1 /* $NetBSD: gets.c,v 1.7 2000/03/30 12:19:48 augustss 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)gets.c 8.1 (Berkeley) 6/11/93 36 */ 37 38 #include "stand.h" 39 40 void 41 gets(buf) 42 char *buf; 43 { 44 int c; 45 char *lp; 46 47 for (lp = buf;;) 48 switch (c = getchar() & 0177) { 49 case '\n': 50 case '\r': 51 *lp = '\0'; 52 putchar('\n'); 53 return; 54 case '\b': 55 case '\177': 56 if (lp > buf) { 57 lp--; 58 putchar('\b'); 59 putchar(' '); 60 putchar('\b'); 61 } 62 break; 63 #if HASH_ERASE 64 case '#': 65 if (lp > buf) 66 --lp; 67 break; 68 #endif 69 case 'r'&037: { 70 char *p; 71 72 putchar('\n'); 73 for (p = buf; p < lp; ++p) 74 putchar(*p); 75 break; 76 } 77 #if AT_ERASE 78 case '@': 79 #endif 80 case 'u'&037: 81 case 'w'&037: 82 lp = buf; 83 putchar('\n'); 84 break; 85 default: 86 *lp++ = c; 87 putchar(c); 88 } 89 /*NOTREACHED*/ 90 } 91