summaryrefslogtreecommitdiffstats
path: root/intl/icu/source/i18n/region.cpp
blob: 81ddc233384c33a2b5540acfaaa0bf188a23b509 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
// Copyright (C) 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.
*******************************************************************************
*
*
* File REGION.CPP
*
* Modification History:*
*   Date        Name        Description
* 01/15/13      Emmons      Original Port from ICU4J
********************************************************************************
*/

/**
 * \file
 * \brief C++ API: Region classes (territory containment)
 */

#include "unicode/region.h"
#include "unicode/utypes.h"
#include "unicode/uobject.h"
#include "unicode/unistr.h"
#include "unicode/ures.h"
#include "unicode/decimfmt.h"
#include "ucln_in.h"
#include "cstring.h"
#include "mutex.h"
#include "uhash.h"
#include "umutex.h"
#include "uresimp.h"
#include "region_impl.h"

#if !UCONFIG_NO_FORMATTING


U_CDECL_BEGIN

static void U_CALLCONV
deleteRegion(void *obj) {
    delete (icu::Region *)obj;
}

/**
 * Cleanup callback func
 */
static UBool U_CALLCONV region_cleanup(void)
{
    icu::Region::cleanupRegionData();

    return TRUE;
}

U_CDECL_END

U_NAMESPACE_BEGIN

static UInitOnce gRegionDataInitOnce = U_INITONCE_INITIALIZER;
static UVector* availableRegions[URGN_LIMIT];

static UHashtable *regionAliases = NULL;
static UHashtable *regionIDMap = NULL;
static UHashtable *numericCodeMap = NULL;
static UVector *allRegions = NULL;

static const UChar UNKNOWN_REGION_ID [] = { 0x5A, 0x5A, 0 };  /* "ZZ" */
static const UChar OUTLYING_OCEANIA_REGION_ID [] = { 0x51, 0x4F, 0 };  /* "QO" */
static const UChar WORLD_ID [] = { 0x30, 0x30, 0x31, 0 };  /* "001" */
static const UChar RANGE_MARKER = 0x7E; /* '~' */

UOBJECT_DEFINE_RTTI_IMPLEMENTATION(RegionNameEnumeration)

/*
 * 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.
 */
void U_CALLCONV Region::loadRegionData(UErrorCode &status) {

    // Construct service objs first
    LocalUHashtablePointer newRegionIDMap(uhash_open(uhash_hashUnicodeString, uhash_compareUnicodeString, NULL, &status));
    LocalUHashtablePointer newNumericCodeMap(uhash_open(uhash_hashLong,uhash_compareLong,NULL,&status));
    LocalUHashtablePointer newRegionAliases(uhash_open(uhash_hashUnicodeString,uhash_compareUnicodeString,NULL,&status));
    LocalPointer<DecimalFormat> df(new DecimalFormat(status), status);

    LocalPointer<UVector> continents(new UVector(uprv_deleteUObject, uhash_compareUnicodeString, status), status);
    LocalPointer<UVector> groupings(new UVector(uprv_deleteUObject, uhash_compareUnicodeString, status), status);
    allRegions = new UVector(uprv_deleteUObject, uhash_compareUnicodeString, status);

    LocalUResourceBundlePointer metadata(ures_openDirect(NULL,"metadata",&status));
    LocalUResourceBundlePointer metadataAlias(ures_getByKey(metadata.getAlias(),"alias",NULL,&status));
    LocalUResourceBundlePointer territoryAlias(ures_getByKey(metadataAlias.getAlias(),"territory",NULL,&status));

    LocalUResourceBundlePointer supplementalData(ures_openDirect(NULL,"supplementalData",&status));
    LocalUResourceBundlePointer codeMappings(ures_getByKey(supplementalData.getAlias(),"codeMappings",NULL,&status));

    LocalUResourceBundlePointer idValidity(ures_getByKey(supplementalData.getAlias(),"idValidity",NULL,&status));
    LocalUResourceBundlePointer regionList(ures_getByKey(idValidity.getAlias(),"region",NULL,&status));
    LocalUResourceBundlePointer regionRegular(ures_getByKey(regionList.getAlias(),"regular",NULL,&status));
    LocalUResourceBundlePointer regionMacro(ures_getByKey(regionList.getAlias(),"macroregion",NULL,&status));
    LocalUResourceBundlePointer regionUnknown(ures_getByKey(regionList.getAlias(),"unknown",NULL,&status));

    LocalUResourceBundlePointer territoryContainment(ures_getByKey(supplementalData.getAlias(),"territoryContainment",NULL,&status));
    LocalUResourceBundlePointer worldContainment(ures_getByKey(territoryContainment.getAlias(),"001",NULL,&status));
    LocalUResourceBundlePointer groupingContainment(ures_getByKey(territoryContainment.getAlias(),"grouping",NULL,&status));

    if (U_FAILURE(status)) {
        return;
    }

    // now, initialize
    df->setParseIntegerOnly(TRUE);
    uhash_setValueDeleter(newRegionIDMap.getAlias(), deleteRegion);  // regionIDMap owns objs
    uhash_setKeyDeleter(newRegionAliases.getAlias(), uprv_deleteUObject); // regionAliases owns the string keys


    while ( ures_hasNext(regionRegular.getAlias()) ) {
        UnicodeString regionName = ures_getNextUnicodeString(regionRegular.getAlias(),NULL,&status);
        int32_t rangeMarkerLocation = regionName.indexOf(RANGE_MARKER);
        UChar buf[6];
        regionName.extract(buf,6,status);
        if ( rangeMarkerLocation > 0 ) {
            UChar endRange = regionName.charAt(rangeMarkerLocation+1);
            buf[rangeMarkerLocation] = 0;
            while ( buf[rangeMarkerLocation-1] <= endRange ) {
                LocalPointer<UnicodeString> newRegion(new UnicodeString(buf), status);
                allRegions->addElement(newRegion.orphan(),status);
                buf[rangeMarkerLocation-1]++;
            }
        } else {
            LocalPointer<UnicodeString> newRegion(new UnicodeString(regionName), status);
            allRegions->addElement(newRegion.orphan(),status);
        }
    }

    while ( ures_hasNext(regionMacro.getAlias()) ) {
        UnicodeString regionName = ures_getNextUnicodeString(regionMacro.getAlias(),NULL,&status);
        int32_t rangeMarkerLocation = regionName.indexOf(RANGE_MARKER);
        UChar buf[6];
        regionName.extract(buf,6,status);
        if ( rangeMarkerLocation > 0 ) {
            UChar endRange = regionName.charAt(rangeMarkerLocation+1);
            buf[rangeMarkerLocation] = 0;
            while ( buf[rangeMarkerLocation-1] <= endRange ) {
                LocalPointer<UnicodeString> newRegion(new UnicodeString(buf), status);
                allRegions->addElement(newRegion.orphan(),status);
                buf[rangeMarkerLocation-1]++;
            }
        } else {
            LocalPointer<UnicodeString> newRegion(new UnicodeString(regionName), status);
            allRegions->addElement(newRegion.orphan(),status);
        }
    }

    while ( ures_hasNext(regionUnknown.getAlias()) ) {
        LocalPointer<UnicodeString> regionName (new UnicodeString(ures_getNextUnicodeString(regionUnknown.getAlias(),NULL,&status),status));
        allRegions->addElement(regionName.orphan(),status);
    }

    while ( ures_hasNext(worldContainment.getAlias()) ) {
        UnicodeString *continentName = new UnicodeString(ures_getNextUnicodeString(worldContainment.getAlias(),NULL,&status));
        continents->addElement(continentName,status);
    }

    while ( ures_hasNext(groupingContainment.getAlias()) ) {
        UnicodeString *groupingName = new UnicodeString(ures_getNextUnicodeString(groupingContainment.getAlias(),NULL,&status));
        groupings->addElement(groupingName,status);
    }

    for ( int32_t i = 0 ; i < allRegions->size() ; i++ ) {
        LocalPointer<Region> r(new Region(), status);
        if ( U_FAILURE(status) ) {
           return;
        }
        UnicodeString *regionName = (UnicodeString *)allRegions->elementAt(i);
        r->idStr = *regionName;

        r->idStr.extract(0,r->idStr.length(),r->id,sizeof(r->id),US_INV);
        r->type = URGN_TERRITORY; // Only temporary - figure out the real type later once the aliases are known.

        Formattable result;
        UErrorCode ps = U_ZERO_ERROR;
        df->parse(r->idStr,result,ps);
        if ( U_SUCCESS(ps) ) {
            r->code = result.getLong(); // Convert string to number
            uhash_iput(newNumericCodeMap.getAlias(),r->code,(void *)(r.getAlias()),&status);
            r->type = URGN_SUBCONTINENT;
        } else {
            r->code = -1;
        }
        void* idStrAlias = (void*)&(r->idStr); // about to orphan 'r'. Save this off.
        uhash_put(newRegionIDMap.getAlias(),idStrAlias,(void *)(r.orphan()),&status); // regionIDMap takes ownership
    }

    // Process the territory aliases
    while ( ures_hasNext(territoryAlias.getAlias()) ) {
        LocalUResourceBundlePointer res(ures_getNextResource(territoryAlias.getAlias(),NULL,&status));
        const char *aliasFrom = ures_getKey(res.getAlias());
        LocalPointer<UnicodeString> aliasFromStr(new UnicodeString(aliasFrom, -1, US_INV), status);
        UnicodeString aliasTo = ures_getUnicodeStringByKey(res.getAlias(),"replacement",&status);
        res.adoptInstead(NULL);

        const Region *aliasToRegion = (Region *) uhash_get(newRegionIDMap.getAlias(),&aliasTo);
        Region *aliasFromRegion = (Region *)uhash_get(newRegionIDMap.getAlias(),aliasFromStr.getAlias());

        if ( aliasToRegion != NULL && aliasFromRegion == NULL ) { // This is just an alias from some string to a region
            uhash_put(newRegionAliases.getAlias(),(void *)aliasFromStr.orphan(), (void *)aliasToRegion,&status);
        } else {
            if ( aliasFromRegion == NULL ) { // Deprecated region code not in the master codes list - so need to create a deprecated region for it.
                LocalPointer<Region> newRgn(new Region, status); 
                if ( U_SUCCESS(status) ) {
                    aliasFromRegion = newRgn.orphan();
                } else {
                    return; // error out
                }
                aliasFromRegion->idStr.setTo(*aliasFromStr);
                aliasFromRegion->idStr.extract(0,aliasFromRegion->idStr.length(),aliasFromRegion->id,sizeof(aliasFromRegion->id),US_INV);
                uhash_put(newRegionIDMap.getAlias(),(void *)&(aliasFromRegion->idStr),(void *)aliasFromRegion,&status);
                Formattable result;
                UErrorCode ps = U_ZERO_ERROR;
                df->parse(aliasFromRegion->idStr,result,ps);
                if ( U_SUCCESS(ps) ) {
                    aliasFromRegion->code = result.getLong(); // Convert string to number
                    uhash_iput(newNumericCodeMap.getAlias(),aliasFromRegion->code,(void *)aliasFromRegion,&status);
                } else {
                    aliasFromRegion->code = -1;
                }
                aliasFromRegion->type = URGN_DEPRECATED;
            } else {
                aliasFromRegion->type = URGN_DEPRECATED;
            }

            {
                LocalPointer<UVector> newPreferredValues(new UVector(uprv_deleteUObject, uhash_compareUnicodeString, status), status);
                aliasFromRegion->preferredValues = newPreferredValues.orphan();
            }
            if( U_FAILURE(status)) {
                return;
            }
            UnicodeString currentRegion;
            //currentRegion.remove();   TODO: was already 0 length?
            for (int32_t i = 0 ; i < aliasTo.length() ; i++ ) {
                if ( aliasTo.charAt(i) != 0x0020 ) {
                    currentRegion.append(aliasTo.charAt(i));
                }
                if ( aliasTo.charAt(i) == 0x0020 || i+1 == aliasTo.length() ) {
                    Region *target = (Region *)uhash_get(newRegionIDMap.getAlias(),(void *)&currentRegion);
                    if (target) {
                        LocalPointer<UnicodeString> preferredValue(new UnicodeString(target->idStr), status);
                        aliasFromRegion->preferredValues->addElement((void *)preferredValue.orphan(),status);  // may add null if err
                    }
                    currentRegion.remove();
                }
            }
        }
    }

    // Process the code mappings - This will allow us to assign numeric codes to most of the territories.
    while ( ures_hasNext(codeMappings.getAlias()) ) {
        UResourceBundle *mapping = ures_getNextResource(codeMappings.getAlias(),NULL,&status);
        if ( ures_getType(mapping) == URES_ARRAY && ures_getSize(mapping) == 3) {
            UnicodeString codeMappingID = ures_getUnicodeStringByIndex(mapping,0,&status);
            UnicodeString codeMappingNumber = ures_getUnicodeStringByIndex(mapping,1,&status);
            UnicodeString codeMapping3Letter = ures_getUnicodeStringByIndex(mapping,2,&status);

            Region *r = (Region *)uhash_get(newRegionIDMap.getAlias(),(void *)&codeMappingID);
            if ( r ) {
                Formattable result;
                UErrorCode ps = U_ZERO_ERROR;
                df->parse(codeMappingNumber,result,ps);
                if ( U_SUCCESS(ps) ) {
                    r->code = result.getLong(); // Convert string to number
                    uhash_iput(newNumericCodeMap.getAlias(),r->code,(void *)r,&status);
                }
                LocalPointer<UnicodeString> code3(new UnicodeString(codeMapping3Letter), status);
                uhash_put(newRegionAliases.getAlias(),(void *)code3.orphan(), (void *)r,&status);
            }
        }
        ures_close(mapping);
    }

    // Now fill in the special cases for WORLD, UNKNOWN, CONTINENTS, and GROUPINGS
    Region *r;
    UnicodeString WORLD_ID_STRING(WORLD_ID);
    r = (Region *) uhash_get(newRegionIDMap.getAlias(),(void *)&WORLD_ID_STRING);
    if ( r ) {
        r->type = URGN_WORLD;
    }

    UnicodeString UNKNOWN_REGION_ID_STRING(UNKNOWN_REGION_ID);
    r = (Region *) uhash_get(newRegionIDMap.getAlias(),(void *)&UNKNOWN_REGION_ID_STRING);
    if ( r ) {
        r->type = URGN_UNKNOWN;
    }

    for ( int32_t i = 0 ; i < continents->size() ; i++ ) {
        r = (Region *) uhash_get(newRegionIDMap.getAlias(),(void *)continents->elementAt(i));
        if ( r ) {
            r->type = URGN_CONTINENT;
        }
    }

    for ( int32_t i = 0 ; i < groupings->size() ; i++ ) {
        r = (Region *) uhash_get(newRegionIDMap.getAlias(),(void *)groupings->elementAt(i));
        if ( r ) {
            r->type = URGN_GROUPING;
        }
    }

    // Special case: The region code "QO" (Outlying Oceania) is a subcontinent code added by CLDR
    // even though it looks like a territory code.  Need to handle it here.

    UnicodeString OUTLYING_OCEANIA_REGION_ID_STRING(OUTLYING_OCEANIA_REGION_ID);
    r = (Region *) uhash_get(newRegionIDMap.getAlias(),(void *)&OUTLYING_OCEANIA_REGION_ID_STRING);
    if ( r ) {
        r->type = URGN_SUBCONTINENT;
    }

    // Load territory containment info from the supplemental data.
    while ( ures_hasNext(territoryContainment.getAlias()) ) {
        LocalUResourceBundlePointer mapping(ures_getNextResource(territoryContainment.getAlias(),NULL,&status));
        if( U_FAILURE(status) ) {
            return;  // error out
        }
        const char *parent = ures_getKey(mapping.getAlias());
        if (uprv_strcmp(parent, "containedGroupings") == 0 || uprv_strcmp(parent, "deprecated") == 0) {
            continue; // handle new pseudo-parent types added in ICU data per cldrbug 7808; for now just skip.
            // #11232 is to do something useful with these.
        }
        UnicodeString parentStr = UnicodeString(parent, -1 , US_INV);
        Region *parentRegion = (Region *) uhash_get(newRegionIDMap.getAlias(),(void *)&parentStr);

        for ( int j = 0 ; j < ures_getSize(mapping.getAlias()); j++ ) {
            UnicodeString child = ures_getUnicodeStringByIndex(mapping.getAlias(),j,&status);
            Region *childRegion = (Region *) uhash_get(newRegionIDMap.getAlias(),(void *)&child);
            if ( parentRegion != NULL && childRegion != NULL ) {

                // Add the child region to the set of regions contained by the parent
                if (parentRegion->containedRegions == NULL) {
                    parentRegion->containedRegions = new UVector(uprv_deleteUObject, uhash_compareUnicodeString, status);
                }

                LocalPointer<UnicodeString> childStr(new UnicodeString(), status);
                if( U_FAILURE(status) ) {
                    return;  // error out
                }
                childStr->fastCopyFrom(childRegion->idStr);
                parentRegion->containedRegions->addElement((void *)childStr.orphan(),status);

                // Set the parent region to be the containing region of the child.
                // Regions of type GROUPING can't be set as the parent, since another region
                // such as a SUBCONTINENT, CONTINENT, or WORLD must always be the parent.
                if ( parentRegion->type != URGN_GROUPING) {
                    childRegion->containingRegion = parentRegion;
                }
            }
        }
    }

    // Create the availableRegions lists
    int32_t pos = UHASH_FIRST;
    while ( const UHashElement* element = uhash_nextElement(newRegionIDMap.getAlias(),&pos)) {
        Region *ar = (Region *)element->value.pointer;
        if ( availableRegions[ar->type] == NULL ) {
            LocalPointer<UVector> newAr(new UVector(uprv_deleteUObject, uhash_compareUnicodeString, status), status);
            availableRegions[ar->type] = newAr.orphan();
        }
        LocalPointer<UnicodeString> arString(new UnicodeString(ar->idStr), status);
        if( U_FAILURE(status) ) {
            return;  // error out
        }
        availableRegions[ar->type]->addElement((void *)arString.orphan(),status);
    }
    
    ucln_i18n_registerCleanup(UCLN_I18N_REGION, region_cleanup);
    // copy hashtables
    numericCodeMap = newNumericCodeMap.orphan();
    regionIDMap = newRegionIDMap.orphan();
    regionAliases = newRegionAliases.orphan();
}

void Region::cleanupRegionData() {
    for (int32_t i = 0 ; i < URGN_LIMIT ; i++ ) {
        if ( availableRegions[i] ) {
            delete availableRegions[i];
        }
    }

    if (regionAliases) {
        uhash_close(regionAliases);
    }

    if (numericCodeMap) {
        uhash_close(numericCodeMap);
    }

    if (regionIDMap) {
        uhash_close(regionIDMap);
    }
    if (allRegions) {
        allRegions->removeAllElements(); // Don't need the temporary list anymore.
        delete allRegions;
        allRegions = NULL;
    }

    regionAliases = numericCodeMap = regionIDMap = NULL;

    gRegionDataInitOnce.reset();
}

Region::Region ()
        : code(-1),
          type(URGN_UNKNOWN),
          containingRegion(NULL),
          containedRegions(NULL),
          preferredValues(NULL) {
    id[0] = 0;
}

Region::~Region () {
        if (containedRegions) {
            delete containedRegions;
        }
        if (preferredValues) {
            delete preferredValues;
        }
}

/**
 * Returns true if the two regions are equal.
 * Per PMC, just use pointer compare, since we have at most one instance of each Region.
 */
UBool
Region::operator==(const Region &that) const {
    return (idStr == that.idStr);
}

/**
 * Returns true if the two regions are NOT equal; that is, if operator ==() returns false.
 * Per PMC, just use pointer compare, since we have at most one instance of each Region.
 */
UBool
Region::operator!=(const Region &that) const {
        return (idStr != that.idStr);
}

/**
 * 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 NULL or not recognized, the appropriate error code will be set ( U_ILLEGAL_ARGUMENT_ERROR )
 */
const Region* U_EXPORT2
Region::getInstance(const char *region_code, UErrorCode &status) {

    umtx_initOnce(gRegionDataInitOnce, &loadRegionData, status);
    if (U_FAILURE(status)) {
        return NULL;
    }

    if ( !region_code ) {
        status = U_ILLEGAL_ARGUMENT_ERROR;
        return NULL;
    }

    UnicodeString regionCodeString = UnicodeString(region_code, -1, US_INV);
    Region *r = (Region *)uhash_get(regionIDMap,(void *)&regionCodeString);

    if ( !r ) {
        r = (Region *)uhash_get(regionAliases,(void *)&regionCodeString);
    }

    if ( !r ) { // Unknown region code
        status = U_ILLEGAL_ARGUMENT_ERROR;
        return NULL;
    }

    if ( r->type == URGN_DEPRECATED && r->preferredValues->size() == 1) {
        StringEnumeration *pv = r->getPreferredValues(status);
        pv->reset(status);
        const UnicodeString *ustr = pv->snext(status);
        r = (Region *)uhash_get(regionIDMap,(void *)ustr);
        delete pv;
    }

    return r;

}

/**
 * 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 ).
 */
const Region* U_EXPORT2
Region::getInstance (int32_t code, UErrorCode &status) {

    umtx_initOnce(gRegionDataInitOnce, &loadRegionData, status);
    if (U_FAILURE(status)) {
        return NULL;
    }

    Region *r = (Region *)uhash_iget(numericCodeMap,code);

    if ( !r ) { // Just in case there's an alias that's numeric, try to find it.
        UnicodeString pat = UNICODE_STRING_SIMPLE("0");
        LocalPointer<DecimalFormat> df(new DecimalFormat(pat,status), status);
        if( U_FAILURE(status) ) {
            return NULL;
        }
        UnicodeString id;
        id.remove();
        FieldPosition posIter;
        df->format(code,id, posIter, status);
        r = (Region *)uhash_get(regionAliases,&id);
    }

    if( U_FAILURE(status) ) {
        return NULL;
    }

    if ( !r ) {
        status = U_ILLEGAL_ARGUMENT_ERROR;
        return NULL;
    }

    if ( r->type == URGN_DEPRECATED && r->preferredValues->size() == 1) {
        StringEnumeration *pv = r->getPreferredValues(status);
        pv->reset(status);
        const UnicodeString *ustr = pv->snext(status);
        r = (Region *)uhash_get(regionIDMap,(void *)ustr);
        delete pv;
    }

    return r;
}


/**
 * Returns an enumeration over the IDs of all known regions that match the given type.
 */
StringEnumeration* U_EXPORT2
Region::getAvailable(URegionType type, UErrorCode &status) {
    umtx_initOnce(gRegionDataInitOnce, &loadRegionData, status); // returns immediately if U_FAILURE(status)
    if (U_FAILURE(status)) {
        return NULL;
    }
    return new RegionNameEnumeration(availableRegions[type],status);
}

/**
 * Returns a pointer to the region that contains this region.  Returns NULL 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).
 */
const Region*
Region::getContainingRegion() const {
    UErrorCode status = U_ZERO_ERROR;
    umtx_initOnce(gRegionDataInitOnce, &loadRegionData, status);
    return containingRegion;
}

/**
 * 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 NULL 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. NULL will be returned in this case. For example, calling this method
 * with region "IT" (Italy) for type "URGN_CONTINENT" returns the region "150" ( Europe ).
 */
const Region*
Region::getContainingRegion(URegionType type) const {
    UErrorCode status = U_ZERO_ERROR;
    umtx_initOnce(gRegionDataInitOnce, &loadRegionData, status);
    if ( containingRegion == NULL ) {
        return NULL;
    }

    return ( containingRegion->type == type )? containingRegion: containingRegion->getContainingRegion(type);
}

/**
 * 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 NULL 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).
 */
StringEnumeration*
Region::getContainedRegions(UErrorCode &status) const {
    umtx_initOnce(gRegionDataInitOnce, &loadRegionData, status); // returns immediately if U_FAILURE(status)
    if (U_FAILURE(status)) {
        return NULL;
    }
    return new RegionNameEnumeration(containedRegions,status);
}

/**
 * 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. )
 */
StringEnumeration*
Region::getContainedRegions( URegionType type, UErrorCode &status ) const {
    umtx_initOnce(gRegionDataInitOnce, &loadRegionData, status); // returns immediately if U_FAILURE(status)
    if (U_FAILURE(status)) {
        return NULL;
    }

    UVector *result = new UVector(NULL, uhash_compareChars, status);

    StringEnumeration *cr = getContainedRegions(status);

    for ( int32_t i = 0 ; i < cr->count(status) ; i++ ) {
        const char *id = cr->next(NULL,status);
        const Region *r = Region::getInstance(id,status);
        if ( r->getType() == type ) {
            result->addElement((void *)&r->idStr,status);
        } else {
            StringEnumeration *children = r->getContainedRegions(type, status);
            for ( int32_t j = 0 ; j < children->count(status) ; j++ ) {
                const char *id2 = children->next(NULL,status);
                const Region *r2 = Region::getInstance(id2,status);
                result->addElement((void *)&r2->idStr,status);
            }
            delete children;
        }
    }
    delete cr;
    StringEnumeration* resultEnumeration = new RegionNameEnumeration(result,status);
    delete result;
    return resultEnumeration;
}

/**
 * Returns true if this region contains the supplied other region anywhere in the region hierarchy.
 */
UBool
Region::contains(const Region &other) const {
    UErrorCode status = U_ZERO_ERROR;
    umtx_initOnce(gRegionDataInitOnce, &loadRegionData, status);

    if (!containedRegions) {
          return FALSE;
    }
    if (containedRegions->contains((void *)&other.idStr)) {
        return TRUE;
    } else {
        for ( int32_t i = 0 ; i < containedRegions->size() ; i++ ) {
            UnicodeString *crStr = (UnicodeString *)containedRegions->elementAt(i);
            Region *cr = (Region *) uhash_get(regionIDMap,(void *)crStr);
            if ( cr && cr->contains(other) ) {
                return TRUE;
            }
        }
    }

    return FALSE;
}

/**
 * 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...
 */
StringEnumeration*
Region::getPreferredValues(UErrorCode &status) const {
    umtx_initOnce(gRegionDataInitOnce, &loadRegionData, status); // returns immediately if U_FAILURE(status)
    if (U_FAILURE(status) ||  type != URGN_DEPRECATED) {
        return NULL;
    }
    return new RegionNameEnumeration(preferredValues,status);
}


/**
 * Return this region's canonical region code.
 */
const char*
Region::getRegionCode() const {
    return id;
}

int32_t
Region::getNumericCode() const {
    return code;
}

/**
 * Returns the region type of this region.
 */
URegionType
Region::getType() const {
    return type;
}

RegionNameEnumeration::RegionNameEnumeration(UVector *fNameList, UErrorCode& status) {
    pos=0;
    if (fNameList && U_SUCCESS(status)) {
        fRegionNames = new UVector(uprv_deleteUObject, uhash_compareUnicodeString, fNameList->size(),status);
        for ( int32_t i = 0 ; i < fNameList->size() ; i++ ) {
            UnicodeString* this_region_name = (UnicodeString *)fNameList->elementAt(i);
            UnicodeString* new_region_name = new UnicodeString(*this_region_name);
            fRegionNames->addElement((void *)new_region_name,status);
        }
    }
    else {
        fRegionNames = NULL;
    }
}

const UnicodeString*
RegionNameEnumeration::snext(UErrorCode& status) {
  if (U_FAILURE(status) || (fRegionNames==NULL)) {
    return NULL;
  }
  const UnicodeString* nextStr = (const UnicodeString *)fRegionNames->elementAt(pos);
  if (nextStr!=NULL) {
    pos++;
  }
  return nextStr;
}

void
RegionNameEnumeration::reset(UErrorCode& /*status*/) {
    pos=0;
}

int32_t
RegionNameEnumeration::count(UErrorCode& /*status*/) const {
    return (fRegionNames==NULL) ? 0 : fRegionNames->size();
}

RegionNameEnumeration::~RegionNameEnumeration() {
    delete fRegionNames;
}

U_NAMESPACE_END

#endif /* #if !UCONFIG_NO_FORMATTING */

//eof