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 * %sccs.include.redist.c%
9 */
10
11 #ifndef lint
12 static char sccsid[] = "@(#)misc.c 8.2 (Berkeley) 04/01/94";
13 #endif /* not lint */
14
15 #include <sys/types.h>
16 #include <sys/stat.h>
17
18 #include <err.h>
19 #include <errno.h>
20 #include <fts.h>
21 #include <stdio.h>
22 #include <stdlib.h>
23 #include <string.h>
24
25 #include "find.h"
26
27 /*
28 * brace_subst --
29 * Replace occurrences of {} in s1 with s2 and return the result string.
30 */
31 void
brace_subst(orig,store,path,len)32 brace_subst(orig, store, path, len)
33 char *orig, **store, *path;
34 int len;
35 {
36 register int plen;
37 register char ch, *p;
38
39 plen = strlen(path);
40 for (p = *store; (ch = *orig) != '\0'; ++orig)
41 if (ch == '{' && orig[1] == '}') {
42 while ((p - *store) + plen > len)
43 if (!(*store = realloc(*store, len *= 2)))
44 err(1, NULL);
45 memmove(p, path, plen);
46 p += plen;
47 ++orig;
48 } else
49 *p++ = ch;
50 *p = '\0';
51 }
52
53 /*
54 * queryuser --
55 * print a message to standard error and then read input from standard
56 * input. If the input is 'y' then 1 is returned.
57 */
58 int
queryuser(argv)59 queryuser(argv)
60 register char **argv;
61 {
62 int ch, first, nl;
63
64 (void)fprintf(stderr, "\"%s", *argv);
65 while (*++argv)
66 (void)fprintf(stderr, " %s", *argv);
67 (void)fprintf(stderr, "\"? ");
68 (void)fflush(stderr);
69
70 first = ch = getchar();
71 for (nl = 0;;) {
72 if (ch == '\n') {
73 nl = 1;
74 break;
75 }
76 if (ch == EOF)
77 break;
78 ch = getchar();
79 }
80
81 if (!nl) {
82 (void)fprintf(stderr, "\n");
83 (void)fflush(stderr);
84 }
85 return (first == 'y');
86 }
87
88 /*
89 * emalloc --
90 * malloc with error checking.
91 */
92 void *
emalloc(len)93 emalloc(len)
94 u_int len;
95 {
96 void *p;
97
98 if ((p = malloc(len)) == NULL)
99 err(1, NULL);
100 return (p);
101 }
102