1 /* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)parse.c 8.1 (Berkeley) 5/31/93 34 * $FreeBSD: src/games/battlestar/parse.c,v 1.5.2.1 2001/03/05 11:45:36 kris Exp $ 35 * $DragonFly: src/games/battlestar/parse.c,v 1.3 2003/11/12 14:53:52 eirikn Exp $ 36 */ 37 38 #include "externs.h" 39 40 static int hash (const char *); 41 static void install (struct wlist *); 42 struct wlist *lookup (const char *); 43 44 void 45 wordinit() 46 { 47 struct wlist *w; 48 49 for (w = wlist; w->string; w++) 50 install(w); 51 } 52 53 int 54 hash(s) 55 const char *s; 56 { 57 int hashval = 0; 58 59 while (*s) { 60 hashval += *s++; 61 hashval *= HASHMUL; 62 hashval &= HASHMASK; 63 } 64 return hashval; 65 } 66 67 struct wlist * 68 lookup(s) 69 const char *s; 70 { 71 struct wlist *wp; 72 73 for (wp = hashtab[hash(s)]; wp != NULL; wp = wp->next) 74 if (*s == *wp->string && strcmp(s, wp->string) == 0) 75 return wp; 76 return NULL; 77 } 78 79 void 80 install(wp) 81 struct wlist *wp; 82 { 83 int hashval; 84 85 if (lookup(wp->string) == NULL) { 86 hashval = hash(wp->string); 87 wp->next = hashtab[hashval]; 88 hashtab[hashval] = wp; 89 } else 90 printf("Multiply defined %s.\n", wp->string); 91 } 92 93 void 94 parse() 95 { 96 struct wlist *wp; 97 int n; 98 99 wordnumber = 0; /* for cypher */ 100 for (n = 0; n <= wordcount; n++) { 101 if ((wp = lookup(words[n])) == NULL) { 102 wordvalue[n] = -1; 103 wordtype[n] = -1; 104 } else { 105 wordvalue[n] = wp -> value; 106 wordtype[n] = wp -> article; 107 } 108 } 109 } 110