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

   1 /* -*-c-*-
   2  *
   3  * Translating key error codes into strings
   4  *
   5  * (c) 2000 Straylight/Edgeware
   6  */
   7
   8 /*----- Licensing notice --------------------------------------------------*
   9  *
  10  * This file is part of Catacomb.
  11  *
  12  * Catacomb is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU Library General Public License as
  14  * published by the Free Software Foundation; either version 2 of the
  15  * License, or (at your option) any later version.
  16  *
  17  * Catacomb 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 Library General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU Library General Public
  23  * License along with Catacomb; if not, write to the Free
  24  * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
  25  * MA 02111-1307, USA.
  26  */
  27
  28 /*----- Header files ------------------------------------------------------*/
  29
  30 #include <mLib/macros.h>
  31 #include "key-error.h"
  32
  33 /*----- Error reporting ---------------------------------------------------*/
  34
  35 /* --- @key_strerror@ --- *
  36  *
  37  * Arguments:   @int err@ = error code from @key_new@
  38  *
  39  * Returns:     Pointer to error string.
  40  *
  41  * Use:         Translates a @KERR@ error code into a human-readable
  42  *              string.
  43  */
  44
  45 const char *key_strerror(int err)
  46 {
  47   static const char *const tab[] = {
  48 #define ENTRY(tag, num, str) str,
  49     KEY_ERRORS(ENTRY)
  50 #undef ENTRY
  51     "Unknown error code"
  52   };
  53
  54   unsigned e = -err;
  55   if (e >= N(tab))
  56     e = N(tab) - 1;
  57  return (tab[e]);
  58 }
  59
  60 /*----- That's all, folks -------------------------------------------------*/