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Diffstat (limited to 'thirdparty/icu4c/common/unicode/locid.h')
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diff --git a/thirdparty/icu4c/common/unicode/locid.h b/thirdparty/icu4c/common/unicode/locid.h new file mode 100644 index 0000000000..ba858d702a --- /dev/null +++ b/thirdparty/icu4c/common/unicode/locid.h @@ -0,0 +1,1274 @@ +// © 2016 and later: Unicode, Inc. and others. +// License & terms of use: http://www.unicode.org/copyright.html +/* +****************************************************************************** +* +* Copyright (C) 1996-2015, International Business Machines +* Corporation and others. All Rights Reserved. +* +****************************************************************************** +* +* File locid.h +* +* Created by: Helena Shih +* +* Modification History: +* +* Date Name Description +* 02/11/97 aliu Changed gLocPath to fgLocPath and added methods to +* get and set it. +* 04/02/97 aliu Made operator!= inline; fixed return value of getName(). +* 04/15/97 aliu Cleanup for AIX/Win32. +* 04/24/97 aliu Numerous changes per code review. +* 08/18/98 stephen Added tokenizeString(),changed getDisplayName() +* 09/08/98 stephen Moved definition of kEmptyString for Mac Port +* 11/09/99 weiv Added const char * getName() const; +* 04/12/00 srl removing unicodestring api's and cached hash code +* 08/10/01 grhoten Change the static Locales to accessor functions +****************************************************************************** +*/ + +#ifndef LOCID_H +#define LOCID_H + +#include "unicode/utypes.h" + +#if U_SHOW_CPLUSPLUS_API + +#include "unicode/bytestream.h" +#include "unicode/localpointer.h" +#include "unicode/strenum.h" +#include "unicode/stringpiece.h" +#include "unicode/uobject.h" +#include "unicode/putil.h" +#include "unicode/uloc.h" + +/** + * \file + * \brief C++ API: Locale ID object. + */ + +U_NAMESPACE_BEGIN + +// Forward Declarations +void U_CALLCONV locale_available_init(); /**< @internal */ + +class StringEnumeration; +class UnicodeString; + +/** + * A <code>Locale</code> object 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. + * + * The Locale class is not suitable for subclassing. + * + * <P> + * You can create a <code>Locale</code> object using the constructor in + * this class: + * \htmlonly<blockquote>\endhtmlonly + * <pre> + * Locale( const char* language, + * const char* country, + * const char* variant); + * </pre> + * \htmlonly</blockquote>\endhtmlonly + * The first argument to the constructors 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: + * <BR><a href ="http://www.loc.gov/standards/iso639-2/"> + * http://www.loc.gov/standards/iso639-2/</a> + * + * <P> + * The second argument to the constructors is a valid <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.iso.org/iso/en/prods-services/iso3166ma/index.html"> + * http://www.iso.org/iso/en/prods-services/iso3166ma/index.html</a> + * + * <P> + * The third constructor requires a third argument--the <STRONG>Variant.</STRONG> + * The Variant codes are vendor and browser-specific. + * For example, use REVISED for a language's revised script orthography, 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_POSIX". + * + * <P> + * Because a <code>Locale</code> object is just an identifier for a region, + * no validity check is performed when you construct a <code>Locale</code>. + * If you want to see whether particular resources are available for the + * <code>Locale</code> you construct, you must query those resources. For + * example, ask the <code>NumberFormat</code> for the locales it supports + * using its <code>getAvailableLocales</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>ResourceBundle</code>. + * + * <P> + * The <code>Locale</code> class provides a number of convenient constants + * that you can use to create <code>Locale</code> objects for commonly used + * locales. For example, the following refers to a <code>Locale</code> object + * for the United States: + * \htmlonly<blockquote>\endhtmlonly + * <pre> + * Locale::getUS() + * </pre> + * \htmlonly</blockquote>\endhtmlonly + * + * <P> + * Once you've created a <code>Locale</code> you can query it for information about + * itself. Use <code>getCountry</code> to get the ISO Country Code and + * <code>getLanguage</code> to get the ISO Language Code. You can + * use <code>getDisplayCountry</code> to get the + * name of the country suitable for displaying to the user. Similarly, + * you can use <code>getDisplayLanguage</code> to get the name of + * the language suitable for displaying to the user. Interestingly, + * the <code>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> + * ICU provides a number of classes that perform locale-sensitive + * operations. For example, the <code>NumberFormat</code> class formats + * numbers, currency, or percentages in a locale-sensitive manner. Classes + * such as <code>NumberFormat</code> have a number of convenience methods + * for creating a default object of that type. For example, the + * <code>NumberFormat</code> class provides these three convenience methods + * for creating a default <code>NumberFormat</code> object: + * \htmlonly<blockquote>\endhtmlonly + * <pre> + * UErrorCode success = U_ZERO_ERROR; + * Locale myLocale; + * NumberFormat *nf; + * + * nf = NumberFormat::createInstance( success ); delete nf; + * nf = NumberFormat::createCurrencyInstance( success ); delete nf; + * nf = NumberFormat::createPercentInstance( success ); delete nf; + * </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> + * nf = NumberFormat::createInstance( myLocale, success ); delete nf; + * nf = NumberFormat::createCurrencyInstance( myLocale, success ); delete nf; + * nf = NumberFormat::createPercentInstance( myLocale, success ); delete nf; + * </pre> + * \htmlonly</blockquote>\endhtmlonly + * A <code>Locale</code> is the mechanism for identifying the kind of object + * (<code>NumberFormat</code>) that you would like to get. The locale is + * <STRONG>just</STRONG> a mechanism for identifying objects, + * <STRONG>not</STRONG> a container for the objects themselves. + * + * <P> + * Each class 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> + * static Locale* getAvailableLocales(int32_t& numLocales) + * static UnicodeString& getDisplayName(const Locale& objectLocale, + * const Locale& displayLocale, + * UnicodeString& displayName) + * static UnicodeString& getDisplayName(const Locale& objectLocale, + * UnicodeString& displayName) + * </pre> + * \htmlonly</blockquote>\endhtmlonly + * + * @stable ICU 2.0 + * @see ResourceBundle + */ +class U_COMMON_API Locale : public UObject { +public: + /** Useful constant for the Root locale. @stable ICU 4.4 */ + static const Locale &U_EXPORT2 getRoot(void); + /** Useful constant for this language. @stable ICU 2.0 */ + static const Locale &U_EXPORT2 getEnglish(void); + /** Useful constant for this language. @stable ICU 2.0 */ + static const Locale &U_EXPORT2 getFrench(void); + /** Useful constant for this language. @stable ICU 2.0 */ + static const Locale &U_EXPORT2 getGerman(void); + /** Useful constant for this language. @stable ICU 2.0 */ + static const Locale &U_EXPORT2 getItalian(void); + /** Useful constant for this language. @stable ICU 2.0 */ + static const Locale &U_EXPORT2 getJapanese(void); + /** Useful constant for this language. @stable ICU 2.0 */ + static const Locale &U_EXPORT2 getKorean(void); + /** Useful constant for this language. @stable ICU 2.0 */ + static const Locale &U_EXPORT2 getChinese(void); + /** Useful constant for this language. @stable ICU 2.0 */ + static const Locale &U_EXPORT2 getSimplifiedChinese(void); + /** Useful constant for this language. @stable ICU 2.0 */ + static const Locale &U_EXPORT2 getTraditionalChinese(void); + + /** Useful constant for this country/region. @stable ICU 2.0 */ + static const Locale &U_EXPORT2 getFrance(void); + /** Useful constant for this country/region. @stable ICU 2.0 */ + static const Locale &U_EXPORT2 getGermany(void); + /** Useful constant for this country/region. @stable ICU 2.0 */ + static const Locale &U_EXPORT2 getItaly(void); + /** Useful constant for this country/region. @stable ICU 2.0 */ + static const Locale &U_EXPORT2 getJapan(void); + /** Useful constant for this country/region. @stable ICU 2.0 */ + static const Locale &U_EXPORT2 getKorea(void); + /** Useful constant for this country/region. @stable ICU 2.0 */ + static const Locale &U_EXPORT2 getChina(void); + /** Useful constant for this country/region. @stable ICU 2.0 */ + static const Locale &U_EXPORT2 getPRC(void); + /** Useful constant for this country/region. @stable ICU 2.0 */ + static const Locale &U_EXPORT2 getTaiwan(void); + /** Useful constant for this country/region. @stable ICU 2.0 */ + static const Locale &U_EXPORT2 getUK(void); + /** Useful constant for this country/region. @stable ICU 2.0 */ + static const Locale &U_EXPORT2 getUS(void); + /** Useful constant for this country/region. @stable ICU 2.0 */ + static const Locale &U_EXPORT2 getCanada(void); + /** Useful constant for this country/region. @stable ICU 2.0 */ + static const Locale &U_EXPORT2 getCanadaFrench(void); + + + /** + * Construct a default locale object, a Locale for the default locale ID. + * + * @see getDefault + * @see uloc_getDefault + * @stable ICU 2.0 + */ + Locale(); + + /** + * Construct a locale from language, country, variant. + * If an error occurs, then the constructed object will be "bogus" + * (isBogus() will return true). + * + * @param language Lowercase two-letter or three-letter ISO-639 code. + * This parameter can instead be an ICU style C locale (e.g. "en_US"), + * but the other parameters must not be used. + * This parameter can be NULL; if so, + * the locale is initialized to match the current default locale. + * (This is the same as using the default constructor.) + * Please note: The Java Locale class does NOT accept the form + * 'new Locale("en_US")' but only 'new Locale("en","US")' + * + * @param country Uppercase two-letter ISO-3166 code. (optional) + * @param variant Uppercase vendor and browser specific code. See class + * description. (optional) + * @param keywordsAndValues A string consisting of keyword/values pairs, such as + * "collation=phonebook;currency=euro" + * + * @see getDefault + * @see uloc_getDefault + * @stable ICU 2.0 + */ + Locale( const char * language, + const char * country = 0, + const char * variant = 0, + const char * keywordsAndValues = 0); + + /** + * Initializes a Locale object from another Locale object. + * + * @param other The Locale object being copied in. + * @stable ICU 2.0 + */ + Locale(const Locale& other); + + /** + * Move constructor; might leave source in bogus state. + * This locale will have the same contents that the source locale had. + * + * @param other The Locale object being moved in. + * @stable ICU 63 + */ + Locale(Locale&& other) U_NOEXCEPT; + + /** + * Destructor + * @stable ICU 2.0 + */ + virtual ~Locale() ; + + /** + * Replaces the entire contents of *this with the specified value. + * + * @param other The Locale object being copied in. + * @return *this + * @stable ICU 2.0 + */ + Locale& operator=(const Locale& other); + + /** + * Move assignment operator; might leave source in bogus state. + * This locale will have the same contents that the source locale had. + * The behavior is undefined if *this and the source are the same object. + * + * @param other The Locale object being moved in. + * @return *this + * @stable ICU 63 + */ + Locale& operator=(Locale&& other) U_NOEXCEPT; + + /** + * Checks if two locale keys are the same. + * + * @param other The locale key object to be compared with this. + * @return True if the two locale keys are the same, false otherwise. + * @stable ICU 2.0 + */ + UBool operator==(const Locale& other) const; + + /** + * Checks if two locale keys are not the same. + * + * @param other The locale key object to be compared with this. + * @return True if the two locale keys are not the same, false + * otherwise. + * @stable ICU 2.0 + */ + inline UBool operator!=(const Locale& other) const; + + /** + * Clone this object. + * Clones can be used concurrently in multiple threads. + * If an error occurs, then NULL is returned. + * The caller must delete the clone. + * + * @return a clone of this object + * + * @see getDynamicClassID + * @stable ICU 2.8 + */ + Locale *clone() const; + +#ifndef U_HIDE_SYSTEM_API + /** + * Common methods of getting the current default Locale. Used for the + * presentation: menus, dialogs, etc. Generally set once when your applet or + * application is initialized, then never reset. (If you do reset the + * default locale, you probably want to reload your GUI, so that the change + * is reflected in your interface.) + * + * More advanced programs will allow users to use different locales for + * different fields, e.g. in a spreadsheet. + * + * Note that the initial setting will match the host system. + * @return a reference to the Locale object for the default locale ID + * @system + * @stable ICU 2.0 + */ + static const Locale& U_EXPORT2 getDefault(void); + + /** + * Sets the default. Normally set once at the beginning of a process, + * then never reset. + * setDefault() only changes ICU's default locale ID, <strong>not</strong> + * the default locale ID of the runtime environment. + * + * @param newLocale Locale to set to. If NULL, set to the value obtained + * from the runtime environment. + * @param success The error code. + * @system + * @stable ICU 2.0 + */ + static void U_EXPORT2 setDefault(const Locale& newLocale, + UErrorCode& success); +#endif /* U_HIDE_SYSTEM_API */ + + /** + * Returns a Locale 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 tag the input BCP47 language tag. + * @param status error information if creating the Locale failed. + * @return the Locale for the specified BCP47 language tag. + * @stable ICU 63 + */ + static Locale U_EXPORT2 forLanguageTag(StringPiece tag, UErrorCode& status); + + /** + * Returns a well-formed language tag for this Locale. + * <p> + * <b>Note</b>: Any locale fields which do not satisfy the BCP47 syntax + * requirement will be silently omitted from the result. + * + * If this function fails, partial output may have been written to the sink. + * + * @param sink the output sink receiving the BCP47 language + * tag for this Locale. + * @param status error information if creating the language tag failed. + * @stable ICU 63 + */ + void toLanguageTag(ByteSink& sink, UErrorCode& status) const; + + /** + * Returns a well-formed language tag for this Locale. + * <p> + * <b>Note</b>: Any locale fields which do not satisfy the BCP47 syntax + * requirement will be silently omitted from the result. + * + * @param status error information if creating the language tag failed. + * @return the BCP47 language tag for this Locale. + * @stable ICU 63 + */ + template<typename StringClass> + inline StringClass toLanguageTag(UErrorCode& status) const; + + /** + * Creates a locale which has had minimal canonicalization + * as per uloc_getName(). + * @param name The name to create from. If name is null, + * the default Locale is used. + * @return new locale object + * @stable ICU 2.0 + * @see uloc_getName + */ + static Locale U_EXPORT2 createFromName(const char *name); + + /** + * Creates a locale from the given string after canonicalizing + * the string according to CLDR by calling uloc_canonicalize(). + * @param name the locale ID to create from. Must not be NULL. + * @return a new locale object corresponding to the given name + * @stable ICU 3.0 + * @see uloc_canonicalize + */ + static Locale U_EXPORT2 createCanonical(const char* name); + + /** + * Returns the locale's ISO-639 language code. + * @return An alias to the code + * @stable ICU 2.0 + */ + inline const char * getLanguage( ) const; + + /** + * Returns the locale's ISO-15924 abbreviation script code. + * @return An alias to the code + * @see uscript_getShortName + * @see uscript_getCode + * @stable ICU 2.8 + */ + inline const char * getScript( ) const; + + /** + * Returns the locale's ISO-3166 country code. + * @return An alias to the code + * @stable ICU 2.0 + */ + inline const char * getCountry( ) const; + + /** + * Returns the locale's variant code. + * @return An alias to the code + * @stable ICU 2.0 + */ + inline const char * getVariant( ) const; + + /** + * 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" + * @return A pointer to "name". + * @stable ICU 2.0 + */ + inline const char * getName() const; + + /** + * Returns the programmatic name of the entire locale as getName() would return, + * but without keywords. + * @return A pointer to "name". + * @see getName + * @stable ICU 2.8 + */ + const char * getBaseName() const; + + /** + * Add the likely subtags for this Locale, per the algorithm described + * in the following CLDR technical report: + * + * http://www.unicode.org/reports/tr35/#Likely_Subtags + * + * If this Locale is already in the maximal form, or not valid, or there is + * no data available for maximization, the Locale will be unchanged. + * + * For example, "und-Zzzz" cannot be maximized, since there is no + * reasonable maximization. + * + * Examples: + * + * "en" maximizes to "en_Latn_US" + * + * "de" maximizes to "de_Latn_US" + * + * "sr" maximizes to "sr_Cyrl_RS" + * + * "sh" maximizes to "sr_Latn_RS" (Note this will not reverse.) + * + * "zh_Hani" maximizes to "zh_Hans_CN" (Note this will not reverse.) + * + * @param status error information if maximizing this Locale failed. + * If this Locale is not well-formed, the error code is + * U_ILLEGAL_ARGUMENT_ERROR. + * @stable ICU 63 + */ + void addLikelySubtags(UErrorCode& status); + + /** + * Minimize the subtags for this Locale, per the algorithm described + * in the following CLDR technical report: + * + * http://www.unicode.org/reports/tr35/#Likely_Subtags + * + * If this Locale is already in the minimal form, or not valid, or there is + * no data available for minimization, the Locale will be unchanged. + * + * Since the minimization algorithm relies on proper maximization, see the + * comments for 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 status error information if maximizing this Locale failed. + * If this Locale is not well-formed, the error code is + * U_ILLEGAL_ARGUMENT_ERROR. + * @stable ICU 63 + */ + void minimizeSubtags(UErrorCode& status); + +#ifndef U_HIDE_DRAFT_API + /** + * Canonicalize the locale ID of this object according to CLDR. + * @param status the status code + * @draft ICU 67 + * @see createCanonical + */ + void canonicalize(UErrorCode& status); +#endif // U_HIDE_DRAFT_API + + /** + * Gets the list of keywords for the specified locale. + * + * @param status the status code + * @return pointer to StringEnumeration class, or NULL if there are no keywords. + * Client must dispose of it by calling delete. + * @see getKeywords + * @stable ICU 2.8 + */ + StringEnumeration * createKeywords(UErrorCode &status) const; + + /** + * Gets the list of Unicode keywords for the specified locale. + * + * @param status the status code + * @return pointer to StringEnumeration class, or NULL if there are no keywords. + * Client must dispose of it by calling delete. + * @see getUnicodeKeywords + * @stable ICU 63 + */ + StringEnumeration * createUnicodeKeywords(UErrorCode &status) const; + + /** + * Gets the set of keywords for this Locale. + * + * A wrapper to call createKeywords() and write the resulting + * keywords as standard strings (or compatible objects) into any kind of + * container that can be written to by an STL style output iterator. + * + * @param iterator an STL style output iterator to write the keywords to. + * @param status error information if creating set of keywords failed. + * @stable ICU 63 + */ + template<typename StringClass, typename OutputIterator> + inline void getKeywords(OutputIterator iterator, UErrorCode& status) const; + + /** + * Gets the set of Unicode keywords for this Locale. + * + * A wrapper to call createUnicodeKeywords() and write the resulting + * keywords as standard strings (or compatible objects) into any kind of + * container that can be written to by an STL style output iterator. + * + * @param iterator an STL style output iterator to write the keywords to. + * @param status error information if creating set of keywords failed. + * @stable ICU 63 + */ + template<typename StringClass, typename OutputIterator> + inline void getUnicodeKeywords(OutputIterator iterator, UErrorCode& status) const; + + /** + * Gets the value for a keyword. + * + * This uses legacy keyword=value pairs, like "collation=phonebook". + * + * ICU4C doesn't do automatic conversion between legacy and Unicode + * keywords and values in getters and setters (as opposed to ICU4J). + * + * @param keywordName name of the keyword for which we want the value. Case insensitive. + * @param buffer The buffer to receive the keyword value. + * @param bufferCapacity The capacity of receiving buffer + * @param status Returns any error information while performing this operation. + * @return the length of the keyword value + * + * @stable ICU 2.8 + */ + int32_t getKeywordValue(const char* keywordName, char *buffer, int32_t bufferCapacity, UErrorCode &status) const; + + /** + * Gets the value for a keyword. + * + * This uses legacy keyword=value pairs, like "collation=phonebook". + * + * ICU4C doesn't do automatic conversion between legacy and Unicode + * keywords and values in getters and setters (as opposed to ICU4J). + * + * @param keywordName name of the keyword for which we want the value. + * @param sink the sink to receive the keyword value. + * @param status error information if getting the value failed. + * @stable ICU 63 + */ + void getKeywordValue(StringPiece keywordName, ByteSink& sink, UErrorCode& status) const; + + /** + * Gets the value for a keyword. + * + * This uses legacy keyword=value pairs, like "collation=phonebook". + * + * ICU4C doesn't do automatic conversion between legacy and Unicode + * keywords and values in getters and setters (as opposed to ICU4J). + * + * @param keywordName name of the keyword for which we want the value. + * @param status error information if getting the value failed. + * @return the keyword value. + * @stable ICU 63 + */ + template<typename StringClass> + inline StringClass getKeywordValue(StringPiece keywordName, UErrorCode& status) const; + + /** + * Gets the Unicode value for a Unicode keyword. + * + * This uses Unicode key-value pairs, like "co-phonebk". + * + * ICU4C doesn't do automatic conversion between legacy and Unicode + * keywords and values in getters and setters (as opposed to ICU4J). + * + * @param keywordName name of the keyword for which we want the value. + * @param sink the sink to receive the keyword value. + * @param status error information if getting the value failed. + * @stable ICU 63 + */ + void getUnicodeKeywordValue(StringPiece keywordName, ByteSink& sink, UErrorCode& status) const; + + /** + * Gets the Unicode value for a Unicode keyword. + * + * This uses Unicode key-value pairs, like "co-phonebk". + * + * ICU4C doesn't do automatic conversion between legacy and Unicode + * keywords and values in getters and setters (as opposed to ICU4J). + * + * @param keywordName name of the keyword for which we want the value. + * @param status error information if getting the value failed. + * @return the keyword value. + * @stable ICU 63 + */ + template<typename StringClass> + inline StringClass getUnicodeKeywordValue(StringPiece keywordName, UErrorCode& status) const; + + /** + * Sets or removes the value for a keyword. + * + * For removing all keywords, use getBaseName(), + * and construct a new Locale if it differs from getName(). + * + * This uses legacy keyword=value pairs, like "collation=phonebook". + * + * ICU4C doesn't do automatic conversion between legacy and Unicode + * keywords and values in getters and setters (as opposed to ICU4J). + * + * @param keywordName name of the keyword to be set. 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. + * @param status Returns any error information while performing this operation. + * + * @stable ICU 49 + */ + void setKeywordValue(const char* keywordName, const char* keywordValue, UErrorCode &status); + + /** + * Sets or removes the value for a keyword. + * + * For removing all keywords, use getBaseName(), + * and construct a new Locale if it differs from getName(). + * + * This uses legacy keyword=value pairs, like "collation=phonebook". + * + * ICU4C doesn't do automatic conversion between legacy and Unicode + * keywords and values in getters and setters (as opposed to ICU4J). + * + * @param keywordName name of the keyword to be set. + * @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. + * @param status Returns any error information while performing this operation. + * @stable ICU 63 + */ + void setKeywordValue(StringPiece keywordName, StringPiece keywordValue, UErrorCode& status); + + /** + * Sets or removes the Unicode value for a Unicode keyword. + * + * For removing all keywords, use getBaseName(), + * and construct a new Locale if it differs from getName(). + * + * This uses Unicode key-value pairs, like "co-phonebk". + * + * ICU4C doesn't do automatic conversion between legacy and Unicode + * keywords and values in getters and setters (as opposed to ICU4J). + * + * @param keywordName name of the keyword to be set. + * @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. + * @param status Returns any error information while performing this operation. + * @stable ICU 63 + */ + void setUnicodeKeywordValue(StringPiece keywordName, StringPiece keywordValue, UErrorCode& status); + + /** + * returns the locale's three-letter language code, as specified + * in ISO draft standard ISO-639-2. + * @return An alias to the code, or an empty string + * @stable ICU 2.0 + */ + const char * getISO3Language() const; + + /** + * Fills in "name" with the locale's three-letter ISO-3166 country code. + * @return An alias to the code, or an empty string + * @stable ICU 2.0 + */ + const char * getISO3Country() const; + + /** + * Returns the Windows LCID value corresponding to this locale. + * This value is stored in the resource data for the locale as a one-to-four-digit + * hexadecimal number. If the resource is missing, in the wrong format, or + * there is no Windows LCID value that corresponds to this locale, returns 0. + * @stable ICU 2.0 + */ + uint32_t getLCID(void) const; + + /** + * Returns whether this 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". + * + * @return true if the locale's script is written right-to-left + * @stable ICU 54 + */ + UBool isRightToLeft() const; + + /** + * Fills in "dispLang" with the name of this locale's language in a format suitable for + * user display in the default locale. For example, if the locale's language code is + * "fr" and the default locale's language code is "en", this function would set + * dispLang to "French". + * @param dispLang Receives the language's display name. + * @return A reference to "dispLang". + * @stable ICU 2.0 + */ + UnicodeString& getDisplayLanguage(UnicodeString& dispLang) const; + + /** + * Fills in "dispLang" with the name of this locale's language in a format suitable for + * user display in the locale specified by "displayLocale". For example, if the locale's + * language code is "en" and displayLocale's language code is "fr", this function would set + * dispLang to "Anglais". + * @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 + * displayLocale would result in "Anglais", while passing Locale::getGerman() + * for displayLocale would result in "Englisch". + * @param dispLang Receives the language's display name. + * @return A reference to "dispLang". + * @stable ICU 2.0 + */ + UnicodeString& getDisplayLanguage( const Locale& displayLocale, + UnicodeString& dispLang) const; + + /** + * Fills in "dispScript" with the name of this locale's script in a format suitable + * for user display in the default locale. For example, if the locale's script code + * is "LATN" and the default locale's language code is "en", this function would set + * dispScript to "Latin". + * @param dispScript Receives the scripts's display name. + * @return A reference to "dispScript". + * @stable ICU 2.8 + */ + UnicodeString& getDisplayScript( UnicodeString& dispScript) const; + + /** + * Fills in "dispScript" with the name of this locale's country in a format suitable + * for user display in the locale specified by "displayLocale". For example, if the locale's + * script code is "LATN" and displayLocale's language code is "en", this function would set + * dispScript to "Latin". + * @param displayLocale Specifies the locale to be used to display the name. In other + * words, if the locale's script code is "LATN", passing + * Locale::getFrench() for displayLocale would result in "", while + * passing Locale::getGerman() for displayLocale would result in + * "". + * @param dispScript Receives the scripts's display name. + * @return A reference to "dispScript". + * @stable ICU 2.8 + */ + UnicodeString& getDisplayScript( const Locale& displayLocale, + UnicodeString& dispScript) const; + + /** + * Fills in "dispCountry" with the name of this locale's country in a format suitable + * for user display in the default locale. For example, if the locale's country code + * is "FR" and the default locale's language code is "en", this function would set + * dispCountry to "France". + * @param dispCountry Receives the country's display name. + * @return A reference to "dispCountry". + * @stable ICU 2.0 + */ + UnicodeString& getDisplayCountry( UnicodeString& dispCountry) const; + + /** + * Fills in "dispCountry" with the name of this locale's country in a format suitable + * for user display in the locale specified by "displayLocale". For example, if the locale's + * country code is "US" and displayLocale's language code is "fr", this function would set + * dispCountry to "États-Unis". + * @param displayLocale Specifies the locale to be used to display the name. In other + * words, if the locale's country code is "US", passing + * Locale::getFrench() for displayLocale would result in "États-Unis", while + * passing Locale::getGerman() for displayLocale would result in + * "Vereinigte Staaten". + * @param dispCountry Receives the country's display name. + * @return A reference to "dispCountry". + * @stable ICU 2.0 + */ + UnicodeString& getDisplayCountry( const Locale& displayLocale, + UnicodeString& dispCountry) const; + + /** + * Fills in "dispVar" with the name of this locale's variant code in a format suitable + * for user display in the default locale. + * @param dispVar Receives the variant's name. + * @return A reference to "dispVar". + * @stable ICU 2.0 + */ + UnicodeString& getDisplayVariant( UnicodeString& dispVar) const; + + /** + * Fills in "dispVar" with the name of this locale's variant code in a format + * suitable for user display in the locale specified by "displayLocale". + * @param displayLocale Specifies the locale to be used to display the name. + * @param dispVar Receives the variant's display name. + * @return A reference to "dispVar". + * @stable ICU 2.0 + */ + UnicodeString& getDisplayVariant( const Locale& displayLocale, + UnicodeString& dispVar) const; + + /** + * Fills in "name" with the name of this locale in a format suitable for user display + * in the default locale. This function uses getDisplayLanguage(), getDisplayCountry(), + * and getDisplayVariant() to do its work, and outputs the display name in the format + * "language (country[,variant])". For example, if the default locale is en_US, then + * fr_FR's display name would be "French (France)", and es_MX_Traditional's display name + * would be "Spanish (Mexico,Traditional)". + * @param name Receives the locale's display name. + * @return A reference to "name". + * @stable ICU 2.0 + */ + UnicodeString& getDisplayName( UnicodeString& name) const; + + /** + * Fills in "name" with the name of this locale in a format suitable for user display + * in the locale specified by "displayLocale". This function uses getDisplayLanguage(), + * getDisplayCountry(), and getDisplayVariant() to do its work, and outputs the display + * name in the format "language (country[,variant])". For example, if displayLocale is + * fr_FR, then en_US's display name would be "Anglais (États-Unis)", and no_NO_NY's + * display name would be "norvégien (Norvège,NY)". + * @param displayLocale Specifies the locale to be used to display the name. + * @param name Receives the locale's display name. + * @return A reference to "name". + * @stable ICU 2.0 + */ + UnicodeString& getDisplayName( const Locale& displayLocale, + UnicodeString& name) const; + + /** + * Generates a hash code for the locale. + * @stable ICU 2.0 + */ + int32_t hashCode(void) const; + + /** + * Sets the locale to bogus + * A bogus locale represents a non-existing locale associated + * with services that can be instantiated from non-locale data + * in addition to locale (for example, collation can be + * instantiated from a locale and from a rule set). + * @stable ICU 2.1 + */ + void setToBogus(); + + /** + * Gets the bogus state. Locale object can be bogus if it doesn't exist + * @return false if it is a real locale, true if it is a bogus locale + * @stable ICU 2.1 + */ + inline UBool isBogus(void) const; + + /** + * Returns a list of all installed locales. + * @param count Receives the number of locales in the list. + * @return A pointer to an array of Locale objects. This array is the list + * of all locales with installed resource files. The called does NOT + * get ownership of this list, and must NOT delete it. + * @stable ICU 2.0 + */ + static const Locale* U_EXPORT2 getAvailableLocales(int32_t& count); + + /** + * Gets a list of all available 2-letter country codes defined in ISO 3166. 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 + */ + static const char* const* U_EXPORT2 getISOCountries(); + + /** + * Gets a list of all available language 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 language codes + * @stable ICU 2.0 + */ + static const char* const* U_EXPORT2 getISOLanguages(); + + /** + * ICU "poor man's RTTI", returns a UClassID for this class. + * + * @stable ICU 2.2 + */ + static UClassID U_EXPORT2 getStaticClassID(); + + /** + * ICU "poor man's RTTI", returns a UClassID for the actual class. + * + * @stable ICU 2.2 + */ + virtual UClassID getDynamicClassID() const; + + /** + * A Locale iterator interface similar to a Java Iterator<Locale>. + * @stable ICU 65 + */ + class U_COMMON_API Iterator /* not : public UObject because this is an interface/mixin class */ { + public: + /** @stable ICU 65 */ + virtual ~Iterator(); + + /** + * @return true if next() can be called again. + * @stable ICU 65 + */ + virtual UBool hasNext() const = 0; + + /** + * @return the next locale. + * @stable ICU 65 + */ + virtual const Locale &next() = 0; + }; + + /** + * A generic Locale iterator implementation over Locale input iterators. + * @stable ICU 65 + */ + template<typename Iter> + class RangeIterator : public Iterator, public UMemory { + public: + /** + * Constructs an iterator from a begin/end range. + * Each of the iterator parameter values must be an + * input iterator whose value is convertible to const Locale &. + * + * @param begin Start of range. + * @param end Exclusive end of range. + * @stable ICU 65 + */ + RangeIterator(Iter begin, Iter end) : it_(begin), end_(end) {} + + /** + * @return true if next() can be called again. + * @stable ICU 65 + */ + UBool hasNext() const override { return it_ != end_; } + + /** + * @return the next locale. + * @stable ICU 65 + */ + const Locale &next() override { return *it_++; } + + private: + Iter it_; + const Iter end_; + }; + + /** + * A generic Locale iterator implementation over Locale input iterators. + * Calls the converter to convert each *begin to a const Locale &. + * @stable ICU 65 + */ + template<typename Iter, typename Conv> + class ConvertingIterator : public Iterator, public UMemory { + public: + /** + * Constructs an iterator from a begin/end range. + * Each of the iterator parameter values must be an + * input iterator whose value the converter converts to const Locale &. + * + * @param begin Start of range. + * @param end Exclusive end of range. + * @param converter Converter from *begin to const Locale & or compatible. + * @stable ICU 65 + */ + ConvertingIterator(Iter begin, Iter end, Conv converter) : + it_(begin), end_(end), converter_(converter) {} + + /** + * @return true if next() can be called again. + * @stable ICU 65 + */ + UBool hasNext() const override { return it_ != end_; } + + /** + * @return the next locale. + * @stable ICU 65 + */ + const Locale &next() override { return converter_(*it_++); } + + private: + Iter it_; + const Iter end_; + Conv converter_; + }; + +protected: /* only protected for testing purposes. DO NOT USE. */ +#ifndef U_HIDE_INTERNAL_API + /** + * Set this from a single POSIX style locale string. + * @internal + */ + void setFromPOSIXID(const char *posixID); +#endif /* U_HIDE_INTERNAL_API */ + +private: + /** + * Initialize the locale object with a new name. + * Was deprecated - used in implementation - moved internal + * + * @param cLocaleID The new locale name. + * @param canonicalize whether to call uloc_canonicalize on cLocaleID + */ + Locale& init(const char* cLocaleID, UBool canonicalize); + + /* + * Internal constructor to allow construction of a locale object with + * NO side effects. (Default constructor tries to get + * the default locale.) + */ + enum ELocaleType { + eBOGUS + }; + Locale(ELocaleType); + + /** + * Initialize the locale cache for commonly used locales + */ + static Locale *getLocaleCache(void); + + char language[ULOC_LANG_CAPACITY]; + char script[ULOC_SCRIPT_CAPACITY]; + char country[ULOC_COUNTRY_CAPACITY]; + int32_t variantBegin; + char* fullName; + char fullNameBuffer[ULOC_FULLNAME_CAPACITY]; + // name without keywords + char* baseName; + void initBaseName(UErrorCode& status); + + UBool fIsBogus; + + static const Locale &getLocale(int locid); + + /** + * A friend to allow the default locale to be set by either the C or C++ API. + * @internal (private) + */ + friend Locale *locale_set_default_internal(const char *, UErrorCode& status); + + /** + * @internal (private) + */ + friend void U_CALLCONV locale_available_init(); +}; + +inline UBool +Locale::operator!=(const Locale& other) const +{ + return !operator==(other); +} + +template<typename StringClass> inline StringClass +Locale::toLanguageTag(UErrorCode& status) const +{ + StringClass result; + StringByteSink<StringClass> sink(&result); + toLanguageTag(sink, status); + return result; +} + +inline const char * +Locale::getCountry() const +{ + return country; +} + +inline const char * +Locale::getLanguage() const +{ + return language; +} + +inline const char * +Locale::getScript() const +{ + return script; +} + +inline const char * +Locale::getVariant() const +{ + return &baseName[variantBegin]; +} + +inline const char * +Locale::getName() const +{ + return fullName; +} + +template<typename StringClass, typename OutputIterator> inline void +Locale::getKeywords(OutputIterator iterator, UErrorCode& status) const +{ + LocalPointer<StringEnumeration> keys(createKeywords(status)); + if (U_FAILURE(status) || keys.isNull()) { + return; + } + for (;;) { + int32_t resultLength; + const char* buffer = keys->next(&resultLength, status); + if (U_FAILURE(status) || buffer == nullptr) { + return; + } + *iterator++ = StringClass(buffer, resultLength); + } +} + +template<typename StringClass, typename OutputIterator> inline void +Locale::getUnicodeKeywords(OutputIterator iterator, UErrorCode& status) const +{ + LocalPointer<StringEnumeration> keys(createUnicodeKeywords(status)); + if (U_FAILURE(status) || keys.isNull()) { + return; + } + for (;;) { + int32_t resultLength; + const char* buffer = keys->next(&resultLength, status); + if (U_FAILURE(status) || buffer == nullptr) { + return; + } + *iterator++ = StringClass(buffer, resultLength); + } +} + +template<typename StringClass> inline StringClass +Locale::getKeywordValue(StringPiece keywordName, UErrorCode& status) const +{ + StringClass result; + StringByteSink<StringClass> sink(&result); + getKeywordValue(keywordName, sink, status); + return result; +} + +template<typename StringClass> inline StringClass +Locale::getUnicodeKeywordValue(StringPiece keywordName, UErrorCode& status) const +{ + StringClass result; + StringByteSink<StringClass> sink(&result); + getUnicodeKeywordValue(keywordName, sink, status); + return result; +} + +inline UBool +Locale::isBogus(void) const { + return fIsBogus; +} + +U_NAMESPACE_END + +#endif /* U_SHOW_CPLUSPLUS_API */ + +#endif |