/* lt_error.c -- error propagation interface

    Copyright (C) 1999-2001, 2004-2005, 2007, 2011-2015 Free Software
    Foundation, Inc.

    Written by Thomas Tanner, 1999
 
    NOTE: The canonical source of this file is maintained with the
    GNU Libtool package.  Report bugs to bug-libtool@gnu.org.
 
 GNU Libltdl is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2 of the License, or (at your option) any later version.
 
 As a special exception to the GNU Lesser General Public License,
 if you distribute this file as part of a program or library that
 is built using GNU Libtool, you may include this file under the
 same distribution terms that you use for the rest of that program.
 
 GNU Libltdl is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 
 You should have received a copy of the GNU Lesser General Public
 License along with GNU Libltdl; see the file COPYING.LIB.  If not, a
 copy can be downloaded from  http://www.gnu.org/licenses/lgpl.html,
 or obtained by writing to the Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
 
 #include "lt__private.h"
 #include "lt_error.h"
 
 static const char	*last_error	= 0;
 static const char	error_strings[LT_ERROR_MAX][LT_ERROR_LEN_MAX + 1] =
   {
 #define LT_ERROR(name, diagnostic)	diagnostic,
     lt_dlerror_table
 #undef LT_ERROR
   };
 
 static	const char    **user_error_strings	= 0;
 static	int		errorcount		= LT_ERROR_MAX;
 
 int
 lt_dladderror (const char *diagnostic)
 {
   int		errindex = 0;
   int		result	 = -1;
   const char  **temp     = (const char **) 0;
 
   assert (diagnostic);
 
   errindex = errorcount - LT_ERROR_MAX;
   temp = REALLOC (const char *, user_error_strings, 1 + errindex);
   if (temp)
     {
       user_error_strings		= temp;
       user_error_strings[errindex]	= diagnostic;
       result				= errorcount++;
     }
 
   return result;
 }
 
 int
 lt_dlseterror (int errindex)
 {
   int		errors	 = 0;
 
   if (errindex >= errorcount || errindex < 0)
     {
       /* Ack!  Error setting the error message! */
       LT__SETERROR (INVALID_ERRORCODE);
       ++errors;
     }
   else if (errindex < LT_ERROR_MAX)
     {
       /* No error setting the error message! */
       LT__SETERRORSTR (error_strings[errindex]);
     }
   else
     {
       /* No error setting the error message! */
       LT__SETERRORSTR (user_error_strings[errindex - LT_ERROR_MAX]);
     }
 
   return errors;
 }
 
 const char *
 lt__error_string (int errorcode)
 {
   assert (errorcode >= 0);
   assert (errorcode < LT_ERROR_MAX);
 
   return error_strings[errorcode];
 }
 
 const char *
 lt__get_last_error (void)
 {
   return last_error;
 }
 
 const char *
 lt__set_last_error (const char *errormsg)
 {
   return last_error = errormsg;
 }