xref: /freebsd/include/runetype.h (revision 1b6c76a2fe091c74f08427e6c870851025a9cf67)
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  */
38 
39 #ifndef	_RUNETYPE_H_
40 #define	_RUNETYPE_H_
41 
42 #include <sys/cdefs.h>
43 #include <machine/ansi.h>
44 
45 #ifdef	_BSD_RUNE_T_
46 typedef	_BSD_RUNE_T_	rune_t;
47 #undef	_BSD_RUNE_T_
48 #endif
49 
50 #ifdef	_BSD_SIZE_T_
51 typedef	_BSD_SIZE_T_	size_t;
52 #undef	_BSD_SIZE_T_
53 #endif
54 
55 #ifdef	_BSD_WCHAR_T_
56 typedef	_BSD_WCHAR_T_	wchar_t;
57 #undef	_BSD_WCHAR_T_
58 #endif
59 
60 #define	_CACHED_RUNES	(1 <<8 )	/* Must be a power of 2 */
61 #define	_CRMASK		(~(_CACHED_RUNES - 1))
62 
63 /*
64  * The lower 8 bits of runetype[] contain the digit value of the rune.
65  */
66 typedef struct {
67 	rune_t		min;		/* First rune of the range */
68 	rune_t		max;		/* Last rune (inclusive) of the range */
69 	rune_t		map;		/* What first maps to in maps */
70 	unsigned long	*types;		/* Array of types in range */
71 } _RuneEntry;
72 
73 typedef struct {
74 	int		nranges;	/* Number of ranges stored */
75 	_RuneEntry	*ranges;	/* Pointer to the ranges */
76 } _RuneRange;
77 
78 typedef struct {
79 	char		magic[8];	/* Magic saying what version we are */
80 	char		encoding[32];	/* ASCII name of this encoding */
81 
82 	rune_t		(*sgetrune)
83 	    __P((const char *, size_t, char const **));
84 	int		(*sputrune)
85 	    __P((rune_t, char *, size_t, char **));
86 	rune_t		invalid_rune;
87 
88 	unsigned long	runetype[_CACHED_RUNES];
89 	rune_t		maplower[_CACHED_RUNES];
90 	rune_t		mapupper[_CACHED_RUNES];
91 
92 	/*
93 	 * The following are to deal with Runes larger than _CACHED_RUNES - 1.
94 	 * Their data is actually contiguous with this structure so as to make
95 	 * it easier to read/write from/to disk.
96 	 */
97 	_RuneRange	runetype_ext;
98 	_RuneRange	maplower_ext;
99 	_RuneRange	mapupper_ext;
100 
101 	void		*variable;	/* Data which depends on the encoding */
102 	int		variable_len;	/* how long that data is */
103 } _RuneLocale;
104 
105 #define	_RUNE_MAGIC_1	"RuneMagi"	/* Indicates version 0 of RuneLocale */
106 
107 extern _RuneLocale _DefaultRuneLocale;
108 extern _RuneLocale *_CurrentRuneLocale;
109 
110 #endif	/* !_RUNETYPE_H_ */
111