1 /* $NetBSD: getinp.c,v 1.6 1997/10/12 17:45:10 christos 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 1.6 1997/10/12 17:45:10 christos 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((char *)); 55 56 int 57 getinp(prompt, list) 58 char *prompt, *list[]; 59 { 60 61 int i, n_match, match = 0; 62 char *sp; 63 int c; 64 65 for (;;) { 66 inter: 67 printf(prompt); 68 for (sp = buf; (c=getchar()) != '\n'; ) { 69 *sp = c; 70 if (c == -1) /* check for interupted system call */ 71 goto inter; 72 else if (sp != buf || *sp != ' ') 73 sp++; 74 } 75 *sp = c; 76 if (buf[0] == '?' && buf[1] == '\n') { 77 printf("Valid inputs are: "); 78 for (i = 0, match = 18; list[i]; i++) { 79 if ((match+=(n_match=strlen(list[i]))) > LINE) { 80 printf("\n\t"); 81 match = n_match + 8; 82 } 83 if (*list[i] == '\0') { 84 match += 8; 85 printf("<RETURN>"); 86 } 87 else 88 printf(list[i]); 89 if (list[i+1]) 90 printf(", "); 91 else 92 putchar('\n'); 93 match += 2; 94 } 95 continue; 96 } 97 *sp = '\0'; 98 for (sp = buf; *sp; sp++) 99 if (isupper(*sp)) 100 *sp = tolower(*sp); 101 for (i = n_match = 0; list[i]; i++) 102 if (comp(list[i])) { 103 n_match++; 104 match = i; 105 } 106 if (n_match == 1) 107 return match; 108 else if (buf[0] != '\0') 109 printf("Illegal response: \"%s\". Use '?' to get list of valid answers\n", buf); 110 } 111 } 112 113 static int 114 comp(s1) 115 char *s1; 116 { 117 118 char *sp, *tsp, 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