misc.c revision 200462 
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 200462 2009-12-13 03:14:06Z delphij $");
46
47#include <sys/types.h>
48#include <sys/stat.h>
49
50#include <err.h>
51#include <errno.h>
52#include <fts.h>
53#include <stdio.h>
54#include <stdlib.h>
55#include <string.h>
56
57#include "find.h"
58
59/*
60 * brace_subst --
61 *	Replace occurrences of {} in s1 with s2 and return the result string.
62 */
63void
64brace_subst(char *orig, char **store, char *path, int len)
65{
66	int plen;
67	char ch, *p;
68
69	plen = strlen(path);
70	for (p = *store; (ch = *orig) != '\0'; ++orig)
71		if (ch == '{' && orig[1] == '}') {
72			while ((p - *store) + plen > len)
73				if (!(*store = realloc(*store, len *= 2)))
74					err(1, NULL);
75			memmove(p, path, plen);
76			p += plen;
77			++orig;
78		} else
79			*p++ = ch;
80	*p = '\0';
81}
82
83/*
84 * queryuser --
85 *	print a message to standard error and then read input from standard
86 *	input. If the input is an affirmative response (according to the
87 *	current locale) then 1 is returned.
88 */
89int
90queryuser(char *argv[])
91{
92	char *p, resp[256];
93
94	(void)fprintf(stderr, "\"%s", *argv);
95	while (*++argv)
96		(void)fprintf(stderr, " %s", *argv);
97	(void)fprintf(stderr, "\"? ");
98	(void)fflush(stderr);
99
100	if (fgets(resp, sizeof(resp), stdin) == NULL)
101		*resp = '\0';
102	if ((p = strchr(resp, '\n')) != NULL)
103		*p = '\0';
104	else {
105		(void)fprintf(stderr, "\n");
106		(void)fflush(stderr);
107	}
108        return (rpmatch(resp) == 1);
109}
110