eglib/src/gerror.c

   1 /*
   2  * gerror.c: Error support.
   3  *
   4  * Author:
   5  *   Miguel de Icaza (miguel@novell.com)
   6  *
   7  * (C) 2006 Novell, Inc.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining
  10  * a copy of this software and associated documentation files (the
  11  * "Software"), to deal in the Software without restriction, including
  12  * without limitation the rights to use, copy, modify, merge, publish,
  13  * distribute, sublicense, and/or sell copies of the Software, and to
  14  * permit persons to whom the Software is furnished to do so, subject to
  15  * the following conditions:
  16  *
  17  * The above copyright notice and this permission notice shall be
  18  * included in all copies or substantial portions of the Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27  */
  28 #include <stdio.h>
  29 #include <stdarg.h>
  30 #include <string.h>
  31 #include <glib.h>
  32
  33 GError *
  34 g_error_new (gpointer domain, gint code, const char *format, ...)
  35 {
  36         va_list args;
  37         GError *err = g_new (GError, 1);
  38
  39         err->domain = domain;
  40         err->code = code;
  41
  42         va_start (args, format);
  43         if (vasprintf (&err->message, format, args) == -1)
  44                 err->message = g_strdup_printf ("internal: invalid format string %s", format);
  45         va_end (args);
  46
  47         return err;
  48 }
  49
  50 static GError *
  51 g_error_vnew (gpointer domain, gint code, const char *format, va_list ap)
  52 {
  53         GError *err = g_new (GError, 1);
  54
  55         err->domain = domain;
  56         err->code = code;
  57
  58         if (vasprintf (&err->message, format, ap) == -1)
  59                 err->message = g_strdup_printf ("internal: invalid format string %s", format);
  60
  61         return err;
  62 }
  63
  64 void
  65 g_clear_error (GError **error)
  66 {
  67         if (error && *error) {
  68                 g_error_free (*error);
  69                 *error = NULL;
  70         }
  71 }
  72
  73 void
  74 g_error_free (GError *error)
  75 {
  76         g_return_if_fail (error != NULL);
  77
  78         free (error->message);
  79         g_free (error);
  80 }
  81
  82 void
  83 g_set_error (GError **err, gpointer domain, gint code, const gchar *format, ...)
  84 {
  85         va_list args;
  86
  87         if (err) {
  88                 va_start (args, format);
  89                 *err = g_error_vnew (domain, code, format, args);
  90                 va_end (args);
  91         }
  92 }
  93
  94 void
  95 g_propagate_error (GError **dest, GError *src)
  96 {
  97         if (dest == NULL){
  98                 if (src)
  99                         g_error_free (src);
 100         } else {
 101                 *dest = src;
 102         }
 103 }