git.distorted.org.uk Git - u/mdw/catacomb/blob - key-error.c

   1 /* -*-c-*-
   2  *
   3  * $Id$
   4  *
   5  * Translating key error codes into strings
   6  *
   7  * (c) 2000 Straylight/Edgeware
   8  */
   9
  10 /*----- Licensing notice --------------------------------------------------*
  11  *
  12  * This file is part of Catacomb.
  13  *
  14  * Catacomb is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU Library General Public License as
  16  * published by the Free Software Foundation; either version 2 of the
  17  * License, or (at your option) any later version.
  18  *
  19  * Catacomb is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU Library General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU Library General Public
  25  * License along with Catacomb; if not, write to the Free
  26  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  27  * MA 02111-1307, USA.
  28  */
  29
  30 /*----- Header files ------------------------------------------------------*/
  31
  32 #include <mLib/macros.h>
  33 #include "key-error.h"
  34
  35 /*----- Error reporting ---------------------------------------------------*/
  36
  37 /* --- @key_strerror@ --- *
  38  *
  39  * Arguments:   @int err@ = error code from @key_new@
  40  *
  41  * Returns:     Pointer to error string.
  42  *
  43  * Use:         Translates a @KERR@ error code into a human-readable
  44  *              string.
  45  */
  46
  47 const char *key_strerror(int err)
  48 {
  49   static const char *const tab[] = {
  50 #define ENTRY(tag, num, str) str,
  51     KEY_ERRORS(ENTRY)
  52 #undef ENTRY
  53     "Unknown error code"
  54   };
  55
  56   unsigned e = -err;
  57   if (e >= N(tab))
  58     e = N(tab) - 1;
  59  return (tab[e]);
  60 }
  61
  62 /*----- That's all, folks -------------------------------------------------*/