Localization library

From Cppreference

C++ Standard Library
Language Utilities library Strings library Containers library Algorithms library Iterators library Numerics library Input/output library Localizations library Regular expressions library (C++11) Atomic operations library (C++11) Thread support library (C++11)
Localizations library
Locales and facets locale use_facet has_facet Character classification isspace isblank (C++11) iscntrl isupper islower isalpha isdigit ispunct isxdigit isalnum isprint isgraph Conversions toupper tolower wstring_convert (C++11) wbuffer_convert (C++11) Facet category base classes ctype_base codecvt_base messages_base time_base money_base Facet categories ctype ctype<char> codecvt collate messages time_get time_put num_get num_put numpunct money_get money_put moneypunct Locale-specific facets ctype_byname ctype_byname<char> codecvt_byname messages_byname collate_byname time_get_byname time_put_byname numpunct_byname moneypunct_byname Code conversion facets codecvt_utf8 (C++11) codecvt_utf16 (C++11) codecvt_utf8_utf16 (C++11) codecvt_mode (C++11) C locale setlocale LC_ALL LC_COLLATE LC_CTYPE localeconf LC_MONETARY LC_NUMERIC LC_TIME lconv

The locale facility includes internationalization support for character classification and string collation, numeric, monetary, and date/time formatting and parsing, and message retrieval. Locale settings control the behavior of stream I/O, regular expression library, and other components of the C++ standard library.

Contents 1 Locales 1.1 Locales and facets 1.2 Character classification 1.3 Character conversions 1.4 String and stream conversions 1.5 Facet category base classes 1.6 Facet categories 1.7 Locale-specific facet categories 2 Locale-independent unicode conversion facets 3 C library locales

[edit] Locales

Defined in header <locale>
Locales and facets
locale	set of polymorphic facets that encapsulate cultural differences (class)
use_facet	obtains a facet from a locale (function template)
has_facet	checks if a locale implements a specific facet (function template)
Character classification
isspace(std::locale)	checks if a character is classified as whitespace by a locale (function template)
isblank(std::locale) (C++11)	checks if a character is classified as a blank character by a locale (function template)
iscntrl(std::locale)	checks if a character is classified as a control character by a locale (function template)
isupper(std::locale)	checks if a character is classified as uppercase by a locale (function template)
islower(std::locale)	checks if a character is classified as lowercase by a locale (function template)
isalpha(std::locale)	checks if a character is classified as alphabetic by a locale (function template)
isdigit(std::locale)	checks if a character is classified as a digit by a locale (function template)
ispunct(std::locale)	checks if a character is classified as punctuation by a locale (function template)
isxdigit(std::locale)	checks if a character is classified as a hexadecimal digit by a locale (function template)
isalnum(std::locale)	checks if a character is classified as alphanumeric by a locale (function template)
isprint(std::locale)	checks if a character is classified as printable by a locale (function template)
isgraph(std::locale)	checks if a character is classfied as graphical by a locale (function template)
Character conversions
toupper(std::locale)	converts a character to uppercase using the ctype facet of a locale (function template)
tolower(std::locale)	converts a character to lowercase using the ctype facet of a locale (function template)
String and stream conversions
wstring_convert (C++11)	performs conversions between a wide string and a byte string (class template)
wbuffer_convert (C++11)	performs conversion between a byte stream buffer and a wide stream buffer (class template)
Facet category base classes
ctype_base	defines character classification categories (class)
codecvt_base	defines character conversion errors (class)
messages_base	defines messages catalog type (class)
time_base	defines date format constants (class)
money_base	defines monetary formatting patterns (class)
Facet categories
ctype	defines character classification tables (class template)
ctype<char>	specialization of std::ctype for type char (class template specialization)
codecvt	converts between character encodings, including UTF-8, UTF-16, UTF-32 (class template)
collate	defines lexicographical comparison and hashing of strings (class template)
messages	implements retrieval of strings from message catalogs (class template)
time_get	parses time/date values from an input character sequence into struct std::tm (class template)
time_put	formats contents of struct std::tm for output as character sequence (class template)
num_get	parses numeric values from an input character sequence (class template)
num_put	formats numeric values for output as character sequence (class template)
numpunct	defines numeric punctuation rules (class template)
money_get	parses and constructs a monetary value from an input character sequence (class template)
money_put	formats a monetary value for output as a character sequence (class template)
moneypunct	defines monetary formatting parameters used by std::money_get and std::money_put (class template)
Locale-specific facet categories
ctype_byname	extends std::ctype for the specified locale (class template)
ctype_byname<char>	extends std::ctype<char> for the specified locale (class template specialization)
codecvt_byname	extends std::codecvt for the specified locale (class template)
messages_byname	extends std::messages for the specified locale (class template)
collate_byname	extends std::collate for the specified locale (class template)
time_get_byname	extends std::time_get for the specified locale (class template)
time_put_byname	extends std::time_put for the specified locale (class template)
numpunct_byname	extends std::numpunct for the specified locale (class template)
moneypunct_byname	extends std::moneypunct for the specified locale (class template)

[edit] Locale-independent unicode conversion facets

Defined in header <codecvt>
codecvt_utf8 (C++11)	converts between UTF-8 and UCS2/UCS4 (class template)
codecvt_utf16 (C++11)	converts between UTF-16 and UCS2/UCS4 (class template)
codecvt_utf8_utf16 (C++11)	converts between UTF-8 and UTF-16 (class template)
codecvt_mode (C++11)	tags to alter behavior of the standard codecvt facets (class)

[edit] C library locales

Defined in header <clocale>
setlocale	gets and sets the current C locale (function)
LC_ALL	full locale category for std::setlocale (macro constant)
LC_COLLATE	string comparison locale category for std::setlocale (macro constant)
LC_CTYPE	character classification locale category for std::setlocale (macro constant)
LC_MONETARY	monetary formatting locale category for std::setlocale (macro constant)
LC_NUMERIC	nonmonetary numeric formatting locale category for std::setlocale (macro constant)
LC_TIME	time formatting locale category for std::setlocale (macro constant)
localeconv	queries numeric and monetary formatting details of the current locale (function)
lconv	formatting details, returned by std::localeconv (class)