1 /* $Id: man_hash.c,v 1.15 2009/09/23 11:53:45 kristaps Exp $ */
3 * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 #include <sys/types.h>
26 static u_char table[26 * 6];
29 * XXX - this hash has global scope, so if intended for use as a library
30 * with multiple callers, it will need re-invocation protection.
37 memset(table, UCHAR_MAX, sizeof(table));
39 for (i = 0; i < MAN_MAX; i++) {
40 x = man_macronames[i][0];
41 assert((x >= 65 && x <= 90) ||
42 (x >= 97 && x <= 122));
44 x -= (x <= 90) ? 65 : 97;
47 for (j = 0; j < 6; j++)
48 if (UCHAR_MAX == table[x + j]) {
49 table[x + j] = (u_char)i;
57 man_hash_find(const char *tmp)
61 if (0 == (x = tmp[0]))
63 if ( ! ((x >= 65 && x <= 90) || (x >= 97 && x <= 122)))
66 x -= (x <= 90) ? 65 : 97;
69 for (i = 0; i < 6; i++) {
70 if (UCHAR_MAX == (tok = table[x + i]))
72 if (0 == strcmp(tmp, man_macronames[tok]))