NetBSD/games/monop/getinp.c

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/* $NetBSD: getinp.c,v 1.18 2008/02/24 01:57:34 dholland Exp $ */
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/*
* Copyright (c) 1980, 1993
* The Regents of the University of California. All rights reserved.
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*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
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#include <sys/cdefs.h>
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#ifndef lint
#if 0
static char sccsid[] = "@(#)getinp.c 8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: getinp.c,v 1.18 2008/02/24 01:57:34 dholland Exp $");
#endif
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#endif /* not lint */
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#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include "monop.h"
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#define LINE 70
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static char buf[257];
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static int comp(const char *);
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int
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getinp(prompt, lst)
const char *prompt, *const lst[];
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{
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int i, n_match, match = 0;
char *sp;
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for (;;) {
printf("%s", prompt);
fgets(buf, sizeof(buf), stdin);
if (feof(stdin)) {
return 0;
}
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if (buf[0] == '?' && buf[1] == '\n') {
printf("Valid inputs are: ");
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for (i = 0, match = 18; lst[i]; i++) {
if ((match+=(n_match=strlen(lst[i]))) > LINE) {
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printf("\n\t");
match = n_match + 8;
}
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if (*lst[i] == '\0') {
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match += 8;
printf("<RETURN>");
}
else
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printf("%s", lst[i]);
if (lst[i+1])
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printf(", ");
else
putchar('\n');
match += 2;
}
continue;
}
if ((sp = strchr(buf, '\n')) != NULL)
*sp = '\0';
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for (sp = buf; *sp; sp++)
*sp = tolower((unsigned char)*sp);
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for (i = n_match = 0; lst[i]; i++)
if (comp(lst[i])) {
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n_match++;
match = i;
}
if (n_match == 1)
return match;
else if (buf[0] != '\0')
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printf("Illegal response: \"%s\". "
"Use '?' to get list of valid answers\n", buf);
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}
}
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static int
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comp(s1)
const char *s1;
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{
const char *sp, *tsp;
char c;
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if (buf[0] != '\0')
for (sp = buf, tsp = s1; *sp; ) {
c = tolower((unsigned char)*tsp);
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tsp++;
if (c != *sp++)
return 0;
}
else if (*s1 != '\0')
return 0;
return 1;
}