1 /* 2 * Copyright (c) 1983 Regents of the University of California. 3 * 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 34 #ifndef lint 35 /*static char sccsid[] = "from: @(#)parse.c 5.3 (Berkeley) 6/1/90";*/ 36 static char rcsid[] = "$Id: parse.c,v 1.2 1993/08/01 18:55:53 mycroft Exp $"; 37 #endif /* not lint */ 38 39 #include "externs.h" 40 41 wordinit() 42 { 43 register struct wlist *w; 44 45 for (w = wlist; w->string; w++) 46 install(w); 47 } 48 49 hash(s) 50 register char *s; 51 { 52 register hashval = 0; 53 54 while (*s) { 55 hashval += *s++; 56 hashval *= HASHMUL; 57 hashval &= HASHMASK; 58 } 59 return hashval; 60 } 61 62 struct wlist * 63 lookup(s) 64 char *s; 65 { 66 register struct wlist *wp; 67 68 for (wp = hashtab[hash(s)]; wp != NULL; wp = wp->next) 69 if (*s == *wp->string && strcmp(s, wp->string) == 0) 70 return wp; 71 return NULL; 72 } 73 74 install(wp) 75 register struct wlist *wp; 76 { 77 int hashval; 78 79 if (lookup(wp->string) == NULL) { 80 hashval = hash(wp->string); 81 wp->next = hashtab[hashval]; 82 hashtab[hashval] = wp; 83 } else 84 printf("Multiply defined %s.\n", wp->string); 85 } 86 87 parse() 88 { 89 register struct wlist *wp; 90 register n; 91 92 wordnumber = 0; /* for cypher */ 93 for (n = 0; n <= wordcount; n++) { 94 if ((wp = lookup(words[n])) == NULL) { 95 wordvalue[n] = -1; 96 wordtype[n] = -1; 97 } else { 98 wordvalue[n] = wp -> value; 99 wordtype[n] = wp -> article; 100 } 101 } 102 } 103