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Annotation of 43BSDReno/sys/stand/gets.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1988 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution is only permitted until one year after the first shipment
                      6:  * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
                      7:  * binary forms are permitted provided that: (1) source distributions retain
                      8:  * this entire copyright notice and comment, and (2) distributions including
                      9:  * binaries display the following acknowledgement:  This product includes
                     10:  * software developed by the University of California, Berkeley and its
                     11:  * contributors'' in the documentation or other materials provided with the
                     12:  * distribution and in all advertising materials mentioning features or use
                     13:  * of this software.  Neither the name of the University nor the names of
                     14:  * its contributors may be used to endorse or promote products derived from
                     15:  * this software without specific prior written permission.
                     16:  * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     17:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     18:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     19:  *
                     20:  *     @(#)gets.c      7.5 (Berkeley) 6/28/90
                     21:  */
                     22: 
                     23: gets(buf)
                     24:        char *buf;
                     25: {
                     26:        register int c;
                     27:        register char *lp;
                     28: 
                     29:        for (lp = buf;;)
                     30:                switch(c = getchar() & 0177) {
                     31:                case '\n':
                     32:                case '\r':
                     33:                        *lp = '\0';
                     34:                        return;
                     35:                case '\b':
                     36:                case '\177':
                     37:                        if (lp > buf) {
                     38:                                lp--;
                     39:                                putchar('\b');
                     40:                                putchar(' ');
                     41:                                putchar('\b');
                     42:                        }
                     43:                        break;
                     44:                case '#':
                     45:                        if (lp > buf)
                     46:                                --lp;
                     47:                        break;
                     48:                case 'r'&037: {
                     49:                        register char *p;
                     50: 
                     51:                        putchar('\n');
                     52:                        for (p = buf; p < lp; ++p)
                     53:                                putchar(*p);
                     54:                        break;
                     55:                }
                     56:                case '@':
                     57:                case 'u'&037:
                     58:                case 'w'&037:
                     59:                        lp = buf;
                     60:                        putchar('\n');
                     61:                        break;
                     62:                default:
                     63:                        *lp++ = c;
                     64:                }
                     65:        /*NOTREACHED*/
                     66: }

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