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#include <uchar.h>
#include <stdio.h>
#include <string.h>
#include <locale.h>
void print_string(char const*s) {
char const*str = s;
size_t n = strlen(str)+1;
char8_t buffer[n+1];
printf("mb→utf8, source: '%s', sliced: ", str);
mbstate_t mb = { 0 };
for (char8_t *p = buffer; ; p++) {
size_t res = mbrtoc8(p, str, n, &mb);
if (res > -3) {
printf("!error:%zu!\n", -res);
return;
} else if (res == -3) {
printf(",%hhx", *p);
} else if (res) {
printf("|%hhx", *p);
str += res;
} else {
printf("(%hhx)", *p);
str++;
break;
}
}
printf("; target: %s\n", buffer);
memset(buffer, 0, sizeof buffer);
char *p = (char*)buffer;
printf("utf8→mb, source: '%s', ", s);
for (char const *q = s; ; q++) {
size_t res = c8rtomb(p, *q, &mb);
if (res) {
switch (res) {
default: printf("∞"); res = -1; break;
case 4: printf("<-->"); break;
case 3: printf("<->"); break;
case 2: printf("<>"); break;
case 1: printf("x"); break;
}
if (!*p || (res == -1)) break;
else p += res;
}
}
printf("; target: %s\n", buffer);
}
int main(int argc, char* argv[static argc+1]) {
if (argc > 1)
setlocale(LC_ALL, "");
print_string(u8"abcdäα⌫");
print_string(u8"→😇");
}
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