120 lines
3.2 KiB
C
120 lines
3.2 KiB
C
/* $NetBSD: getinp.c,v 1.19 2012/06/19 05:35:32 dholland Exp $ */
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/*
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* Copyright (c) 1980, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 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
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)getinp.c 8.1 (Berkeley) 5/31/93";
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#else
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__RCSID("$NetBSD: getinp.c,v 1.19 2012/06/19 05:35:32 dholland Exp $");
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#endif
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#endif /* not lint */
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#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(const char *prompt, const char *const lst [])
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{
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int i, n_match, match = 0;
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char *sp;
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for (;;) {
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printf("%s", prompt);
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fgets(buf, sizeof(buf), stdin);
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if (feof(stdin)) {
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return 0;
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}
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if (buf[0] == '?' && buf[1] == '\n') {
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printf("Valid inputs are: ");
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for (i = 0, match = 18; lst[i]; i++) {
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if ((match+=(n_match=strlen(lst[i]))) > LINE) {
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printf("\n\t");
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match = n_match + 8;
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}
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if (*lst[i] == '\0') {
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match += 8;
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printf("<RETURN>");
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}
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else
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printf("%s", lst[i]);
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if (lst[i+1])
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printf(", ");
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else
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putchar('\n');
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match += 2;
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}
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continue;
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}
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if ((sp = strchr(buf, '\n')) != NULL)
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*sp = '\0';
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for (sp = buf; *sp; sp++)
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*sp = tolower((unsigned char)*sp);
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for (i = n_match = 0; lst[i]; i++)
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if (comp(lst[i])) {
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n_match++;
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match = i;
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}
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if (n_match == 1)
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return match;
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else if (buf[0] != '\0')
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printf("Illegal response: \"%s\". "
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"Use '?' to get list of valid answers\n", buf);
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}
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}
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static int
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comp(const char *s1)
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{
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const char *sp, *tsp;
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char c;
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if (buf[0] != '\0')
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for (sp = buf, tsp = s1; *sp; ) {
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c = tolower((unsigned char)*tsp);
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tsp++;
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if (c != *sp++)
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return 0;
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}
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else if (*s1 != '\0')
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return 0;
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return 1;
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}
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