1 /* $NetBSD: getinp.c,v 1.9 2000/07/10 10:19:26 itojun 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)getinp.c 8.1 (Berkeley) 5/31/93"; 40 #else 41 __RCSID("$NetBSD: getinp.c,v 1.9 2000/07/10 10:19:26 itojun Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include <stdio.h> 46 #include <string.h> 47 #include <ctype.h> 48 #include "monop.ext" 49 50 #define LINE 70 51 52 static char buf[257]; 53 54 static int comp __P((const char *)); 55 56 int 57 getinp(prompt, list) 58 const char *prompt, *const list[]; 59 { 60 int i, n_match, match = 0; 61 char *sp; 62 int c; 63 64 for (;;) { 65 inter: 66 printf("%s", prompt); 67 for (sp = buf; (c=getchar()) != '\n'; ) { 68 *sp = c; 69 if (c == -1) /* check for interupted system call */ 70 goto inter; 71 else if (sp != buf || *sp != ' ') 72 sp++; 73 } 74 *sp = c; 75 if (buf[0] == '?' && buf[1] == '\n') { 76 printf("Valid inputs are: "); 77 for (i = 0, match = 18; list[i]; i++) { 78 if ((match+=(n_match=strlen(list[i]))) > LINE) { 79 printf("\n\t"); 80 match = n_match + 8; 81 } 82 if (*list[i] == '\0') { 83 match += 8; 84 printf("<RETURN>"); 85 } 86 else 87 printf("%s", list[i]); 88 if (list[i+1]) 89 printf(", "); 90 else 91 putchar('\n'); 92 match += 2; 93 } 94 continue; 95 } 96 *sp = '\0'; 97 for (sp = buf; *sp; sp++) 98 if (isupper(*sp)) 99 *sp = tolower(*sp); 100 for (i = n_match = 0; list[i]; i++) 101 if (comp(list[i])) { 102 n_match++; 103 match = i; 104 } 105 if (n_match == 1) 106 return match; 107 else if (buf[0] != '\0') 108 printf("Illegal response: \"%s\". " 109 "Use '?' to get list of valid answers\n", buf); 110 } 111 } 112 113 static int 114 comp(s1) 115 const char *s1; 116 { 117 const char *sp, *tsp; 118 char c; 119 120 if (buf[0] != '\0') 121 for (sp = buf, tsp = s1; *sp; ) { 122 c = isupper(*tsp) ? tolower(*tsp) : *tsp; 123 tsp++; 124 if (c != *sp++) 125 return 0; 126 } 127 else if (*s1 != '\0') 128 return 0; 129 return 1; 130 } 131