668 lines
27 KiB
C++
668 lines
27 KiB
C++
/*
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*****************************************************************************************
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*
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* Copyright (C) 1996-1999, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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*****************************************************************************************
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*
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* File locid.h
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*
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* Created by: Helena Shih
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*
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* Modification History:
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*
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* Date Name Description
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* 02/11/97 aliu Changed gLocPath to fgLocPath and added methods to
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* get and set it.
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* 04/02/97 aliu Made operator!= inline; fixed return value of getName().
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* 04/15/97 aliu Cleanup for AIX/Win32.
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* 04/24/97 aliu Numerous changes per code review.
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* 08/18/98 stephen Added tokenizeString(),changed getDisplayName()
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* 09/08/98 stephen Moved definition of kEmptyString for Mac Port
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* 11/09/99 weiv Added const char * getName() const;
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* 04/12/00 srl removing unicodestring api's and cached hash code
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*****************************************************************************************
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*/
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#ifndef LOCID_H
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#define LOCID_H
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#include "unicode/putil.h"
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#define ULOC_LANG_CAPACITY 3
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#define ULOC_COUNTRY_CAPACITY 3
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#define ULOC_FULLNAME_CAPACITY 50
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#ifdef XP_CPLUSPLUS
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#include "unicode/unistr.h"
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typedef struct ULocale ULocale;
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typedef struct UHashtable UHashtable;
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/**
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*
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* A <code>Locale</code> object represents a specific geographical, political,
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* or cultural region. An operation that requires a <code>Locale</code> to perform
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* its task is called <em>locale-sensitive</em> and uses the <code>Locale</code>
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* to tailor information for the user. For example, displaying a number
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* is a locale-sensitive operation--the number should be formatted
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* according to the customs/conventions of the user's native country,
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* region, or culture.
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*
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* <P>
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* You create a <code>Locale</code> object using the constructor in
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* this class:
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* <blockquote>
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* <pre>
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* . Locale( const char* language,
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* . const char* country,
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* . const char* variant);
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* </pre>
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* </blockquote>
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* The first argument to the constructors is a valid <STRONG>ISO
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* Language Code.</STRONG> These codes are the lower-case two-letter
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* codes as defined by ISO-639.
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* You can find a full list of these codes at a number of sites, such as:
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* <BR><a href ="http://www.ics.uci.edu/pub/ietf/http/related/iso639.txt">
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* <code>http://www.ics.uci.edu/pub/ietf/http/related/iso639.txt</code></a>
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*
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* <P>
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* The second argument to the constructors is a valid <STRONG>ISO Country
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* Code.</STRONG> These codes are the upper-case two-letter codes
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* as defined by ISO-3166.
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* You can find a full list of these codes at a number of sites, such as:
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* <BR><a href="http://www.chemie.fu-berlin.de/diverse/doc/ISO_3166.html">
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* <code>http://www.chemie.fu-berlin.de/diverse/doc/ISO_3166.html</code></a>
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*
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* <P>
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* The third constructor requires a third argument--the <STRONG>Variant.</STRONG>
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* The Variant codes are vendor and browser-specific.
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* For example, use WIN for Windows, MAC for Macintosh, and POSIX for POSIX.
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* Where there are two variants, separate them with an underscore, and
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* put the most important one first. For
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* example, a Traditional Spanish collation might be referenced, with
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* "ES", "ES", "Traditional_WIN".
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*
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* <P>
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* Because a <code>Locale</code> object is just an identifier for a region,
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* no validity check is performed when you construct a <code>Locale</code>.
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* If you want to see whether particular resources are available for the
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* <code>Locale</code> you construct, you must query those resources. For
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* example, ask the <code>NumberFormat</code> for the locales it supports
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* using its <code>getAvailableLocales</code> method.
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* <BR><STRONG>Note:</STRONG> When you ask for a resource for a particular
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* locale, you get back the best available match, not necessarily
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* precisely what you asked for. For more information, look at
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* <a href="java.util.ResourceBundle.html"><code>ResourceBundle</code></a>.
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*
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* <P>
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* The <code>Locale</code> class provides a number of convenient constants
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* that you can use to create <code>Locale</code> objects for commonly used
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* locales. For example, the following refers to a <code>Locale</code> object
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* for the United States:
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* <blockquote>
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* <pre>
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* . Locale::US
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* </pre>
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* </blockquote>
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*
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* <P>
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* Once you've created a <code>Locale</code> you can query it for information about
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* itself. Use <code>getCountry</code> to get the ISO Country Code and
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* <code>getLanguage</code> to get the ISO Language Code. You can
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* use <code>getDisplayCountry</code> to get the
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* name of the country suitable for displaying to the user. Similarly,
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* you can use <code>getDisplayLanguage</code> to get the name of
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* the language suitable for displaying to the user. Interestingly,
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* the <code>getDisplayXXX</code> methods are themselves locale-sensitive
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* and have two versions: one that uses the default locale and one
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* that takes a locale as an argument and displays the name or country in
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* a language appropriate to that locale.
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*
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* <P>
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* The TIFC provides a number of classes that perform locale-sensitive
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* operations. For example, the <code>NumberFormat</code> class formats
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* numbers, currency, or percentages in a locale-sensitive manner. Classes
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* such as <code>NumberFormat</code> have a number of convenience methods
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* for creating a default object of that type. For example, the
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* <code>NumberFormat</code> class provides these three convenience methods
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* for creating a default <code>NumberFormat</code> object:
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* <blockquote>
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* <pre>
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* . UErrorCode success = U_ZERO_ERROR;
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* . Locale myLocale;
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* . NumberFormat *nf;
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* .
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* . nf = NumberFormat::createInstance( success ); delete nf;
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* . nf = NumberFormat::createCurrencyInstance( success ); delete nf;
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* . nf = NumberFormat::createPercentInstance( success ); delete nf;
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* </pre>
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* </blockquote>
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* Each of these methods has two variants; one with an explicit locale
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* and one without; the latter using the default locale.
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* <blockquote>
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* <pre>
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* . nf = NumberFormat::createInstance( myLocale, success ); delete nf;
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* . nf = NumberFormat::createCurrencyInstance( myLocale, success ); delete nf;
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* . nf = NumberFormat::createPercentInstance( myLocale, success ); delete nf;
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* </pre>
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* </blockquote>
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* A <code>Locale</code> is the mechanism for identifying the kind of object
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* (<code>NumberFormat</code>) that you would like to get. The locale is
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* <STRONG>just</STRONG> a mechanism for identifying objects,
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* <STRONG>not</STRONG> a container for the objects themselves.
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*
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* <P>
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* Each class that performs locale-sensitive operations allows you
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* to get all the available objects of that type. You can sift
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* through these objects by language, country, or variant,
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* and use the display names to present a menu to the user.
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* For example, you can create a menu of all the collation objects
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* suitable for a given language. Such classes implement these
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* three class methods:
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* <blockquote>
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* <pre>
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* . static Locale* getAvailableLocales(int32_t& numLocales)
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* . static UnicodeString& getDisplayName(const Locale& objectLocale,
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* . const Locale& displayLocale,
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* . UnicodeString& displayName)
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* . static UnicodeString& getDisplayName(const Locale& objectLocale,
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* . UnicodeString& displayName)
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* </pre>
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* </blockquote>
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*/
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class U_COMMON_API Locale
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{
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public:
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/**
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* Useful constants for language.
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*/
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static const Locale ENGLISH;
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static const Locale FRENCH;
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static const Locale GERMAN;
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static const Locale ITALIAN;
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static const Locale JAPANESE;
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static const Locale KOREAN;
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static const Locale CHINESE;
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static const Locale SIMPLIFIED_CHINESE;
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static const Locale TRADITIONAL_CHINESE;
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/**
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* Useful constants for country.
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*/
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static const Locale FRANCE;
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static const Locale GERMANY;
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static const Locale ITALY;
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static const Locale JAPAN;
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static const Locale KOREA;
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static const Locale CHINA; /* Alias for PRC */
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static const Locale PRC; /* Peoples Republic of China */
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static const Locale TAIWAN;
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static const Locale UK;
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static const Locale US;
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static const Locale CANADA;
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static const Locale CANADA_FRENCH;
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/**
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* Construct an empty locale. It's only used when a fill-in parameter is
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* needed.
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* @stable
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*/
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Locale();
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/**
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* Construct a locale from language, country, variant.
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*
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* @param language Lowercase two-letter ISO-639 code.
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* @param country Uppercase two-letter ISO-3166 code. (optional)
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* @param variant Uppercase vendor and browser specific code. See class
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* description. (optional)
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* @draft
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*/
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Locale( const char * language,
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const char * country = 0,
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const char * variant = 0);
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#ifndef ICU_LOCID_NO_DEPRECATES
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/**
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* Construct a locale from language, country, variant.
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*
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* @param language Lowercase two-letter ISO-639 code.
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* @param country Uppercase two-letter ISO-3166 code. (optional)
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* @param variant Uppercase vendor and browser specific code. See class
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* description. (optional)
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* @deprecated Remove in the first release of 2001.
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*/
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Locale( const UnicodeString& language,
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const UnicodeString& country ,
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const UnicodeString& variant );
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/**
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* Construct a locale from language, country.
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*
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* @param language Lowercase two-letter ISO-639 code.
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* @param country Uppercase two-letter ISO-3166 code. (optional)
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* @deprecated Remove in the first release of 2001.
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*/
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Locale( const UnicodeString& language,
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const UnicodeString& country );
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/**
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* Construct a locale from language.
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*
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* @param language Lowercase two-letter ISO-639 code.
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* @deprecated Remove in the first release of 2001.
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*/
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Locale( const UnicodeString& language);
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#endif /* ICU_LOCID_NO_DEPRECATES */
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/**
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* Initializes a Locale object from another Locale object.
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*
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* @param other The Locale object being copied in.
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* @stable
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*/
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Locale(const Locale& other);
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/**
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* Destructor
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* @stable
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*/
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~Locale() ;
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/**
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* Replaces the entire contents of *this with the specified value.
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*
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* @param other The Locale object being copied in.
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* @return *this
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* @stable
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*/
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Locale& operator=(const Locale& other);
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/**
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* Checks if two locale keys are the same.
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*
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* @param other The locale key object to be compared with this.
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* @return True if the two locale keys are the same, false otherwise.
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* @stable
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*/
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UBool operator==(const Locale& other) const;
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/**
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* Checks if two locale keys are not the same.
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*
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* @param other The locale key object to be compared with this.
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* @return True if the two locale keys are not the same, false
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* otherwise.
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* @stable
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*/
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UBool operator!=(const Locale& other) const;
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/**
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* Common methods of getting the current default Locale. Used for the
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* presentation: menus, dialogs, etc. Generally set once when your applet or
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* application is initialized, then never reset. (If you do reset the
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* default locale, you probably want to reload your GUI, so that the change
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* is reflected in your interface.)
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*
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* More advanced programs will allow users to use different locales for
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* different fields, e.g. in a spreadsheet.
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*
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* Note that the initial setting will match the host system.
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* @system
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* @stable
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*/
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static Locale& getDefault(void);
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/**
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* Sets the default. Normally set once at the beginning of applet or
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* application, then never reset. setDefault does NOT reset the host locale.
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*
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* @param newLocale Locale to set to.
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* @system
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* @stable
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*/
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static void setDefault(const Locale& newLocale,
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UErrorCode& success);
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/**
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* Returns the locale's two-letter ISO-639 language code.
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* @return An alias to the code
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* @draft
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*/
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const char * getLanguage( ) const;
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/**
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* Returns the locale's two-letter ISO-3166 country code.
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* @return An alias to the code
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* @draft
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*/
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const char * getCountry( ) const;
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/**
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* Returns the locale's variant code.
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* @return An alias to the code
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* @draft
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*/
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const char * getVariant( ) const;
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/**
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* Returns the programmatic name of the entire locale, with the language,
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* country and variant separated by underbars. If a field is missing, up
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* to two leading underbars will occur. Example: "en", "de_DE", "en_US_WIN",
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* "de__POSIX", "fr__MAC", "__MAC", "_MT", "_FR_EURO"
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* @return A pointer to "name".
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*/
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const char * getName() const;
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/**
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* returns the locale's three-letter language code, as specified
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* in ISO draft standard ISO-639-2..
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* @return An alias to the code, or NULL
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* @draft
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*/
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const char * getISO3Language() const;
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/**
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* Fills in "name" with the locale's three-letter ISO-3166 country code.
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* @return An alias to the code, or NULL
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* @draft
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*/
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const char * getISO3Country() const;
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#ifndef ICU_LOCID_NO_DEPRECATES
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/* begin deprecated versions */
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/**
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* Fills in "lang" with the locale's two-letter ISO-639 language code.
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* @param lang Receives the language code.
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* @return A reference to "lang"
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* @deprecated Remove in the first release of 2001.
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*/
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UnicodeString& getLanguage( UnicodeString& lang) const;
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/**
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* Fills in "cntry" with the locale's two-letter ISO-3166 country code.
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* @param cntry Receives the country code.
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* @return A reference to "cntry".
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* @deprecated Remove in the first release of 2001.
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*/
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UnicodeString& getCountry( UnicodeString& cntry) const;
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/**
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* Fills in "var" with the locale's variant code.
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* @param var Receives the variant code.
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* @return A reference to "var".
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* @deprecated Remove in the first release of 2001.
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*/
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UnicodeString& getVariant( UnicodeString& var) const;
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/**
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* Fills in "name" the programmatic name of the entire locale, with the language,
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* country and variant separated by underbars. If a field is missing, at
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* most one underbar will occur. Example: "en", "de_DE", "en_US_WIN",
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* "de_POSIX", "fr_MAC"
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* @param var Receives the programmatic locale name.
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* @return A reference to "name".
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* @deprecated Remove in the first release of 2001.
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*/
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UnicodeString& getName( UnicodeString& name) const;
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/**
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* Fills in "name" with the locale's three-letter language code, as specified
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* in ISO draft standard ISO-639-2..
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* @param name Receives the three-letter language code.
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* @param status An UErrorCode to receive any MISSING_RESOURCE_ERRORs
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* @return A reference to "name".
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* @deprecated Remove in the first release of 2001.
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*/
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UnicodeString& getISO3Language(UnicodeString& name, UErrorCode& status) const;
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/**
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* Fills in "name" with the locale's three-letter ISO-3166 country code.
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* @param name Receives the three-letter country code.
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* @param status An UErrorCode to receive any MISSING_RESOURCE_ERRORs
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* @return A reference to "name".
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* @deprecated Remove in the first release of 2001.
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*/
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UnicodeString& getISO3Country( UnicodeString& name, UErrorCode& status) const;
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/* END deprecated [ ICU_LOCID_NO_DEPRECATES ] */
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#endif /* ICU_LOCID_NO_DEPRECATES */
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/**
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* Returns the Windows LCID value corresponding to this locale.
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* This value is stored in the resource data for the locale as a one-to-four-digit
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* hexadecimal number. If the resource is missing, in the wrong format, or
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* there is no Windows LCID value that corresponds to this locale, returns 0.
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* @stable
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*/
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uint32_t getLCID(void) const;
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/**
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* Fills in "dispLang" with the name of this locale's language in a format suitable for
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* user display in the default locale. For example, if the locale's language code is
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* "fr" and the default locale's language code is "en", this function would set
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* dispLang to "French".
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* @param dispLang Receives the language's display name.
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* @return A reference to "dispLang".
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* @stable
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*/
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UnicodeString& getDisplayLanguage(UnicodeString& dispLang) const;
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/**
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* Fills in "dispLang" with the name of this locale's language in a format suitable for
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* user display in the locale specified by "inLocale". For example, if the locale's
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* language code is "en" and inLocale's language code is "fr", this function would set
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* dispLang to "Anglais".
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* @param inLocale Specifies the locale to be used to display the name. In other words,
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* if the locale's language code is "en", passing Locale::FRENCH for
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* inLocale would result in "Anglais", while passing Locale::GERMAN
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* for inLocale would result in "Englisch".
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* @param dispLang Receives the language's display name.
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* @return A reference to "dispLang".
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* @stable
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*/
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UnicodeString& getDisplayLanguage( const Locale& inLocale,
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UnicodeString& dispLang) const;
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/**
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* Fills in "dispCountry" with the name of this locale's country in a format suitable
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* for user display in the default locale. For example, if the locale's country code
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* is "FR" and the default locale's language code is "en", this function would set
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* dispCountry to "France".
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* @param dispCountry Receives the country's display name.
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* @return A reference to "dispCountry".
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* @stable
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*/
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UnicodeString& getDisplayCountry( UnicodeString& dispCountry) const;
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/**
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* Fills in "dispCountry" with the name of this locale's country in a format suitable
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* for user display in the locale specified by "inLocale". For example, if the locale's
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* country code is "US" and inLocale's language code is "fr", this function would set
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* dispCountry to "Etats-Unis".
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* @param inLocale Specifies the locale to be used to display the name. In other
|
||
* words, if the locale's country code is "US", passing
|
||
* Locale::FRENCH for inLocale would result in "<22>tats-Unis", while
|
||
* passing Locale::GERMAN for inLocale would result in
|
||
* "Vereinigte Staaten".
|
||
* @param dispCountry Receives the country's display name.
|
||
* @return A reference to "dispCountry".
|
||
* @stable
|
||
*/
|
||
UnicodeString& getDisplayCountry( const Locale& inLocale,
|
||
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
|
||
*/
|
||
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 "inLocale".
|
||
* @param inLocale Specifies the locale to be used to display the name.
|
||
* @param dispVar Receives the variant's display name.
|
||
* @return A reference to "dispVar".
|
||
* @stable
|
||
*/
|
||
UnicodeString& getDisplayVariant( const Locale& inLocale,
|
||
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
|
||
*/
|
||
UnicodeString& getDisplayName( UnicodeString& name) const;
|
||
/**
|
||
* Fills in "name" with the name of this locale in a format suitable for user display
|
||
* in the locale specfied by "inLocale". 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 inLocale is
|
||
* fr_FR, then en_US's display name would be "Anglais (<28>tats-Unis)", and no_NO_NY's
|
||
* display name would be "norv<72>gien (Norv<72>ge,NY)".
|
||
* @param inLocale Specifies the locale to be used to display the name.
|
||
* @param name Receives the locale's display name.
|
||
* @return A reference to "name".
|
||
* @stable
|
||
*/
|
||
UnicodeString& getDisplayName( const Locale& inLocale,
|
||
UnicodeString& name) const;
|
||
/**
|
||
* Generates a hash code for the locale.
|
||
* @stable
|
||
*/
|
||
int32_t hashCode(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
|
||
*/
|
||
static const Locale* getAvailableLocales(int32_t& count);
|
||
|
||
/**
|
||
* 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
|
||
* @draft
|
||
*/
|
||
static const char* const* 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
|
||
* @draft
|
||
*/
|
||
static const char* const* getISOLanguages();
|
||
|
||
|
||
#ifndef ICU_LOCID_NO_DEPRECATES
|
||
/**
|
||
* Returns a list of all 2-letter country codes defined in ISO 3166.
|
||
* Can be used to create Locales.
|
||
* @param count Receives the number of countries in the list.
|
||
* @return A pointer to an array of UnicodeString objects. The caller does NOT
|
||
* get ownership of this list, and must NOT delete it.
|
||
* @deprecated Remove in the first release of 2001.
|
||
*/
|
||
static const UnicodeString* getISOCountries(int32_t& count);
|
||
|
||
/**
|
||
* Returns a list of all 2-letter language codes defined in ISO 639.
|
||
* Can be used to create Locales.
|
||
* [NOTE: ISO 639 is not a stable standard-- some languages' codes have changed.
|
||
* The list this function returns includes both the new and the old codes for the
|
||
* languages whose codes have changed.]
|
||
* @param count Receives the number of languages in the list.
|
||
* @return A pointer to an array of UnicodeString objects. The caller does NOT
|
||
* get ownership of this list, and must NOT delete it.
|
||
* @deprecated Remove in the first release of 2001.
|
||
*/
|
||
static const UnicodeString* getISOLanguages(int32_t& count);
|
||
#endif /* ICU_LOCID_NO_DEPRECATES */
|
||
|
||
protected: /* only protected for testing purposes. DO NOT USE. */
|
||
void setFromPOSIXID(const char *posixID); /* set it from a single string. */
|
||
|
||
/**
|
||
* Given an ISO country code, returns an array of Strings containing the ISO
|
||
* codes of the languages spoken in that country. Official languages are listed
|
||
* in the returned table before unofficial languages, but other than that, the
|
||
* order of the returned list is indeterminate. If the value the user passes in
|
||
* for "country" is not a valid ISO 316 country code, or if we don't have language
|
||
* information for the specified country, this function returns an empty array.
|
||
*
|
||
* [This function is not currently part of Locale's API, but is needed in the
|
||
* implementation. We hope to add it to the API in a future release.]
|
||
* @param country The ISO 2-letter country code of the desired country
|
||
* @param count Receives the number of languages in the list.
|
||
* @return A pointer to an array of UnicodeString objects. The caller does NOT
|
||
* get ownership of this list, and must NOT delete it.
|
||
*/
|
||
static const UnicodeString* getLanguagesForCountry( const UnicodeString& country,
|
||
int32_t& count);
|
||
|
||
|
||
private:
|
||
/**
|
||
* Initialize the locale object with a new name.
|
||
* Was deprecated - used in implementation - moved internal
|
||
*
|
||
* @param cLocaleID The new locale name.
|
||
*/
|
||
Locale& init(const char* cLocaleID);
|
||
|
||
|
||
char language[ULOC_LANG_CAPACITY];
|
||
char country[ULOC_COUNTRY_CAPACITY];
|
||
char* variant;
|
||
char* fullName;
|
||
char fullNameBuffer[ULOC_FULLNAME_CAPACITY];
|
||
|
||
static Locale *localeList;
|
||
static int32_t localeListCount;
|
||
|
||
/* Begin deprecated fields */
|
||
static UnicodeString *isoLanguages;
|
||
static int32_t isoLanguagesCount;
|
||
static UnicodeString *isoCountries;
|
||
static int32_t isoCountriesCount;
|
||
/* End deprecated fields */
|
||
|
||
static UHashtable *ctry2LangMapping;
|
||
static const UnicodeString compressedCtry2LangMapping;
|
||
|
||
static Locale fgDefaultLocale;
|
||
|
||
friend void locale_set_default_internal(const char *);
|
||
|
||
};
|
||
|
||
inline UBool
|
||
Locale::operator!=(const Locale& other) const
|
||
{
|
||
return !operator==(other);
|
||
}
|
||
|
||
#endif /* XP_CPLUSPLUS */
|
||
#endif
|
||
|
||
|