root/libltdl/lt_error.c

/* */

DEFINITIONS

1. lt_dladderror
2. lt_dlseterror
3. lt__error_string
4. lt__get_last_error
5. lt__set_last_error

   1 /* lt_error.c -- error propogation interface
   2 
   3    Copyright (C) 1999, 2000, 2001, 2004, 2005, 2007 Free Software Foundation, Inc.
   4    Written by Thomas Tanner, 1999
   5 
   6    NOTE: The canonical source of this file is maintained with the
   7    GNU Libtool package.  Report bugs to bug-libtool@gnu.org.
   8 
   9 GNU Libltdl is free software; you can redistribute it and/or
  10 modify it under the terms of the GNU Lesser General Public
  11 License as published by the Free Software Foundation; either
  12 version 2 of the License, or (at your option) any later version.
  13 
  14 As a special exception to the GNU Lesser General Public License,
  15 if you distribute this file as part of a program or library that
  16 is built using GNU Libtool, you may include this file under the
  17 same distribution terms that you use for the rest of that program.
  18 
  19 GNU Libltdl 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 Lesser General Public License for more details.
  23 
  24 You should have received a copy of the GNU Lesser General Public
  25 License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
  26 copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
  27 or obtained by writing to the Free Software Foundation, Inc.,
  28 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  29 */
  30 
  31 #include "lt__private.h"
  32 #include "lt_error.h"
  33 
  34 static const char       *last_error     = 0;
  35 static const char       error_strings[LT_ERROR_MAX][LT_ERROR_LEN_MAX + 1] =
  36   {
  37 #define LT_ERROR(name, diagnostic)      diagnostic,
  38     lt_dlerror_table
  39 #undef LT_ERROR
  40   };
  41 
  42 static  const char    **user_error_strings      = 0;
  43 static  int             errorcount              = LT_ERROR_MAX;
  44 
  45 int
  46 lt_dladderror (const char *diagnostic)
  47 {
  48   int           errindex = 0;
  49   int           result   = -1;
  50   const char  **temp     = (const char **) 0;
  51 
  52   assert (diagnostic);
  53 
  54   errindex = errorcount - LT_ERROR_MAX;
  55   temp = REALLOC (const char *, user_error_strings, 1 + errindex);
  56   if (temp)
  57     {
  58       user_error_strings                = temp;
  59       user_error_strings[errindex]      = diagnostic;
  60       result                            = errorcount++;
  61     }
  62 
  63   return result;
  64 }
  65 
  66 int
  67 lt_dlseterror (int errindex)
  68 {
  69   int           errors   = 0;
  70 
  71   if (errindex >= errorcount || errindex < 0)
  72     {
  73       /* Ack!  Error setting the error message! */
  74       LT__SETERROR (INVALID_ERRORCODE);
  75       ++errors;
  76     }
  77   else if (errindex < LT_ERROR_MAX)
  78     {
  79       /* No error setting the error message! */
  80       LT__SETERRORSTR (error_strings[errindex]);
  81     }
  82   else
  83     {
  84       /* No error setting the error message! */
  85       LT__SETERRORSTR (user_error_strings[errindex - LT_ERROR_MAX]);
  86     }
  87 
  88   return errors;
  89 }
  90 
  91 const char *
  92 lt__error_string (int errorcode)
  93 {
  94   assert (errorcode >= 0);
  95   assert (errorcode < LT_ERROR_MAX);
  96 
  97   return error_strings[errorcode];
  98 }
  99 
 100 const char *
 101 lt__get_last_error (void)
 102 {
 103   return last_error;
 104 }
 105 
 106 const char *
 107 lt__set_last_error (const char *errormsg)
 108 {
 109   return last_error = errormsg;
 110 }

/* */