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 */
51 void
brace_subst(char * orig,char ** store,char * path,size_t len)52 brace_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 */
87 int
queryuser(char * argv[])88 queryuser(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