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/***************************************************************************
* COPYRIGHT NOTICE *
****************************************************************************
* ncurses is copyright (C) 1992-1995 *
* Zeyd M. Ben-Halim *
* zmbenhal@netcom.com *
* Eric S. Raymond *
* esr@snark.thyrsus.com *
* *
* Permission is hereby granted to reproduce and distribute ncurses *
* by any means and for any fee, whether alone or as part of a *
* larger distribution, in source or in binary form, PROVIDED *
* this notice is included with any such distribution, and is not *
* removed from any of its header files. Mention of ncurses in any *
* applications linked with it is highly appreciated. *
* *
* ncurses comes AS IS with no warranty, implied or expressed. *
* *
***************************************************************************/
/*
* lib_trace.c - Tracing/Debugging routines
*/
#ifndef TRACE
#define TRACE /* turn on internal defs for this module */
#endif
#include "curses.priv.h"
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#if HAVE_FCNTL_H
#include <fcntl.h>
#endif
unsigned _nc_tracing = 0;
char *_nc_tputs_trace;
static int tracefd = 2; /* default to writing to stderr */
void trace(const unsigned int tracelevel)
{
static bool been_here = FALSE;
if (! been_here && tracelevel) {
been_here = TRUE;
if ((tracefd = creat("trace", 0644)) < 0) {
perror("curses: Can't open 'trace' file: ");
exit(1);
}
_tracef("TRACING NCURSES version %s", NCURSES_VERSION);
}
_nc_tracing = tracelevel;
}
char *_nc_visbuf(const char *buf)
/* visibilize a given string */
{
static char vbuf[BUFSIZ];
char *tp = vbuf;
if (buf == (char *)NULL)
return("(null)");
while (*buf) {
if (is7bits(*buf) && (isgraph(*buf) || *buf == ' '))
*tp++ = *buf++;
else if (*buf == '\n') {
*tp++ = '\\'; *tp++ = 'n';
buf++;
}
else if (*buf == '\r') {
*tp++ = '\\'; *tp++ = 'r';
buf++;
} else if (*buf == '\b') {
*tp++ = '\\'; *tp++ = 'b';
buf++;
} else if (*buf == '\033') {
*tp++ = '\\'; *tp++ = 'e';
buf++;
} else if (is7bits(*buf) && iscntrl(*buf)) {
*tp++ = '\\'; *tp++ = '^'; *tp++ = '@' + *buf;
buf++;
} else {
sprintf(tp, "\\0x%02x", *buf++);
tp += strlen(tp);
}
}
*tp++ = '\0';
return(vbuf);
}
void
_tracef(const char *fmt, ...)
{
va_list ap;
char buffer[BUFSIZ];
if (_nc_tracing) {
va_start(ap, fmt);
vsprintf(buffer, fmt, ap);
write(tracefd, buffer, strlen(buffer));
write(tracefd, "\n", 1);
}
}
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