examples/example.c

   1 /* example.c --- Example code showing how to use stringprep().
   2  * Copyright (C) 2002, 2003, 2004  Simon Josefsson
   3  *
   4  * This file is part of GNU Libidn.
   5  *
   6  * GNU Libidn is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * GNU Libidn is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with GNU Libidn; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  */
  21
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <locale.h>             /* setlocale() */
  26 #include <stringprep.h>
  27
  28 /*
  29  * Compiling using libtool and pkg-config is recommended:
  30  *
  31  * $ libtool cc -o example example.c `pkg-config --cflags --libs libidn`
  32  * $ ./example
  33  * Input string encoded as `ISO-8859-1': ª
  34  * Before locale2utf8 (length 2): aa 0a
  35  * Before stringprep (length 3): c2 aa 0a
  36  * After stringprep (length 2): 61 0a
  37  * $
  38  *
  39  */
  40
  41 int
  42 main (int argc, char *argv[])
  43 {
  44   char buf[BUFSIZ];
  45   char *p;
  46   int rc;
  47   size_t i;
  48
  49   setlocale (LC_ALL, "");
  50
  51   printf ("Input string encoded as `%s': ", stringprep_locale_charset ());
  52   fflush (stdout);
  53   fgets (buf, BUFSIZ, stdin);
  54
  55   printf ("Before locale2utf8 (length %d): ", strlen (buf));
  56   for (i = 0; i < strlen (buf); i++)
  57     printf ("%02x ", buf[i] & 0xFF);
  58   printf ("\n");
  59
  60   p = stringprep_locale_to_utf8 (buf);
  61   if (p)
  62     {
  63       strcpy (buf, p);
  64       free (p);
  65     }
  66   else
  67     printf ("Could not convert string to UTF-8, continuing anyway...\n");
  68
  69   printf ("Before stringprep (length %d): ", strlen (buf));
  70   for (i = 0; i < strlen (buf); i++)
  71     printf ("%02x ", buf[i] & 0xFF);
  72   printf ("\n");
  73
  74   rc = stringprep (buf, BUFSIZ, 0, stringprep_nameprep);
  75   if (rc != STRINGPREP_OK)
  76     printf ("Stringprep failed (%d): %s\n", rc, stringprep_strerror (rc));
  77   else
  78     {
  79       printf ("After stringprep (length %d): ", strlen (buf));
  80       for (i = 0; i < strlen (buf); i++)
  81         printf ("%02x ", buf[i] & 0xFF);
  82       printf ("\n");
  83     }
  84
  85   return 0;
  86 }