- struct dynstr d;
- uint32_t c;
- const char *s = ptr;
-
- dynstr_init(&d);
- while(*s) {
- /* Convert UTF-8 to UCS-32 */
- PARSE_UTF8(s, c, return ptr);
- /* Normalize */
- if(c < UNICODE_NCHARS) {
- /* If this a known character, convert it to lower case */
- const struct unidata *const ud = &unidata[c / 256][c % 256];
- c += ud->lower_offset;
- }
- /* Convert UCS-4 back to UTF-8 */
- one_ucs42utf8(c, &d);
- }
- dynstr_terminate(&d);
- return d.vec;