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add CountryUtils #1459

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dac0fa7
add CountryUtils
jack5505 Oct 5, 2025
c2e7a7b
add countryCode
jack5505 Oct 6, 2025
e85e5c4
Merge pull request #1 from jack5505/LocalUtils
jack5505 Oct 6, 2025
3b3d331
add countryCode
jack5505 Oct 6, 2025
901b206
add countryCode
jack5505 Oct 6, 2025
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301 changes: 293 additions & 8 deletions src/main/java/org/apache/commons/lang3/LocaleUtils.java
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Original file line number Diff line number Diff line change
Expand Up @@ -17,14 +17,7 @@

package org.apache.commons.lang3;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Locale;
import java.util.Set;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.function.Predicate;
Expand All @@ -46,6 +39,298 @@ public class LocaleUtils {
/**
* Avoids synchronization, initializes on demand.
*/

private static final Map<String,String> ISO2_TO_NUMERIC;

static {
Map<String, String> numeric = new HashMap<>();
numeric.put("AF", "004");
numeric.put("AL", "008");
numeric.put("DZ", "012");
numeric.put("AS", "016");
numeric.put("AD", "020");
numeric.put("AO", "024");
numeric.put("AI", "660");
numeric.put("AQ", "010");
numeric.put("AG", "028");
numeric.put("AR", "032");
numeric.put("AM", "051");
numeric.put("AW", "533");
numeric.put("AU", "036");
numeric.put("AT", "040");
numeric.put("AZ", "031");
numeric.put("BS", "044");
numeric.put("BH", "048");
numeric.put("BD", "050");
numeric.put("BB", "052");
numeric.put("BY", "112");
numeric.put("BE", "056");
numeric.put("BZ", "084");
numeric.put("BJ", "204");
numeric.put("BM", "060");
numeric.put("BT", "064");
numeric.put("BO", "068");
numeric.put("BQ", "535");
numeric.put("BA", "070");
numeric.put("BW", "072");
numeric.put("BV", "074");
numeric.put("BR", "076");
numeric.put("IO", "086");
numeric.put("BN", "096");
numeric.put("BG", "100");
numeric.put("BF", "854");
numeric.put("BI", "108");
numeric.put("CV", "132");
numeric.put("KH", "116");
numeric.put("CM", "120");
numeric.put("CA", "124");
numeric.put("KY", "136");
numeric.put("CF", "140");
numeric.put("TD", "148");
numeric.put("CL", "152");
numeric.put("CN", "156");
numeric.put("CX", "162");
numeric.put("CC", "166");
numeric.put("CO", "170");
numeric.put("KM", "174");
numeric.put("CG", "178");
numeric.put("CD", "180");
numeric.put("CK", "184");
numeric.put("CR", "188");
numeric.put("CI", "384");
numeric.put("HR", "191");
numeric.put("CU", "192");
numeric.put("CW", "531");
numeric.put("CY", "196");
numeric.put("CZ", "203");
numeric.put("DK", "208");
numeric.put("DJ", "262");
numeric.put("DM", "212");
numeric.put("DO", "214");
numeric.put("EC", "218");
numeric.put("EG", "818");
numeric.put("SV", "222");
numeric.put("GQ", "226");
numeric.put("ER", "232");
numeric.put("EE", "233");
numeric.put("SZ", "748");
numeric.put("ET", "231");
numeric.put("FK", "238");
numeric.put("FO", "234");
numeric.put("FJ", "242");
numeric.put("FI", "246");
numeric.put("FR", "250");
numeric.put("GF", "254");
numeric.put("PF", "258");
numeric.put("TF", "260");
numeric.put("GA", "266");
numeric.put("GM", "270");
numeric.put("GE", "268");
numeric.put("DE", "276");
numeric.put("GH", "288");
numeric.put("GI", "292");
numeric.put("GR", "300");
numeric.put("GL", "304");
numeric.put("GD", "308");
numeric.put("GP", "312");
numeric.put("GU", "316");
numeric.put("GT", "320");
numeric.put("GG", "831");
numeric.put("GN", "324");
numeric.put("GW", "624");
numeric.put("GY", "328");
numeric.put("HT", "332");
numeric.put("HM", "334");
numeric.put("VA", "336");
numeric.put("HN", "340");
numeric.put("HK", "344");
numeric.put("HU", "348");
numeric.put("IS", "352");
numeric.put("IN", "356");
numeric.put("ID", "360");
numeric.put("IR", "364");
numeric.put("IQ", "368");
numeric.put("IE", "372");
numeric.put("IM", "833");
numeric.put("IL", "376");
numeric.put("IT", "380");
numeric.put("JM", "388");
numeric.put("JP", "392");
numeric.put("JE", "832");
numeric.put("JO", "400");
numeric.put("KZ", "398");
numeric.put("KE", "404");
numeric.put("KI", "296");
numeric.put("KP", "408");
numeric.put("KR", "410");
numeric.put("KW", "414");
numeric.put("KG", "417");
numeric.put("LA", "418");
numeric.put("LV", "428");
numeric.put("LB", "422");
numeric.put("LS", "426");
numeric.put("LR", "430");
numeric.put("LY", "434");
numeric.put("LI", "438");
numeric.put("LT", "440");
numeric.put("LU", "442");
numeric.put("MO", "446");
numeric.put("MG", "450");
numeric.put("MW", "454");
numeric.put("MY", "458");
numeric.put("MV", "462");
numeric.put("ML", "466");
numeric.put("MT", "470");
numeric.put("MH", "584");
numeric.put("MQ", "474");
numeric.put("MR", "478");
numeric.put("MU", "480");
numeric.put("YT", "175");
numeric.put("MX", "484");
numeric.put("FM", "583");
numeric.put("MD", "498");
numeric.put("MC", "492");
numeric.put("MN", "496");
numeric.put("ME", "499");
numeric.put("MS", "500");
numeric.put("MA", "504");
numeric.put("MZ", "508");
numeric.put("MM", "104");
numeric.put("NA", "516");
numeric.put("NR", "520");
numeric.put("NP", "524");
numeric.put("NL", "528");
numeric.put("NC", "540");
numeric.put("NZ", "554");
numeric.put("NI", "558");
numeric.put("NE", "562");
numeric.put("NG", "566");
numeric.put("NU", "570");
numeric.put("NF", "574");
numeric.put("MK", "807");
numeric.put("MP", "580");
numeric.put("NO", "578");
numeric.put("OM", "512");
numeric.put("PK", "586");
numeric.put("PW", "585");
numeric.put("PS", "275");
numeric.put("PA", "591");
numeric.put("PG", "598");
numeric.put("PY", "600");
numeric.put("PE", "604");
numeric.put("PH", "608");
numeric.put("PN", "612");
numeric.put("PL", "616");
numeric.put("PT", "620");
numeric.put("PR", "630");
numeric.put("QA", "634");

numeric.put("RE", "638");
numeric.put("RO", "642");
numeric.put("RU", "643");
numeric.put("RW", "646");
numeric.put("BL", "652");
numeric.put("SH", "654");
numeric.put("KN", "659");
numeric.put("LC", "662");
numeric.put("MF", "663");
numeric.put("PM", "666");
numeric.put("VC", "670");
numeric.put("WS", "882");
numeric.put("SM", "674");
numeric.put("ST", "678");
numeric.put("SA", "682");
numeric.put("SN", "686");
numeric.put("RS", "688");
numeric.put("SC", "690");
numeric.put("SL", "694");
numeric.put("SG", "702");
numeric.put("SX", "534");
numeric.put("SK", "703");
numeric.put("SI", "705");
numeric.put("ZW", "716");
numeric.put("SB", "090");
numeric.put("SO", "706");
numeric.put("ZA", "710");
numeric.put("GS", "239");
numeric.put("SS", "728");
numeric.put("ES", "724");
numeric.put("LK", "144");
numeric.put("SD", "729");
numeric.put("SR", "740");
numeric.put("SJ", "744");
numeric.put("SE", "752");
numeric.put("CH", "756");

numeric.put("SY", "760");
numeric.put("TW", "158");
numeric.put("TJ", "762");
numeric.put("TZ", "834");
numeric.put("TH", "764");
numeric.put("TL", "626");
numeric.put("TG", "768");
numeric.put("TK", "772");
numeric.put("TO", "776");
numeric.put("TT", "780");
numeric.put("TN", "788");
numeric.put("TR", "792");
numeric.put("TM", "795");
numeric.put("TC", "796");
numeric.put("TV", "798");
numeric.put("UG", "800");
numeric.put("UA", "804");
numeric.put("AE", "784");
numeric.put("GB", "826");
numeric.put("UM", "581");
numeric.put("US", "840");
numeric.put("UY", "858");
numeric.put("UZ", "860");
numeric.put("VU", "548");
numeric.put("VE", "862");
numeric.put("VN", "704");
numeric.put("VG", "092");
numeric.put("VI", "850");
numeric.put("WF", "876");
numeric.put("EH", "732");
numeric.put("YE", "887");
numeric.put("ZM", "894");
ISO2_TO_NUMERIC = Collections.unmodifiableMap(numeric);

}

/**
*
* This method performs a reverse lookup in the ISO2_TO_NUMERIC map to find the
* two-letter country code that corresponds to the given three-digit numeric code.
*
*
* @param numeric the three-digit numeric country code (e.g., "840" for US)
* @return the corresponding two-letter ISO country code (e.g., "US"), or null if not found
* */
public static String numericToIso2(final String numeric) {
Objects.requireNonNull(numeric, "Numeric country code must not be null");
for (Map.Entry<String, String> entry : ISO2_TO_NUMERIC.entrySet()) {
if (entry.getValue().equals(numeric)) {
return entry.getKey();
}
}
return null;
}

/**
* Converts a two-letter ISO country code to its corresponding three-digit numeric code.
*
* @param iso2 the two-letter ISO country code (e.g., "US")
* @return the corresponding three-digit numeric country code (e.g., "840"), or null if not found
*/
public static String toNumeric(final String iso2) {
Objects.requireNonNull(iso2, "ISO2 country code must not be null");
return ISO2_TO_NUMERIC.getOrDefault(iso2,null);
}




private static final class SyncAvoid {

/** Private unmodifiable and sorted list of available locales. */
Expand Down
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