1: /*      $NetBSD: getinp.c,v 1.13 2004/11/05 21:30:32 dsl 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. 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: 
   32: #include <sys/cdefs.h>
   33: #ifndef lint
   34: #if 0
   35: static char sccsid[] = "@(#)getinp.c    8.1 (Berkeley) 5/31/93";
   36: #else
   37: __RCSID("$NetBSD: getinp.c,v 1.13 2004/11/05 21:30:32 dsl Exp $");
   38: #endif
   39: #endif /* not lint */
   40: 
   41: #include <stdio.h>
   42: #include <string.h>
   43: #include <ctype.h>
   44: #include "monop.ext"
   45: 
   46: #define LINE    70
   47: 
   48: static char     buf[257];
   49: 
   50: static int comp(const char *);
   51: 
   52: int
   53: getinp(prompt, list)
   54:         const char *prompt, *const list[]; 
   55: {
   56:         int i, n_match, match = 0;
   57:         char *sp;
   58:         int c;
   59: 
   60:         for (;;) {
   61: inter:
   62:                 printf("%s", prompt);
   63:                 for (sp = buf; (c=getchar()) != '\n'; ) {
   64:                         *sp = c;
   65:                         if (c == -1) /* check for interrupted system call */
   66:                                 goto inter;
   67:                         else if (sp != buf || *sp != ' ')
   68:                                 sp++;
   69:                 }
   70:                 *sp = c;
   71:                 if (buf[0] == '?' && buf[1] == '\n') {
   72:                         printf("Valid inputs are: ");
   73:                         for (i = 0, match = 18; list[i]; i++) {
   74:                                 if ((match+=(n_match=strlen(list[i]))) > LINE) {
   75:                                         printf("\n\t");
   76:                                         match = n_match + 8;
   77:                                 }
   78:                                 if (*list[i] == '\0') {
   79:                                         match += 8;
   80:                                         printf("<RETURN>");
   81:                                 }
   82:                                 else
   83:                                         printf("%s", list[i]);
   84:                                 if (list[i+1])
   85:                                         printf(", ");
   86:                                 else
   87:                                         putchar('\n');
   88:                                 match += 2;
   89:                         }
   90:                         continue;
   91:                 }
   92:                 *sp = '\0';
   93:                 for (sp = buf; *sp; sp++)
   94:                         *sp = tolower((unsigned char)*sp);
   95:                 for (i = n_match = 0; list[i]; i++)
   96:                         if (comp(list[i])) {
   97:                                 n_match++;
   98:                                 match = i;
   99:                         }
  100:                 if (n_match == 1)
  101:                         return match;
  102:                 else if (buf[0] != '\0')
  103:                         printf("Illegal response: \"%s\".  "
  104:                             "Use '?' to get list of valid answers\n", buf);
  105:         }
  106: }
  107: 
  108: static int
  109: comp(s1)
  110:         const char *s1;
  111: {
  112:         const char *sp, *tsp;
  113:         char c;
  114: 
  115:         if (buf[0] != '\0')
  116:                 for (sp = buf, tsp = s1; *sp; ) {
  117:                         c = tolower((unsigned char)*tsp);
  118:                         tsp++;
  119:                         if (c != *sp++)
  120:                                 return 0;
  121:                 }
  122:         else if (*s1 != '\0')
  123:                 return 0;
  124:         return 1;
  125: }