
SDL_strlcat(SDL_INOUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen)
{