include/runetype.h

   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: head/include/runetype.h 232620 2012-03-06 20:15:23Z dim $
  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 const _RuneLocale *_ThreadRuneLocale;
  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_ */