libidn: Example 1

1 
1 9.1 Example 1
1 =============
1 
1 This example demonstrates how the stringprep functions are used.
1 
1 /* example.c --- Example code showing how to use stringprep().
1  * Copyright (C) 2002-2016 Simon Josefsson
1  *
1  * This file is part of GNU Libidn.
1  *
1  * This program is free software: you can redistribute it and/or modify
1  * it under the terms of the GNU General Public License as published by
1  * the Free Software Foundation, either version 3 of the License, or
1  * (at your option) any later version.
1  *
1  * This program is distributed in the hope that it will be useful,
1  * but WITHOUT ANY WARRANTY; without even the implied warranty of
1  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
1  * GNU General Public License for more details.
1  *
1  * You should have received a copy of the GNU General Public License
1  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
1  *
1  */
1 
1 #include <stdio.h>
1 #include <stdlib.h>
1 #include <string.h>
1 #include <locale.h>		/* setlocale() */
1 #include <stringprep.h>
1 
1 /*
1  * Compiling using libtool and pkg-config is recommended:
1  *
1  * $ libtool cc -o example example.c `pkg-config --cflags --libs libidn`
1  * $ ./example
1  * Input string encoded as `ISO-8859-1': ª
1  * Before locale2utf8 (length 2): aa 0a
1  * Before stringprep (length 3): c2 aa 0a
1  * After stringprep (length 2): 61 0a
1  * $
1  *
1  */
1 
1 int
1 main (void)
1 {
1   char buf[BUFSIZ];
1   char *p;
1   int rc;
1   size_t i;
1 
1   setlocale (LC_ALL, "");
1 
1   printf ("Input string encoded as `%s': ", stringprep_locale_charset ());
1   fflush (stdout);
1   if (!fgets (buf, BUFSIZ, stdin))
1     perror ("fgets");
1   buf[strlen (buf) - 1] = '\0';
1 
1   printf ("Before locale2utf8 (length %ld): ", (long int) strlen (buf));
1   for (i = 0; i < strlen (buf); i++)
1     printf ("%02x ", (unsigned) buf[i] & 0xFF);
1   printf ("\n");
1 
1   p = stringprep_locale_to_utf8 (buf);
1   if (p)
1     {
1       strcpy (buf, p);
1       free (p);
1     }
1   else
1     printf ("Could not convert string to UTF-8, continuing anyway...\n");
1 
1   printf ("Before stringprep (length %ld): ", (long int) strlen (buf));
1   for (i = 0; i < strlen (buf); i++)
1     printf ("%02x ", (unsigned) buf[i] & 0xFF);
1   printf ("\n");
1 
1   rc = stringprep (buf, BUFSIZ, 0, stringprep_nameprep);
1   if (rc != STRINGPREP_OK)
1     printf ("Stringprep failed (%d): %s\n", rc, stringprep_strerror (rc));
1   else
1     {
1       printf ("After stringprep (length %ld): ", (long int) strlen (buf));
1       for (i = 0; i < strlen (buf); i++)
1 	printf ("%02x ", (unsigned) buf[i] & 0xFF);
1       printf ("\n");
1     }
1 
1   return 0;
1 }
1