misc.c revision 200420 
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 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#ifndef lint
38#if 0
39static char sccsid[] = "@(#)misc.c	8.2 (Berkeley) 4/1/94";
40#else
41#endif
42#endif /* not lint */
43
44#include <sys/cdefs.h>
45__FBSDID("$FreeBSD: head/usr.bin/find/misc.c 200420 2009-12-11 23:35:38Z delphij $");
46
47#include <sys/types.h>
48#include <sys/stat.h>
49
50#include <err.h>
51#include <fts.h>
52#include <stdio.h>
53#include <stdlib.h>
54#include <string.h>
55
56#include "find.h"
57
58/*
59 * brace_subst --
60 *	Replace occurrences of {} in s1 with s2 and return the result string.
61 */
62void
63brace_subst(char *orig, char **store, char *path, int len)
64{
65	int plen;
66	char ch, *p;
67
68	plen = strlen(path);
69	for (p = *store; (ch = *orig) != '\0'; ++orig)
70		if (ch == '{' && orig[1] == '}') {
71			while ((p - *store) + plen > len)
72				if (!(*store = realloc(*store, len *= 2)))
73					err(1, NULL);
74			memmove(p, path, plen);
75			p += plen;
76			++orig;
77		} else
78			*p++ = ch;
79	*p = '\0';
80}
81
82/*
83 * queryuser --
84 *	print a message to standard error and then read input from standard
85 *	input. If the input is an affirmative response (according to the
86 *	current locale) then 1 is returned.
87 */
88int
89queryuser(char *argv[])
90{
91	char *p, resp[256];
92
93	(void)fprintf(stderr, "\"%s", *argv);
94	while (*++argv)
95		(void)fprintf(stderr, " %s", *argv);
96	(void)fprintf(stderr, "\"? ");
97	(void)fflush(stderr);
98
99	if (fgets(resp, sizeof(resp), stdin) == NULL)
100		*resp = '\0';
101	if ((p = strchr(resp, '\n')) != NULL)
102		*p = '\0';
103	else {
104		(void)fprintf(stderr, "\n");
105		(void)fflush(stderr);
106	}
107        return (rpmatch(resp) == 1);
108}
109