/* $NetBSD: tgets.c,v 1.8 2016/06/11 06:22:11 dholland 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 #include #include int tgets(char *buf, size_t size) { int c; int i; char *lp = buf; for (i = 240000; i > 0; i--) { if (lp - buf == size) { lp--; *lp = '\0'; return 0; } c = tgetchar() & 0177; if (c) { for (;;) { switch (c) { case '\n': case '\r': *lp = '\0'; putchar('\n'); return 1; case '\b': case '\177': if (lp > buf) { lp--; putchar('\b'); putchar(' '); putchar('\b'); } break; case '#': if (lp > buf) --lp; break; case 'r' & 037: { char *p; putchar('\n'); for (p = buf; p < lp; ++p) putchar(*p); break; } case '@': case 'u'&037: case 'w'&037: lp = buf; putchar('\n'); break; default: *lp++ = c; putchar(c); } c = getchar() & 0177; } } } return 0; }