// © 2016 and later: Unicode, Inc. and others. // License & terms of use: http://www.unicode.org/copyright.html /* ***************************************************************************************** * Copyright (C) 2014, International Business Machines * Corporation and others. All Rights Reserved. ***************************************************************************************** */ #ifndef UREGION_H #define UREGION_H #include "unicode/utypes.h" #include "unicode/uenum.h" /** * \file * \brief C API: URegion (territory containment and mapping) * * URegion objects represent data associated with a particular Unicode Region Code, also known as a * Unicode Region Subtag, which is defined based upon the BCP 47 standard. These include: * * Two-letter codes defined by ISO 3166-1, with special LDML treatment of certain private-use or * reserved codes; * * A subset of 3-digit numeric codes defined by UN M.49. * URegion objects can also provide mappings to and from additional codes. There are different types * of regions 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. These are typically 3-digit codes, * but contain some 2-letter codes for LDML extensions, such as "QO" for Outlying Oceania. * Macroregions are represented in ICU by one of three region types: WORLD (code 001), * CONTINENTS (regions contained directly by WORLD), and SUBCONTINENTS (regions 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 ISO 3166, 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 in indicating that 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 UN M.49 codes that don'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 uregion_getContainingRegion, since a different type of region * (WORLD, CONTINENT, or SUBCONTINENT) will always be the containing region instead. * * URegion objects are const/immutable, owned and maintained by ICU itself, so there are not functions * to open or close them. */ /** * URegionType is an enumeration defining the different types of regions. Current possible * values are URGN_WORLD, URGN_CONTINENT, URGN_SUBCONTINENT, URGN_TERRITORY, URGN_GROUPING, * URGN_DEPRECATED, and URGN_UNKNOWN. * * @stable ICU 51 */ typedef enum URegionType { /** * Type representing the unknown region. * @stable ICU 51 */ URGN_UNKNOWN, /** * Type representing a territory. * @stable ICU 51 */ URGN_TERRITORY, /** * Type representing the whole world. * @stable ICU 51 */ URGN_WORLD, /** * Type representing a continent. * @stable ICU 51 */ URGN_CONTINENT, /** * Type representing a sub-continent. * @stable ICU 51 */ URGN_SUBCONTINENT, /** * Type representing a grouping of territories that is not to be used in * the normal WORLD/CONTINENT/SUBCONTINENT/TERRITORY containment tree. * @stable ICU 51 */ URGN_GROUPING, /** * Type representing a region whose code has been deprecated, usually * due to a country splitting into multiple territories or changing its name. * @stable ICU 51 */ URGN_DEPRECATED, #ifndef U_HIDE_DEPRECATED_API /** * One more than the highest normal URegionType value. * @deprecated ICU 58 The numeric value may change over time, see ICU ticket #12420. */ URGN_LIMIT #endif /* U_HIDE_DEPRECATED_API */ } URegionType; #if !UCONFIG_NO_FORMATTING /** * Opaque URegion object for use in C programs. * @stable ICU 52 */ struct URegion; typedef struct URegion URegion; /**< @stable ICU 52 */ /** * Returns a pointer to a URegion for the specified region code: A 2-letter or 3-letter ISO 3166 * code, UN M.49 numeric code (superset of ISO 3166 numeric codes), or other valid Unicode Region * Code as defined by the LDML specification. The code will be canonicalized internally. If the * region code is NULL or not recognized, the appropriate error code will be set * (U_ILLEGAL_ARGUMENT_ERROR). * @stable ICU 52 */ U_STABLE const URegion* U_EXPORT2 uregion_getRegionFromCode(const char *regionCode, UErrorCode *status); /** * Returns a pointer to a URegion for the specified numeric region code. If the numeric region * code is not recognized, the appropriate error code will be set (U_ILLEGAL_ARGUMENT_ERROR). * @stable ICU 52 */ U_STABLE const URegion* U_EXPORT2 uregion_getRegionFromNumericCode (int32_t code, UErrorCode *status); /** * Returns an enumeration over the canonical codes of all known regions that match the given type. * The enumeration must be closed with with uenum_close(). * @stable ICU 52 */ U_STABLE UEnumeration* U_EXPORT2 uregion_getAvailable(URegionType type, UErrorCode *status); /** * Returns true if the specified uregion is equal to the specified otherRegion. * @stable ICU 52 */ U_STABLE UBool U_EXPORT2 uregion_areEqual(const URegion* uregion, const URegion* otherRegion); /** * Returns a pointer to the URegion that contains the specified uregion. Returns NULL if the * specified uregion is code "001" (World) or "ZZ" (Unknown region). For example, calling * this method with region "IT" (Italy) returns the URegion for "039" (Southern Europe). * @stable ICU 52 */ U_STABLE const URegion* U_EXPORT2 uregion_getContainingRegion(const URegion* uregion); /** * Return a pointer to the URegion that geographically contains this uregion and matches the * specified type, moving multiple steps up the containment chain if necessary. Returns NULL if no * containing region can be found that matches the specified type. Will return NULL if URegionType * is URGN_GROUPING, URGN_DEPRECATED, or URGN_UNKNOWN which are not appropriate for this API. * For example, calling this method with uregion "IT" (Italy) for type URGN_CONTINENT returns the * URegion "150" (Europe). * @stable ICU 52 */ U_STABLE const URegion* U_EXPORT2 uregion_getContainingRegionOfType(const URegion* uregion, URegionType type); /** * Return an enumeration over the canonical codes of all the regions that are immediate children * of the specified uregion 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 returns NULL if this uregion doesn't have any sub-regions. For example, calling * this function for uregion "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). The enumeration must be closed with with uenum_close(). * @stable ICU 52 */ U_STABLE UEnumeration* U_EXPORT2 uregion_getContainedRegions(const URegion* uregion, UErrorCode *status); /** * Returns an enumeration over the canonical codes of all the regions that are children of the * specified uregion anywhere in the region hierarchy and match the given type. This API may return * an empty enumeration if this uregion 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 an * enumeration containing all the territories in Europe: "FR" (France), "IT" (Italy), "DE" (Germany), * etc. The enumeration must be closed with with uenum_close(). * @stable ICU 52 */ U_STABLE UEnumeration* U_EXPORT2 uregion_getContainedRegionsOfType(const URegion* uregion, URegionType type, UErrorCode *status); /** * Returns true if the specified uregion contains the specified otherRegion anywhere in the region * hierarchy. * @stable ICU 52 */ U_STABLE UBool U_EXPORT2 uregion_contains(const URegion* uregion, const URegion* otherRegion); /** * If the specified uregion is deprecated, returns an enumeration over the canonical codes of the * regions that are the preferred replacement regions for the specified uregion. If the specified * uregion is not deprecated, returns NULL. For example, calling this method with uregion * "SU" (Soviet Union) returns a list of the regions containing "RU" (Russia), "AM" (Armenia), * "AZ" (Azerbaijan), etc... The enumeration must be closed with with uenum_close(). * @stable ICU 52 */ U_STABLE UEnumeration* U_EXPORT2 uregion_getPreferredValues(const URegion* uregion, UErrorCode *status); /** * Returns the specified uregion's canonical code. * @stable ICU 52 */ U_STABLE const char* U_EXPORT2 uregion_getRegionCode(const URegion* uregion); /** * Returns the specified uregion's numeric code, or a negative value if there is no numeric code * for the specified uregion. * @stable ICU 52 */ U_STABLE int32_t U_EXPORT2 uregion_getNumericCode(const URegion* uregion); /** * Returns the URegionType of the specified uregion. * @stable ICU 52 */ U_STABLE URegionType U_EXPORT2 uregion_getType(const URegion* uregion); #endif /* #if !UCONFIG_NO_FORMATTING */ #endif