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gets.c revision 1.4.2.2 
      1  1.4.2.2  brezak /*-
      2  1.4.2.2  brezak  * Copyright (c) 1993
      3  1.4.2.2  brezak  *	The Regents of the University of California.  All rights reserved.
      4  1.4.2.2  brezak  *
      5  1.4.2.2  brezak  * Redistribution and use in source and binary forms, with or without
      6  1.4.2.2  brezak  * modification, are permitted provided that the following conditions
      7  1.4.2.2  brezak  * are met:
      8  1.4.2.2  brezak  * 1. Redistributions of source code must retain the above copyright
      9  1.4.2.2  brezak  *    notice, this list of conditions and the following disclaimer.
     10  1.4.2.2  brezak  * 2. Redistributions in binary form must reproduce the above copyright
     11  1.4.2.2  brezak  *    notice, this list of conditions and the following disclaimer in the
     12  1.4.2.2  brezak  *    documentation and/or other materials provided with the distribution.
     13  1.4.2.2  brezak  * 3. All advertising materials mentioning features or use of this software
     14  1.4.2.2  brezak  *    must display the following acknowledgement:
     15  1.4.2.2  brezak  *	This product includes software developed by the University of
     16  1.4.2.2  brezak  *	California, Berkeley and its contributors.
     17  1.4.2.2  brezak  * 4. Neither the name of the University nor the names of its contributors
     18  1.4.2.2  brezak  *    may be used to endorse or promote products derived from this software
     19  1.4.2.2  brezak  *    without specific prior written permission.
     20  1.4.2.2  brezak  *
     21  1.4.2.2  brezak  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  1.4.2.2  brezak  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  1.4.2.2  brezak  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  1.4.2.2  brezak  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  1.4.2.2  brezak  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  1.4.2.2  brezak  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  1.4.2.2  brezak  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  1.4.2.2  brezak  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  1.4.2.2  brezak  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  1.4.2.2  brezak  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  1.4.2.2  brezak  * SUCH DAMAGE.
     32  1.4.2.2  brezak  *
     33  1.4.2.2  brezak  *	from: @(#)gets.c	8.1 (Berkeley) 6/11/93
     34  1.4.2.2  brezak  *	     $Id: gets.c,v 1.4.2.2 1994/08/22 21:56:08 brezak Exp $
     35  1.4.2.2  brezak  */
     36  1.4.2.2  brezak 
     37  1.4.2.2  brezak #include "stand.h"
     38  1.4.2.2  brezak 
     39  1.4.2.2  brezak void
     40  1.4.2.2  brezak gets(buf)
     41  1.4.2.2  brezak 	char *buf;
     42  1.4.2.2  brezak {
     43  1.4.2.2  brezak 	register int c;
     44  1.4.2.2  brezak 	register char *lp;
     45  1.4.2.2  brezak 
     46  1.4.2.2  brezak 	for (lp = buf;;)
     47  1.4.2.2  brezak 		switch (c = getchar() & 0177) {
     48  1.4.2.2  brezak 		case '\n':
     49  1.4.2.2  brezak 		case '\r':
     50  1.4.2.2  brezak 			*lp = '\0';
     51  1.4.2.2  brezak 			putchar('\n');
     52  1.4.2.2  brezak 			return;
     53  1.4.2.2  brezak 		case '\b':
     54  1.4.2.2  brezak 		case '\177':
     55  1.4.2.2  brezak 			if (lp > buf) {
     56  1.4.2.2  brezak 				lp--;
     57  1.4.2.2  brezak 				putchar('\b');
     58  1.4.2.2  brezak 				putchar(' ');
     59  1.4.2.2  brezak 				putchar('\b');
     60  1.4.2.2  brezak 			}
     61  1.4.2.2  brezak 			break;
     62  1.4.2.2  brezak 		case '#':
     63  1.4.2.2  brezak 			if (lp > buf)
     64  1.4.2.2  brezak 				--lp;
     65  1.4.2.2  brezak 			break;
     66  1.4.2.2  brezak 		case 'r'&037: {
     67  1.4.2.2  brezak 			register char *p;
     68  1.4.2.2  brezak 
     69  1.4.2.2  brezak 			putchar('\n');
     70  1.4.2.2  brezak 			for (p = buf; p < lp; ++p)
     71  1.4.2.2  brezak 				putchar(*p);
     72  1.4.2.2  brezak 			break;
     73  1.4.2.2  brezak 		}
     74  1.4.2.2  brezak 		case '@':
     75  1.4.2.2  brezak 		case 'u'&037:
     76  1.4.2.2  brezak 		case 'w'&037:
     77  1.4.2.2  brezak 			lp = buf;
     78  1.4.2.2  brezak 			putchar('\n');
     79  1.4.2.2  brezak 			break;
     80  1.4.2.2  brezak 		default:
     81  1.4.2.2  brezak 			*lp++ = c;
     82  1.4.2.2  brezak 			putchar(c);
     83  1.4.2.2  brezak 		}
     84  1.4.2.2  brezak 	/*NOTREACHED*/
     85  1.4.2.2  brezak }
     86