audk/StdLib/Include/locale.h

195 lines
13 KiB
C

/** @file
Localization functions and macros.
Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
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* @(#)locale.h 8.1 (Berkeley) 6/2/93
* $NetBSD: locale.h,v 1.14 2005/02/03 04:39:32 perry Exp
**/
#ifndef _LOCALE_H_
#define _LOCALE_H_
/** This is a structure containing members pertaining to the formatting and display of numeric values.
Each member of this structure is commented with its value in the "C" locale.
The decimal_point member must point to a string with a length greater than zero.
All other pointer members may point to "" in order to indicate that the value is not available
in the current locale, or that it is of zero length. Except for grouping and mon_grouping, the
strings start and end in the initial shift state.
The remaining members, of type char, are non-negative numbers or CHAR_MAX, which indicates that
the value is not available in the current locale.
Members grouping and mon_grouping point to strings where each element (character) of the string
indicates the size of the corresponding group of digits and is interpreted as follows:
- CHAR_MAX No further grouping is to be performed.
- 0 The previous element is to be repeatedly used for the remainder of the digits.
- other The ISO specification states: "The integer value is the number of digits that
compose the current group. The next element is examined to determine the size
of the next group of digits before the current group." The EDK II implementation
interprets this to mean that the groups are specified left-to-right.
The *_sep_by_space members are interpreted as follows:
- 0 No space separates the currency symbol and value.
- 1 If the currency symbol and sign string are adjacent, a space separates them from the
value; otherwise, a space separates the currency symbol from the value.
- 2 If the currency symbol and sign string are adjacent, a space separates them;
otherwise, a space separates the sign string from the value.
For int_p_sep_by_space and int_n_sep_by_space, the fourth character of int_curr_symbol is
used instead of a space.
The values of the *_sign_posn members are interpreted as follows:
- 0 Parentheses surround the quantity and currency symbol.
- 1 The sign string precedes the quantity and currency symbol.
- 2 The sign string succeeds the quantity and currency symbol.
- 3 The sign string immediately precedes the currency symbol.
- 4 The sign string immediately succeeds the currency symbol.
**/
struct lconv {
char *decimal_point; /**< "." Non-monetary decimal-point. */
char *thousands_sep; /**< "" Separates groups of digits before the decimal-point */
char *grouping; /**< "" A string whose elements (characters) indicate the size
of each group of digits in formatted nonmonetary quantities. */
char *int_curr_symbol; /**< "" A 4-character string providing the international currency
symbol. The first three characters contain the alphabetic
international currency symbol in accordance with those
specified in ISO 4217. The fourth character, immediately
preceding the null character, is the character used to separate
the international currency symbol from the monetary quantity. */
char *currency_symbol; /**< "" The local currency symbol for the current locale. */
char *mon_decimal_point; /**< "" The decimal point used for monetary values. */
char *mon_thousands_sep; /**< "" The separator for digit groups preceeding the decimal-point. */
char *mon_grouping; /**< "" A string, like grouping, for monetary values. */
char *positive_sign; /**< "" A string to indicate a non-negative monetary value. */
char *negative_sign; /**< "" A string to indicate a negative monetary value. */
char int_frac_digits; /**< CHAR_MAX The number of digits after the decimal-point for international
monetary values. */
char frac_digits; /**< CHAR_MAX The number of digits after the decimal-point for local
monetary values. */
char p_cs_precedes; /**< CHAR_MAX Set to 1 or 0 if the currency_symbol respectively precedes or
succeeds the value for non-negative local monetary values. */
char p_sep_by_space; /**< CHAR_MAX Value specifying the separation between the currency_symbol,
the sign string, and the value for non-negative local values. */
char n_cs_precedes; /**< CHAR_MAX Set to 1 or 0 if the currency_symbol respectively precedes or
succeeds the value for negative local monetary values. */
char n_sep_by_space; /**< CHAR_MAX Value specifying the separation between the currency_symbol,
the sign string, and the value for negative local values. */
char p_sign_posn; /**< CHAR_MAX Value specifying the positioning of the positive_sign for a
non-negative local monetary quantity. */
char n_sign_posn; /**< CHAR_MAX Value specifying the positioning of the negative_sign for a
negative local monetary quantity. */
char int_p_cs_precedes; /**< CHAR_MAX Set to 1 or 0 if the currency_symbol respectively precedes or
succeeds the value for non-negative international monetary values. */
char int_n_cs_precedes; /**< CHAR_MAX Set to 1 or 0 if the currency_symbol respectively precedes or
succeeds the value for negative international monetary values. */
char int_p_sep_by_space; /**< CHAR_MAX Value specifying the separation between the currency_symbol,
the sign string, and the value for non-negative international values. */
char int_n_sep_by_space; /**< CHAR_MAX Value specifying the separation between the currency_symbol,
the sign string, and the value for negative international values. */
char int_p_sign_posn; /**< CHAR_MAX Value specifying the positioning of the positive_sign for a
non-negative international monetary quantity. */
char int_n_sign_posn; /**< CHAR_MAX Value specifying the positioning of the negative_sign for a
negative international monetary quantity. */
};
/** @{
These macros expand to integer expressions suitable for use as the first
argument (category) to the setlocale() function.
Only the first six macros are required by the C language specification.
Implementations are free to extend this list, as has been done with LC_MESSAGES,
with additional macro definitions, beginning with the characters LC_ and
an uppercase letter.
**/
#define LC_ALL 0 ///< The application's entire locale.
#define LC_COLLATE 1 ///< Affects the behavior of the strcoll and strxfrm functions.
#define LC_CTYPE 2 ///< Affects the behavior of the character handling, multibyte, and wide character functions.
#define LC_MONETARY 3 ///< Affects monetary formatting information.
#define LC_NUMERIC 4 ///< Affects the decimal-point character and non-monetary formatting information.
#define LC_TIME 5 ///< Affects the behavior of the strftime and wcsftime functions.
#define LC_MESSAGES 6
#define _LC_LAST 7 ///< Number of defined macros. Marks end.
/*@}*/
#include <sys/EfiCdefs.h>
/** @fn char *setlocale(int category, const char *locale)
@brief The setlocale function is used to retrieve or change parts or all of the current locale.
@details If locale is NULL, or the same as the current locale, this function just retrieves the
values for the specified category in the current locale. Otherwise, the specified category
in the current locale is set to the corresponding values from the specified locale and a pointer
to the new values is returned.
@param[in] category The portion of the current locale to be affected by this call.
The LC_ macros list the supported categories and the meaning of each.
@param[in] locale A value of "C" for locale specifies the minimal environment for C translation;
A value of "" specifies the native environment, which is "C" for this
implementation. If locale is NULL, the current locale is specified.
@return A pointer to the string associated with the specified category for the new locale,
a pointer to the string associated with the category for the current locale,
or NULL if category or locale can not be honored. The return value should not be
modified by the program, but may be overwritten by subsequent calls to either
setlocale or localeconv.
**/
/** @fn struct lconv *localeconv(void)
@brief The localeconv function returns a pointer to a lconv structure containing the appropriate
values for the current locale.
@return A pointer to a filled-in lconv structure. The returned structure should not be
modified by the program, but may be overwritten by subsequent calls to either
setlocale or localeconv.
**/
__BEGIN_DECLS
#ifdef __SETLOCALE_SOURCE__
char *setlocale(int category, const char *locale);
char *__setlocale(int category, const char *locale);
#else /* !__SETLOCALE_SOURCE__ */
char *setlocale(int category, const char *locale) __RENAME(__setlocale_mb_len_max_32);
#endif /* !__SETLOCALE_SOURCE__ */
struct lconv *localeconv(void);
char *__setlocale_mb_len_max_32(int category, const char *locale);
__END_DECLS
#endif /* _LOCALE_H_ */