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// © 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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