locale/locale.h

   1 /* Copyright (C) 1991,92,95,96,97,98,99,2000 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 Library General Public License as
   6    published by the Free Software Foundation; either version 2 of the
   7    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    Library General Public License for more details.
  13
  14    You should have received a copy of the GNU Library General Public
  15    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  16    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17    Boston, MA 02111-1307, USA.  */
  18
  19 /*
  20  *      ISO C Standard: 4.4 LOCALIZATION        <locale.h>
  21  */
  22
  23 #ifndef _LOCALE_H
  24 #define _LOCALE_H       1
  25
  26 #include <features.h>
  27
  28 #define __need_NULL
  29 #include <stddef.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          0
  36 #define LC_NUMERIC        1
  37 #define LC_TIME           2
  38 #define LC_COLLATE        3
  39 #define LC_MONETARY       4
  40 #define LC_MESSAGES       5
  41 #define LC_ALL            6
  42 #define LC_PAPER          7
  43 #define LC_NAME           8
  44 #define LC_ADDRESS        9
  45 #define LC_TELEPHONE      10
  46 #define LC_MEASUREMENT    11
  47 #define LC_IDENTIFICATION 12
  48
  49
  50 /* Structure giving information about numeric and monetary notation.  */
  51 struct lconv
  52 {
  53   /* Numeric (non-monetary) information.  */
  54
  55   char *decimal_point;          /* Decimal point character.  */
  56   char *thousands_sep;          /* Thousands separator.  */
  57   /* Each element is the number of digits in each group;
  58      elements with higher indices are farther left.
  59      An element with value CHAR_MAX means that no further grouping is done.
  60      An element with value 0 means that the previous element is used
  61      for all groups farther left.  */
  62   char *grouping;
  63
  64   /* Monetary information.  */
  65
  66   /* First three chars are a currency symbol from ISO 4217.
  67      Fourth char is the separator.  Fifth char is '\0'.  */
  68   char *int_curr_symbol;
  69   char *currency_symbol;        /* Local currency symbol.  */
  70   char *mon_decimal_point;      /* Decimal point character.  */
  71   char *mon_thousands_sep;      /* Thousands separator.  */
  72   char *mon_grouping;           /* Like `grouping' element (above).  */
  73   char *positive_sign;          /* Sign for positive values.  */
  74   char *negative_sign;          /* Sign for negative values.  */
  75   char int_frac_digits;         /* Int'l fractional digits.  */
  76   char frac_digits;             /* Local fractional digits.  */
  77   /* 1 if currency_symbol precedes a positive value, 0 if succeeds.  */
  78   char p_cs_precedes;
  79   /* 1 iff a space separates currency_symbol from a positive value.  */
  80   char p_sep_by_space;
  81   /* 1 if currency_symbol precedes a negative value, 0 if succeeds.  */
  82   char n_cs_precedes;
  83   /* 1 iff a space separates currency_symbol from a negative value.  */
  84   char n_sep_by_space;
  85   /* Positive and negative sign positions:
  86      0 Parentheses surround the quantity and currency_symbol.
  87      1 The sign string precedes the quantity and currency_symbol.
  88      2 The sign string follows the quantity and currency_symbol.
  89      3 The sign string immediately precedes the currency_symbol.
  90      4 The sign string immediately follows the currency_symbol.  */
  91   char p_sign_posn;
  92   char n_sign_posn;
  93   /* 1 if int_curr_symbol precedes a positive value, 0 if succeeds.  */
  94   char int_p_cs_precedes;
  95   /* 1 iff a space separates int_curr_symbol from a positive value.  */
  96   char int_p_sep_by_space;
  97   /* 1 if int_curr_symbol precedes a negative value, 0 if succeeds.  */
  98   char int_n_cs_precedes;
  99   /* 1 iff a space separates int_curr_symbol from a negative value.  */
 100   char int_n_sep_by_space;
 101   /* Positive and negative sign positions:
 102      0 Parentheses surround the quantity and int_curr_symbol.
 103      1 The sign string precedes the quantity and int_curr_symbol.
 104      2 The sign string follows the quantity and int_curr_symbol.
 105      3 The sign string immediately precedes the int_curr_symbol.
 106      4 The sign string immediately follows the int_curr_symbol.  */
 107   char int_p_sign_posn;
 108   char int_n_sign_posn;
 109 };
 110
 111
 112 /* Set and/or return the current locale.  */
 113 extern char *setlocale (int __category, __const char *__locale) __THROW;
 114
 115 /* Return the numeric/monetary information for the current locale.  */
 116 extern struct lconv *localeconv (void) __THROW;
 117
 118 #ifdef  __USE_GNU
 119 /* The concept of one static locale per category is not very well
 120    thought out.  Many applications will need to process its data using
 121    information from several different locales.  Another application is
 122    the implementation of the internationalization handling in the
 123    upcoming ISO C++ standard library.  To support this another set of
 124    the functions using locale data exist which have an additional
 125    argument.
 126
 127    Attention: all these functions are *not* standardized in any form.
 128    This is a proof-of-concept implementation.  */
 129
 130 /* Get locale datatype definition.  */
 131 # include <xlocale.h>
 132
 133 /* Return a reference to a data structure representing a set of locale
 134    datasets.  Unlike for the CATEGORY parameter for `setlocale' the
 135    CATEGORY_MASK parameter here uses a single bit for each category.
 136    I.e., 1 << LC_CTYPE means to load data for this category.  If
 137    BASE is non-null the appropriate category information in the BASE
 138    record is replaced.  */
 139 extern __locale_t __newlocale (int __category_mask, __const char *__locale,
 140                                __locale_t __base) __THROW;
 141
 142 /* Return a duplicate of the set of locale in DATASET.  All usage
 143    counters are increased if necessary.  */
 144 extern __locale_t __duplocale (__locale_t __dataset) __THROW;
 145
 146 /* Free the data associated with a locale dataset previously returned
 147    by a call to `setlocale_r'.  */
 148 extern void __freelocale (__locale_t __dataset) __THROW;
 149 #endif
 150
 151 __END_DECLS
 152
 153 #endif /* locale.h  */