1 #include <string.h> 2 #include <stdio.h> 3 #include <wchar.h> 4 #include <stdlib.h> 5 6 #include "test_helpers.h" 7 8 int main(void) { 9 mbstate_t state; 10 memset(&state, 0, sizeof state); 11 wchar_t in[] = L"zß水��"; // or "z\u00df\u6c34\U0001F34C" 12 size_t in_sz = sizeof in / sizeof *in; 13 14 printf("Processing %zu wchar_t units: [ ", in_sz); 15 for(size_t n = 0; n < in_sz; ++n) printf("%#x ", (unsigned int)in[n]); 16 puts("]"); 17 18 char out[MB_CUR_MAX * in_sz]; 19 char *p = out; 20 for(size_t n = 0; n < in_sz; ++n) { 21 int rc = wcrtomb(p, in[n], &state); 22 if(rc == -1) break; 23 p += rc; 24 } 25 26 size_t out_sz = p - out; 27 printf("into %zu UTF-8 code units: [ ", out_sz); 28 for(size_t x = 0; x < out_sz; ++x) printf("%#x ", +(unsigned char)out[x]); 29 puts("]"); 30 } 31