kernel: Adjust some comments to the unionfs removal.
[dragonfly.git] / include / runetype.h
CommitLineData
0d5acd74
JM
1/*-
2 * Copyright (c) 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Paul Borman at Krystal Technologies.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * @(#)runetype.h 8.1 (Berkeley) 6/2/93
33 * $FreeBSD: head/include/runetype.h 232620 2012-03-06 20:15:23Z dim $
34 */
35
36#ifndef _RUNETYPE_H_
37#define _RUNETYPE_H_
38
39#include <sys/cdefs.h>
40#include <sys/types.h>
41
42#define _CACHED_RUNES (1 <<8 ) /* Must be a power of 2 */
43#define _CRMASK (~(_CACHED_RUNES - 1))
44
45/*
46 * The lower 8 bits of runetype[] contain the digit value of the rune.
47 */
48typedef struct {
49 __rune_t __min; /* First rune of the range */
50 __rune_t __max; /* Last rune (inclusive) of the range */
51 __rune_t __map; /* What first maps to in maps */
52 unsigned long *__types; /* Array of types in range */
53} _RuneEntry;
54
55typedef struct {
56 int __nranges; /* Number of ranges stored */
57 _RuneEntry *__ranges; /* Pointer to the ranges */
58} _RuneRange;
59
60typedef struct {
61 char __magic[8]; /* Magic saying what version we are */
62 char __encoding[32]; /* ASCII name of this encoding */
63
64 __rune_t (*__sgetrune)(const char *, __size_t, char const **);
65 int (*__sputrune)(__rune_t, char *, __size_t, char **);
66 __rune_t __invalid_rune;
67
68 unsigned long __runetype[_CACHED_RUNES];
69 __rune_t __maplower[_CACHED_RUNES];
70 __rune_t __mapupper[_CACHED_RUNES];
71
72 /*
73 * The following are to deal with Runes larger than _CACHED_RUNES - 1.
74 * Their data is actually contiguous with this structure so as to make
75 * it easier to read/write from/to disk.
76 */
77 _RuneRange __runetype_ext;
78 _RuneRange __maplower_ext;
79 _RuneRange __mapupper_ext;
80
81 void *__variable; /* Data which depends on the encoding */
82 int __variable_len; /* how long that data is */
83} _RuneLocale;
84
85#define _RUNE_MAGIC_1 "RuneMagi" /* Indicates version 0 of RuneLocale */
86__BEGIN_DECLS
87extern const _RuneLocale _DefaultRuneLocale;
88extern const _RuneLocale *_CurrentRuneLocale;
89#if defined(__NO_TLS) || defined(__RUNETYPE_INTERNAL)
90extern const _RuneLocale *__getCurrentRuneLocale(void);
91#else
92extern __thread const _RuneLocale *_ThreadRuneLocale;
93static __inline const _RuneLocale *__getCurrentRuneLocale(void)
94{
95
96 if (_ThreadRuneLocale)
97 return _ThreadRuneLocale;
98 if (_CurrentRuneLocale)
99 return _CurrentRuneLocale;
100 return &_DefaultRuneLocale;
101}
102#endif /* __NO_TLS || __RUNETYPE_INTERNAL */
103#define _CurrentRuneLocale (__getCurrentRuneLocale())
104__END_DECLS
105
106#endif /* !_RUNETYPE_H_ */