lib/libc/locale/collate.h

   1 /*-
   2  * Copyright 2010 Nexenta Systems, Inc.  All rights reserved.
   3  * Copyright (c) 1995 Alex Tatmanjants <alex@elvisti.kiev.ua>
   4  *              at Electronni Visti IA, Kiev, Ukraine.
   5  *                      All rights reserved.
   6  *
   7  * Copyright (c) 2011 The FreeBSD Foundation
   8  * All rights reserved.
   9  * Portions of this software were developed by David Chisnall
  10  * under sponsorship from the FreeBSD Foundation.
  11  *
  12  * Redistribution and use in source and binary forms, with or without
  13  * modification, are permitted provided that the following conditions
  14  * are met:
  15  * 1. Redistributions of source code must retain the above copyright
  16  *    notice, this list of conditions and the following disclaimer.
  17  * 2. Redistributions in binary form must reproduce the above copyright
  18  *    notice, this list of conditions and the following disclaimer in the
  19  *    documentation and/or other materials provided with the distribution.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * Adapted to xlocale by John Marino <draco@marino.st>
  34  */
  35
  36 #ifndef _COLLATE_H_
  37 #define _COLLATE_H_
  38
  39 #include <sys/cdefs.h>
  40 #include <sys/types.h>
  41 #include <limits.h>
  42 #include "xlocale_private.h"
  43
  44 /*
  45  * Work around buildworld bootstrapping from older systems whose limits.h
  46  * sets COLL_WEIGHTS_MAX to 0.
  47  */
  48 #if COLL_WEIGHTS_MAX == 0
  49 #undef COLL_WEIGHTS_MAX
  50 #define COLL_WEIGHTS_MAX 10
  51 #endif
  52
  53 #define COLLATE_STR_LEN         24              /* should be 64-bit multiple */
  54 #define COLLATE_VERSION         "DragonFly-4.4\n"
  55
  56 #define COLLATE_MAX_PRIORITY    (0x7fffffff)    /* max signed value */
  57 #define COLLATE_SUBST_PRIORITY  (0x40000000)    /* bit indicates subst table */
  58
  59 #define DIRECTIVE_UNDEF         0x00
  60 #define DIRECTIVE_FORWARD       0x01
  61 #define DIRECTIVE_BACKWARD      0x02
  62 #define DIRECTIVE_POSITION      0x04
  63 #define DIRECTIVE_UNDEFINED     0x08    /* special last weight for UNDEFINED */
  64
  65 #define DIRECTIVE_DIRECTION_MASK (DIRECTIVE_FORWARD | DIRECTIVE_BACKWARD)
  66
  67 /*
  68  * The collate file format is as follows:
  69  *
  70  * char         version[COLLATE_STR_LEN];       // must be COLLATE_VERSION
  71  * collate_info_t       info;                   // see below, includes padding
  72  * collate_char_pri_t   char_data[256];         // 8 bit char values
  73  * collate_subst_t      subst[*];               // 0 or more substitutions
  74  * collate_chain_pri_t  chains[*];              // 0 or more chains
  75  * collate_large_pri_t  large[*];               // extended char priorities
  76  *
  77  * Note that all structures must be 32-bit aligned, as each structure
  78  * contains 32-bit member fields.  The entire file is mmap'd, so its
  79  * critical that alignment be observed.  It is not generally safe to
  80  * use any 64-bit values in the structures.
  81  */
  82
  83 typedef struct collate_info {
  84         uint8_t directive_count;
  85         uint8_t directive[COLL_WEIGHTS_MAX];
  86         int32_t pri_count[COLL_WEIGHTS_MAX];
  87         int32_t flags;
  88         int32_t chain_count;
  89         int32_t large_count;
  90         int32_t subst_count[COLL_WEIGHTS_MAX];
  91         int32_t undef_pri[COLL_WEIGHTS_MAX];
  92 } collate_info_t;
  93
  94 typedef struct collate_char {
  95         int32_t pri[COLL_WEIGHTS_MAX];
  96 } collate_char_t;
  97
  98 typedef struct collate_chain {
  99         wchar_t str[COLLATE_STR_LEN];
 100         int32_t pri[COLL_WEIGHTS_MAX];
 101 } collate_chain_t;
 102
 103 typedef struct collate_large {
 104         int32_t val;
 105         collate_char_t pri;
 106 } collate_large_t;
 107
 108 typedef struct collate_subst {
 109         int32_t key;
 110         int32_t pri[COLLATE_STR_LEN];
 111 } collate_subst_t;
 112
 113 struct xlocale_collate {
 114         struct xlocale_component header;
 115         int __collate_load_error;
 116         char * map;
 117         size_t maplen;
 118
 119         collate_info_t  *info;
 120         collate_char_t  *char_pri_table;
 121         collate_large_t *large_pri_table;
 122         collate_chain_t *chain_pri_table;
 123         collate_subst_t *subst_table[COLL_WEIGHTS_MAX];
 124 };
 125
 126 __BEGIN_DECLS
 127 int     __collate_load_tables(const char *);
 128 int     __collate_equiv_value(locale_t, const wchar_t *, size_t);
 129 void    _collate_lookup(struct xlocale_collate *,const wchar_t *, int *, int *,
 130         int, const int **);
 131 int     __collate_range_cmp(struct xlocale_collate *, wchar_t, wchar_t);
 132 size_t  _collate_wxfrm(struct xlocale_collate *, const wchar_t *, wchar_t *,
 133         size_t);
 134 size_t  _collate_sxfrm(struct xlocale_collate *, const wchar_t *, char *,
 135         size_t);
 136 __END_DECLS
 137
 138 #endif /* !_COLLATE_H_ */