FM / examples

/usr/share/doc/libidn-devel/examples

Name	Size	Mode	Actions
example.c	2444	0644	edit dl rm
example2.c	6435	0644	edit dl rm
example3.c	2322	0644	edit dl rm
example4.c	2333	0644	edit dl rm
example5.c	3279	0644	edit dl rm
Makefile.am	1003	0644	edit dl rm
Makefile.in	57838	0644	edit dl rm
README	1150	0644	edit dl rm

Edit: /usr/share/doc/libidn-devel/examples/example4.c (2333B)

/* example4.c --- Example ToUnicode() code showing how to use Libidn.
 * Copyright (C) 2002-2016 Simon Josefsson
 *
 * This file is part of GNU Libidn.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <locale.h>		/* setlocale() */
#include <stringprep.h>		/* stringprep_locale_charset() */
#include <idna.h>		/* idna_to_unicode_lzlz() */

/*
 * Compiling using libtool and pkg-config is recommended:
 *
 * $ libtool cc -o example4 example4.c `pkg-config --cflags --libs libidn`
 * $ ./example4
 * Input domain encoded as `ISO-8859-1': www.xn--rksmrgsa-0zap8p.example
 * Read string (length 33): 77 77 77 2e 78 6e 2d 2d 72 6b 73 6d 72 67 73 61 2d 30 7a 61 70 38 70 2e 65 78 61 6d 70 6c 65
 * ACE label (length 23): 'www.räksmörgåsa.example'
 * 77 77 77 2e 72 e4 6b 73 6d f6 72 67 e5 73 61 2e 65 78 61 6d 70 6c 65
 * $
 *
 */

int
main (void)
{
  char buf[BUFSIZ];
  char *p;
  int rc;
  size_t i;

setlocale (LC_ALL, "");

printf ("Input domain encoded as `%s': ", stringprep_locale_charset ());
  fflush (stdout);
  if (!fgets (buf, BUFSIZ, stdin))
    perror ("fgets");
  buf[strlen (buf) - 1] = '\0';

printf ("Read string (length %ld): ", (long int) strlen (buf));
  for (i = 0; i < strlen (buf); i++)
    printf ("%02x ", (unsigned) buf[i] & 0xFF);
  printf ("\n");

rc = idna_to_unicode_lzlz (buf, &p, 0);
  if (rc != IDNA_SUCCESS)
    {
      printf ("ToUnicode() failed (%d): %s\n", rc, idna_strerror (rc));
      return EXIT_FAILURE;
    }

printf ("ACE label (length %ld): '%s'\n", (long int) strlen (p), p);
  for (i = 0; i < strlen (p); i++)
    printf ("%02x ", (unsigned) p[i] & 0xFF);
  printf ("\n");

free (p);

return 0;
}

cmd: