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Diffstat (limited to 'intl/icu/source/i18n/unicode/region.h')
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diff --git a/intl/icu/source/i18n/unicode/region.h b/intl/icu/source/i18n/unicode/region.h new file mode 100644 index 0000000000..1e19d66f4a --- /dev/null +++ b/intl/icu/source/i18n/unicode/region.h @@ -0,0 +1,229 @@ +// © 2016 and later: Unicode, Inc. and others. +// License & terms of use: http://www.unicode.org/copyright.html +/* + ******************************************************************************* + * Copyright (C) 2014-2016, International Business Machines Corporation and others. + * All Rights Reserved. + ******************************************************************************* + */ + +#ifndef REGION_H +#define REGION_H + +/** + * \file + * \brief C++ API: Region classes (territory containment) + */ + +#include "unicode/utypes.h" + +#if U_SHOW_CPLUSPLUS_API + +#if !UCONFIG_NO_FORMATTING + +#include "unicode/uregion.h" +#include "unicode/uobject.h" +#include "unicode/uniset.h" +#include "unicode/unistr.h" +#include "unicode/strenum.h" + +U_NAMESPACE_BEGIN + +/** + * <code>Region</code> is the class representing a Unicode Region Code, also known as a + * Unicode Region Subtag, which is defined based upon the BCP 47 standard. We often think of + * "regions" as "countries" when defining the characteristics of a locale. Region codes There are different + * types of region codes that are important to distinguish. + * <p> + * Macroregion - A code for a "macro geographical (continental) region, geographical sub-region, or + * selected economic and other grouping" as defined in + * UN M.49 (http://unstats.un.org/unsd/methods/m49/m49regin.htm). + * These are typically 3-digit codes, but contain some 2-letter codes, such as the LDML code QO + * added for Outlying Oceania. Not all UNM.49 codes are defined in LDML, but most of them are. + * Macroregions are represented in ICU by one of three region types: WORLD ( region code 001 ), + * CONTINENTS ( regions contained directly by WORLD ), and SUBCONTINENTS ( things contained directly + * by a continent ). + * <p> + * TERRITORY - A Region that is not a Macroregion. These are typically codes for countries, but also + * include areas that are not separate countries, such as the code "AQ" for Antarctica or the code + * "HK" for Hong Kong (SAR China). Overseas dependencies of countries may or may not have separate + * codes. The codes are typically 2-letter codes aligned with the ISO 3166 standard, but BCP47 allows + * for the use of 3-digit codes in the future. + * <p> + * UNKNOWN - The code ZZ is defined by Unicode LDML for use to indicate that the Region is unknown, + * or that the value supplied as a region was invalid. + * <p> + * DEPRECATED - Region codes that have been defined in the past but are no longer in modern usage, + * usually due to a country splitting into multiple territories or changing its name. + * <p> + * GROUPING - A widely understood grouping of territories that has a well defined membership such + * that a region code has been assigned for it. Some of these are UNM.49 codes that do't fall into + * the world/continent/sub-continent hierarchy, while others are just well known groupings that have + * their own region code. Region "EU" (European Union) is one such region code that is a grouping. + * Groupings will never be returned by the getContainingRegion() API, since a different type of region + * ( WORLD, CONTINENT, or SUBCONTINENT ) will always be the containing region instead. + * + * The Region class is not intended for public subclassing. + * + * @author John Emmons + * @stable ICU 51 + */ + +class U_I18N_API Region : public UObject { +public: + /** + * Destructor. + * @stable ICU 51 + */ + virtual ~Region(); + + /** + * Returns true if the two regions are equal. + * @stable ICU 51 + */ + bool operator==(const Region &that) const; + + /** + * Returns true if the two regions are NOT equal; that is, if operator ==() returns false. + * @stable ICU 51 + */ + bool operator!=(const Region &that) const; + + /** + * Returns a pointer to a Region using the given region code. The region code can be either 2-letter ISO code, + * 3-letter ISO code, UNM.49 numeric code, or other valid Unicode Region Code as defined by the LDML specification. + * The identifier will be canonicalized internally using the supplemental metadata as defined in the CLDR. + * If the region code is nullptr or not recognized, the appropriate error code will be set ( U_ILLEGAL_ARGUMENT_ERROR ) + * @stable ICU 51 + */ + static const Region* U_EXPORT2 getInstance(const char *region_code, UErrorCode &status); + + /** + * Returns a pointer to a Region using the given numeric region code. If the numeric region code is not recognized, + * the appropriate error code will be set ( U_ILLEGAL_ARGUMENT_ERROR ). + * @stable ICU 51 + */ + static const Region* U_EXPORT2 getInstance (int32_t code, UErrorCode &status); + + /** + * Returns an enumeration over the IDs of all known regions that match the given type. + * @stable ICU 55 + */ + static StringEnumeration* U_EXPORT2 getAvailable(URegionType type, UErrorCode &status); + + /** + * Returns a pointer to the region that contains this region. Returns nullptr if this region is code "001" (World) + * or "ZZ" (Unknown region). For example, calling this method with region "IT" (Italy) returns the + * region "039" (Southern Europe). + * @stable ICU 51 + */ + const Region* getContainingRegion() const; + + /** + * Return a pointer to the region that geographically contains this region and matches the given type, + * moving multiple steps up the containment chain if necessary. Returns nullptr if no containing region can be found + * that matches the given type. Note: The URegionTypes = "URGN_GROUPING", "URGN_DEPRECATED", or "URGN_UNKNOWN" + * are not appropriate for use in this API. nullptr will be returned in this case. For example, calling this method + * with region "IT" (Italy) for type "URGN_CONTINENT" returns the region "150" ( Europe ). + * @stable ICU 51 + */ + const Region* getContainingRegion(URegionType type) const; + + /** + * Return an enumeration over the IDs of all the regions that are immediate children of this region in the + * region hierarchy. These returned regions could be either macro regions, territories, or a mixture of the two, + * depending on the containment data as defined in CLDR. This API may return nullptr if this region doesn't have + * any sub-regions. For example, calling this method with region "150" (Europe) returns an enumeration containing + * the various sub regions of Europe - "039" (Southern Europe) - "151" (Eastern Europe) - "154" (Northern Europe) + * and "155" (Western Europe). + * @stable ICU 55 + */ + StringEnumeration* getContainedRegions(UErrorCode &status) const; + + /** + * Returns an enumeration over the IDs of all the regions that are children of this region anywhere in the region + * hierarchy and match the given type. This API may return an empty enumeration if this region doesn't have any + * sub-regions that match the given type. For example, calling this method with region "150" (Europe) and type + * "URGN_TERRITORY" returns a set containing all the territories in Europe ( "FR" (France) - "IT" (Italy) - "DE" (Germany) etc. ) + * @stable ICU 55 + */ + StringEnumeration* getContainedRegions( URegionType type, UErrorCode &status ) const; + + /** + * Returns true if this region contains the supplied other region anywhere in the region hierarchy. + * @stable ICU 51 + */ + UBool contains(const Region &other) const; + + /** + * For deprecated regions, return an enumeration over the IDs of the regions that are the preferred replacement + * regions for this region. Returns null for a non-deprecated region. For example, calling this method with region + * "SU" (Soviet Union) would return a list of the regions containing "RU" (Russia), "AM" (Armenia), "AZ" (Azerbaijan), etc... + * @stable ICU 55 + */ + StringEnumeration* getPreferredValues(UErrorCode &status) const; + + /** + * Return this region's canonical region code. + * @stable ICU 51 + */ + const char* getRegionCode() const; + + /** + * Return this region's numeric code. + * Returns a negative value if the given region does not have a numeric code assigned to it. + * @stable ICU 51 + */ + int32_t getNumericCode() const; + + /** + * Returns the region type of this region. + * @stable ICU 51 + */ + URegionType getType() const; + +#ifndef U_HIDE_INTERNAL_API + /** + * Cleans up statically allocated memory. + * @internal + */ + static void cleanupRegionData(); +#endif /* U_HIDE_INTERNAL_API */ + +private: + char id[4]; + UnicodeString idStr; + int32_t code; + URegionType fType; + Region *containingRegion; + UVector *containedRegions; + UVector *preferredValues; + + /** + * Default Constructor. Internal - use factory methods only. + */ + Region(); + + + /* + * Initializes the region data from the ICU resource bundles. The region data + * contains the basic relationships such as which regions are known, what the numeric + * codes are, any known aliases, and the territory containment data. + * + * If the region data has already loaded, then this method simply returns without doing + * anything meaningful. + */ + + static void U_CALLCONV loadRegionData(UErrorCode &status); + +}; + +U_NAMESPACE_END + +#endif /* #if !UCONFIG_NO_FORMATTING */ + +#endif /* U_SHOW_CPLUSPLUS_API */ + +#endif // REGION_H + +//eof |