1 /* $NetBSD: getinp.c,v 1.5 1997/03/29 20:42:22 thorpej 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 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)getinp.c 8.1 (Berkeley) 5/31/93"; 39 #else 40 static char rcsid[] = "$NetBSD: getinp.c,v 1.5 1997/03/29 20:42:22 thorpej Exp $"; 41 #endif 42 #endif /* not lint */ 43 44 # include <stdio.h> 45 # include <string.h> 46 # include <ctype.h> 47 48 # define reg register 49 50 # define LINE 70 51 52 static char buf[257]; 53 54 getinp(prompt, list) 55 char *prompt, *list[]; { 56 57 reg int i, n_match, match; 58 char *sp; 59 int c; 60 int plen; 61 static int comp(); 62 63 for (;;) { 64 inter: 65 printf(prompt); 66 for (sp = buf; (c=getchar()) != '\n'; ) { 67 *sp = c; 68 if (c == -1) /* check for interupted system call */ 69 goto inter; 70 else if (sp != buf || *sp != ' ') 71 sp++; 72 } 73 *sp = c; 74 if (buf[0] == '?' && buf[1] == '\n') { 75 printf("Valid inputs are: "); 76 for (i = 0, match = 18; list[i]; i++) { 77 if ((match+=(n_match=strlen(list[i]))) > LINE) { 78 printf("\n\t"); 79 match = n_match + 8; 80 } 81 if (*list[i] == '\0') { 82 match += 8; 83 printf("<RETURN>"); 84 } 85 else 86 printf(list[i]); 87 if (list[i+1]) 88 printf(", "); 89 else 90 putchar('\n'); 91 match += 2; 92 } 93 continue; 94 } 95 *sp = '\0'; 96 for (sp = buf; *sp; sp++) 97 if (isupper(*sp)) 98 *sp = tolower(*sp); 99 for (i = n_match = 0; list[i]; i++) 100 if (comp(list[i])) { 101 n_match++; 102 match = i; 103 } 104 if (n_match == 1) 105 return match; 106 else if (buf[0] != '\0') 107 printf("Illegal response: \"%s\". Use '?' to get list of valid answers\n", buf); 108 } 109 } 110 111 static 112 comp(s1) 113 char *s1; { 114 115 reg char *sp, *tsp, c; 116 117 if (buf[0] != '\0') 118 for (sp = buf, tsp = s1; *sp; ) { 119 c = isupper(*tsp) ? tolower(*tsp) : *tsp; 120 tsp++; 121 if (c != *sp++) 122 return 0; 123 } 124 else if (*s1 != '\0') 125 return 0; 126 return 1; 127 } 128