locate(1): Fix building with -fno-common.
[dragonfly.git] / usr.bin / locate / locate / locate.h
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1/*
2 * Copyright (c) 1995 Wolfram Schneider <wosch@FreeBSD.org>. Berlin.
3 * Copyright (c) 1989, 1993
4 * The Regents of the University of California. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 * must display the following acknowledgement:
16 * This product includes software developed by the University of
17 * California, Berkeley and its contributors.
18 * 4. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * @(#)locate.h 8.1 (Berkeley) 6/6/93
35 * $FreeBSD: src/usr.bin/locate/locate/locate.h,v 1.7 1999/08/28 01:02:59 peter Exp $
1de703da 36 * $DragonFly: src/usr.bin/locate/locate/locate.h,v 1.2 2003/06/17 04:29:28 dillon Exp $
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37 */
38
39/* Symbolic constants shared by locate.c and code.c */
40
41#define NBG 128 /* number of bigrams considered */
42#define OFFSET 14 /* abs value of max likely diff */
43#define PARITY 0200 /* parity bit */
44#define SWITCH 30 /* switch code */
45#define UMLAUT 31 /* an 8 bit char followed */
46
47/* 0-28 likeliest differential counts + offset to make nonnegative */
48#define LDC_MIN 0
49#define LDC_MAX 28
50
51/* 128-255 bigram codes (128 most common, as determined by 'updatedb') */
52#define BIGRAM_MIN (UCHAR_MAX - CHAR_MAX)
53#define BIGRAM_MAX UCHAR_MAX
54
55/* 32-127 single character (printable) ascii residue (ie, literal) */
56#define ASCII_MIN 32
57#define ASCII_MAX CHAR_MAX
58
59/* #define TO7BIT(x) (x = ( ((u_char)x) & CHAR_MAX )) */
60#define TO7BIT(x) (x = x & CHAR_MAX )
61
62
63#if UCHAR_MAX >= 4096
64 define TOLOWER(ch) tolower(ch)
65#else
66
89656a4e 67extern u_char myctype[UCHAR_MAX + 1];
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68#define TOLOWER(ch) (myctype[ch])
69#endif
70
71#define INTSIZE (sizeof(int))
72
73#define LOCATE_REG "*?[]\\" /* fnmatch(3) meta characters */