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 * $FreeBSD$
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_local 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_ */
107