/* $OpenBSD: getln.c,v 1.1 2015/11/16 19:33:52 miod Exp $ */ /* $NetBSD: gets.c,v 1.5.2.1 1995/10/13 19:54:26 pk Exp $ */ /*- * Copyright (c) 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)gets.c 8.1 (Berkeley) 6/11/93 */ #include "stand.h" void getln(char *buf, size_t bufsiz) { int c; char *lp, *ep; if (bufsiz == 0) return; ep = buf + bufsiz - 1; for (lp = buf; ;) switch (c = getchar() & 0177) { case '\n': case '\r': *lp = '\0'; putchar('\n'); return; case '\b': case '\177': if (lp > buf) { lp--; putchar('\b'); putchar(' '); putchar('\b'); } break; #if HASH_ERASE case '#': if (lp > buf) --lp; break; #endif case 'r' & 037: { char *p; putchar('\n'); for (p = buf; p < lp; ++p) putchar(*p); break; } #if AT_ERASE case '@': #endif case 'u' & 037: case 'w' & 037: lp = buf; putchar('\n'); break; default: if (lp != ep) *lp++ = c; putchar(c); } /*NOTREACHED*/ }