xref: /freebsd/usr.bin/find/misc.c (revision cc16dea626cf2fc80cde667ac4798065108e596c)
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
35 static 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("$FreeBSD$");
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  */
59 void
60 brace_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  */
85 int
86 queryuser(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         return (rpmatch(resp) == 1);
105 }
106