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Annotation of gforth/libltdl/lt_error.c, revision 1.1

1.1     ! anton       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: }