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#include "mbstring.h"
#include "unicode/prop.h"
#include "unicode/string.h"
size_t
u8upper(char8_t *dst, size_t dstn, const char8_t *src, size_t srcn,
enum upper_flags flags)
{
struct ucctx ctx = {
.az_or_tr = flags & UF_LANG_AZ,
.cap_eszett = flags & UF_ẞ,
};
rune ch;
size_t n = 0;
bool prev_was_i = false;
while (u8next(&ch, &src, &srcn)) {
if (ch == 0x307 && prev_was_i && (flags & UF_LANG_LT))
ctx.lt_after_i = true;
struct rview rv = uprop_get_uc(ch, ctx);
for (size_t i = 0; i < rv.len; i++) {
if (n >= dstn) {
char8_t buf[U8_LEN_MAX];
n += rtou8(buf, sizeof(buf), rv.p[i]);
} else
n += rtou8(dst + n, dstn - n, rv.p[i]);
}
prev_was_i = ch == 'i';
ctx.lt_after_i = false;
}
return n;
}
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