1 /* $OpenBSD: getinp.c,v 1.12 2016/01/08 18:20:33 mestre Exp $ */
2 /* $NetBSD: getinp.c,v 1.4 1995/04/24 12:24:20 cgd Exp $ */
3
4 /*
5 * Copyright (c) 1980, 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
33 #include <ctype.h>
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <string.h>
37
38 #include "monop.ext"
39
40 #define LINE 70
41
42 static char buf[257];
43
44 static int comp(char *);
45
46 int
getinp(char * prompt,char * list[])47 getinp(char *prompt, char *list[])
48 {
49 int i, n_match, match;
50 char *sp;
51
52 for (;;) {
53 printf("%s", prompt);
54 fgets(buf, sizeof(buf), stdin);
55 if ((feof(stdin))) {
56 printf("user closed input stream, quitting...\n");
57 exit(0);
58 }
59 if (buf[0] == '?' /* && buf[1] == '\n' */ ) {
60 printf("Valid inputs are: ");
61 for (i = 0, match = 18; list[i]; i++) {
62 if ((match += (n_match = strlen(list[i]))) > LINE) {
63 printf("\n\t");
64 match = n_match + 8;
65 }
66 if (*list[i] == '\0') {
67 match += 8;
68 printf("<RETURN>");
69 }
70 else
71 printf("%s", list[i]);
72 if (list[i+1])
73 printf(", ");
74 else
75 putchar('\n');
76 match += 2;
77 }
78 continue;
79 }
80 if ((sp = strchr(buf, '\n')) != NULL)
81 *sp = '\0';
82 for (sp = buf; *sp; sp++)
83 if (isupper((unsigned char)*sp))
84 *sp = tolower((unsigned char)*sp);
85 for (i = n_match = 0; list[i]; i++)
86 if (comp(list[i])) {
87 n_match++;
88 match = i;
89 }
90 if (n_match == 1)
91 return match;
92 else if (buf[0] != '\0')
93 printf("Illegal response: \"%s\". Use '?' to get list of valid answers\n", buf);
94 }
95 return 0;
96 }
97
98 static int
comp(char * s1)99 comp(char *s1)
100 {
101 char *sp, *tsp, c;
102
103 if (buf[0] != '\0')
104 for (sp = buf, tsp = s1; *sp; ) {
105 c = isupper((unsigned char)*tsp) ?
106 tolower((unsigned char)*tsp) : *tsp;
107 tsp++;
108 if (c != *sp++)
109 return 0;
110 }
111 else if (*s1 != '\0')
112 return 0;
113 return 1;
114 }
115