1 /* $Id: mdoc_hash.c,v 1.6 2009/09/21 21:11:37 schwarze 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>
28 static u_char table
[27 * 12];
31 * XXX - this hash has global scope, so if intended for use as a library
32 * with multiple callers, it will need re-invocation protection.
40 memset(table
, UCHAR_MAX
, sizeof(table
));
42 for (i
= 0; i
< MDOC_MAX
; i
++) {
43 p
= mdoc_macronames
[i
];
45 if (isalpha((u_char
)p
[1]))
46 major
= 12 * (tolower((u_char
)p
[1]) - 97);
50 for (j
= 0; j
< 12; j
++)
51 if (UCHAR_MAX
== table
[major
+ j
]) {
52 table
[major
+ j
] = (u_char
)i
;
61 mdoc_hash_find(const char *p
)
67 if ( ! isalpha((u_char
)p
[0]) && '%' != p
[0])
70 if (isalpha((u_char
)p
[1]))
71 major
= 12 * (tolower((u_char
)p
[1]) - 97);
80 for (j
= 0; j
< 12; j
++) {
81 if (UCHAR_MAX
== (i
= table
[major
+ j
]))
83 if (0 == strcmp(p
, mdoc_macronames
[i
]))