locale/xlocale_private.h

   1 /*
   2  * Copyright (c) 2005, 2008 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  */
  23
  24 #ifndef _XLOCALE_PRIVATE_H_
  25 #define _XLOCALE_PRIVATE_H_
  26
  27 #include <sys/cdefs.h>
  28 #define __DARWIN_XLOCALE_PRIVATE
  29 #include <xlocale.h>
  30 #undef __DARWIN_XLOCALE_PRIVATE
  31 #include <stdlib.h>
  32 #include <locale.h>
  33 #include <libkern/OSAtomic.h>
  34 #include <pthread.h>
  35 #include <pthread_spinlock.h>
  36 #include <limits.h>
  37 #include "setlocale.h"
  38 #include "collate.h"
  39 #include "runetype.h"
  40 #include "lmessages.h"
  41 #include "lmonetary.h"
  42 #include "lnumeric.h"
  43 #include "timelocal.h"
  44 #include <TargetConditionals.h>
  45
  46 #undef MB_CUR_MAX
  47 #define MB_CUR_MAX      (__current_locale()->__lc_ctype->__mb_cur_max)
  48 #undef MB_CUR_MAX_L
  49 #define MB_CUR_MAX_L(x) ((x)->__lc_ctype->__mb_cur_max)
  50
  51 typedef void (*__free_extra_t)(void *);
  52
  53 #define XPERMANENT      ((__free_extra_t)-1)
  54 #define XMAGIC          0x786c6f63616c6530LL    /* 'xlocale0' */
  55
  56 #define __STRUCT_COMMON \
  57         int32_t __refcount; \
  58         __free_extra_t __free_extra;
  59
  60 struct __xlocale_st_collate {
  61         __STRUCT_COMMON
  62         char __encoding[ENCODING_LEN + 1];
  63         struct __collate_st_info __info;
  64         struct __collate_st_subst *__substitute_table[COLL_WEIGHTS_MAX];
  65         struct __collate_st_chain_pri *__chain_pri_table;
  66         struct __collate_st_large_char_pri *__large_char_pri_table;
  67         struct __collate_st_char_pri __char_pri_table[UCHAR_MAX + 1];
  68 };
  69 struct __xlocale_st_runelocale {
  70         __STRUCT_COMMON
  71         char __ctype_encoding[ENCODING_LEN + 1];
  72         int __mb_cur_max;
  73         int __mb_sb_limit;
  74         size_t (*__mbrtowc)(wchar_t * __restrict, const char * __restrict,
  75             size_t, __darwin_mbstate_t * __restrict, struct _xlocale *);
  76         int (*__mbsinit)(const __darwin_mbstate_t *, struct _xlocale *);
  77         size_t (*__mbsnrtowcs)(wchar_t * __restrict, const char ** __restrict,
  78             size_t, size_t, __darwin_mbstate_t * __restrict, struct _xlocale *);
  79         size_t (*__wcrtomb)(char * __restrict, wchar_t,
  80             __darwin_mbstate_t * __restrict, struct _xlocale *);
  81         size_t (*__wcsnrtombs)(char * __restrict, const wchar_t ** __restrict,
  82             size_t, size_t, __darwin_mbstate_t * __restrict, struct _xlocale *);
  83         int __datasize;
  84         _RuneLocale _CurrentRuneLocale;
  85 };
  86 struct __xlocale_st_ldpart {
  87         __STRUCT_COMMON
  88         char *_locale_buf;
  89 };
  90 /*
  91  * the next four structures must have the first three fields of the same
  92  * as the _xlocale_st_ldpart structure above.
  93  */
  94 struct __xlocale_st_messages {
  95         __STRUCT_COMMON
  96         char *_messages_locale_buf;
  97         struct lc_messages_T _messages_locale;
  98 };
  99 struct __xlocale_st_monetary {
 100         __STRUCT_COMMON
 101         char *_monetary_locale_buf;
 102         struct lc_monetary_T _monetary_locale;
 103 };
 104 struct __xlocale_st_numeric {
 105         __STRUCT_COMMON
 106         char *_numeric_locale_buf;
 107         struct lc_numeric_T _numeric_locale;
 108 };
 109 struct __xlocale_st_time {
 110         __STRUCT_COMMON
 111         char *_time_locale_buf;
 112         struct lc_time_T _time_locale;
 113 };
 114
 115 /* the extended locale structure */
 116     /* values for __numeric_fp_cvt */
 117 #define LC_NUMERIC_FP_UNINITIALIZED     0
 118 #define LC_NUMERIC_FP_SAME_LOCALE       1
 119 #define LC_NUMERIC_FP_USE_LOCALE        2
 120
 121 struct _xlocale {
 122 /* The item(s) before __magic are not copied when duplicating locale_t's */
 123         __STRUCT_COMMON /* only used for locale_t's in __lc_numeric_loc */
 124         /* 10 independent mbstate_t buffers! */
 125         __darwin_mbstate_t __mbs_mblen;
 126         __darwin_mbstate_t __mbs_mbrlen;
 127         __darwin_mbstate_t __mbs_mbrtowc;
 128         __darwin_mbstate_t __mbs_mbsnrtowcs;
 129         __darwin_mbstate_t __mbs_mbsrtowcs;
 130         __darwin_mbstate_t __mbs_mbtowc;
 131         __darwin_mbstate_t __mbs_wcrtomb;
 132         __darwin_mbstate_t __mbs_wcsnrtombs;
 133         __darwin_mbstate_t __mbs_wcsrtombs;
 134         __darwin_mbstate_t __mbs_wctomb;
 135         pthread_lock_t __lock;
 136 /* magic (Here up to the end is copied when duplicating locale_t's) */
 137         int64_t __magic;
 138 /* flags */
 139         unsigned char __collate_load_error;
 140         unsigned char __collate_substitute_nontrivial;
 141         unsigned char _messages_using_locale;
 142         unsigned char _monetary_using_locale;
 143         unsigned char _numeric_using_locale;
 144         unsigned char _time_using_locale;
 145         unsigned char __mlocale_changed;
 146         unsigned char __nlocale_changed;
 147         unsigned char __numeric_fp_cvt;
 148 /* collate */
 149         struct __xlocale_st_collate *__lc_collate;
 150 /* ctype */
 151         struct __xlocale_st_runelocale *__lc_ctype;
 152 /* messages */
 153         struct __xlocale_st_messages *__lc_messages;
 154 /* monetary */
 155         struct __xlocale_st_monetary *__lc_monetary;
 156 /* numeric */
 157         struct __xlocale_st_numeric *__lc_numeric;
 158         struct _xlocale *__lc_numeric_loc;
 159 /* time */
 160         struct __xlocale_st_time *__lc_time;
 161 /* localeconv */
 162         struct lconv __lc_localeconv;
 163 };
 164
 165 #define DEFAULT_CURRENT_LOCALE(x)       \
 166                                 if ((x) == NULL) { \
 167                                         (x) = __current_locale(); \
 168                                 } else if ((x) == LC_GLOBAL_LOCALE) { \
 169                                         (x) = &__global_locale; \
 170                                 }
 171
 172 #define NORMALIZE_LOCALE(x)     if ((x) == NULL) { \
 173                                         (x) = _c_locale; \
 174                                 } else if ((x) == LC_GLOBAL_LOCALE) { \
 175                                         (x) = &__global_locale; \
 176                                 }
 177
 178 #define XL_LOCK(x)      LOCK((x)->__lock);
 179 #define XL_RELEASE(x)   if ((x) && (x)->__free_extra != XPERMANENT && OSAtomicDecrement32Barrier(&(x)->__refcount) == 0) { \
 180                                 if ((x)->__free_extra) \
 181                                         (*(x)->__free_extra)((x)); \
 182                                 free((x)); \
 183                                 (x) = NULL; \
 184                         }
 185 #define XL_RETAIN(x)    if ((x) && (x)->__free_extra != XPERMANENT) { OSAtomicIncrement32Barrier(&(x)->__refcount); }
 186 #define XL_UNLOCK(x)    UNLOCK((x)->__lock);
 187
 188 __attribute__((visibility("hidden")))
 189 extern struct __xlocale_st_runelocale _DefaultRuneXLocale;
 190
 191 __attribute__((visibility("hidden")))
 192 extern struct _xlocale  __global_locale;
 193
 194 __attribute__((visibility("hidden")))
 195 extern pthread_key_t    __locale_key;
 196
 197 __BEGIN_DECLS
 198
 199 void    __ldpart_free_extra(struct __xlocale_st_ldpart *);
 200 locale_t __numeric_ctype(locale_t);
 201 void    __xlocale_init(void);
 202
 203 static inline __attribute__((always_inline)) locale_t
 204 __current_locale(void)
 205 {
 206 #if TARGET_IPHONE_SIMULATOR
 207         /* <rdar://problem/14136256> Crash in _objc_inform for duplicate class name during simulator launch
 208          * TODO: Remove after the simulator's libSystem is initialized properly.
 209          */
 210         if (__locale_key == (pthread_key_t)-1) {
 211                 return &__global_locale;
 212         }
 213 #endif
 214
 215         locale_t __locale = (locale_t)pthread_getspecific(__locale_key);
 216         return (__locale ? __locale : &__global_locale);
 217 }
 218
 219 static inline __attribute__((always_inline)) locale_t
 220 __locale_ptr(locale_t __loc)
 221 {
 222         NORMALIZE_LOCALE(__loc);
 223         return __loc;
 224 }
 225
 226 __END_DECLS
 227
 228 #endif /* _XLOCALE_PRIVATE_H_ */