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 1.4 2006/08/08 16:47:20 pavalos Exp $ 36 */ 37 38 #include "externs.h" 39 40 static int hash (const char *); 41 static void install (struct wlist *); 42 static struct wlist *lookup (const char *); 43 44 void 45 wordinit(void) 46 { 47 struct wlist *w; 48 49 for (w = wlist; w->string; w++) 50 install(w); 51 } 52 53 static int 54 hash(const char *s) 55 { 56 int hashval = 0; 57 58 while (*s) { 59 hashval += *s++; 60 hashval *= HASHMUL; 61 hashval &= HASHMASK; 62 } 63 return hashval; 64 } 65 66 static struct wlist * 67 lookup(const char *s) 68 { 69 struct wlist *wp; 70 71 for (wp = hashtab[hash(s)]; wp != NULL; wp = wp->next) 72 if (*s == *wp->string && strcmp(s, wp->string) == 0) 73 return wp; 74 return NULL; 75 } 76 77 static void 78 install(struct wlist *wp) 79 { 80 int hashval; 81 82 if (lookup(wp->string) == NULL) { 83 hashval = hash(wp->string); 84 wp->next = hashtab[hashval]; 85 hashtab[hashval] = wp; 86 } else 87 printf("Multiply defined %s.\n", wp->string); 88 } 89 90 void 91 parse(void) 92 { 93 struct wlist *wp; 94 int n; 95 96 wordnumber = 0; /* for cypher */ 97 for (n = 0; n <= wordcount; n++) { 98 if ((wp = lookup(words[n])) == NULL) { 99 wordvalue[n] = -1; 100 wordtype[n] = -1; 101 } else { 102 wordvalue[n] = wp -> value; 103 wordtype[n] = wp -> article; 104 } 105 } 106 } 107