1 /* 2 ******************************************************************************* 3 * Copyright (C) 2013, International Business Machines Corporation 4 * All Rights Reserved. 5 ******************************************************************************* 6 */ 7 8 #ifndef REGION_H 9 #define REGION_H 10 11 /** 12 * \file 13 * \brief C++ API: Region classes (territory containment) 14 */ 15 16 #include "unicode/utypes.h" 17 18 #ifndef U_HIDE_DRAFT_API 19 /** 20 * URegionType is an enumeration defining the different types of regions. Current possible 21 * values are URGN_WORLD, URGN_CONTINENT, URGN_SUBCONTINENT, URGN_TERRITORY, URGN_GROUPING, 22 * URGN_DEPRECATED, and URGN_UNKNOWN. 23 * 24 * @draft ICU 51 25 */ 26 27 typedef enum URegionType { 28 /** 29 * Type representing the unknown region. 30 * @draft ICU 51 31 */ 32 URGN_UNKNOWN, 33 34 /** 35 * Type representing a territory. 36 * @draft ICU 51 37 */ 38 URGN_TERRITORY, 39 40 /** 41 * Type representing the whole world. 42 * @draft ICU 51 43 */ 44 URGN_WORLD, 45 46 /** 47 * Type representing a continent. 48 * @draft ICU 51 49 */ 50 URGN_CONTINENT, 51 52 /** 53 * Type representing a sub-continent. 54 * @draft ICU 51 55 */ 56 URGN_SUBCONTINENT, 57 58 /** 59 * Type representing a grouping of territories that is not to be used in 60 * the normal WORLD/CONTINENT/SUBCONTINENT/TERRITORY containment tree. 61 * @draft ICU 51 62 */ 63 URGN_GROUPING, 64 65 /** 66 * Type representing a region whose code has been deprecated, usually 67 * due to a country splitting into multiple territories or changing its name. 68 * @draft ICU 51 69 */ 70 URGN_DEPRECATED, 71 72 /** 73 * Maximum value for this unumeration. 74 * @draft ICU 51 75 */ 76 URGN_LIMIT 77 } URegionType; 78 79 80 81 #if !UCONFIG_NO_FORMATTING 82 83 #include "unicode/uobject.h" 84 #include "unicode/uniset.h" 85 #include "unicode/unistr.h" 86 #include "unicode/strenum.h" 87 88 U_NAMESPACE_BEGIN 89 90 /** 91 * <code>Region</code> is the class representing a Unicode Region Code, also known as a 92 * Unicode Region Subtag, which is defined based upon the BCP 47 standard. We often think of 93 * "regions" as "countries" when defining the characteristics of a locale. Region codes There are different 94 * types of region codes that are important to distinguish. 95 * <p> 96 * Macroregion - A code for a "macro geographical (continental) region, geographical sub-region, or 97 * selected economic and other grouping" as defined in 98 * UN M.49 (http://unstats.un.org/unsd/methods/m49/m49regin.htm). 99 * These are typically 3-digit codes, but contain some 2-letter codes, such as the LDML code QO 100 * added for Outlying Oceania. Not all UNM.49 codes are defined in LDML, but most of them are. 101 * Macroregions are represented in ICU by one of three region types: WORLD ( region code 001 ), 102 * CONTINENTS ( regions contained directly by WORLD ), and SUBCONTINENTS ( things contained directly 103 * by a continent ). 104 * <p> 105 * TERRITORY - A Region that is not a Macroregion. These are typically codes for countries, but also 106 * include areas that are not separate countries, such as the code "AQ" for Antarctica or the code 107 * "HK" for Hong Kong (SAR China). Overseas dependencies of countries may or may not have separate 108 * codes. The codes are typically 2-letter codes aligned with the ISO 3166 standard, but BCP47 allows 109 * for the use of 3-digit codes in the future. 110 * <p> 111 * UNKNOWN - The code ZZ is defined by Unicode LDML for use to indicate that the Region is unknown, 112 * or that the value supplied as a region was invalid. 113 * <p> 114 * DEPRECATED - Region codes that have been defined in the past but are no longer in modern usage, 115 * usually due to a country splitting into multiple territories or changing its name. 116 * <p> 117 * GROUPING - A widely understood grouping of territories that has a well defined membership such 118 * that a region code has been assigned for it. Some of these are UNM.49 codes that do't fall into 119 * the world/continent/sub-continent hierarchy, while others are just well known groupings that have 120 * their own region code. Region "EU" (European Union) is one such region code that is a grouping. 121 * Groupings will never be returned by the getContainingRegion() API, since a different type of region 122 * ( WORLD, CONTINENT, or SUBCONTINENT ) will always be the containing region instead. 123 * 124 * The Region class is not intended for public subclassing. 125 * 126 * @author John Emmons 127 * @draft ICU 51 128 */ 129 130 class U_I18N_API Region : public UObject { 131 public: 132 /** 133 * Destructor. 134 * @draft ICU 51 135 */ 136 virtual ~Region(); 137 138 /** 139 * Returns true if the two regions are equal. 140 * @draft ICU 51 141 */ 142 UBool operator==(const Region &that) const; 143 144 /** 145 * Returns true if the two regions are NOT equal; that is, if operator ==() returns false. 146 * @draft ICU 51 147 */ 148 UBool operator!=(const Region &that) const; 149 150 /** 151 * Returns a pointer to a Region using the given region code. The region code can be either 2-letter ISO code, 152 * 3-letter ISO code, UNM.49 numeric code, or other valid Unicode Region Code as defined by the LDML specification. 153 * The identifier will be canonicalized internally using the supplemental metadata as defined in the CLDR. 154 * If the region code is NULL or not recognized, the appropriate error code will be set ( U_ILLEGAL_ARGUMENT_ERROR ) 155 * @draft ICU 51 156 */ 157 static const Region* U_EXPORT2 getInstance(const char *region_code, UErrorCode &status); 158 159 /** 160 * Returns a pointer to a Region using the given numeric region code. If the numeric region code is not recognized, 161 * the appropriate error code will be set ( U_ILLEGAL_ARGUMENT_ERROR ). 162 * @draft ICU 51 163 */ 164 static const Region* U_EXPORT2 getInstance (int32_t code, UErrorCode &status); 165 166 /** 167 * Returns an enumeration over the IDs of all known regions that match the given type. 168 * @draft ICU 51 169 */ 170 static StringEnumeration* U_EXPORT2 getAvailable(URegionType type); 171 172 /** 173 * Returns a pointer to the region that contains this region. Returns NULL if this region is code "001" (World) 174 * or "ZZ" (Unknown region). For example, calling this method with region "IT" (Italy) returns the 175 * region "039" (Southern Europe). 176 * @draft ICU 51 177 */ 178 const Region* getContainingRegion() const; 179 180 /** 181 * Return a pointer to the region that geographically contains this region and matches the given type, 182 * moving multiple steps up the containment chain if necessary. Returns NULL if no containing region can be found 183 * that matches the given type. Note: The URegionTypes = "URGN_GROUPING", "URGN_DEPRECATED", or "URGN_UNKNOWN" 184 * are not appropriate for use in this API. NULL will be returned in this case. For example, calling this method 185 * with region "IT" (Italy) for type "URGN_CONTINENT" returns the region "150" ( Europe ). 186 * @draft ICU 51 187 */ 188 const Region* getContainingRegion(URegionType type) const; 189 190 /** 191 * Return an enumeration over the IDs of all the regions that are immediate children of this region in the 192 * region hierarchy. These returned regions could be either macro regions, territories, or a mixture of the two, 193 * depending on the containment data as defined in CLDR. This API may return NULL if this region doesn't have 194 * any sub-regions. For example, calling this method with region "150" (Europe) returns an enumeration containing 195 * the various sub regions of Europe - "039" (Southern Europe) - "151" (Eastern Europe) - "154" (Northern Europe) 196 * and "155" (Western Europe). 197 * @draft ICU 51 198 */ 199 StringEnumeration* getContainedRegions() const; 200 201 /** 202 * Returns an enumeration over the IDs of all the regions that are children of this region anywhere in the region 203 * hierarchy and match the given type. This API may return an empty enumeration if this region doesn't have any 204 * sub-regions that match the given type. For example, calling this method with region "150" (Europe) and type 205 * "URGN_TERRITORY" returns a set containing all the territories in Europe ( "FR" (France) - "IT" (Italy) - "DE" (Germany) etc. ) 206 * @draft ICU 51 207 */ 208 StringEnumeration* getContainedRegions( URegionType type ) const; 209 210 /** 211 * Returns true if this region contains the supplied other region anywhere in the region hierarchy. 212 * @draft ICU 51 213 */ 214 UBool contains(const Region &other) const; 215 216 /** 217 * For deprecated regions, return an enumeration over the IDs of the regions that are the preferred replacement 218 * regions for this region. Returns null for a non-deprecated region. For example, calling this method with region 219 * "SU" (Soviet Union) would return a list of the regions containing "RU" (Russia), "AM" (Armenia), "AZ" (Azerbaijan), etc... 220 * @draft ICU 51 221 */ 222 StringEnumeration* getPreferredValues() const; 223 224 225 /** 226 * Return this region's canonical region code. 227 * @draft ICU 51 228 */ 229 const char* getRegionCode() const; 230 231 /** 232 * Return this region's numeric code. 233 * Returns a negative value if the given region does not have a numeric code assigned to it. 234 * @draft ICU 51 235 */ 236 int32_t getNumericCode() const; 237 238 /** 239 * Returns the region type of this region. 240 * @draft ICU 51 241 */ 242 URegionType getType() const; 243 244 #ifndef U_HIDE_INTERNAL_API 245 /** 246 * Cleans up statically allocated memory. 247 * @internal 248 */ 249 static void cleanupRegionData(); 250 #endif /* U_HIDE_INTERNAL_API */ 251 252 private: 253 char id[4]; 254 UnicodeString idStr; 255 int32_t code; 256 URegionType type; 257 Region *containingRegion; 258 UVector *containedRegions; 259 UVector *preferredValues; 260 261 /** 262 * Default Constructor. Internal - use factory methods only. 263 * 264 * @internal 265 */ 266 Region(); 267 268 269 /* 270 * Initializes the region data from the ICU resource bundles. The region data 271 * contains the basic relationships such as which regions are known, what the numeric 272 * codes are, any known aliases, and the territory containment data. 273 * 274 * If the region data has already loaded, then this method simply returns without doing 275 * anything meaningful. 276 * @internal 277 */ 278 279 static void loadRegionData(); 280 281 }; 282 283 U_NAMESPACE_END 284 285 #endif /* #if !UCONFIG_NO_FORMATTING */ 286 #endif /* U_HIDE_DRAFT_API */ 287 #endif // REGION_H 288 289 //eof 290
