gets.c

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    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 }

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FreeBSD/Linux Kernel Cross Reference sys/lib/libsa/gets.c

FreeBSD/Linux Kernel Cross Reference
sys/lib/libsa/gets.c