Re: Bibliothèques

Voilà un petit exemple vite-fait avec iconv, qui prend de l'UCS-4 ("hexadécimal") en entrée et qui sort de l'UTF-8.

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <errno.h>
#include <iconv.h>
#include <endian.h>
int main(int argc, char **argv)
{
 uint32_t ucode[] = {
 htobe32(0x0391), /* A */
 htobe32(0x1FB9), /* A& */
 htobe32(0x1FB8), /* A' */
 htobe32(0x1F09), /* A( */
 htobe32(0x1F0D), /* A(/ */
 };
 char buf[32] = "";
 iconv_t cd;
 char *inbuf, *outbuf;
 size_t insize, outsize, status, outlen, i;
 inbuf = (char*)ucode;
 insize = sizeof(ucode);
 outbuf = buf;
 outsize = sizeof(buf);
 outlen = 0;
 cd = iconv_open("UTF-8", "UCS-4BE");
 do
 {
 printf("in: %zu bytes left\n", insize);
 printf("out: %zu bytes left\n", outsize);
 status = iconv(cd, &inbuf, &insize, &outbuf, &outsize);
 if(status == (size_t)-1)
 {
 perror("iconv");
 exit(1);
 }
 } while(insize > 0 && outsize > 0);
 iconv_close(cd);
 outlen = sizeof(buf) - outsize;
 printf("\n");
 printf("Output utf-8: \"%.*s\"\n", (int)outlen, buf);
 printf("\n");
 printf("%zu bytes:\n", outlen);
 for(i=0 ; i<outlen ; i++)
 {
 printf("out[%02zu] = 0x%X\n", i, (uint8_t)buf[i]);
 }
 return 0;
}