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 * 4. Neither the name of the University nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#ifndef lint
34#if 0
35static char sccsid[] = "@(#)misc.c	8.2 (Berkeley) 4/1/94";
36#else
37#endif
38#endif /* not lint */
39
40#include <sys/cdefs.h>
41__FBSDID("$FreeBSD: src/usr.bin/find/misc.c,v 1.13 2010/12/11 08:32:16 joel Exp $");
42
43#include <sys/types.h>
44#include <sys/stat.h>
45
46#include <err.h>
47#include <errno.h>
48#include <fts.h>
49#include <stdio.h>
50#include <stdlib.h>
51#include <string.h>
52
53#include "find.h"
54
55/*
56 * brace_subst --
57 *	Replace occurrences of {} in s1 with s2 and return the result string.
58 */
59void
60brace_subst(char *orig, char **store, char *path, int len)
61{
62	int plen;
63	char ch, *p;
64
65	plen = strlen(path);
66	for (p = *store; (ch = *orig) != '\0'; ++orig)
67		if (ch == '{' && orig[1] == '}') {
68			while ((p - *store) + plen > len)
69				if (!(*store = realloc(*store, len *= 2)))
70					err(1, NULL);
71			memmove(p, path, plen);
72			p += plen;
73			++orig;
74		} else
75			*p++ = ch;
76	*p = '\0';
77}
78
79/*
80 * queryuser --
81 *	print a message to standard error and then read input from standard
82 *	input. If the input is an affirmative response (according to the
83 *	current locale) then 1 is returned.
84 */
85int
86queryuser(char *argv[])
87{
88	char *p, resp[256];
89
90	(void)fprintf(stderr, "\"%s", *argv);
91	while (*++argv)
92		(void)fprintf(stderr, " %s", *argv);
93	(void)fprintf(stderr, "\"? ");
94	(void)fflush(stderr);
95
96	if (fgets(resp, sizeof(resp), stdin) == NULL)
97		*resp = '\0';
98	if ((p = strchr(resp, '\n')) != NULL)
99		*p = '\0';
100	else {
101		(void)fprintf(stderr, "\n");
102		(void)fflush(stderr);
103	}
104#ifdef __APPLE__
105        return (resp[0] == 'y');
106#else
107        return (rpmatch(resp) == 1);
108#endif
109}
110