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[unix-history] / lib / libcurses / ctrace.c
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1/*-
2 * Copyright (c) 1992, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35static char sccsid[] = "@(#)ctrace.c 8.2 (Berkeley) 10/5/93";
36#endif /* not lint */
37
38#ifdef DEBUG
39#include <stdio.h>
40
41#ifdef __STDC__
42#include <stdarg.h>
43#else
44#include <varargs.h>
45#endif
46
47#ifndef TFILE
48#define TFILE "__curses.out"
49#endif
50
51static FILE *tracefp; /* Curses debugging file descriptor. */
52
53void
54#ifdef __STDC__
55__CTRACE(const char *fmt, ...)
56#else
57__CTRACE(fmt, va_alist)
58 char *fmt;
59 va_dcl
60#endif
61{
62 va_list ap;
63#ifdef __STDC__
64 va_start(ap, fmt);
65#else
66 va_start(ap);
67#endif
68 if (tracefp == NULL)
69 tracefp = fopen(TFILE, "w");
70 if (tracefp == NULL)
71 return;
72 (void)vfprintf(tracefp, fmt, ap);
73 va_end(ap);
74 (void)fflush(tracefp);
75}
76#endif