1 /* $NetBSD: getinp.c,v 1.18 2008/02/24 01:57:34 dholland 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 1.18 2008/02/24 01:57:34 dholland Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include <stdio.h> 42 #include <string.h> 43 #include <ctype.h> 44 45 #include "monop.h" 46 47 #define LINE 70 48 49 static char buf[257]; 50 51 static int comp(const char *); 52 53 int 54 getinp(prompt, lst) 55 const char *prompt, *const lst[]; 56 { 57 int i, n_match, match = 0; 58 char *sp; 59 60 for (;;) { 61 printf("%s", prompt); 62 fgets(buf, sizeof(buf), stdin); 63 if (feof(stdin)) { 64 return 0; 65 } 66 if (buf[0] == '?' && buf[1] == '\n') { 67 printf("Valid inputs are: "); 68 for (i = 0, match = 18; lst[i]; i++) { 69 if ((match+=(n_match=strlen(lst[i]))) > LINE) { 70 printf("\n\t"); 71 match = n_match + 8; 72 } 73 if (*lst[i] == '\0') { 74 match += 8; 75 printf("<RETURN>"); 76 } 77 else 78 printf("%s", lst[i]); 79 if (lst[i+1]) 80 printf(", "); 81 else 82 putchar('\n'); 83 match += 2; 84 } 85 continue; 86 } 87 if ((sp = strchr(buf, '\n')) != NULL) 88 *sp = '\0'; 89 for (sp = buf; *sp; sp++) 90 *sp = tolower((unsigned char)*sp); 91 for (i = n_match = 0; lst[i]; i++) 92 if (comp(lst[i])) { 93 n_match++; 94 match = i; 95 } 96 if (n_match == 1) 97 return match; 98 else if (buf[0] != '\0') 99 printf("Illegal response: \"%s\". " 100 "Use '?' to get list of valid answers\n", buf); 101 } 102 } 103 104 static int 105 comp(s1) 106 const char *s1; 107 { 108 const char *sp, *tsp; 109 char c; 110 111 if (buf[0] != '\0') 112 for (sp = buf, tsp = s1; *sp; ) { 113 c = tolower((unsigned char)*tsp); 114 tsp++; 115 if (c != *sp++) 116 return 0; 117 } 118 else if (*s1 != '\0') 119 return 0; 120 return 1; 121 } 122