xref: /freebsd/include/runetype.h (revision 39beb93c3f8bdbf72a61fda42300b5ebed7390c8)
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. All advertising materials mentioning features or use of this software
17  *    must display the following acknowledgement:
18  *	This product includes software developed by the University of
19  *	California, Berkeley and its contributors.
20  * 4. Neither the name of the University nor the names of its contributors
21  *    may be used to endorse or promote products derived from this software
22  *    without specific prior written permission.
23  *
24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34  * SUCH DAMAGE.
35  *
36  *	@(#)runetype.h	8.1 (Berkeley) 6/2/93
37  * $FreeBSD$
38  */
39 
40 #ifndef	_RUNETYPE_H_
41 #define	_RUNETYPE_H_
42 
43 #include <sys/cdefs.h>
44 #include <sys/_types.h>
45 
46 #define	_CACHED_RUNES	(1 <<8 )	/* Must be a power of 2 */
47 #define	_CRMASK		(~(_CACHED_RUNES - 1))
48 
49 /*
50  * The lower 8 bits of runetype[] contain the digit value of the rune.
51  */
52 typedef struct {
53 	__rune_t	__min;		/* First rune of the range */
54 	__rune_t	__max;		/* Last rune (inclusive) of the range */
55 	__rune_t	__map;		/* What first maps to in maps */
56 	unsigned long	*__types;	/* Array of types in range */
57 } _RuneEntry;
58 
59 typedef struct {
60 	int		__nranges;	/* Number of ranges stored */
61 	_RuneEntry	*__ranges;	/* Pointer to the ranges */
62 } _RuneRange;
63 
64 typedef struct {
65 	char		__magic[8];	/* Magic saying what version we are */
66 	char		__encoding[32];	/* ASCII name of this encoding */
67 
68 	__rune_t	(*__sgetrune)(const char *, __size_t, char const **);
69 	int		(*__sputrune)(__rune_t, char *, __size_t, char **);
70 	__rune_t	__invalid_rune;
71 
72 	unsigned long	__runetype[_CACHED_RUNES];
73 	__rune_t	__maplower[_CACHED_RUNES];
74 	__rune_t	__mapupper[_CACHED_RUNES];
75 
76 	/*
77 	 * The following are to deal with Runes larger than _CACHED_RUNES - 1.
78 	 * Their data is actually contiguous with this structure so as to make
79 	 * it easier to read/write from/to disk.
80 	 */
81 	_RuneRange	__runetype_ext;
82 	_RuneRange	__maplower_ext;
83 	_RuneRange	__mapupper_ext;
84 
85 	void		*__variable;	/* Data which depends on the encoding */
86 	int		__variable_len;	/* how long that data is */
87 } _RuneLocale;
88 
89 #define	_RUNE_MAGIC_1	"RuneMagi"	/* Indicates version 0 of RuneLocale */
90 
91 extern _RuneLocale _DefaultRuneLocale;
92 extern _RuneLocale *_CurrentRuneLocale;
93 
94 #endif	/* !_RUNETYPE_H_ */
95