1 /* $OpenBSD: getln.c,v 1.1 2015/11/16 19:33:52 miod 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 getln(char *buf, size_t bufsiz) 39 { 40 int c; 41 char *lp, *ep; 42 43 if (bufsiz == 0) 44 return; 45 ep = buf + bufsiz - 1; 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 { 71 char *p; 72 73 putchar('\n'); 74 for (p = buf; p < lp; ++p) 75 putchar(*p); 76 break; 77 } 78 #if AT_ERASE 79 case '@': 80 #endif 81 case 'u' & 037: 82 case 'w' & 037: 83 lp = buf; 84 putchar('\n'); 85 break; 86 default: 87 if (lp != ep) 88 *lp++ = c; 89 putchar(c); 90 } 91 /*NOTREACHED*/ 92 } 93