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/***********************************************************************/
/* trace.c - Debugging and tracing functions. */
/***********************************************************************/
/*
* THE - The Hessling Editor. A text editor similar to VM/CMS xedit.
* Copyright (C) 1991-2001 Mark Hessling
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to:
*
* The Free Software Foundation, Inc.
* 675 Mass Ave,
* Cambridge, MA 02139 USA.
*
*
* If you make modifications to this software that you feel increases
* it usefulness for the rest of the community, please email the
* changes, enhancements, bug fixes as well as any and all ideas to me.
* This software is going to be maintained and enhanced as deemed
* necessary by the community.
*
* Mark Hessling, M.Hessling@qut.edu.au http://www.lightlink.com/hessling/
*/
static char RCSid[] = "$Id: trace.c,v 1.3 2001/12/18 08:23:27 mark Exp $";
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <time.h>
#ifdef HAVE_PROTO
void trace_initialise(void);
void trace_function(char *);
void trace_return(void);
void trace_string(char *,...);
void trace_constant(char *);
#else
void trace_initialise(/* void */);
void trace_function(/* char* */);
void trace_return(/* void */);
void trace_string(/* char*,... */);
void trace_constant(/* char * */);
#endif
/*--------------------------- global data -----------------------------*/
static char trace_save_str[40];
static char trace_env[40];
static FILE *trace_fp;
static short trace_number=0,trace_level=(-1);
/***********************************************************************/
#ifdef HAVE_PROTO
void trace_initialise(void)
#else
void trace_initialise()
#endif
/***********************************************************************/
{
/*--------------------------- local data ------------------------------*/
char *trace_env_ptr=getenv("THE_TRACE");
/*--------------------------- processing ------------------------------*/
trace_fp = NULL;
if (trace_env_ptr == NULL)
return;
strcpy(trace_env,trace_env_ptr);
trace_number = trace_level = 0;
strcpy(trace_save_str,"");
return;
}
/***********************************************************************/
#ifdef HAVE_PROTO
void trace_function(char *trace_str)
#else
void trace_function(trace_str)
char *trace_str;
#endif
/***********************************************************************/
{
/*--------------------------- local data ------------------------------*/
register int i;
time_t timer;
struct tm *tblock=NULL;
/*--------------------------- processing ------------------------------*/
if (trace_level == (-1))
return;
trace_level++;
trace_fp = fopen(trace_env,"a");
for (i=0;i<trace_level;i++)
fprintf(trace_fp," ");
fprintf(trace_fp,"(%d)%-s",trace_level,trace_str);
for (i=0;i<100-(trace_level*2)-strlen(trace_str);i++)
fprintf(trace_fp," ");
timer = time(NULL);
tblock = localtime(&timer);
fprintf(trace_fp,"%2d:%2d:%2d\n",tblock->tm_hour,tblock->tm_min,tblock->tm_sec);
fclose(trace_fp);
return;
}
/***********************************************************************/
#ifdef HAVE_PROTO
void trace_return(void)
#else
void trace_return()
#endif
/***********************************************************************/
{
/*--------------------------- local data ------------------------------*/
/*--------------------------- processing ------------------------------*/
if (trace_level == (-1))
return;
trace_level--;
if (trace_level < 0)
fprintf(trace_fp,"****** trace level below zero ********");
return;
}
/***********************************************************************/
#ifdef HAVE_PROTO
void trace_string(char *fmt,...)
#else
void trace_string(fmt)
char *fmt;
#endif
/***********************************************************************/
{
/*--------------------------- local data ------------------------------*/
va_list args;
/*--------------------------- processing ------------------------------*/
va_start(args,fmt);
trace_fp = fopen(trace_env,"a");
if (trace_fp == NULL)
{
va_end(args);
return;
}
vfprintf(trace_fp,fmt,args);
fclose(trace_fp);
va_end(args);
return;
}
/***********************************************************************/
#ifdef HAVE_PROTO
void trace_constant(char *str)
#else
void trace_constant(str)
char *str;
#endif
/***********************************************************************/
{
/*--------------------------- local data ------------------------------*/
/*--------------------------- processing ------------------------------*/
trace_fp = fopen(trace_env,"a");
if (trace_fp == NULL)
return;
fprintf(trace_fp,"%s",str);
fclose(trace_fp);
return;
}
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