xref: /illumos-gate/usr/src/boot/include/runetype.h (revision 199767f8)
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  */
48 typedef 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 
55 typedef struct {
56 	int		__nranges;	/* Number of ranges stored */
57 	_RuneEntry	*__ranges;	/* Pointer to the ranges */
58 } _RuneRange;
59 
60 typedef 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
87 extern const _RuneLocale _DefaultRuneLocale;
88 extern const _RuneLocale *_CurrentRuneLocale;
89 #if defined(__NO_TLS) || defined(__RUNETYPE_INTERNAL)
90 extern const _RuneLocale *__getCurrentRuneLocale(void);
91 #else
92 extern _Thread_local const _RuneLocale *_ThreadRuneLocale;
__getCurrentRuneLocale(void)93 static __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