cfutils.c

   1 /* cfutils.c
   2  * Routines to work around deficiencies in Core Foundation, such as the
   3  * lack of a routine to convert a CFString to a C string of arbitrary
   4  * size.
   5  *
   6  * $Id$
   7  *
   8  * Wireshark - Network traffic analyzer
   9  * By Gerald Combs <gerald@wireshark.org>
  10  * Copyright 2001 Gerald Combs
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with this program; if not, write to the Free Software
  24  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  25  */
  26
  27 #include "config.h"
  28
  29 #ifdef HAVE_OS_X_FRAMEWORKS
  30 #include <glib.h>
  31 #include <CoreFoundation/CoreFoundation.h>
  32 #include "cfutils.h"
  33
  34 /*
  35  * Convert a CFString to a UTF-8-encoded C string; the resulting string
  36  * is allocated with g_malloc().  Returns NULL if the conversion fails.
  37  */
  38 char *
  39 CFString_to_C_string(CFStringRef cfstring)
  40 {
  41         CFIndex string_len;
  42         char *string;
  43
  44         string_len = CFStringGetMaximumSizeForEncoding(CFStringGetLength(cfstring),
  45             kCFStringEncodingUTF8);
  46         string = (char *)g_malloc(string_len + 1);
  47         if (!CFStringGetCString(cfstring, string, string_len + 1,
  48             kCFStringEncodingUTF8)) {
  49                 g_free(string);
  50                 return NULL;
  51         }
  52         return string;
  53 }
  54 #endif
  55
  56