monop/getinp.c

   1 /*      $NetBSD: getinp.c,v 1.3 1995/03/23 08:34:39 cgd Exp $   */
   2
   3 /*
   4  * Copyright (c) 1980, 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. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the University of
  18  *      California, Berkeley and its contributors.
  19  * 4. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #ifndef lint
  37 #if 0
  38 static char sccsid[] = "@(#)getinp.c    8.1 (Berkeley) 5/31/93";
  39 #else
  40 static char rcsid[] = "$NetBSD: getinp.c,v 1.3 1995/03/23 08:34:39 cgd Exp $";
  41 #endif
  42 #endif /* not lint */
  43
  44 # include       <stdio.h>
  45 # include       <ctype.h>
  46
  47 # define        reg     register
  48
  49 # define        LINE    70
  50
  51 static char     buf[257];
  52
  53 getinp(prompt, list)
  54 char    *prompt, *list[]; {
  55
  56         reg int i, n_match, match;
  57         char    *sp;
  58         int     plen;
  59         static int comp();
  60
  61         for (;;) {
  62 inter:
  63                 printf(prompt);
  64                 for (sp = buf; (*sp=getchar()) != '\n'; )
  65                         if (*sp == -1)  /* check for interupted system call */
  66                                 goto inter;
  67                         else if (sp != buf || *sp != ' ')
  68                                 sp++;
  69                 if (buf[0] == '?' && buf[1] == '\n') {
  70                         printf("Valid inputs are: ");
  71                         for (i = 0, match = 18; list[i]; i++) {
  72                                 if ((match+=(n_match=strlen(list[i]))) > LINE) {
  73                                         printf("\n\t");
  74                                         match = n_match + 8;
  75                                 }
  76                                 if (*list[i] == '\0') {
  77                                         match += 8;
  78                                         printf("<RETURN>");
  79                                 }
  80                                 else
  81                                         printf(list[i]);
  82                                 if (list[i+1])
  83                                         printf(", ");
  84                                 else
  85                                         putchar('\n');
  86                                 match += 2;
  87                         }
  88                         continue;
  89                 }
  90                 *sp = '\0';
  91                 for (sp = buf; *sp; sp++)
  92                         if (isupper(*sp))
  93                                 *sp = tolower(*sp);
  94                 for (i = n_match = 0; list[i]; i++)
  95                         if (comp(list[i])) {
  96                                 n_match++;
  97                                 match = i;
  98                         }
  99                 if (n_match == 1)
 100                         return match;
 101                 else if (buf[0] != '\0')
 102                         printf("Illegal response: \"%s\".  Use '?' to get list of valid answers\n", buf);
 103         }
 104 }
 105
 106 static
 107 comp(s1)
 108 char    *s1; {
 109
 110         reg char        *sp, *tsp, c;
 111
 112         if (buf[0] != '\0')
 113                 for (sp = buf, tsp = s1; *sp; ) {
 114                         c = isupper(*tsp) ? tolower(*tsp) : *tsp;
 115                         tsp++;
 116                         if (c != *sp++)
 117                                 return 0;
 118                 }
 119         else if (*s1 != '\0')
 120                 return 0;
 121         return 1;
 122 }