1 /* $NetBSD: getinp.c,v 1.19 2012/06/19 05:35:32 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 1.19 2012/06/19 05:35:32 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(const char *prompt, const char *const lst []) 55 { 56 int i, n_match, match = 0; 57 char *sp; 58 59 for (;;) { 60 printf("%s", prompt); 61 fgets(buf, sizeof(buf), stdin); 62 if (feof(stdin)) { 63 return 0; 64 } 65 if (buf[0] == '?' && buf[1] == '\n') { 66 printf("Valid inputs are: "); 67 for (i = 0, match = 18; lst[i]; i++) { 68 if ((match+=(n_match=strlen(lst[i]))) > LINE) { 69 printf("\n\t"); 70 match = n_match + 8; 71 } 72 if (*lst[i] == '\0') { 73 match += 8; 74 printf("<RETURN>"); 75 } 76 else 77 printf("%s", lst[i]); 78 if (lst[i+1]) 79 printf(", "); 80 else 81 putchar('\n'); 82 match += 2; 83 } 84 continue; 85 } 86 if ((sp = strchr(buf, '\n')) != NULL) 87 *sp = '\0'; 88 for (sp = buf; *sp; sp++) 89 *sp = tolower((unsigned char)*sp); 90 for (i = n_match = 0; lst[i]; i++) 91 if (comp(lst[i])) { 92 n_match++; 93 match = i; 94 } 95 if (n_match == 1) 96 return match; 97 else if (buf[0] != '\0') 98 printf("Illegal response: \"%s\". " 99 "Use '?' to get list of valid answers\n", buf); 100 } 101 } 102 103 static int 104 comp(const char *s1) 105 { 106 const char *sp, *tsp; 107 char c; 108 109 if (buf[0] != '\0') 110 for (sp = buf, tsp = s1; *sp; ) { 111 c = tolower((unsigned char)*tsp); 112 tsp++; 113 if (c != *sp++) 114 return 0; 115 } 116 else if (*s1 != '\0') 117 return 0; 118 return 1; 119 } 120