helos1/libc/include/locale.h
2021-10-10 14:11:45 +08:00

115 lines
5.1 KiB
C

/* Localization <locale.h>
This file is part of the Public Domain C Library (PDCLib).
Permission is granted to use, modify, and / or redistribute at will.
*/
#ifndef _PDCLIB_LOCALE_H
#define _PDCLIB_LOCALE_H _PDCLIB_LOCALE_H
#ifdef __cplusplus
extern "C" {
#endif
#include "pdclib/_PDCLIB_internal.h"
#ifndef _PDCLIB_NULL_DEFINED
#define _PDCLIB_NULL_DEFINED _PDCLIB_NULL_DEFINED
#define NULL _PDCLIB_NULL
#endif
/* The structure returned by localeconv().
The values for *_sep_by_space:
0 - no space
1 - if symbol and sign are adjacent, a space separates them from the value;
otherwise a space separates the symbol from the value
2 - if symbol and sign are adjacent, a space separates them; otherwise a
space separates the sign from the value
The values for *_sign_posn:
0 - Parentheses surround value and symbol
1 - sign precedes value and symbol
2 - sign succeeds value and symbol
3 - sign immediately precedes symbol
4 - sign immediately succeeds symbol
*/
struct lconv
{
char * decimal_point; /* decimal point character */ /* LC_NUMERIC */
char * thousands_sep; /* character for separating groups of digits */ /* LC_NUMERIC */
char * grouping; /* string indicating the size of digit groups */ /* LC_NUMERIC */
char * mon_decimal_point; /* decimal point for monetary quantities */ /* LC_MONETARY */
char * mon_thousands_sep; /* thousands_sep for monetary quantities */ /* LC_MONETARY */
char * mon_grouping; /* grouping for monetary quantities */ /* LC_MONETARY */
char * positive_sign; /* string indicating nonnegative mty. qty. */ /* LC_MONETARY */
char * negative_sign; /* string indicating negative mty. qty. */ /* LC_MONETARY */
char * currency_symbol; /* local currency symbol (e.g. '$') */ /* LC_MONETARY */
char * int_curr_symbol; /* international currency symbol (e.g. "USD" */ /* LC_MONETARY */
char frac_digits; /* fractional digits in local monetary qty. */ /* LC_MONETARY */
char p_cs_precedes; /* if currency_symbol precedes positive qty. */ /* LC_MONETARY */
char n_cs_precedes; /* if currency_symbol precedes negative qty. */ /* LC_MONETARY */
char p_sep_by_space; /* if it is separated by space from pos. qty. */ /* LC_MONETARY */
char n_sep_by_space; /* if it is separated by space from neg. qty. */ /* LC_MONETARY */
char p_sign_posn; /* positioning of positive_sign for mon. qty. */ /* LC_MONETARY */
char n_sign_posn; /* positioning of negative_sign for mon. qty. */ /* LC_MONETARY */
char int_frac_digits; /* Same as above, for international format */ /* LC_MONETARY */
char int_p_cs_precedes; /* Same as above, for international format */ /* LC_MONETARY */
char int_n_cs_precedes; /* Same as above, for international format */ /* LC_MONETARY */
char int_p_sep_by_space; /* Same as above, for international format */ /* LC_MONETARY */
char int_n_sep_by_space; /* Same as above, for international format */ /* LC_MONETARY */
char int_p_sign_posn; /* Same as above, for international format */ /* LC_MONETARY */
char int_n_sign_posn; /* Same as above, for international format */ /* LC_MONETARY */
};
/* First arguments to setlocale().
NOTE: If you add to / modify these, look at functions/locale/setlocale.c
and keep things in sync.
*/
/* Entire locale */
#define LC_ALL _PDCLIB_LC_ALL
/* Collation (strcoll(), strxfrm()) */
#define LC_COLLATE _PDCLIB_LC_COLLATE
/* Character types (<ctype.h>, <wctype.h>) */
#define LC_CTYPE _PDCLIB_LC_CTYPE
/* Monetary formatting (as returned by localeconv) */
#define LC_MONETARY _PDCLIB_LC_MONETARY
/* Decimal-point character (for printf() / scanf() functions), string
conversions, nonmonetary formatting as returned by localeconv
*/
#define LC_NUMERIC _PDCLIB_LC_NUMERIC
/* Time formats (strftime(), wcsftime()) */
#define LC_TIME _PDCLIB_LC_TIME
/* Messages (not specified but allowed by C99, and specified by POSIX)
(used by perror() / strerror())
*/
#define LC_MESSAGES _PDCLIB_LC_MESSAGES
/* The category parameter can be any of the LC_* macros to specify if the call
to setlocale() shall affect the entire locale or only a portion thereof.
The category locale specifies which locale should be switched to, with "C"
being the minimal default locale, and "" being the locale-specific native
environment. A NULL pointer makes setlocale() return the *current* setting.
Otherwise, returns a pointer to a string associated with the specified
category for the new locale.
*/
_PDCLIB_PUBLIC char * setlocale( int category, const char * locale );
/* Returns a struct lconv initialized to the values appropriate for the current
locale setting.
*/
_PDCLIB_PUBLIC struct lconv * localeconv( void );
#ifdef __cplusplus
}
#endif
/* Extension hook for downstream projects that want to have non-standard
extensions to standard headers.
*/
#ifdef _PDCLIB_EXTEND_LOCALE_H
#include _PDCLIB_EXTEND_LOCALE_H
#endif
#endif