misc.c revision 80291 
1/*-
2 * Copyright (c) 1990, 1993, 1994
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Cimarron D. Taylor of the University of California, Berkeley.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#ifndef lint
38#if 0
39static char sccsid[] = "@(#)misc.c	8.2 (Berkeley) 4/1/94";
40#else
41static const char rcsid[] =
42  "$FreeBSD: head/usr.bin/find/misc.c 80291 2001-07-24 14:12:05Z obrien $";
43#endif
44#endif /* not lint */
45
46#include <sys/types.h>
47#include <sys/stat.h>
48
49#include <err.h>
50#include <errno.h>
51#include <fts.h>
52#include <stdio.h>
53#include <stdlib.h>
54#include <string.h>
55
56#include "find.h"
57
58/*
59 * brace_subst --
60 *	Replace occurrences of {} in s1 with s2 and return the result string.
61 */
62void
63brace_subst(orig, store, path, len)
64	char *orig, **store, *path;
65	int len;
66{
67	register int plen;
68	register char ch, *p;
69
70	plen = strlen(path);
71	for (p = *store; (ch = *orig) != '\0'; ++orig)
72		if (ch == '{' && orig[1] == '}') {
73			while ((p - *store) + plen > len)
74				if (!(*store = realloc(*store, len *= 2)))
75					err(1, NULL);
76			memmove(p, path, plen);
77			p += plen;
78			++orig;
79		} else
80			*p++ = ch;
81	*p = '\0';
82}
83
84/*
85 * queryuser --
86 *	print a message to standard error and then read input from standard
87 *	input. If the input is 'y' then 1 is returned.
88 */
89int
90queryuser(argv)
91	register char **argv;
92{
93	int ch, first, nl;
94
95	(void)fprintf(stderr, "\"%s", *argv);
96	while (*++argv)
97		(void)fprintf(stderr, " %s", *argv);
98	(void)fprintf(stderr, "\"? ");
99	(void)fflush(stderr);
100
101	first = ch = getchar();
102	for (nl = 0;;) {
103		if (ch == '\n') {
104			nl = 1;
105			break;
106		}
107		if (ch == EOF)
108			break;
109		ch = getchar();
110	}
111
112	if (!nl) {
113		(void)fprintf(stderr, "\n");
114		(void)fflush(stderr);
115	}
116        return (first == 'y');
117}
118