1 /* $NetBSD: misc.c,v 1.14 2006/10/11 19:51:10 apb Exp $ */
2
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/cdefs.h>
36 #ifndef lint
37 #if 0
38 static char sccsid[] = "from: @(#)misc.c 8.2 (Berkeley) 4/1/94";
39 #else
40 __RCSID("$NetBSD: misc.c,v 1.14 2006/10/11 19:51:10 apb Exp $");
41 #endif
42 #endif /* not lint */
43
44 #include <sys/types.h>
45 #include <sys/stat.h>
46
47 #include <err.h>
48 #include <errno.h>
49 #include <fts.h>
50 #include <stdio.h>
51 #include <stdlib.h>
52 #include <string.h>
53 #include <unistd.h>
54
55 #include "find.h"
56
57 /*
58 * brace_subst --
59 * Replace occurrences of {} in orig with path, and place it in a malloced
60 * area of memory set in store.
61 */
62 void
brace_subst(char * orig,char ** store,char * path,int * len)63 brace_subst(char *orig, char **store, char *path, int *len)
64 {
65 int nlen, plen, rest;
66 char ch, *p, *ostore;
67
68 plen = strlen(path);
69 for (p = *store; (ch = *orig) != '\0'; ++orig)
70 if (ch == '{' && orig[1] == '}') {
71 /* Length of string after the {}. */
72 rest = strlen(&orig[2]);
73
74 nlen = *len;
75 while ((p - *store) + plen + rest + 1 > nlen)
76 nlen *= 2;
77
78 if (nlen > *len) {
79 ostore = *store;
80 if ((*store = realloc(ostore, nlen)) == NULL)
81 err(1, "realloc");
82 *len = nlen;
83 p += *store - ostore; /* Relocate. */
84 }
85 memmove(p, path, plen);
86 p += plen;
87 ++orig;
88 } else
89 *p++ = ch;
90 *p = '\0';
91 }
92
93 /*
94 * queryuser --
95 * print a message to standard error and then read input from standard
96 * input. If the input is 'y' then 1 is returned.
97 */
98 int
queryuser(char ** argv)99 queryuser(char **argv)
100 {
101 int ch, first, nl;
102
103 (void)fprintf(stderr, "\"%s", *argv);
104 while (*++argv)
105 (void)fprintf(stderr, " %s", *argv);
106 (void)fprintf(stderr, "\"? ");
107 (void)fflush(stderr);
108
109 first = ch = getchar();
110 for (nl = 0;;) {
111 if (ch == '\n') {
112 nl = 1;
113 break;
114 }
115 if (ch == EOF)
116 break;
117 ch = getchar();
118 }
119
120 if (!nl) {
121 (void)fprintf(stderr, "\n");
122 (void)fflush(stderr);
123 }
124 return (first == 'y');
125 }
126
127 /*
128 * show_path --
129 * called on SIGINFO
130 */
131 /* ARGSUSED */
132 void
show_path(int sig)133 show_path(int sig)
134 {
135 extern FTSENT *g_entry;
136 int errno_bak;
137
138 if (g_entry == NULL) {
139 /*
140 * not initialized yet.
141 * assumption: pointer assignment is atomic.
142 */
143 return;
144 }
145
146 errno_bak = errno;
147 write(STDERR_FILENO, "find path: ", 11);
148 write(STDERR_FILENO, g_entry->fts_path, g_entry->fts_pathlen);
149 write(STDERR_FILENO, "\n", 1);
150 errno = errno_bak;
151 }
152