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      1 /* gerror.h - Error reporting system
      2  *
      3  *  Copyright 2000 Red Hat, Inc.
      4  *
      5  * The Gnome Library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Lesser General Public License as
      7  * published by the Free Software Foundation; either version 2 of the
      8  * License, or (at your option) any later version.
      9  *
     10  * The Gnome Library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Lesser General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Lesser General Public
     16  * License along with the Gnome Library; see the file COPYING.LIB.  If not,
     17  * write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
     18  *   Boston, MA 02111-1307, USA.
     19  */
     20 
     21 #if defined(G_DISABLE_SINGLE_INCLUDES) && !defined (__GLIB_H_INSIDE__) && !defined (GLIB_COMPILATION)
     22 #error "Only <glib.h> can be included directly."
     23 #endif
     24 
     25 #ifndef __G_ERROR_H__
     26 #define __G_ERROR_H__
     27 
     28 #include <glib/gquark.h>
     29 
     30 G_BEGIN_DECLS
     31 
     32 typedef struct _GError GError;
     33 
     34 struct _GError
     35 {
     36   GQuark       domain;
     37   gint         code;
     38   gchar       *message;
     39 };
     40 
     41 GError*  g_error_new           (GQuark         domain,
     42                                 gint           code,
     43                                 const gchar   *format,
     44                                 ...) G_GNUC_PRINTF (3, 4);
     45 
     46 GError*  g_error_new_literal   (GQuark         domain,
     47                                 gint           code,
     48                                 const gchar   *message);
     49 
     50 void     g_error_free          (GError        *error);
     51 GError*  g_error_copy          (const GError  *error);
     52 
     53 gboolean g_error_matches       (const GError  *error,
     54                                 GQuark         domain,
     55                                 gint           code);
     56 
     57 /* if (err) *err = g_error_new(domain, code, format, ...), also has
     58  * some sanity checks.
     59  */
     60 void     g_set_error           (GError       **err,
     61                                 GQuark         domain,
     62                                 gint           code,
     63                                 const gchar   *format,
     64                                 ...) G_GNUC_PRINTF (4, 5);
     65 
     66 void     g_set_error_literal   (GError       **err,
     67                                 GQuark         domain,
     68                                 gint           code,
     69                                 const gchar   *message);
     70 
     71 /* if (dest) *dest = src; also has some sanity checks.
     72  */
     73 void     g_propagate_error     (GError       **dest,
     74 				GError        *src);
     75 
     76 /* if (err && *err) { g_error_free(*err); *err = NULL; } */
     77 void     g_clear_error         (GError       **err);
     78 
     79 /* if (err) prefix the formatted string to the ->message */
     80 void     g_prefix_error               (GError       **err,
     81                                        const gchar   *format,
     82                                        ...) G_GNUC_PRINTF (2, 3);
     83 
     84 /* g_propagate_error then g_error_prefix on dest */
     85 void     g_propagate_prefixed_error   (GError       **dest,
     86                                        GError        *src,
     87                                        const gchar   *format,
     88                                        ...) G_GNUC_PRINTF (3, 4);
     89 
     90 G_END_DECLS
     91 
     92 #endif /* __G_ERROR_H__ */
     93