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  * 4. 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: src/include/runetype.h,v 1.5 2002/03/26 01:35:05 bde Exp $
34  */
35 
36 #ifndef	_RUNETYPE_H_
37 #define	_RUNETYPE_H_
38 
39 #include <stddef.h>
40 #include <machine/ansi.h>
41 
42 #ifdef	_BSD_RUNE_T_
43 typedef	_BSD_RUNE_T_	rune_t;
44 #undef	_BSD_RUNE_T_
45 #else
46 typedef int rune_t;
47 #endif
48 
49 #define	_CACHED_RUNES	(1 <<8 )	/* Must be a power of 2 */
50 #define	_CRMASK		(~(_CACHED_RUNES - 1))
51 
52 /*
53  * The lower 8 bits of runetype[] contain the digit value of the rune.
54  */
55 typedef struct {
56 	rune_t		min;		/* First rune of the range */
57 	rune_t		max;		/* Last rune (inclusive) of the range */
58 	rune_t		map;		/* What first maps to in maps */
59 	unsigned long	*types;		/* Array of types in range */
60 } _RuneEntry;
61 
62 typedef struct {
63 	int		nranges;	/* Number of ranges stored */
64 	_RuneEntry	*ranges;	/* Pointer to the ranges */
65 } _RuneRange;
66 
67 typedef struct {
68 	char		magic[8];	/* Magic saying what version we are */
69 	char		encoding[32];	/* ASCII name of this encoding */
70 
71 	rune_t		(*sgetrune)(const char *, size_t, char const **);
72 	int		(*sputrune)(rune_t, char *, size_t, char **);
73 	rune_t		invalid_rune;
74 
75 	unsigned long	runetype[_CACHED_RUNES];
76 	rune_t		maplower[_CACHED_RUNES];
77 	rune_t		mapupper[_CACHED_RUNES];
78 
79 	/*
80 	 * The following are to deal with Runes larger than _CACHED_RUNES - 1.
81 	 * Their data is actually contiguous with this structure so as to make
82 	 * it easier to read/write from/to disk.
83 	 */
84 	_RuneRange	runetype_ext;
85 	_RuneRange	maplower_ext;
86 	_RuneRange	mapupper_ext;
87 
88 	void		*variable;	/* Data which depends on the encoding */
89 	int		variable_len;	/* how long that data is */
90 } _RuneLocale;
91 
92 #define	_RUNE_MAGIC_1	"RuneMagi"	/* Indicates version 0 of RuneLocale */
93 
94 extern _RuneLocale _DefaultRuneLocale;
95 extern _RuneLocale *_CurrentRuneLocale;
96 
97 #endif	/* !_RUNETYPE_H_ */
98