1 /* $Id: error.c,v 1.3 2002-08-02 11:05:26 btb Exp $ */
3 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
4 SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
5 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
6 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
7 IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
8 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
9 FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
10 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
11 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
12 COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
16 * Error handling/printing/exiting code
19 * Revision 1.12 1994/12/07 18:49:39 matt
20 * error_init() can now take NULL as parm
22 * Revision 1.11 1994/11/29 15:42:07 matt
23 * Added newline before error message
25 * Revision 1.10 1994/11/27 23:20:39 matt
26 * Made changes for new mprintf calling convention
28 * Revision 1.9 1994/06/20 21:20:56 matt
29 * Allow NULL for warn func, to kill warnings
31 * Revision 1.8 1994/05/20 15:11:35 mike
32 * mprintf Warning message so you can actually see it.
34 * Revision 1.7 1994/02/10 18:02:38 matt
35 * Changed 'if DEBUG_ON' to 'ifndef NDEBUG'
37 * Revision 1.6 1993/10/17 18:19:10 matt
38 * If error_init() not called, Error() now prints the error message before
41 * Revision 1.5 1993/10/14 15:29:11 matt
42 * Added new function clear_warn_func()
44 * Revision 1.4 1993/10/08 16:17:19 matt
45 * Made Assert() call function _Assert(), rather to do 'if...' inline.
47 * Revision 1.3 1993/09/28 12:45:25 matt
48 * Fixed wrong print call, and made Warning() not append a CR to string
50 * Revision 1.2 1993/09/27 11:46:35 matt
51 * Added function set_warn_func()
53 * Revision 1.1 1993/09/23 20:17:33 matt
64 static char rcsid[] = "$Id: error.c,v 1.3 2002-08-02 11:05:26 btb Exp $";
76 #define MAX_MSG_LEN 256
78 //edited 05/17/99 Matt Mueller added err_ prefix to prevent conflicts with statically linking SDL
79 int err_initialized=0;
82 char exit_message[MAX_MSG_LEN]="";
83 char warn_message[MAX_MSG_LEN];
85 //takes string in register, calls printf with string on stack
86 void warn_printf(char *s)
91 void (*warn_func)(char *s)=warn_printf;
93 //provides a function to call with warning messages
94 void set_warn_func(void (*f)(char *s))
99 //uninstall warning function - install default printf
100 void clear_warn_func(void (*f)(char *s))
102 warn_func = warn_printf;
105 void set_exit_message(char *fmt,...)
110 va_start(arglist,fmt);
111 len = vsprintf(exit_message,fmt,arglist);
114 if (len==-1 || len>MAX_MSG_LEN) Error("Message too long in set_exit_message (len=%d, max=%d)",len,MAX_MSG_LEN);
118 void _Assert(int expr,char *expr_text,char *filename,int linenum)
120 if (!(expr)) Error("Assertion failed: %s, file %s, line %d",expr_text,filename,linenum);
124 void print_exit_message(void)
127 con_printf(CON_CRITICAL, "%s\n",exit_message);
130 //terminates with error code 1, printing message
131 void Error(char *fmt,...)
135 strcpy(exit_message,"\nError: ");
137 va_start(arglist,fmt);
138 vsprintf(exit_message+strlen(exit_message),fmt,arglist);
141 con_printf(CON_CRITICAL, exit_message);
146 //print out warning message to user
147 void Warning(char *fmt,...)
151 if (warn_func == NULL)
154 strcpy(warn_message,"Warning: ");
156 va_start(arglist,fmt);
157 vsprintf(warn_message+strlen(warn_message),fmt,arglist);
160 con_printf(CON_URGENT, warn_message);
164 //initialize error handling system, and set default message. returns 0=ok
165 int error_init(char *fmt,...)
170 atexit(print_exit_message); //last thing at exit is print message
173 va_start(arglist,fmt);
174 len = vsprintf(exit_message,fmt,arglist);
176 if (len==-1 || len>MAX_MSG_LEN) Error("Message too long in error_init (len=%d, max=%d)",len,MAX_MSG_LEN);