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unicode
ulocale.h
// © 2023 and later: Unicode, Inc. and others. // License & terms of use: http://www.unicode.org/copyright.html #ifndef ULOCALE_H #define ULOCALE_H #include "unicode/localpointer.h" #include "unicode/uenum.h" #include "unicode/utypes.h" /** * \file * \brief C API: Locale ID functionality similar to C++ class Locale */ /** * Opaque C service object type for the locale API * @stable ICU 74 */ struct ULocale; /** * C typedef for struct ULocale. * @stable ICU 74 */ typedef struct ULocale ULocale; /** * Constructs an ULocale from the locale ID. * The created ULocale should be destroyed by calling * ulocale_close(); * @param localeID the locale, a const char * pointer (need not be terminated when * the length is non-negative) * @param length the length of the locale; if negative, then the locale need to be * null terminated. * @param err the error code * @return the locale. * * @stable ICU 74 */ U_CAPI ULocale* U_EXPORT2 ulocale_openForLocaleID(const char* localeID, int32_t length, UErrorCode* err); /** * Constructs an ULocale from the provided IETF BCP 47 language tag. * The created ULocale should be destroyed by calling * ulocale_close(); * @param tag the language tag, defined as IETF BCP 47 language tag, const * char* pointer (need not be terminated when the length is non-negative) * @param length the length of the tag; if negative, then the tag need to be * null terminated. * @param err the error code * @return the locale. * * @stable ICU 74 */ U_CAPI ULocale* U_EXPORT2 ulocale_openForLanguageTag(const char* tag, int32_t length, UErrorCode* err); /** * Close the locale and destroy it's internal states. * * @param locale the locale * @stable ICU 74 */ U_CAPI void U_EXPORT2 ulocale_close(ULocale* locale); /** * Returns the locale's ISO-639 language code. * * @param locale the locale * @return the language code of the locale. * @stable ICU 74 */ U_CAPI const char* U_EXPORT2 ulocale_getLanguage(const ULocale* locale); /** * Returns the locale's ISO-15924 abbreviation script code. * * @param locale the locale * @return A pointer to the script. * @stable ICU 74 */ U_CAPI const char* U_EXPORT2 ulocale_getScript(const ULocale* locale); /** * Returns the locale's ISO-3166 region code. * * @param locale the locale * @return A pointer to the region. * @stable ICU 74 */ U_CAPI const char* U_EXPORT2 ulocale_getRegion(const ULocale* locale); /** * Returns the locale's variant code. * * @param locale the locale * @return A pointer to the variant. * @stable ICU 74 */ U_CAPI const char* U_EXPORT2 ulocale_getVariant(const ULocale* locale); /** * Returns the programmatic name of the entire locale, with the language, * country and variant separated by underbars. If a field is missing, up * to two leading underbars will occur. Example: "en", "de_DE", "en_US_WIN", * "de__POSIX", "fr__MAC", "__MAC", "_MT", "_FR_EURO" * * @param locale the locale * @return A pointer to "name". * @stable ICU 74 */ U_CAPI const char* U_EXPORT2 ulocale_getLocaleID(const ULocale* locale); /** * Returns the programmatic name of the entire locale as ulocale_getLocaleID() * would return, but without keywords. * * @param locale the locale * @return A pointer to "base name". * @stable ICU 74 */ U_CAPI const char* U_EXPORT2 ulocale_getBaseName(const ULocale* locale); /** * Gets the bogus state. Locale object can be bogus if it doesn't exist * * @param locale the locale * @return false if it is a real locale, true if it is a bogus locale * @stable ICU 74 */ U_CAPI bool U_EXPORT2 ulocale_isBogus(const ULocale* locale); /** * Gets the list of keywords for the specified locale. * * @param locale the locale * @param err the error code * @return pointer to UEnumeration, or nullptr if there are no keywords. * Client must call uenum_close() to dispose the returned value. * @stable ICU 74 */ U_CAPI UEnumeration* U_EXPORT2 ulocale_getKeywords(const ULocale* locale, UErrorCode *err); /** * Gets the list of unicode keywords for the specified locale. * * @param locale the locale * @param err the error code * @return pointer to UEnumeration, or nullptr if there are no keywords. * Client must call uenum_close() to dispose the returned value. * @stable ICU 74 */ U_CAPI UEnumeration* U_EXPORT2 ulocale_getUnicodeKeywords(const ULocale* locale, UErrorCode *err); /** * Gets the value for a keyword. * * This uses legacy keyword=value pairs, like "collation=phonebook". * * @param locale the locale * @param keyword the keyword, a const char * pointer (need not be * terminated when the length is non-negative) * @param keywordLength the length of the keyword; if negative, then the * keyword need to be null terminated. * @param valueBuffer The buffer to receive the value. * @param valueBufferCapacity The capacity of receiving valueBuffer. * @param err the error code * @stable ICU 74 */ U_CAPI int32_t U_EXPORT2 ulocale_getKeywordValue( const ULocale* locale, const char* keyword, int32_t keywordLength, char* valueBuffer, int32_t valueBufferCapacity, UErrorCode *err); /** * Gets the Unicode value for a Unicode keyword. * * This uses Unicode key-value pairs, like "co-phonebk". * * @param locale the locale * @param keyword the Unicode keyword, a const char * pointer (need not be * terminated when the length is non-negative) * @param keywordLength the length of the Unicode keyword; if negative, * then the keyword need to be null terminated. * @param valueBuffer The buffer to receive the Unicode value. * @param valueBufferCapacity The capacity of receiving valueBuffer. * @param err the error code * @stable ICU 74 */ U_CAPI int32_t U_EXPORT2 ulocale_getUnicodeKeywordValue( const ULocale* locale, const char* keyword, int32_t keywordLength, char* valueBuffer, int32_t valueBufferCapacity, UErrorCode *err); #if U_SHOW_CPLUSPLUS_API U_NAMESPACE_BEGIN /** * \class LocalULocalePointer * "Smart pointer" class, closes a ULocale via ulocale_close(). * For most methods see the LocalPointerBase base class. * * @see LocalPointerBase * @see LocalPointer * @stable ICU 74 */ U_DEFINE_LOCAL_OPEN_POINTER(LocalULocalePointer, ULocale, ulocale_close); U_NAMESPACE_END #endif /* U_SHOW_CPLUSPLUS_API */ #endif /*_ULOCALE */
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