runetype.h revision 6b5e5868e7ebf1aff3a5abd7d0c4ef0e5fbf3648
/*
* Copyright 2010 Nexenta Systems, Inc. All rights reserved.
* Copyright (c) 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Paul Borman at Krystal Technologies.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Because we borrowed the __rune_t defintions from _types.h, we need
* this copyright notice as well:
*
* Copyright (c) 2002 Mike Barcroft <mike@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _RUNETYPE_H_
#define _RUNETYPE_H_
#define _CACHED_RUNES (1 << 8) /* Must be a power of 2 */
#define _CRMASK (~(_CACHED_RUNES - 1))
/*
* rune_t is declared to be an ``int'' instead of the more natural
* ``unsigned long'' or ``long''. Two things are happening here. It is not
* unsigned so that EOF (-1) can be naturally assigned to it and used. Also,
* it looks like 10646 will be a 31 bit standard. This means that if your
* ints cannot hold 32 bits, you will be in trouble. The reason an int was
* chosen over a long is that the is*() and to*() routines take ints (says
* ANSI C), but they use __ct_rune_t instead of int.
*
* NOTE: rune_t is not covered by ANSI nor other standards, and should not
* be instantiated outside of lib/libc/locale. Use wchar_t. wchar_t and
* rune_t must be the same type. Also, wint_t must be no narrower than
* wchar_t, and should be able to hold all members of the largest
* character set plus one extra value (WEOF), and must be at least 16 bits.
*
* For compatibility with Solaris, we want to use long in ILP32, and int in
* LP64. This is due to historical Solaris legacy. (See <wchar.h> for
* the definition.)
*/
#if defined(_LP64)
typedef int __ct_rune_t; /* arg type for ctype funcs */
#else
typedef int __ct_rune_t;
#endif
typedef int __rune_t; /* rune_t (see above) */
/*
* The lower 8 bits of runetype[] contain the digit value of the rune.
*/
typedef struct {
__rune_t __min; /* First rune of the range */
__rune_t __max; /* Last rune (inclusive) of the range */
__rune_t __map; /* What first maps to in maps */
unsigned *__types; /* Array of types in range */
} _RuneEntry;
typedef struct {
int __nranges; /* Number of ranges stored */
_RuneEntry *__ranges; /* Pointer to the ranges */
} _RuneRange;
typedef struct {
char __magic[8]; /* Magic saying what version we are */
char __encoding[32]; /* ASCII name of this encoding */
unsigned int __runetype[_CACHED_RUNES];
__rune_t __maplower[_CACHED_RUNES];
__rune_t __mapupper[_CACHED_RUNES];
/*
* The following are to deal with Runes larger than _CACHED_RUNES - 1.
* Their data is actually contiguous with this structure so as to make
* it easier to read/write from/to disk.
*/
_RuneRange __runetype_ext;
_RuneRange __maplower_ext;
_RuneRange __mapupper_ext;
void *__variable; /* Data which depends on the encoding */
int __variable_len; /* how long that data is */
} _RuneLocale;
#define _RUNE_MAGIC_1 "RuneMagi" /* Indicates version 0 of RuneLocale */
extern _RuneLocale _DefaultRuneLocale;
extern _RuneLocale *_CurrentRuneLocale;
#endif /* !_RUNETYPE_H_ */