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Don't bother re-encoding Latin1 characters in the ASCII range

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(cherry picked from commit 6150b5b3cb)
This commit is contained in:
Sam Lantinga
2023-06-04 05:37:06 -07:00
parent 2660da6f5c
commit 4700fbcbdf
3 changed files with 13 additions and 40 deletions
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36
src/stdlib/SDL_string.c
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@@ -621,42 +621,6 @@ SDL_utf8strnlen(const char *str, size_t bytes)
return retval;
}
SDL_bool SDL_utf8valid(const char *str, size_t bytes)
{
while (*str && bytes > 0) {
Uint8 ch = (Uint8)*str;
if (ch <= 0x7F) {
++str;
--bytes;
continue;
}
if (UTF8_IsLeadByte(ch)) {
size_t left = UTF8_TrailingBytes(ch);
if (bytes < left) {
return SDL_FALSE;
}
++str;
--bytes;
while (left-- > 0) {
ch = (Uint8)*str;
if (!UTF8_IsTrailingByte(ch)) {
return SDL_FALSE;
}
++str;
--bytes;
}
} else {
return SDL_FALSE;
}
}
return SDL_TRUE;
}
size_t
SDL_strlcat(SDL_INOUT_Z_CAP(maxlen) char *dst, const char *src, size_t maxlen)
{