projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| fdc7d56f | 1 | /* |
| 86164080 KB |
2 | * Copyright (c) 1983, 1993 |
| 3 | * The Regents of the University of California. All rights reserved. | |
| e95fc82a | 4 | * |
| c0567266 KB |
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. | |
| fdc7d56f EW |
32 | */ |
| 33 | ||
| 4560ad02 | 34 | #ifndef lint |
| fd88f5c5 | 35 | static char sccsid[] = "@(#)parse.c 8.2 (Berkeley) 4/28/95"; |
| e95fc82a | 36 | #endif /* not lint */ |
| 4560ad02 | 37 | |
| ac1774e9 | 38 | #include "extern.h" |
| 4560ad02 EW |
39 | |
| 40 | wordinit() | |
| 41 | { | |
| 42 | register struct wlist *w; | |
| 43 | ||
| 44 | for (w = wlist; w->string; w++) | |
| 45 | install(w); | |
| 46 | } | |
| 47 | ||
| 48 | hash(s) | |
| 49 | register char *s; | |
| 50 | { | |
| 51 | register hashval = 0; | |
| 52 | ||
| 53 | while (*s) { | |
| 54 | hashval += *s++; | |
| 55 | hashval *= HASHMUL; | |
| 56 | hashval &= HASHMASK; | |
| 57 | } | |
| 58 | return hashval; | |
| 59 | } | |
| 60 | ||
| 61 | struct wlist * | |
| 62 | lookup(s) | |
| 63 | char *s; | |
| 64 | { | |
| 65 | register struct wlist *wp; | |
| 66 | ||
| 67 | for (wp = hashtab[hash(s)]; wp != NULL; wp = wp->next) | |
| 68 | if (*s == *wp->string && strcmp(s, wp->string) == 0) | |
| 69 | return wp; | |
| 70 | return NULL; | |
| 71 | } | |
| 72 | ||
| 73 | install(wp) | |
| 74 | register struct wlist *wp; | |
| 75 | { | |
| 76 | int hashval; | |
| 77 | ||
| 78 | if (lookup(wp->string) == NULL) { | |
| 79 | hashval = hash(wp->string); | |
| 80 | wp->next = hashtab[hashval]; | |
| 81 | hashtab[hashval] = wp; | |
| 82 | } else | |
| 83 | printf("Multiply defined %s.\n", wp->string); | |
| 84 | } | |
| 85 | ||
| 86 | parse() | |
| 87 | { | |
| 88 | register struct wlist *wp; | |
| 89 | register n; | |
| 90 | ||
| 91 | wordnumber = 0; /* for cypher */ | |
| 92 | for (n = 0; n <= wordcount; n++) { | |
| 93 | if ((wp = lookup(words[n])) == NULL) { | |
| 94 | wordvalue[n] = -1; | |
| 95 | wordtype[n] = -1; | |
| 96 | } else { | |
| 97 | wordvalue[n] = wp -> value; | |
| 98 | wordtype[n] = wp -> article; | |
| 99 | } | |
| 100 | } | |
| 101 | } |