examples/example.c

   1 /* example.c --- Example code showing how to use stringprep().
   2  * Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007  Simon Josefsson
   3  *
   4  * This file is part of GNU Libidn.
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation, either version 3 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program 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
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  *
  19  */
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <locale.h>             /* setlocale() */
  25 #include <stringprep.h>
  26
  27 /*
  28  * Compiling using libtool and pkg-config is recommended:
  29  *
  30  * $ libtool cc -o example example.c `pkg-config --cflags --libs libidn`
  31  * $ ./example
  32  * Input string encoded as `ISO-8859-1': ª
  33  * Before locale2utf8 (length 2): aa 0a
  34  * Before stringprep (length 3): c2 aa 0a
  35  * After stringprep (length 2): 61 0a
  36  * $
  37  *
  38  */
  39
  40 int
  41 main (int argc, char *argv[])
  42 {
  43   char buf[BUFSIZ];
  44   char *p;
  45   int rc;
  46   size_t i;
  47
  48   setlocale (LC_ALL, "");
  49
  50   printf ("Input string encoded as `%s': ", stringprep_locale_charset ());
  51   fflush (stdout);
  52   fgets (buf, BUFSIZ, stdin);
  53
  54   printf ("Before locale2utf8 (length %d): ", strlen (buf));
  55   for (i = 0; i < strlen (buf); i++)
  56     printf ("%02x ", buf[i] & 0xFF);
  57   printf ("\n");
  58
  59   p = stringprep_locale_to_utf8 (buf);
  60   if (p)
  61     {
  62       strcpy (buf, p);
  63       free (p);
  64     }
  65   else
  66     printf ("Could not convert string to UTF-8, continuing anyway...\n");
  67
  68   printf ("Before stringprep (length %d): ", strlen (buf));
  69   for (i = 0; i < strlen (buf); i++)
  70     printf ("%02x ", buf[i] & 0xFF);
  71   printf ("\n");
  72
  73   rc = stringprep (buf, BUFSIZ, 0, stringprep_nameprep);
  74   if (rc != STRINGPREP_OK)
  75     printf ("Stringprep failed (%d): %s\n", rc, stringprep_strerror (rc));
  76   else
  77     {
  78       printf ("After stringprep (length %d): ", strlen (buf));
  79       for (i = 0; i < strlen (buf); i++)
  80         printf ("%02x ", buf[i] & 0xFF);
  81       printf ("\n");
  82     }
  83
  84   return 0;
  85 }