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#include <assert.h>
#include <libnu/casemap.h>
#ifdef NU_WITH_TOLOWER
#include <libnu/casemap_internal.h>
#include "gen/_tolower.c"
/* in nu_casemap_read (UTF-8), zero-terminated */
static const char *__nu_final_sigma = "ς";
const char* nu_tolower(uint32_t codepoint) {
return _nu_to_something(codepoint, NU_TOLOWER_G, NU_TOLOWER_G_SIZE,
NU_TOLOWER_VALUES_C, NU_TOLOWER_VALUES_I, NU_TOLOWER_COMBINED);
}
const char* _nu_tolower(const char *encoded, const char *limit, nu_read_iterator_t read,
uint32_t *u, const char **transform,
void *context) {
(void)(context);
uint32_t _u = 0;
const char *np = read(encoded, &_u);
if (u != 0) {
*u = _u;
}
/* handling of 0x03A3 ('Σ')
*
* this is the only language-independent exception described in
* SpecialCasing.txt (Unicode 7.0) */
assert(nu_casemap_read == nu_utf8_read);
if (_u == 0x03A3) {
if (np >= limit) {
*transform = __nu_final_sigma;
return np;
}
uint32_t nu = 0;
read(np, &nu);
if (nu == 0) {
*transform = __nu_final_sigma;
return np;
}
}
*transform = nu_tolower(_u);
return np;
}
#endif /* NU_WITH_TOLOWER */
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