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 #if 0
36 static char sccsid[] = "@(#)misc.c 8.2 (Berkeley) 4/1/94";
37 #endif
38
39 #include <sys/cdefs.h>
40 __FBSDID("$FreeBSD$");
41
42 #include <sys/types.h>
43 #include <sys/stat.h>
44
45 #include <err.h>
46 #include <errno.h>
47 #include <fts.h>
48 #include <stdio.h>
49 #include <stdlib.h>
50 #include <string.h>
51
52 #include "find.h"
53
54 /*
55 * brace_subst --
56 * Replace occurrences of {} in s1 with s2 and return the result string.
57 */
58 void
brace_subst(char * orig,char ** store,char * path,size_t len)59 brace_subst(char *orig, char **store, char *path, size_t len)
60 {
61 const char *pastorigend, *p, *q;
62 char *dst;
63 size_t newlen, plen;
64
65 plen = strlen(path);
66 newlen = strlen(orig) + 1;
67 pastorigend = orig + newlen;
68 for (p = orig; (q = strstr(p, "{}")) != NULL; p = q + 2) {
69 if (plen > 2 && newlen + plen - 2 < newlen)
70 errx(2, "brace_subst overflow");
71 newlen += plen - 2;
72 }
73 if (newlen > len) {
74 *store = reallocf(*store, newlen);
75 if (*store == NULL)
76 err(2, NULL);
77 }
78 dst = *store;
79 for (p = orig; (q = strstr(p, "{}")) != NULL; p = q + 2) {
80 memcpy(dst, p, q - p);
81 dst += q - p;
82 memcpy(dst, path, plen);
83 dst += plen;
84 }
85 memcpy(dst, p, pastorigend - p);
86 }
87
88 /*
89 * queryuser --
90 * print a message to standard error and then read input from standard
91 * input. If the input is an affirmative response (according to the
92 * current locale) then 1 is returned.
93 */
94 int
queryuser(char * argv[])95 queryuser(char *argv[])
96 {
97 char *p, resp[256];
98
99 (void)fprintf(stderr, "\"%s", *argv);
100 while (*++argv)
101 (void)fprintf(stderr, " %s", *argv);
102 (void)fprintf(stderr, "\"? ");
103 (void)fflush(stderr);
104
105 if (fgets(resp, sizeof(resp), stdin) == NULL)
106 *resp = '\0';
107 if ((p = strchr(resp, '\n')) != NULL)
108 *p = '\0';
109 else {
110 (void)fprintf(stderr, "\n");
111 (void)fflush(stderr);
112 }
113 return (rpmatch(resp) == 1);
114 }
115