1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1990, 1993, 1994
5 *	The Regents of the University of California.  All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Cimarron D. Taylor of the University of California, Berkeley.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include <sys/types.h>
36#include <sys/stat.h>
37
38#include <err.h>
39#include <errno.h>
40#include <fts.h>
41#include <stdio.h>
42#include <stdlib.h>
43#include <string.h>
44
45#include "find.h"
46
47/*
48 * brace_subst --
49 *	Replace occurrences of {} in s1 with s2 and return the result string.
50 */
51void
52brace_subst(char *orig, char **store, char *path, size_t len)
53{
54	const char *pastorigend, *p, *q;
55	char *dst;
56	size_t newlen, plen;
57
58	plen = strlen(path);
59	newlen = strlen(orig) + 1;
60	pastorigend = orig + newlen;
61	for (p = orig; (q = strstr(p, "{}")) != NULL; p = q + 2) {
62		if (plen > 2 && newlen + plen - 2 < newlen)
63			errx(2, "brace_subst overflow");
64		newlen += plen - 2;
65	}
66	if (newlen > len) {
67		*store = reallocf(*store, newlen);
68		if (*store == NULL)
69			err(2, NULL);
70	}
71	dst = *store;
72	for (p = orig; (q = strstr(p, "{}")) != NULL; p = q + 2) {
73		memcpy(dst, p, q - p);
74		dst += q - p;
75		memcpy(dst, path, plen);
76		dst += plen;
77	}
78	memcpy(dst, p, pastorigend - p);
79}
80
81/*
82 * queryuser --
83 *	print a message to standard error and then read input from standard
84 *	input. If the input is an affirmative response (according to the
85 *	current locale) then 1 is returned.
86 */
87int
88queryuser(char *argv[])
89{
90	char *p, resp[256];
91
92	(void)fprintf(stderr, "\"%s", *argv);
93	while (*++argv)
94		(void)fprintf(stderr, " %s", *argv);
95	(void)fprintf(stderr, "\"? ");
96	(void)fflush(stderr);
97
98	if (fgets(resp, sizeof(resp), stdin) == NULL)
99		*resp = '\0';
100	if ((p = strchr(resp, '\n')) != NULL)
101		*p = '\0';
102	else {
103		(void)fprintf(stderr, "\n");
104		(void)fflush(stderr);
105	}
106        return (rpmatch(resp) == 1);
107}
108