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Amiga ACS 1998 #6
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error.c
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C/C++ Source or Header
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1998-06-08
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193 lines
/*
THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
SOFTWARE CORPORATION ("PARALLAX"). PARALLAX, IN DISTRIBUTING THE CODE TO
END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
IN USING, DISPLAYING, AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
*/
/*
* $Source: f:/miner/source/misc/rcs/error.c $
* $Revision: 1.12 $
* $Author: matt $
* $Date: 1994/12/07 18:49:39 $
*
* Error handling/printing/exiting code
*
* $Log: error.c $
* Revision 1.12 1994/12/07 18:49:39 matt
* error_init() can now take NULL as parm
*
* Revision 1.11 1994/11/29 15:42:07 matt
* Added newline before error message
*
* Revision 1.10 1994/11/27 23:20:39 matt
* Made changes for new mprintf calling convention
*
* Revision 1.9 1994/06/20 21:20:56 matt
* Allow NULL for warn func, to kill warnings
*
* Revision 1.8 1994/05/20 15:11:35 mike
* mprintf Warning message so you can actually see it.
*
* Revision 1.7 1994/02/10 18:02:38 matt
* Changed 'if DEBUG_ON' to 'ifndef NDEBUG'
*
* Revision 1.6 1993/10/17 18:19:10 matt
* If error_init() not called, Error() now prints the error message before
* calling exit()
*
* Revision 1.5 1993/10/14 15:29:11 matt
* Added new function clear_warn_func()
*
* Revision 1.4 1993/10/08 16:17:19 matt
* Made Assert() call function _Assert(), rather to do 'if...' inline.
*
* Revision 1.3 1993/09/28 12:45:25 matt
* Fixed wrong print call, and made Warning() not append a CR to string
*
* Revision 1.2 1993/09/27 11:46:35 matt
* Added function set_warn_func()
*
* Revision 1.1 1993/09/23 20:17:33 matt
* Initial revision
*
*
*/
#pragma off (unreferenced)
static char rcsid[] = "$Id: error.c 1.12 1994/12/07 18:49:39 matt Exp $";
#pragma on (unreferenced)
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include "mono.h"
#include "error.h"
#define MAX_MSG_LEN 256
int initialized=0;
char exit_message[MAX_MSG_LEN]="";
char warn_message[MAX_MSG_LEN];
//takes string in register, calls printf with string on stack
void warn_printf(char *s)
{
printf("%s\n",s);
}
void (*warn_func)(char *s)=warn_printf;
//provides a function to call with warning messages
void set_warn_func(void (*f)(char *s))
{
warn_func = f;
}
//uninstall warning function - install default printf
void clear_warn_func(void (*f)(char *s))
{
warn_func = warn_printf;
}
void set_exit_message(char *fmt,...)
{
va_list arglist;
int len;
va_start(arglist,fmt);
len = vsprintf(exit_message,fmt,arglist);
va_end(arglist);
if (len==-1 || len>MAX_MSG_LEN) Error("Message too long in set_exit_message (len=%d, max=%d)",len,MAX_MSG_LEN);
}
void _Assert(int expr,char *expr_text,char *filename,int linenum)
{
if (!(expr)) Error("Assertion failed: %s, file %s, line %d",expr_text,filename,linenum);
}
//#ifdef NDEBUG //macros for debugging
//Assert and Int3 Added by KRB because I couldn't get the macros to link
void Assert(int my_expr)
{
//if (!(expr)) Error("Assertion failed: %s, file %s, line %d",expr_text,filename,linenum);
return;
}
void Int3()
{
return;
}
//#endif
void print_exit_message()
{
if (*exit_message)
printf("%s\n",exit_message);
}
//terminates with error code 1, printing message
void Error(char *fmt,...)
{
va_list arglist;
strcpy(exit_message,"\nError: ");
va_start(arglist,fmt);
vsprintf(exit_message+strlen(exit_message),fmt,arglist);
va_end(arglist);
if (!initialized) print_exit_message();
exit(1);
}
//print out warning message to user
void Warning(char *fmt,...)
{
va_list arglist;
if (warn_func == NULL)
return;
strcpy(warn_message,"Warning: ");
va_start(arglist,fmt);
vsprintf(warn_message+strlen(warn_message),fmt,arglist);
va_end(arglist);
mprintf((0, "%s\n", warn_message));
(*warn_func)(warn_message);
}
//initialize error handling system, and set default message. returns 0=ok
int error_init(char *fmt,...)
{
va_list arglist;
int len;
atexit(print_exit_message); //last thing at exit is print message
if (fmt != NULL) {
va_start(arglist,fmt);
len = vsprintf(exit_message,fmt,arglist);
va_end(arglist);
if (len==-1 || len>MAX_MSG_LEN) Error("Message too long in error_init (len=%d, max=%d)",len,MAX_MSG_LEN);
}
initialized=1;
return 0;
}