1 /* $NetBSD: gets.c,v 1.8 2003/08/07 16:32:27 agc 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 37 gets(buf) 38 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 } 87