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 9GNU Libltdl is free software; you can redistribute it and/or 10modify it under the terms of the GNU Lesser General Public 11License as published by the Free Software Foundation; either 12version 2 of the License, or (at your option) any later version. 13 14As a special exception to the GNU Lesser General Public License, 15if you distribute this file as part of a program or library that 16is built using GNU Libtool, you may include this file under the 17same distribution terms that you use for the rest of that program. 18 19GNU Libltdl is distributed in the hope that it will be useful, 20but WITHOUT ANY WARRANTY; without even the implied warranty of 21MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 22GNU Lesser General Public License for more details. 23 24You should have received a copy of the GNU Lesser General Public 25License along with GNU Libltdl; see the file COPYING.LIB. If not, a 26copy can be downloaded from http://www.gnu.org/licenses/lgpl.html, 27or obtained by writing to the Free Software Foundation, Inc., 2851 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 29*/ 30 31#include "lt__private.h" 32#include "lt_error.h" 33 34static const char *last_error = 0; 35static 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 42static const char **user_error_strings = 0; 43static int errorcount = LT_ERROR_MAX; 44 45int 46lt_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 66int 67lt_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 91const char * 92lt__error_string (int errorcode) 93{ 94 assert (errorcode >= 0); 95 assert (errorcode < LT_ERROR_MAX); 96 97 return error_strings[errorcode]; 98} 99 100const char * 101lt__get_last_error (void) 102{ 103 return last_error; 104} 105 106const char * 107lt__set_last_error (const char *errormsg) 108{ 109 return last_error = errormsg; 110} 111