1 /* $NetBSD: gets.c,v 1.10 2007/11/24 13:20:55 isaki Exp $ */
2
3 /*-
4 * Copyright (c) 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * @(#)gets.c 8.1 (Berkeley) 6/11/93
32 */
33
34 #include "stand.h"
35
36 void
gets(char * buf)37 gets(char *buf)
38 {
39 int c;
40 char *lp;
41
42 for (lp = buf;;) {
43 switch (c = getchar() & 0177) {
44 case '\n':
45 case '\r':
46 *lp = '\0';
47 putchar('\n');
48 return;
49 case '\b':
50 case '\177':
51 if (lp > buf) {
52 lp--;
53 putchar('\b');
54 putchar(' ');
55 putchar('\b');
56 }
57 break;
58 #if HASH_ERASE
59 case '#':
60 if (lp > buf)
61 --lp;
62 break;
63 #endif
64 case 'r' & 037: {
65 char *p;
66
67 putchar('\n');
68 for (p = buf; p < lp; ++p)
69 putchar(*p);
70 break;
71 }
72 #if AT_ERASE
73 case '@':
74 #endif
75 case 'u' & 037:
76 case 'w' & 037:
77 lp = buf;
78 putchar('\n');
79 break;
80 default:
81 *lp++ = c;
82 putchar(c);
83 break;
84 }
85 }
86 /*NOTREACHED*/
87 }
88