trace.c

来自「ipsec PNE 3.3 source code, running at mo」· C语言 代码 · 共 49 行

/************************************************************************
@author Julian Bromwich
@date April 20, 2004

This allows runtime tracing of function calls.
(see trace.h for documentation)
*************************************************************************/
#define __WRN_DEF_TRACE__

#ifdef __WRN_DEF_TRACE__
#include <stdio.h>

char *traceIndent
    (
    int adjust
    );

int ipsecTraceOn = 0; /* Run-time switch to enable Tracing */
#define MAX_INDENT 80
char indentString [] = "                                                                                 ";
int lastPosition = 0;
int position = 0;

char *traceIndent
    (
    int adjust
    )
    {
    /* Move NULL to new position */
    indentString[lastPosition] = ' ';
    indentString[position] = '\0';

    /* Adjust next position of NULL in indentString */
    if ((position + adjust >= 0) && (position + adjust < MAX_INDENT))
        {
        lastPosition = position;
        position += adjust;
        }

    /* Move NULL to new position right away if negative adjust */
    if (adjust < 0)
        {
        indentString[lastPosition] = ' ';
        indentString[position] = '\0';
        }
    return indentString;
    }
#endif