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Code Editor : uloc.h
// © 2016 and later: Unicode, Inc. and others. // License & terms of use: http://www.unicode.org/copyright.html /* ********************************************************************** * Copyright (C) 1997-2016, International Business Machines * Corporation and others. All Rights Reserved. ********************************************************************** * * File ULOC.H * * Modification History: * * Date Name Description * 04/01/97 aliu Creation. * 08/22/98 stephen JDK 1.2 sync. * 12/08/98 rtg New C API for Locale * 03/30/99 damiba overhaul * 03/31/99 helena Javadoc for uloc functions. * 04/15/99 Madhu Updated Javadoc ******************************************************************************** */ #ifndef ULOC_H #define ULOC_H #include "unicode/utypes.h" #include "unicode/uenum.h" /** * \file * \brief C API: Locale ID functionality similar to C++ class Locale * * <h2> ULoc C API for Locale </h2> * A <code>Locale</code> represents a specific geographical, political, * or cultural region. An operation that requires a <code>Locale</code> to perform * its task is called <em>locale-sensitive</em> and uses the <code>Locale</code> * to tailor information for the user. For example, displaying a number * is a locale-sensitive operation--the number should be formatted * according to the customs/conventions of the user's native country, * region, or culture. In the C APIs, a locales is simply a const char string. * * <P> * You create a <code>Locale</code> with one of the three options listed below. * Each of the component is separated by '_' in the locale string. * \htmlonly<blockquote>\endhtmlonly * <pre> * \code * newLanguage * * newLanguage + newCountry * * newLanguage + newCountry + newVariant * \endcode * </pre> * \htmlonly</blockquote>\endhtmlonly * The first option is a valid <STRONG>ISO * Language Code.</STRONG> These codes are the lower-case two-letter * codes as defined by ISO-639. * You can find a full list of these codes at a number of sites, such as: * <BR><a href ="http://www.ics.uci.edu/pub/ietf/http/related/iso639.txt"> * http://www.ics.uci.edu/pub/ietf/http/related/iso639.txt</a> * * <P> * The second option includes an additional <STRONG>ISO Country * Code.</STRONG> These codes are the upper-case two-letter codes * as defined by ISO-3166. * You can find a full list of these codes at a number of sites, such as: * <BR><a href="http://www.chemie.fu-berlin.de/diverse/doc/ISO_3166.html"> * http://www.chemie.fu-berlin.de/diverse/doc/ISO_3166.html</a> * * <P> * The third option requires another additional information--the * <STRONG>Variant.</STRONG> * The Variant codes are vendor and browser-specific. * For example, use WIN for Windows, MAC for Macintosh, and POSIX for POSIX. * Where there are two variants, separate them with an underscore, and * put the most important one first. For * example, a Traditional Spanish collation might be referenced, with * "ES", "ES", "Traditional_WIN". * * <P> * Because a <code>Locale</code> is just an identifier for a region, * no validity check is performed when you specify a <code>Locale</code>. * If you want to see whether particular resources are available for the * <code>Locale</code> you asked for, you must query those resources. For * example, ask the <code>UNumberFormat</code> for the locales it supports * using its <code>getAvailable</code> method. * <BR><STRONG>Note:</STRONG> When you ask for a resource for a particular * locale, you get back the best available match, not necessarily * precisely what you asked for. For more information, look at * <code>UResourceBundle</code>. * * <P> * The <code>Locale</code> provides a number of convenient constants * that you can use to specify the commonly used * locales. For example, the following refers to a locale * for the United States: * \htmlonly<blockquote>\endhtmlonly * <pre> * \code * ULOC_US * \endcode * </pre> * \htmlonly</blockquote>\endhtmlonly * * <P> * Once you've specified a locale you can query it for information about * itself. Use <code>uloc_getCountry</code> to get the ISO Country Code and * <code>uloc_getLanguage</code> to get the ISO Language Code. You can * use <code>uloc_getDisplayCountry</code> to get the * name of the country suitable for displaying to the user. Similarly, * you can use <code>uloc_getDisplayLanguage</code> to get the name of * the language suitable for displaying to the user. Interestingly, * the <code>uloc_getDisplayXXX</code> methods are themselves locale-sensitive * and have two versions: one that uses the default locale and one * that takes a locale as an argument and displays the name or country in * a language appropriate to that locale. * * <P> * The ICU provides a number of services that perform locale-sensitive * operations. For example, the <code>unum_xxx</code> functions format * numbers, currency, or percentages in a locale-sensitive manner. * </P> * \htmlonly<blockquote>\endhtmlonly * <pre> * \code * UErrorCode success = U_ZERO_ERROR; * UNumberFormat *nf; * const char* myLocale = "fr_FR"; * * nf = unum_open( UNUM_DEFAULT, NULL, success ); * unum_close(nf); * nf = unum_open( UNUM_CURRENCY, NULL, success ); * unum_close(nf); * nf = unum_open( UNUM_PERCENT, NULL, success ); * unum_close(nf); * \endcode * </pre> * \htmlonly</blockquote>\endhtmlonly * Each of these methods has two variants; one with an explicit locale * and one without; the latter using the default locale. * \htmlonly<blockquote>\endhtmlonly * <pre> * \code * * nf = unum_open( UNUM_DEFAULT, myLocale, success ); * unum_close(nf); * nf = unum_open( UNUM_CURRENCY, myLocale, success ); * unum_close(nf); * nf = unum_open( UNUM_PERCENT, myLocale, success ); * unum_close(nf); * \endcode * </pre> * \htmlonly</blockquote>\endhtmlonly * A <code>Locale</code> is the mechanism for identifying the kind of services * (<code>UNumberFormat</code>) that you would like to get. The locale is * <STRONG>just</STRONG> a mechanism for identifying these services. * * <P> * Each international service that performs locale-sensitive operations * allows you * to get all the available objects of that type. You can sift * through these objects by language, country, or variant, * and use the display names to present a menu to the user. * For example, you can create a menu of all the collation objects * suitable for a given language. Such classes implement these * three class methods: * \htmlonly<blockquote>\endhtmlonly * <pre> * \code * const char* uloc_getAvailable(int32_t index); * int32_t uloc_countAvailable(); * int32_t * uloc_getDisplayName(const char* localeID, * const char* inLocaleID, * UChar* result, * int32_t maxResultSize, * UErrorCode* err); * * \endcode * </pre> * \htmlonly</blockquote>\endhtmlonly * <P> * Concerning POSIX/RFC1766 Locale IDs, * the getLanguage/getCountry/getVariant/getName functions do understand * the POSIX type form of language_COUNTRY.ENCODING\@VARIANT * and if there is not an ICU-stype variant, uloc_getVariant() for example * will return the one listed after the \@at sign. As well, the hyphen * "-" is recognized as a country/variant separator similarly to RFC1766. * So for example, "en-us" will be interpreted as en_US. * As a result, uloc_getName() is far from a no-op, and will have the * effect of converting POSIX/RFC1766 IDs into ICU form, although it does * NOT map any of the actual codes (i.e. russian->ru) in any way. * Applications should call uloc_getName() at the point where a locale ID * is coming from an external source (user entry, OS, web browser) * and pass the resulting string to other ICU functions. For example, * don't use de-de\@EURO as an argument to resourcebundle. * * @see UResourceBundle */ /** Useful constant for this language. @stable ICU 2.0 */ #define ULOC_CHINESE "zh" /** Useful constant for this language. @stable ICU 2.0 */ #define ULOC_ENGLISH "en" /** Useful constant for this language. @stable ICU 2.0 */ #define ULOC_FRENCH "fr" /** Useful constant for this language. @stable ICU 2.0 */ #define ULOC_GERMAN "de" /** Useful constant for this language. @stable ICU 2.0 */ #define ULOC_ITALIAN "it" /** Useful constant for this language. @stable ICU 2.0 */ #define ULOC_JAPANESE "ja" /** Useful constant for this language. @stable ICU 2.0 */ #define ULOC_KOREAN "ko" /** Useful constant for this language. @stable ICU 2.0 */ #define ULOC_SIMPLIFIED_CHINESE "zh_CN" /** Useful constant for this language. @stable ICU 2.0 */ #define ULOC_TRADITIONAL_CHINESE "zh_TW" /** Useful constant for this country/region. @stable ICU 2.0 */ #define ULOC_CANADA "en_CA" /** Useful constant for this country/region. @stable ICU 2.0 */ #define ULOC_CANADA_FRENCH "fr_CA" /** Useful constant for this country/region. @stable ICU 2.0 */ #define ULOC_CHINA "zh_CN" /** Useful constant for this country/region. @stable ICU 2.0 */ #define ULOC_PRC "zh_CN" /** Useful constant for this country/region. @stable ICU 2.0 */ #define ULOC_FRANCE "fr_FR" /** Useful constant for this country/region. @stable ICU 2.0 */ #define ULOC_GERMANY "de_DE" /** Useful constant for this country/region. @stable ICU 2.0 */ #define ULOC_ITALY "it_IT" /** Useful constant for this country/region. @stable ICU 2.0 */ #define ULOC_JAPAN "ja_JP" /** Useful constant for this country/region. @stable ICU 2.0 */ #define ULOC_KOREA "ko_KR" /** Useful constant for this country/region. @stable ICU 2.0 */ #define ULOC_TAIWAN "zh_TW" /** Useful constant for this country/region. @stable ICU 2.0 */ #define ULOC_UK "en_GB" /** Useful constant for this country/region. @stable ICU 2.0 */ #define ULOC_US "en_US" /** * Useful constant for the maximum size of the language part of a locale ID. * (including the terminating NULL). * @stable ICU 2.0 */ #define ULOC_LANG_CAPACITY 12 /** * Useful constant for the maximum size of the country part of a locale ID * (including the terminating NULL). * @stable ICU 2.0 */ #define ULOC_COUNTRY_CAPACITY 4 /** * Useful constant for the maximum size of the whole locale ID * (including the terminating NULL and all keywords). * @stable ICU 2.0 */ #define ULOC_FULLNAME_CAPACITY 157 /** * Useful constant for the maximum size of the script part of a locale ID * (including the terminating NULL). * @stable ICU 2.8 */ #define ULOC_SCRIPT_CAPACITY 6 /** * Useful constant for the maximum size of keywords in a locale * @stable ICU 2.8 */ #define ULOC_KEYWORDS_CAPACITY 96 /** * Useful constant for the maximum total size of keywords and their values in a locale * @stable ICU 2.8 */ #define ULOC_KEYWORD_AND_VALUES_CAPACITY 100 /** * Invariant character separating keywords from the locale string * @stable ICU 2.8 */ #define ULOC_KEYWORD_SEPARATOR '@' /** * Unicode code point for '@' separating keywords from the locale string. * @see ULOC_KEYWORD_SEPARATOR * @stable ICU 4.6 */ #define ULOC_KEYWORD_SEPARATOR_UNICODE 0x40 /** * Invariant character for assigning value to a keyword * @stable ICU 2.8 */ #define ULOC_KEYWORD_ASSIGN '=' /** * Unicode code point for '=' for assigning value to a keyword. * @see ULOC_KEYWORD_ASSIGN * @stable ICU 4.6 */ #define ULOC_KEYWORD_ASSIGN_UNICODE 0x3D /** * Invariant character separating keywords * @stable ICU 2.8 */ #define ULOC_KEYWORD_ITEM_SEPARATOR ';' /** * Unicode code point for ';' separating keywords * @see ULOC_KEYWORD_ITEM_SEPARATOR * @stable ICU 4.6 */ #define ULOC_KEYWORD_ITEM_SEPARATOR_UNICODE 0x3B /** * Constants for *_getLocale() * Allow user to select whether she wants information on * requested, valid or actual locale. * For example, a collator for "en_US_CALIFORNIA" was * requested. In the current state of ICU (2.0), * the requested locale is "en_US_CALIFORNIA", * the valid locale is "en_US" (most specific locale supported by ICU) * and the actual locale is "root" (the collation data comes unmodified * from the UCA) * The locale is considered supported by ICU if there is a core ICU bundle * for that locale (although it may be empty). * @stable ICU 2.1 */ typedef enum { /** This is locale the data actually comes from * @stable ICU 2.1 */ ULOC_ACTUAL_LOCALE = 0, /** This is the most specific locale supported by ICU * @stable ICU 2.1 */ ULOC_VALID_LOCALE = 1, #ifndef U_HIDE_DEPRECATED_API /** This is the requested locale * @deprecated ICU 2.8 */ ULOC_REQUESTED_LOCALE = 2, /** * One more than the highest normal ULocDataLocaleType value. * @deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420. */ ULOC_DATA_LOCALE_TYPE_LIMIT = 3 #endif // U_HIDE_DEPRECATED_API } ULocDataLocaleType; #ifndef U_HIDE_SYSTEM_API /** * Gets ICU's default locale. * The returned string is a snapshot in time, and will remain valid * and unchanged even when uloc_setDefault() is called. * The returned storage is owned by ICU, and must not be altered or deleted * by the caller. * * @return the ICU default locale * @system * @stable ICU 2.0 */ U_CAPI const char* U_EXPORT2 uloc_getDefault(void); /** * Sets ICU's default locale. * By default (without calling this function), ICU's default locale will be based * on information obtained from the underlying system environment. * <p> * Changes to ICU's default locale do not propagate back to the * system environment. * <p> * Changes to ICU's default locale to not affect any ICU services that * may already be open based on the previous default locale value. * * @param localeID the new ICU default locale. A value of NULL will try to get * the system's default locale. * @param status the error information if the setting of default locale fails * @system * @stable ICU 2.0 */ U_CAPI void U_EXPORT2 uloc_setDefault(const char* localeID, UErrorCode* status); #endif /* U_HIDE_SYSTEM_API */ /** * Gets the language code for the specified locale. * * This function may return with a failure error code for certain kinds of inputs * but does not fully check for well-formed locale IDs / language tags. * * @param localeID the locale to get the ISO language code with * @param language the language code for localeID * @param languageCapacity the size of the language buffer to store the * language code with * @param err error information if retrieving the language code failed * @return the actual buffer size needed for the language code. If it's greater * than languageCapacity, the returned language code will be truncated. * @stable ICU 2.0 */ U_CAPI int32_t U_EXPORT2 uloc_getLanguage(const char* localeID, char* language, int32_t languageCapacity, UErrorCode* err); /** * Gets the script code for the specified locale. * * This function may return with a failure error code for certain kinds of inputs * but does not fully check for well-formed locale IDs / language tags. * * @param localeID the locale to get the ISO language code with * @param script the language code for localeID * @param scriptCapacity the size of the language buffer to store the * language code with * @param err error information if retrieving the language code failed * @return the actual buffer size needed for the language code. If it's greater * than scriptCapacity, the returned language code will be truncated. * @stable ICU 2.8 */ U_CAPI int32_t U_EXPORT2 uloc_getScript(const char* localeID, char* script, int32_t scriptCapacity, UErrorCode* err); /** * Gets the country code for the specified locale. * * This function may return with a failure error code for certain kinds of inputs * but does not fully check for well-formed locale IDs / language tags. * * @param localeID the locale to get the country code with * @param country the country code for localeID * @param countryCapacity the size of the country buffer to store the * country code with * @param err error information if retrieving the country code failed * @return the actual buffer size needed for the country code. If it's greater * than countryCapacity, the returned country code will be truncated. * @stable ICU 2.0 */ U_CAPI int32_t U_EXPORT2 uloc_getCountry(const char* localeID, char* country, int32_t countryCapacity, UErrorCode* err); /** * Gets the variant code for the specified locale. * * This function may return with a failure error code for certain kinds of inputs * but does not fully check for well-formed locale IDs / language tags. * * @param localeID the locale to get the variant code with * @param variant the variant code for localeID * @param variantCapacity the size of the variant buffer to store the * variant code with * @param err error information if retrieving the variant code failed * @return the actual buffer size needed for the variant code. If it's greater * than variantCapacity, the returned variant code will be truncated. * @stable ICU 2.0 */ U_CAPI int32_t U_EXPORT2 uloc_getVariant(const char* localeID, char* variant, int32_t variantCapacity, UErrorCode* err); /** * Gets the full name for the specified locale. * * This function may return with a failure error code for certain kinds of inputs * but does not fully check for well-formed locale IDs / language tags. * * Note: This has the effect of 'canonicalizing' the ICU locale ID to * a certain extent. Upper and lower case are set as needed. * It does NOT map aliased names in any way. * See the top of this header file. * This API supports preflighting. * * @param localeID the locale to get the full name with * @param name fill in buffer for the name without keywords. * @param nameCapacity capacity of the fill in buffer. * @param err error information if retrieving the full name failed * @return the actual buffer size needed for the full name. If it's greater * than nameCapacity, the returned full name will be truncated. * @stable ICU 2.0 */ U_CAPI int32_t U_EXPORT2 uloc_getName(const char* localeID, char* name, int32_t nameCapacity, UErrorCode* err); /** * Gets the full name for the specified locale. * Note: This has the effect of 'canonicalizing' the string to * a certain extent. Upper and lower case are set as needed, * and if the components were in 'POSIX' format they are changed to * ICU format. It does NOT map aliased names in any way. * See the top of this header file. * * @param localeID the locale to get the full name with * @param name the full name for localeID * @param nameCapacity the size of the name buffer to store the * full name with * @param err error information if retrieving the full name failed * @return the actual buffer size needed for the full name. If it's greater * than nameCapacity, the returned full name will be truncated. * @stable ICU 2.8 */ U_CAPI int32_t U_EXPORT2 uloc_canonicalize(const char* localeID, char* name, int32_t nameCapacity, UErrorCode* err); /** * Gets the ISO language code for the specified locale. * * @param localeID the locale to get the ISO language code with * @return language the ISO language code for localeID * @stable ICU 2.0 */ U_CAPI const char* U_EXPORT2 uloc_getISO3Language(const char* localeID); /** * Gets the ISO country code for the specified locale. * * @param localeID the locale to get the ISO country code with * @return country the ISO country code for localeID * @stable ICU 2.0 */ U_CAPI const char* U_EXPORT2 uloc_getISO3Country(const char* localeID); /** * Gets the Win32 LCID value for the specified locale. * If the ICU locale is not recognized by Windows, 0 will be returned. * * LCIDs were deprecated with Windows Vista and Microsoft recommends * that developers use BCP47 style tags instead (uloc_toLanguageTag). * * @param localeID the locale to get the Win32 LCID value with * @return country the Win32 LCID for localeID * @stable ICU 2.0 */ U_CAPI uint32_t U_EXPORT2 uloc_getLCID(const char* localeID); /** * Gets the language name suitable for display for the specified locale. * * @param locale the locale to get the ISO language code with * @param displayLocale Specifies the locale to be used to display the name. In * other words, if the locale's language code is "en", passing * Locale::getFrench() for inLocale would result in "Anglais", * while passing Locale::getGerman() for inLocale would result * in "Englisch". * @param language the displayable language code for localeID * @param languageCapacity the size of the language buffer to store the * displayable language code with. * @param status error information if retrieving the displayable language code * failed. U_USING_DEFAULT_WARNING indicates that no data was * found from the locale resources and a case canonicalized * language code is placed into language as fallback. * @return the actual buffer size needed for the displayable language code. If * it's greater than languageCapacity, the returned language * code will be truncated. * @stable ICU 2.0 */ U_CAPI int32_t U_EXPORT2 uloc_getDisplayLanguage(const char* locale, const char* displayLocale, UChar* language, int32_t languageCapacity, UErrorCode* status); /** * Gets the script name suitable for display for the specified locale. * * @param locale the locale to get the displayable script code with. NULL may be * used to specify the default. * @param displayLocale Specifies the locale to be used to display the name. In * other words, if the locale's language code is "en", passing * Locale::getFrench() for inLocale would result in "", while * passing Locale::getGerman() for inLocale would result in "". * NULL may be used to specify the default. * @param script the displayable script for the localeID. * @param scriptCapacity the size of the script buffer to store the displayable * script code with. * @param status error information if retrieving the displayable script code * failed. U_USING_DEFAULT_WARNING indicates that no data was * found from the locale resources and a case canonicalized * script code is placed into script as fallback. * @return the actual buffer size needed for the displayable script code. If * it's greater than scriptCapacity, the returned displayable * script code will be truncated. * @stable ICU 2.8 */ U_CAPI int32_t U_EXPORT2 uloc_getDisplayScript(const char* locale, const char* displayLocale, UChar* script, int32_t scriptCapacity, UErrorCode* status); /** * Gets the country name suitable for display for the specified locale. * Warning: this is for the region part of a valid locale ID; it cannot just be * the region code (like "FR"). To get the display name for a region alone, or * for other options, use ULocaleDisplayNames instead. * * @param locale the locale to get the displayable country code with. NULL may * be used to specify the default. * @param displayLocale Specifies the locale to be used to display the name. In * other words, if the locale's language code is "en", passing * Locale::getFrench() for inLocale would result in "Anglais", * while passing Locale::getGerman() for inLocale would result * in "Englisch". NULL may be used to specify the default. * @param country the displayable country code for localeID. * @param countryCapacity the size of the country buffer to store the * displayable country code with. * @param status error information if retrieving the displayable country code * failed. U_USING_DEFAULT_WARNING indicates that no data was * found from the locale resources and a case canonicalized * country code is placed into country as fallback. * @return the actual buffer size needed for the displayable country code. If * it's greater than countryCapacity, the returned displayable * country code will be truncated. * @stable ICU 2.0 */ U_CAPI int32_t U_EXPORT2 uloc_getDisplayCountry(const char* locale, const char* displayLocale, UChar* country, int32_t countryCapacity, UErrorCode* status); /** * Gets the variant name suitable for display for the specified locale. * * @param locale the locale to get the displayable variant code with. NULL may * be used to specify the default. * @param displayLocale Specifies the locale to be used to display the name. In * other words, if the locale's language code is "en", passing * Locale::getFrench() for inLocale would result in "Anglais", * while passing Locale::getGerman() for inLocale would result * in "Englisch". NULL may be used to specify the default. * @param variant the displayable variant code for localeID. * @param variantCapacity the size of the variant buffer to store the * displayable variant code with. * @param status error information if retrieving the displayable variant code * failed. U_USING_DEFAULT_WARNING indicates that no data was * found from the locale resources and a case canonicalized * variant code is placed into variant as fallback. * @return the actual buffer size needed for the displayable variant code. If * it's greater than variantCapacity, the returned displayable * variant code will be truncated. * @stable ICU 2.0 */ U_CAPI int32_t U_EXPORT2 uloc_getDisplayVariant(const char* locale, const char* displayLocale, UChar* variant, int32_t variantCapacity, UErrorCode* status); /** * Gets the keyword name suitable for display for the specified locale. E.g: * for the locale string de_DE\@collation=PHONEBOOK, this API gets the display * string for the keyword collation. * Usage: * <code> * UErrorCode status = U_ZERO_ERROR; * const char* keyword =NULL; * int32_t keywordLen = 0; * int32_t keywordCount = 0; * UChar displayKeyword[256]; * int32_t displayKeywordLen = 0; * UEnumeration* keywordEnum = uloc_openKeywords("de_DE@collation=PHONEBOOK;calendar=TRADITIONAL", &status); * for(keywordCount = uenum_count(keywordEnum, &status); keywordCount > 0 ; keywordCount--){ * if(U_FAILURE(status)){ * ...something went wrong so handle the error... * break; * } * // the uenum_next returns NUL terminated string * keyword = uenum_next(keywordEnum, &keywordLen, &status); * displayKeywordLen = uloc_getDisplayKeyword(keyword, "en_US", displayKeyword, 256); * ... do something interesting ..... * } * uenum_close(keywordEnum); * </code> * @param keyword The keyword whose display string needs to be returned. * @param displayLocale Specifies the locale to be used to display the name. In other words, * if the locale's language code is "en", passing Locale::getFrench() for * inLocale would result in "Anglais", while passing Locale::getGerman() * for inLocale would result in "Englisch". NULL may be used to specify the default. * @param dest the buffer to which the displayable keyword should be written. * @param destCapacity The size of the buffer (number of UChars). If it is 0, then * dest may be NULL and the function will only return the length of the * result without writing any of the result string (pre-flighting). * @param status error information if retrieving the displayable string failed. * Should not be NULL and should not indicate failure on entry. * U_USING_DEFAULT_WARNING indicates that no data was found from the locale * resources and the keyword is placed into dest as fallback. * @return the actual buffer size needed for the displayable variant code. * @see #uloc_openKeywords * @stable ICU 2.8 */ U_CAPI int32_t U_EXPORT2 uloc_getDisplayKeyword(const char* keyword, const char* displayLocale, UChar* dest, int32_t destCapacity, UErrorCode* status); /** * Gets the value of the keyword suitable for display for the specified locale. * E.g: for the locale string de_DE\@collation=PHONEBOOK, this API gets the display * string for PHONEBOOK, in the display locale, when "collation" is specified as the keyword. * * @param locale The locale to get the displayable variant code with. NULL may be used to specify the default. * @param keyword The keyword for whose value should be used. * @param displayLocale Specifies the locale to be used to display the name. In other words, * if the locale's language code is "en", passing Locale::getFrench() for * inLocale would result in "Anglais", while passing Locale::getGerman() * for inLocale would result in "Englisch". NULL may be used to specify the default. * @param dest the buffer to which the displayable keyword should be written. * @param destCapacity The size of the buffer (number of UChars). If it is 0, then * dest may be NULL and the function will only return the length of the * result without writing any of the result string (pre-flighting). * @param status error information if retrieving the displayable string failed. * Should not be NULL and must not indicate failure on entry. * U_USING_DEFAULT_WARNING indicates that no data was found from the locale * resources and the value of the keyword is placed into dest as fallback. * @return the actual buffer size needed for the displayable variant code. * @stable ICU 2.8 */ U_CAPI int32_t U_EXPORT2 uloc_getDisplayKeywordValue( const char* locale, const char* keyword, const char* displayLocale, UChar* dest, int32_t destCapacity, UErrorCode* status); /** * Gets the full name suitable for display for the specified locale. * * @param localeID the locale to get the displayable name with. NULL may be used to specify the default. * @param inLocaleID Specifies the locale to be used to display the name. In other words, * if the locale's language code is "en", passing Locale::getFrench() for * inLocale would result in "Anglais", while passing Locale::getGerman() * for inLocale would result in "Englisch". NULL may be used to specify the default. * @param result the displayable name for localeID * @param maxResultSize the size of the name buffer to store the * displayable full name with * @param err error information if retrieving the displayable name failed * @return the actual buffer size needed for the displayable name. If it's greater * than maxResultSize, the returned displayable name will be truncated. * @stable ICU 2.0 */ U_CAPI int32_t U_EXPORT2 uloc_getDisplayName(const char* localeID, const char* inLocaleID, UChar* result, int32_t maxResultSize, UErrorCode* err); /** * Gets the specified locale from a list of available locales. * * This method corresponds to uloc_openAvailableByType called with the * ULOC_AVAILABLE_DEFAULT type argument. * * The return value is a pointer to an item of a locale name array. Both this * array and the pointers it contains are owned by ICU and should not be * deleted or written through by the caller. The locale name is terminated by * a null pointer. * * @param n the specific locale name index of the available locale list; * should not exceed the number returned by uloc_countAvailable. * @return a specified locale name of all available locales * @stable ICU 2.0 */ U_CAPI const char* U_EXPORT2 uloc_getAvailable(int32_t n); /** * Gets the size of the all available locale list. * * @return the size of the locale list * @stable ICU 2.0 */ U_CAPI int32_t U_EXPORT2 uloc_countAvailable(void); /** * Types for uloc_getAvailableByType and uloc_countAvailableByType. * * @stable ICU 65 */ typedef enum ULocAvailableType { /** * Locales that return data when passed to ICU APIs, * but not including legacy or alias locales. * * @stable ICU 65 */ ULOC_AVAILABLE_DEFAULT, /** * Legacy or alias locales that return data when passed to ICU APIs. * Examples of supported legacy or alias locales: * * - iw (alias to he) * - mo (alias to ro) * - zh_CN (alias to zh_Hans_CN) * - sr_BA (alias to sr_Cyrl_BA) * - ars (alias to ar_SA) * * The locales in this set are disjoint from the ones in * ULOC_AVAILABLE_DEFAULT. To get both sets at the same time, use * ULOC_AVAILABLE_WITH_LEGACY_ALIASES. * * @stable ICU 65 */ ULOC_AVAILABLE_ONLY_LEGACY_ALIASES, /** * The union of the locales in ULOC_AVAILABLE_DEFAULT and * ULOC_AVAILABLE_ONLY_LEGACY_ALIAS. * * @stable ICU 65 */ ULOC_AVAILABLE_WITH_LEGACY_ALIASES, #ifndef U_HIDE_INTERNAL_API /** * @internal */ ULOC_AVAILABLE_COUNT #endif /* U_HIDE_INTERNAL_API */ } ULocAvailableType; /** * Gets a list of available locales according to the type argument, allowing * the user to access different sets of supported locales in ICU. * * The returned UEnumeration must be closed by the caller. * * @param type Type choice from ULocAvailableType. * @param status Set if an error occurred. * @return a UEnumeration owned by the caller, or nullptr on failure. * @stable ICU 65 */ U_CAPI UEnumeration* U_EXPORT2 uloc_openAvailableByType(ULocAvailableType type, UErrorCode* status); /** * * Gets a list of all available 2-letter language codes defined in ISO 639, * plus additional 3-letter codes determined to be useful for locale generation as * defined by Unicode CLDR. This is a pointer * to an array of pointers to arrays of char. All of these pointers are owned * by ICU-- do not delete them, and do not write through them. The array is * terminated with a null pointer. * @return a list of all available language codes * @stable ICU 2.0 */ U_CAPI const char* const* U_EXPORT2 uloc_getISOLanguages(void); /** * * Gets a list of all available 2-letter country codes defined in ISO 639. This is a * pointer to an array of pointers to arrays of char. All of these pointers are * owned by ICU-- do not delete them, and do not write through them. The array is * terminated with a null pointer. * @return a list of all available country codes * @stable ICU 2.0 */ U_CAPI const char* const* U_EXPORT2 uloc_getISOCountries(void); /** * Truncate the locale ID string to get the parent locale ID. * Copies the part of the string before the last underscore. * The parent locale ID will be an empty string if there is no * underscore, or if there is only one underscore at localeID[0]. * * @param localeID Input locale ID string. * @param parent Output string buffer for the parent locale ID. * @param parentCapacity Size of the output buffer. * @param err A UErrorCode value. * @return The length of the parent locale ID. * @stable ICU 2.0 */ U_CAPI int32_t U_EXPORT2 uloc_getParent(const char* localeID, char* parent, int32_t parentCapacity, UErrorCode* err); /** * Gets the full name for the specified locale, like uloc_getName(), * but without keywords. * * Note: This has the effect of 'canonicalizing' the string to * a certain extent. Upper and lower case are set as needed, * and if the components were in 'POSIX' format they are changed to * ICU format. It does NOT map aliased names in any way. * See the top of this header file. * * This API strips off the keyword part, so "de_DE\@collation=phonebook" * will become "de_DE". * This API supports preflighting. * * @param localeID the locale to get the full name with * @param name fill in buffer for the name without keywords. * @param nameCapacity capacity of the fill in buffer. * @param err error information if retrieving the full name failed * @return the actual buffer size needed for the full name. If it's greater * than nameCapacity, the returned full name will be truncated. * @stable ICU 2.8 */ U_CAPI int32_t U_EXPORT2 uloc_getBaseName(const char* localeID, char* name, int32_t nameCapacity, UErrorCode* err); /** * Gets an enumeration of keywords for the specified locale. Enumeration * must get disposed of by the client using uenum_close function. * * @param localeID the locale to get the variant code with * @param status error information if retrieving the keywords failed * @return enumeration of keywords or NULL if there are no keywords. * @stable ICU 2.8 */ U_CAPI UEnumeration* U_EXPORT2 uloc_openKeywords(const char* localeID, UErrorCode* status); /** * Get the value for a keyword. Locale name does not need to be normalized. * * @param localeID locale name containing the keyword ("de_DE@currency=EURO;collation=PHONEBOOK") * @param keywordName name of the keyword for which we want the value; must not be * NULL or empty, and must consist only of [A-Za-z0-9]. Case insensitive. * @param buffer receiving buffer * @param bufferCapacity capacity of receiving buffer * @param status containing error code: e.g. buffer not big enough or ill-formed localeID * or keywordName parameters. * @return the length of keyword value * @stable ICU 2.8 */ U_CAPI int32_t U_EXPORT2 uloc_getKeywordValue(const char* localeID, const char* keywordName, char* buffer, int32_t bufferCapacity, UErrorCode* status); /** * Sets or removes the value of the specified keyword. * * For removing all keywords, use uloc_getBaseName(). * * NOTE: Unlike almost every other ICU function which takes a * buffer, this function will NOT truncate the output text, and will * not update the buffer with unterminated text setting a status of * U_STRING_NOT_TERMINATED_WARNING. If a BUFFER_OVERFLOW_ERROR is received, * it means a terminated version of the updated locale ID would not fit * in the buffer, and the original buffer is untouched. This is done to * prevent incorrect or possibly even malformed locales from being generated * and used. * * @param keywordName name of the keyword to be set; must not be * NULL or empty, and must consist only of [A-Za-z0-9]. Case insensitive. * @param keywordValue value of the keyword to be set. If 0-length or * NULL, will result in the keyword being removed; no error is given if * that keyword does not exist. Otherwise, must consist only of * [A-Za-z0-9] and [/_+-]. * @param buffer input buffer containing well-formed locale ID to be * modified. * @param bufferCapacity capacity of receiving buffer * @param status containing error code: e.g. buffer not big enough * or ill-formed keywordName or keywordValue parameters, or ill-formed * locale ID in buffer on input. * @return the length needed for the buffer * @see uloc_getKeywordValue * @stable ICU 3.2 */ U_CAPI int32_t U_EXPORT2 uloc_setKeywordValue(const char* keywordName, const char* keywordValue, char* buffer, int32_t bufferCapacity, UErrorCode* status); /** * Returns whether the locale's script is written right-to-left. * If there is no script subtag, then the likely script is used, see uloc_addLikelySubtags(). * If no likely script is known, then false is returned. * * A script is right-to-left according to the CLDR script metadata * which corresponds to whether the script's letters have Bidi_Class=R or AL. * * Returns true for "ar" and "en-Hebr", false for "zh" and "fa-Cyrl". * * @param locale input locale ID * @return true if the locale's script is written right-to-left * @stable ICU 54 */ U_CAPI UBool U_EXPORT2 uloc_isRightToLeft(const char *locale); /** * enums for the return value for the character and line orientation * functions. * @stable ICU 4.0 */ typedef enum { ULOC_LAYOUT_LTR = 0, /* left-to-right. */ ULOC_LAYOUT_RTL = 1, /* right-to-left. */ ULOC_LAYOUT_TTB = 2, /* top-to-bottom. */ ULOC_LAYOUT_BTT = 3, /* bottom-to-top. */ ULOC_LAYOUT_UNKNOWN } ULayoutType; /** * Get the layout character orientation for the specified locale. * * @param localeId locale name * @param status Error status * @return an enum indicating the layout orientation for characters. * @stable ICU 4.0 */ U_CAPI ULayoutType U_EXPORT2 uloc_getCharacterOrientation(const char* localeId, UErrorCode *status); /** * Get the layout line orientation for the specified locale. * * @param localeId locale name * @param status Error status * @return an enum indicating the layout orientation for lines. * @stable ICU 4.0 */ U_CAPI ULayoutType U_EXPORT2 uloc_getLineOrientation(const char* localeId, UErrorCode *status); /** * Output values which uloc_acceptLanguage() writes to the 'outResult' parameter. * * @see uloc_acceptLanguageFromHTTP * @see uloc_acceptLanguage * @stable ICU 3.2 */ typedef enum { /** * No exact match was found. * @stable ICU 3.2 */ ULOC_ACCEPT_FAILED = 0, /** * An exact match was found. * @stable ICU 3.2 */ ULOC_ACCEPT_VALID = 1, /** * A fallback was found. For example, the Accept-Language list includes 'ja_JP' * and is matched with available locale 'ja'. * @stable ICU 3.2 */ ULOC_ACCEPT_FALLBACK = 2 /* */ } UAcceptResult; /** * Based on a HTTP header from a web browser and a list of available locales, * determine an acceptable locale for the user. * * This is a thin wrapper over C++ class LocaleMatcher. * * @param result - buffer to accept the result locale * @param resultAvailable the size of the result buffer. * @param outResult - An out parameter that contains the fallback status * @param httpAcceptLanguage - "Accept-Language:" header as per HTTP. * @param availableLocales - list of available locales to match * @param status ICU error code. Its input value must pass the U_SUCCESS() test, * or else the function returns immediately. Check for U_FAILURE() * on output or use with function chaining. (See User Guide for details.) * @return length needed for the locale. * @stable ICU 3.2 */ U_CAPI int32_t U_EXPORT2 uloc_acceptLanguageFromHTTP(char *result, int32_t resultAvailable, UAcceptResult *outResult, const char *httpAcceptLanguage, UEnumeration* availableLocales, UErrorCode *status); /** * Based on a list of available locales, * determine an acceptable locale for the user. * * This is a thin wrapper over C++ class LocaleMatcher. * * @param result - buffer to accept the result locale * @param resultAvailable the size of the result buffer. * @param outResult - An out parameter that contains the fallback status * @param acceptList - list of acceptable languages * @param acceptListCount - count of acceptList items * @param availableLocales - list of available locales to match * @param status ICU error code. Its input value must pass the U_SUCCESS() test, * or else the function returns immediately. Check for U_FAILURE() * on output or use with function chaining. (See User Guide for details.) * @return length needed for the locale. * @stable ICU 3.2 */ U_CAPI int32_t U_EXPORT2 uloc_acceptLanguage(char *result, int32_t resultAvailable, UAcceptResult *outResult, const char **acceptList, int32_t acceptListCount, UEnumeration* availableLocales, UErrorCode *status); /** * Gets the ICU locale ID for the specified Win32 LCID value. * * @param hostID the Win32 LCID to translate * @param locale the output buffer for the ICU locale ID, which will be NUL-terminated * if there is room. * @param localeCapacity the size of the output buffer * @param status an error is returned if the LCID is unrecognized or the output buffer * is too small * @return actual the actual size of the locale ID, not including NUL-termination * @stable ICU 3.8 */ U_CAPI int32_t U_EXPORT2 uloc_getLocaleForLCID(uint32_t hostID, char *locale, int32_t localeCapacity, UErrorCode *status); /** * Add the likely subtags for a provided locale ID, per the algorithm described * in the following CLDR technical report: * * http://www.unicode.org/reports/tr35/#Likely_Subtags * * If localeID is already in the maximal form, or there is no data available * for maximization, it will be copied to the output buffer. For example, * "sh" cannot be maximized, since there is no reasonable maximization. * * Examples: * * "und_Zzzz" maximizes to "en_Latn_US" * * "en" maximizes to "en_Latn_US" * * "de" maximizes to "de_Latn_DE" * * "sr" maximizes to "sr_Cyrl_RS" * * "zh_Hani" maximizes to "zh_Hani_CN" * * * @param localeID The locale to maximize * @param maximizedLocaleID The maximized locale * @param maximizedLocaleIDCapacity The capacity of the maximizedLocaleID buffer * @param err Error information if maximizing the locale failed. If the length * of the localeID and the null-terminator is greater than the maximum allowed size, * or the localeId is not well-formed, the error code is U_ILLEGAL_ARGUMENT_ERROR. * @return The actual buffer size needed for the maximized locale. If it's * greater than maximizedLocaleIDCapacity, the returned ID will be truncated. * On error, the return value is -1. * @stable ICU 4.0 */ U_CAPI int32_t U_EXPORT2 uloc_addLikelySubtags(const char* localeID, char* maximizedLocaleID, int32_t maximizedLocaleIDCapacity, UErrorCode* err); /** * Minimize the subtags for a provided locale ID, per the algorithm described * in the following CLDR technical report: * * http://www.unicode.org/reports/tr35/#Likely_Subtags * * If localeID is already in the minimal form, or there is no data available * for minimization, it will be copied to the output buffer. Since the * minimization algorithm relies on proper maximization, see the comments * for uloc_addLikelySubtags for reasons why there might not be any data. * * Examples: * * "en_Latn_US" minimizes to "en" * * "de_Latn_US" minimizes to "de" * * "sr_Cyrl_RS" minimizes to "sr" * * "zh_Hant_TW" minimizes to "zh_TW" (The region is preferred to the * script, and minimizing to "zh" would imply "zh_Hans_CN".) * * @param localeID The locale to minimize * @param minimizedLocaleID The minimized locale * @param minimizedLocaleIDCapacity The capacity of the minimizedLocaleID buffer * @param err Error information if minimizing the locale failed. If the length * of the localeID and the null-terminator is greater than the maximum allowed size, * or the localeId is not well-formed, the error code is U_ILLEGAL_ARGUMENT_ERROR. * @return The actual buffer size needed for the minimized locale. If it's * greater than minimizedLocaleIDCapacity, the returned ID will be truncated. * On error, the return value is -1. * @stable ICU 4.0 */ U_CAPI int32_t U_EXPORT2 uloc_minimizeSubtags(const char* localeID, char* minimizedLocaleID, int32_t minimizedLocaleIDCapacity, UErrorCode* err); /** * Returns a locale ID for the specified BCP47 language tag string. * If the specified language tag contains any ill-formed subtags, * the first such subtag and all following subtags are ignored. * <p> * This implements the 'Language-Tag' production of BCP 47, and so * supports legacy language tags (marked as “Type: grandfathered” in BCP 47) * (regular and irregular) as well as private use language tags. * * Private use tags are represented as 'x-whatever', * and legacy tags are converted to their canonical replacements where they exist. * * Note that a few legacy tags have no modern replacement; * these will be converted using the fallback described in * the first paragraph, so some information might be lost. * * @param langtag the input BCP47 language tag. * @param localeID the output buffer receiving a locale ID for the * specified BCP47 language tag. * @param localeIDCapacity the size of the locale ID output buffer. * @param parsedLength if not NULL, successfully parsed length * for the input language tag is set. * @param err error information if receiving the locald ID * failed. * @return the length of the locale ID. * @stable ICU 4.2 */ U_CAPI int32_t U_EXPORT2 uloc_forLanguageTag(const char* langtag, char* localeID, int32_t localeIDCapacity, int32_t* parsedLength, UErrorCode* err); /** * Returns a well-formed language tag for this locale ID. * <p> * <b>Note</b>: When <code>strict</code> is false, any locale * fields which do not satisfy the BCP47 syntax requirement will * be omitted from the result. When <code>strict</code> is * true, this function sets U_ILLEGAL_ARGUMENT_ERROR to the * <code>err</code> if any locale fields do not satisfy the * BCP47 syntax requirement. * @param localeID the input locale ID * @param langtag the output buffer receiving BCP47 language * tag for the locale ID. * @param langtagCapacity the size of the BCP47 language tag * output buffer. * @param strict boolean value indicating if the function returns * an error for an ill-formed input locale ID. * @param err error information if receiving the language * tag failed. * @return The length of the BCP47 language tag. * @stable ICU 4.2 */ U_CAPI int32_t U_EXPORT2 uloc_toLanguageTag(const char* localeID, char* langtag, int32_t langtagCapacity, UBool strict, UErrorCode* err); /** * Converts the specified keyword (legacy key, or BCP 47 Unicode locale * extension key) to the equivalent BCP 47 Unicode locale extension key. * For example, BCP 47 Unicode locale extension key "co" is returned for * the input keyword "collation". * <p> * When the specified keyword is unknown, but satisfies the BCP syntax, * then the pointer to the input keyword itself will be returned. * For example, * <code>uloc_toUnicodeLocaleKey("ZZ")</code> returns "ZZ". * * @param keyword the input locale keyword (either legacy key * such as "collation" or BCP 47 Unicode locale extension * key such as "co"). * @return the well-formed BCP 47 Unicode locale extension key, * or NULL if the specified locale keyword cannot be * mapped to a well-formed BCP 47 Unicode locale extension * key. * @see uloc_toLegacyKey * @stable ICU 54 */ U_CAPI const char* U_EXPORT2 uloc_toUnicodeLocaleKey(const char* keyword); /** * Converts the specified keyword value (legacy type, or BCP 47 * Unicode locale extension type) to the well-formed BCP 47 Unicode locale * extension type for the specified keyword (category). For example, BCP 47 * Unicode locale extension type "phonebk" is returned for the input * keyword value "phonebook", with the keyword "collation" (or "co"). * <p> * When the specified keyword is not recognized, but the specified value * satisfies the syntax of the BCP 47 Unicode locale extension type, * or when the specified keyword allows 'variable' type and the specified * value satisfies the syntax, then the pointer to the input type value itself * will be returned. * For example, * <code>uloc_toUnicodeLocaleType("Foo", "Bar")</code> returns "Bar", * <code>uloc_toUnicodeLocaleType("variableTop", "00A4")</code> returns "00A4". * * @param keyword the locale keyword (either legacy key such as * "collation" or BCP 47 Unicode locale extension * key such as "co"). * @param value the locale keyword value (either legacy type * such as "phonebook" or BCP 47 Unicode locale extension * type such as "phonebk"). * @return the well-formed BCP47 Unicode locale extension type, * or NULL if the locale keyword value cannot be mapped to * a well-formed BCP 47 Unicode locale extension type. * @see uloc_toLegacyType * @stable ICU 54 */ U_CAPI const char* U_EXPORT2 uloc_toUnicodeLocaleType(const char* keyword, const char* value); /** * Converts the specified keyword (BCP 47 Unicode locale extension key, or * legacy key) to the legacy key. For example, legacy key "collation" is * returned for the input BCP 47 Unicode locale extension key "co". * * @param keyword the input locale keyword (either BCP 47 Unicode locale * extension key or legacy key). * @return the well-formed legacy key, or NULL if the specified * keyword cannot be mapped to a well-formed legacy key. * @see toUnicodeLocaleKey * @stable ICU 54 */ U_CAPI const char* U_EXPORT2 uloc_toLegacyKey(const char* keyword); /** * Converts the specified keyword value (BCP 47 Unicode locale extension type, * or legacy type or type alias) to the canonical legacy type. For example, * the legacy type "phonebook" is returned for the input BCP 47 Unicode * locale extension type "phonebk" with the keyword "collation" (or "co"). * <p> * When the specified keyword is not recognized, but the specified value * satisfies the syntax of legacy key, or when the specified keyword * allows 'variable' type and the specified value satisfies the syntax, * then the pointer to the input type value itself will be returned. * For example, * <code>uloc_toLegacyType("Foo", "Bar")</code> returns "Bar", * <code>uloc_toLegacyType("vt", "00A4")</code> returns "00A4". * * @param keyword the locale keyword (either legacy keyword such as * "collation" or BCP 47 Unicode locale extension * key such as "co"). * @param value the locale keyword value (either BCP 47 Unicode locale * extension type such as "phonebk" or legacy keyword value * such as "phonebook"). * @return the well-formed legacy type, or NULL if the specified * keyword value cannot be mapped to a well-formed legacy * type. * @see toUnicodeLocaleType * @stable ICU 54 */ U_CAPI const char* U_EXPORT2 uloc_toLegacyType(const char* keyword, const char* value); #endif /*_ULOC*/
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