nl_langinfo

Description

string nl_langinfo ( int item )

nl_langinfo() is used to access individual elements of the locale categories. Unlike localeconv(), which returns all of the elements, nl_langinfo() allows you to select any specific element.

If item is not valid, FALSE will be returned.

item may be an integer value of the element or the constant name of the element. The following is a list of constant names for item that may be used and their description. Some of these constants may not be defined or hold no value for certain locales.

表格 1. nl_langinfo Constants

Constant	Description
LC_TIME Category Constants
ABDAY_(1-7)	Abbreviated name of n-th day of the week.
DAY_(1-7)	Name of the n-th day of the week (DAY_1 = Sunday).
ABMON_(1-12)	Abbreviated name of the n-th month of the year.
MON_(1-12)	Name of the n-th month of the year.
AM_STR	String for Ante meridian.
PM_STR	String for Post meridian.
D_T_FMT	String that can be used as the format string for strftime() to represent time and date.
D_FMT	String that can be used as the format string for strftime() to represent date.
T_FMT	String that can be used as the format string for strftime() to represent time.
T_FMT_AMPM	String that can be used as the format string for strftime() to represent time in 12-hour format with ante/post meridian.
ERA	Alternate era.
ERA_YEAR	Year in alternate era format.
ERA_D_T_FMT	Date and time in alternate era format (string can be used in strftime()).
ERA_D_FMT	Date in alternate era format (string can be used in strftime()).
ERA_T_FMT	Time in alternate era format (string can be used in strftime()).
LC_MONETARY Category Constants
INT_CURR_SYMBOL	International currency symbol.
CURRENCY_SYMBOL	Local currency symbol.
CRNCYSTR	Same value as CURRENCY_SYMBOL.
MON_DECIMAL_POINT	Decimal point character.
MON_THOUSANDS_SEP	Thousands separator (groups of three digits).
MON_GROUPING	Like 'grouping' element.
POSITIVE_SIGN	Sign for positive values.
NEGATIVE_SIGN	Sign for negative values.
INT_FRAC_DIGITS	International fractional digits.
FRAC_DIGITS	Local fractional digits.
P_CS_PRECEDES	Returns 1 if CURRENCY_SYMBOL precedes a positive value.
P_SEP_BY_SPACE	Returns 1 if a space separates CURRENCY_SYMBOL from a positive value.
N_CS_PRECEDES	Returns 1 if CURRENCY_SYMBOL precedes a negative value.
N_SEP_BY_SPACE	Returns 1 if a space separates CURRENCY_SYMBOL from a negative value.
P_SIGN_POSN	Returns 0 if parentheses surround the quantity and currency_symbol. Returns 1 if the sign string precedes the quantity and currency_symbol. Returns 2 if the sign string follows the quantity and currency_symbol. Returns 3 if the sign string immediately precedes the currency_symbol. Returns 4 if the sign string immediately follows the currency_symbol.
N_SIGN_POSN
LC_NUMERIC Category Constants
DECIMAL_POINT	Decimal point character.
RADIXCHAR	Same value as DECIMAL_POINT.
THOUSANDS_SEP	Separator character for thousands (groups of three digits).
THOUSEP	Same value as THOUSANDS_SEP.
GROUPING
LC_MESSAGES Category Constants
YESEXPR	Regex string for matching 'yes' input.
NOEXPR	Regex string for matching 'no' input.
YESSTR	Output string for 'yes'.
NOSTR	Output string for 'no'.
LC_CTYPE Category Constants
CODESET	Return a string with the name of the character encoding.

注: 本函数未在 Windows 平台下实现。

See also setlocale() and localeconv().