locale/locale.h

   1 /* Copyright (C) 1991-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 /*
  19  *      ISO C99 Standard: 7.11 Localization     <locale.h>
  20  */
  21
  22 #ifndef _LOCALE_H
  23 #define _LOCALE_H       1
  24
  25 #include <features.h>
  26
  27 #define __need_NULL
  28 #include <stddef.h>
  29 #include <bits/locale.h>
  30
  31 __BEGIN_DECLS
  32
  33 /* These are the possibilities for the first argument to setlocale.
  34    The code assumes that the lowest LC_* symbol has the value zero.  */
  35 #define LC_CTYPE          __LC_CTYPE
  36 #define LC_NUMERIC        __LC_NUMERIC
  37 #define LC_TIME           __LC_TIME
  38 #define LC_COLLATE        __LC_COLLATE
  39 #define LC_MONETARY       __LC_MONETARY
  40 #define LC_MESSAGES       __LC_MESSAGES
  41 #define LC_ALL            __LC_ALL
  42 #define LC_PAPER          __LC_PAPER
  43 #define LC_NAME           __LC_NAME
  44 #define LC_ADDRESS        __LC_ADDRESS
  45 #define LC_TELEPHONE      __LC_TELEPHONE
  46 #define LC_MEASUREMENT    __LC_MEASUREMENT
  47 #define LC_IDENTIFICATION __LC_IDENTIFICATION
  48
  49
  50 __BEGIN_NAMESPACE_STD
  51
  52 /* Structure giving information about numeric and monetary notation.  */
  53 struct lconv
  54 {
  55   /* Numeric (non-monetary) information.  */
  56
  57   char *decimal_point;          /* Decimal point character.  */
  58   char *thousands_sep;          /* Thousands separator.  */
  59   /* Each element is the number of digits in each group;
  60      elements with higher indices are farther left.
  61      An element with value CHAR_MAX means that no further grouping is done.
  62      An element with value 0 means that the previous element is used
  63      for all groups farther left.  */
  64   char *grouping;
  65
  66   /* Monetary information.  */
  67
  68   /* First three chars are a currency symbol from ISO 4217.
  69      Fourth char is the separator.  Fifth char is '\0'.  */
  70   char *int_curr_symbol;
  71   char *currency_symbol;        /* Local currency symbol.  */
  72   char *mon_decimal_point;      /* Decimal point character.  */
  73   char *mon_thousands_sep;      /* Thousands separator.  */
  74   char *mon_grouping;           /* Like `grouping' element (above).  */
  75   char *positive_sign;          /* Sign for positive values.  */
  76   char *negative_sign;          /* Sign for negative values.  */
  77   char int_frac_digits;         /* Int'l fractional digits.  */
  78   char frac_digits;             /* Local fractional digits.  */
  79   /* 1 if currency_symbol precedes a positive value, 0 if succeeds.  */
  80   char p_cs_precedes;
  81   /* 1 iff a space separates currency_symbol from a positive value.  */
  82   char p_sep_by_space;
  83   /* 1 if currency_symbol precedes a negative value, 0 if succeeds.  */
  84   char n_cs_precedes;
  85   /* 1 iff a space separates currency_symbol from a negative value.  */
  86   char n_sep_by_space;
  87   /* Positive and negative sign positions:
  88      0 Parentheses surround the quantity and currency_symbol.
  89      1 The sign string precedes the quantity and currency_symbol.
  90      2 The sign string follows the quantity and currency_symbol.
  91      3 The sign string immediately precedes the currency_symbol.
  92      4 The sign string immediately follows the currency_symbol.  */
  93   char p_sign_posn;
  94   char n_sign_posn;
  95 #ifdef __USE_ISOC99
  96   /* 1 if int_curr_symbol precedes a positive value, 0 if succeeds.  */
  97   char int_p_cs_precedes;
  98   /* 1 iff a space separates int_curr_symbol from a positive value.  */
  99   char int_p_sep_by_space;
 100   /* 1 if int_curr_symbol precedes a negative value, 0 if succeeds.  */
 101   char int_n_cs_precedes;
 102   /* 1 iff a space separates int_curr_symbol from a negative value.  */
 103   char int_n_sep_by_space;
 104   /* Positive and negative sign positions:
 105      0 Parentheses surround the quantity and int_curr_symbol.
 106      1 The sign string precedes the quantity and int_curr_symbol.
 107      2 The sign string follows the quantity and int_curr_symbol.
 108      3 The sign string immediately precedes the int_curr_symbol.
 109      4 The sign string immediately follows the int_curr_symbol.  */
 110   char int_p_sign_posn;
 111   char int_n_sign_posn;
 112 #else
 113   char __int_p_cs_precedes;
 114   char __int_p_sep_by_space;
 115   char __int_n_cs_precedes;
 116   char __int_n_sep_by_space;
 117   char __int_p_sign_posn;
 118   char __int_n_sign_posn;
 119 #endif
 120 };
 121
 122
 123 /* Set and/or return the current locale.  */
 124 extern char *setlocale (int __category, const char *__locale) __THROW;
 125
 126 /* Return the numeric/monetary information for the current locale.  */
 127 extern struct lconv *localeconv (void) __THROW;
 128
 129 __END_NAMESPACE_STD
 130
 131
 132 #ifdef  __USE_XOPEN2K8
 133 /* The concept of one static locale per category is not very well
 134    thought out.  Many applications will need to process its data using
 135    information from several different locales.  Another application is
 136    the implementation of the internationalization handling in the
 137    upcoming ISO C++ standard library.  To support this another set of
 138    the functions using locale data exist which have an additional
 139    argument.
 140
 141    Attention: all these functions are *not* standardized in any form.
 142    This is a proof-of-concept implementation.  */
 143
 144 /* Get locale datatype definition.  */
 145 # include <xlocale.h>
 146
 147 /* Return a reference to a data structure representing a set of locale
 148    datasets.  Unlike for the CATEGORY parameter for `setlocale' the
 149    CATEGORY_MASK parameter here uses a single bit for each category,
 150    made by OR'ing together LC_*_MASK bits above.  */
 151 extern __locale_t newlocale (int __category_mask, const char *__locale,
 152                              __locale_t __base) __THROW;
 153
 154 /* These are the bits that can be set in the CATEGORY_MASK argument to
 155    `newlocale'.  In the GNU implementation, LC_FOO_MASK has the value
 156    of (1 << LC_FOO), but this is not a part of the interface that
 157    callers can assume will be true.  */
 158 # define LC_CTYPE_MASK          (1 << __LC_CTYPE)
 159 # define LC_NUMERIC_MASK        (1 << __LC_NUMERIC)
 160 # define LC_TIME_MASK           (1 << __LC_TIME)
 161 # define LC_COLLATE_MASK        (1 << __LC_COLLATE)
 162 # define LC_MONETARY_MASK       (1 << __LC_MONETARY)
 163 # define LC_MESSAGES_MASK       (1 << __LC_MESSAGES)
 164 # define LC_PAPER_MASK          (1 << __LC_PAPER)
 165 # define LC_NAME_MASK           (1 << __LC_NAME)
 166 # define LC_ADDRESS_MASK        (1 << __LC_ADDRESS)
 167 # define LC_TELEPHONE_MASK      (1 << __LC_TELEPHONE)
 168 # define LC_MEASUREMENT_MASK    (1 << __LC_MEASUREMENT)
 169 # define LC_IDENTIFICATION_MASK (1 << __LC_IDENTIFICATION)
 170 # define LC_ALL_MASK            (LC_CTYPE_MASK \
 171                                  | LC_NUMERIC_MASK \
 172                                  | LC_TIME_MASK \
 173                                  | LC_COLLATE_MASK \
 174                                  | LC_MONETARY_MASK \
 175                                  | LC_MESSAGES_MASK \
 176                                  | LC_PAPER_MASK \
 177                                  | LC_NAME_MASK \
 178                                  | LC_ADDRESS_MASK \
 179                                  | LC_TELEPHONE_MASK \
 180                                  | LC_MEASUREMENT_MASK \
 181                                  | LC_IDENTIFICATION_MASK \
 182                                  )
 183
 184 /* Return a duplicate of the set of locale in DATASET.  All usage
 185    counters are increased if necessary.  */
 186 extern __locale_t duplocale (__locale_t __dataset) __THROW;
 187
 188 /* Free the data associated with a locale dataset previously returned
 189    by a call to `setlocale_r'.  */
 190 extern void freelocale (__locale_t __dataset) __THROW;
 191
 192 /* Switch the current thread's locale to DATASET.
 193    If DATASET is null, instead just return the current setting.
 194    The special value LC_GLOBAL_LOCALE is the initial setting
 195    for all threads and can also be installed any time, meaning
 196    the thread uses the global settings controlled by `setlocale'.  */
 197 extern __locale_t uselocale (__locale_t __dataset) __THROW;
 198
 199 /* This value can be passed to `uselocale' and may be returned by it.
 200    Passing this value to any other function has undefined behavior.  */
 201 # define LC_GLOBAL_LOCALE       ((__locale_t) -1L)
 202
 203 #endif
 204
 205 __END_DECLS
 206
 207 #endif /* locale.h  */