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Annotation of sys/lib/libsa/gets.c, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: gets.c,v 1.4 2003/08/11 06:23:09 deraadt 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: gets(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: }