1 /* $OpenBSD: gets.c,v 1.4 2003/08/11 06:23:09 deraadt Exp $ */
2 /* $NetBSD: gets.c,v 1.5.2.1 1995/10/13 19:54:26 pk Exp $ */
3
4 /*-
5 * Copyright (c) 1993
6 * The Regents of the University of California. All rights reserved.
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. 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 * @(#)gets.c 8.1 (Berkeley) 6/11/93
33 */
34
35 #include "stand.h"
36
37 void
38 gets(char *buf)
39 {
40 int c;
41 char *lp;
42
43 for (lp = buf;;)
44 switch (c = getchar() & 0177) {
45 case '\n':
46 case '\r':
47 *lp = '\0';
48 putchar('\n');
49 return;
50 case '\b':
51 case '\177':
52 if (lp > buf) {
53 lp--;
54 putchar('\b');
55 putchar(' ');
56 putchar('\b');
57 }
58 break;
59 #if HASH_ERASE
60 case '#':
61 if (lp > buf)
62 --lp;
63 break;
64 #endif
65 case 'r'&037: {
66 char *p;
67
68 putchar('\n');
69 for (p = buf; p < lp; ++p)
70 putchar(*p);
71 break;
72 }
73 #if AT_ERASE
74 case '@':
75 #endif
76 case 'u'&037:
77 case 'w'&037:
78 lp = buf;
79 putchar('\n');
80 break;
81 default:
82 *lp++ = c;
83 putchar(c);
84 }
85 /*NOTREACHED*/
86 }