summaryrefslogtreecommitdiffstats
path: root/intl/icu/source/common/uresbund.cpp
blob: d02bba8921e6408abfa446e945bb0e16bb4312ca (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
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
2405
2406
2407
2408
2409
2410
2411
2412
2413
2414
2415
2416
2417
2418
2419
2420
2421
2422
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437
2438
2439
2440
2441
2442
2443
2444
2445
2446
2447
2448
2449
2450
2451
2452
2453
2454
2455
2456
2457
2458
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468
2469
2470
2471
2472
2473
2474
2475
2476
2477
2478
2479
2480
2481
2482
2483
2484
2485
2486
2487
2488
2489
2490
2491
2492
2493
2494
2495
2496
2497
2498
2499
2500
2501
2502
2503
2504
2505
2506
2507
2508
2509
2510
2511
2512
2513
2514
2515
2516
2517
2518
2519
2520
2521
2522
2523
2524
2525
2526
2527
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545
2546
2547
2548
2549
2550
2551
2552
2553
2554
2555
2556
2557
2558
2559
2560
2561
2562
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572
2573
2574
2575
2576
2577
2578
2579
2580
2581
2582
2583
2584
2585
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598
2599
2600
2601
2602
2603
2604
2605
2606
2607
2608
2609
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620
2621
2622
2623
2624
2625
2626
2627
2628
2629
2630
2631
2632
2633
2634
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645
2646
2647
2648
2649
2650
2651
2652
2653
2654
2655
2656
2657
2658
2659
2660
2661
2662
2663
2664
2665
2666
2667
2668
2669
2670
2671
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682
2683
2684
2685
2686
2687
2688
2689
2690
2691
2692
2693
2694
2695
2696
2697
2698
2699
2700
2701
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712
2713
2714
2715
2716
2717
2718
2719
2720
2721
2722
2723
2724
2725
2726
2727
2728
2729
2730
2731
2732
2733
2734
2735
2736
2737
2738
2739
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750
2751
2752
2753
2754
2755
2756
2757
2758
2759
2760
2761
2762
2763
2764
2765
2766
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777
2778
2779
2780
2781
2782
2783
2784
2785
2786
2787
2788
2789
2790
2791
2792
2793
2794
2795
2796
2797
2798
2799
2800
2801
2802
2803
2804
2805
2806
2807
2808
2809
2810
2811
2812
2813
2814
2815
2816
2817
2818
2819
2820
2821
2822
2823
2824
2825
2826
2827
2828
2829
2830
2831
2832
2833
2834
2835
2836
2837
2838
2839
2840
2841
2842
2843
2844
2845
2846
2847
2848
2849
2850
2851
2852
2853
2854
2855
2856
2857
2858
2859
2860
2861
2862
2863
2864
2865
2866
2867
2868
2869
2870
2871
2872
2873
2874
2875
2876
2877
2878
2879
2880
2881
2882
2883
2884
2885
2886
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901
2902
2903
2904
2905
2906
2907
2908
2909
2910
2911
2912
2913
2914
2915
2916
2917
2918
2919
2920
2921
2922
2923
2924
2925
2926
2927
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942
2943
2944
2945
2946
2947
2948
2949
2950
2951
2952
2953
2954
2955
2956
2957
2958
2959
2960
2961
2962
2963
2964
2965
2966
2967
2968
2969
2970
2971
2972
2973
2974
2975
2976
2977
2978
2979
2980
2981
2982
2983
2984
2985
2986
2987
2988
2989
2990
2991
2992
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002
3003
3004
3005
3006
3007
3008
3009
3010
3011
3012
3013
3014
3015
3016
3017
3018
3019
3020
3021
3022
3023
3024
3025
3026
3027
3028
3029
3030
3031
3032
3033
3034
3035
3036
3037
3038
3039
3040
3041
3042
3043
3044
3045
3046
3047
3048
3049
3050
3051
3052
3053
3054
3055
3056
3057
3058
3059
3060
3061
3062
3063
3064
3065
3066
3067
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082
3083
3084
3085
3086
3087
3088
3089
3090
3091
3092
3093
3094
3095
3096
3097
3098
3099
3100
3101
3102
3103
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113
3114
3115
3116
3117
3118
3119
3120
3121
3122
3123
3124
3125
3126
3127
3128
3129
3130
3131
3132
3133
3134
3135
3136
3137
3138
3139
3140
3141
3142
3143
3144
3145
3146
3147
3148
3149
3150
3151
3152
3153
3154
3155
3156
3157
3158
3159
3160
3161
3162
3163
3164
3165
3166
3167
3168
3169
3170
3171
3172
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190
3191
3192
3193
3194
3195
3196
3197
3198
3199
3200
3201
3202
3203
3204
3205
3206
3207
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217
3218
3219
3220
3221
3222
3223
3224
3225
3226
3227
3228
3229
3230
3231
3232
3233
3234
3235
3236
3237
3238
3239
3240
3241
3242
3243
3244
3245
3246
3247
3248
3249
3250
3251
3252
3253
3254
3255
3256
3257
3258
3259
3260
3261
3262
3263
3264
3265
3266
3267
3268
3269
3270
3271
3272
3273
3274
3275
3276
3277
3278
3279
3280
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291
3292
3293
3294
3295
3296
3297
3298
3299
3300
3301
3302
3303
3304
3305
3306
3307
3308
3309
3310
3311
3312
3313
3314
3315
3316
3317
3318
3319
3320
3321
3322
3323
3324
3325
3326
3327
3328
3329
3330
3331
3332
3333
3334
3335
3336
3337
3338
3339
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350
3351
3352
3353
3354
3355
3356
3357
3358
3359
3360
3361
3362
3363
3364
3365
3366
3367
3368
3369
3370
3371
3372
3373
3374
3375
3376
3377
3378
3379
3380
3381
3382
3383
3384
3385
3386
3387
3388
3389
3390
3391
3392
3393
3394
3395
3396
3397
3398
3399
3400
3401
3402
3403
3404
3405
3406
3407
3408
3409
3410
3411
3412
3413
3414
3415
3416
3417
3418
3419
3420
3421
3422
3423
3424
3425
3426
3427
3428
3429
3430
3431
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442
3443
3444
3445
3446
3447
3448
3449
3450
3451
3452
3453
3454
3455
3456
3457
3458
3459
3460
3461
3462
// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
******************************************************************************
* Copyright (C) 1997-2016, International Business Machines Corporation and
* others. All Rights Reserved.
******************************************************************************
*
* File uresbund.cpp
*
* Modification History:
*
*   Date        Name        Description
*   04/01/97    aliu        Creation.
*   06/14/99    stephen     Removed functions taking a filename suffix.
*   07/20/99    stephen     Changed for UResourceBundle typedef'd to void*
*   11/09/99    weiv            Added ures_getLocale()
*   March 2000  weiv        Total overhaul - using data in DLLs
*   06/20/2000  helena      OS/400 port changes; mostly typecast.
*   06/24/02    weiv        Added support for resource sharing
******************************************************************************
*/

#include "unicode/ures.h"
#include "unicode/ustring.h"
#include "unicode/ucnv.h"
#include "charstr.h"
#include "uresimp.h"
#include "ustr_imp.h"
#include "cwchar.h"
#include "ucln_cmn.h"
#include "cmemory.h"
#include "cstring.h"
#include "mutex.h"
#include "uhash.h"
#include "unicode/uenum.h"
#include "uenumimp.h"
#include "ulocimp.h"
#include "umutex.h"
#include "putilimp.h"
#include "uassert.h"
#include "uresdata.h"

using namespace icu;

/*
Static cache for already opened resource bundles - mostly for keeping fallback info
TODO: This cache should probably be removed when the deprecated code is
      completely removed.
*/
static UHashtable *cache = nullptr;
static icu::UInitOnce gCacheInitOnce {};

static UMutex resbMutex;

/* INTERNAL: hashes an entry  */
static int32_t U_CALLCONV hashEntry(const UHashTok parm) {
    UResourceDataEntry *b = (UResourceDataEntry *)parm.pointer;
    UHashTok namekey, pathkey;
    namekey.pointer = b->fName;
    pathkey.pointer = b->fPath;
    return uhash_hashChars(namekey)+37u*uhash_hashChars(pathkey);
}

/* INTERNAL: compares two entries */
static UBool U_CALLCONV compareEntries(const UHashTok p1, const UHashTok p2) {
    UResourceDataEntry *b1 = (UResourceDataEntry *)p1.pointer;
    UResourceDataEntry *b2 = (UResourceDataEntry *)p2.pointer;
    UHashTok name1, name2, path1, path2;
    name1.pointer = b1->fName;
    name2.pointer = b2->fName;
    path1.pointer = b1->fPath;
    path2.pointer = b2->fPath;
    return (UBool)(uhash_compareChars(name1, name2) &&
        uhash_compareChars(path1, path2));
}


/**
 *  Internal function, gets parts of locale name according 
 *  to the position of '_' character
 */
static UBool chopLocale(char *name) {
    char *i = uprv_strrchr(name, '_');

    if(i != nullptr) {
        *i = '\0';
        return true;
    }

    return false;
}

static UBool hasVariant(const char* localeID) {
    UErrorCode err = U_ZERO_ERROR;
    int32_t variantLength = uloc_getVariant(localeID, nullptr, 0, &err);
    return variantLength != 0;
}

// This file contains the tables for doing locale fallback, which are generated
// by the CLDR-to-ICU process directly from the CLDR data.  This file should only
// ever be included from here.
#define INCLUDED_FROM_URESBUND_CPP
#include "localefallback_data.h"

static const char* performFallbackLookup(const char* key,
                                         const char* keyStrs,
                                         const char* valueStrs,
                                         const int32_t* lookupTable,
                                         int32_t lookupTableLength) {
    const int32_t* bottom = lookupTable;
    const int32_t* top = lookupTable + lookupTableLength;

    while (bottom < top) {
        // Effectively, divide by 2 and round down to an even index
        const int32_t* middle = bottom + (((top - bottom) / 4) * 2);
        const char* entryKey = &(keyStrs[*middle]);
        int32_t strcmpResult = uprv_strcmp(key, entryKey);
        if (strcmpResult == 0) {
            return &(valueStrs[middle[1]]);
        } else if (strcmpResult < 0) {
            top = middle;
        } else {
            bottom = middle + 2;
        }
    }
    return nullptr;
}

static CharString getDefaultScript(const CharString& language, const CharString& region) {
    const char* defaultScript = nullptr;
    UErrorCode err = U_ZERO_ERROR;
    
    // the default script will be "Latn" if we don't find the locale ID in the tables
    CharString result("Latn", err);
    
    // if we were passed both language and region, make them into a locale ID and look that up in the default
    // script table
    if (!region.isEmpty()) {
        CharString localeID;
        localeID.append(language, err).append("_", err).append(region, err);
        if (U_FAILURE(err)) {
            return result;
        }
        defaultScript = performFallbackLookup(localeID.data(), dsLocaleIDChars, scriptCodeChars, defaultScriptTable, UPRV_LENGTHOF(defaultScriptTable));
    }
    
    // if we didn't find anything, look up just the language in the default script table
    if (defaultScript == nullptr) {
        defaultScript = performFallbackLookup(language.data(), dsLocaleIDChars, scriptCodeChars, defaultScriptTable, UPRV_LENGTHOF(defaultScriptTable));
    }
    
    // if either lookup above succeeded, copy the result from "defaultScript" into "result"; otherwise, return "Latn"
    if (defaultScript != nullptr) {
        result.clear();
        result.append(defaultScript, err);
    }
    return result;
}

enum UResOpenType {
    /**
     * Open a resource bundle for the locale;
     * if there is not even a base language bundle, then fall back to the default locale;
     * if there is no bundle for that either, then load the root bundle.
     *
     * This is the default bundle loading behavior.
     */
    URES_OPEN_LOCALE_DEFAULT_ROOT,
    // TODO: ICU ticket #11271 "consistent default locale across locale trees"
    // Add an option to look at the main locale tree for whether to
    // fall back to root directly (if the locale has main data) or
    // fall back to the default locale first (if the locale does not even have main data).
    /**
     * Open a resource bundle for the locale;
     * if there is not even a base language bundle, then load the root bundle;
     * never fall back to the default locale.
     *
     * This is used for algorithms that have good pan-Unicode default behavior,
     * such as case mappings, collation, and segmentation (BreakIterator).
     */
    URES_OPEN_LOCALE_ROOT,
    /**
     * Open a resource bundle for the exact bundle name as requested;
     * no fallbacks, do not load parent bundles.
     *
     * This is used for supplemental (non-locale) data.
     */
    URES_OPEN_DIRECT
};
typedef enum UResOpenType UResOpenType;

/**
 *  Internal function, determines the search path for resource bundle files.
 *  Currently, this function is used only by findFirstExisting() to help search for resource bundle files when a bundle for the specified
 *  locale doesn't exist.  The code that supports inheritance of resources between existing resource bundle files continues to
 *  use chopLocale() below.
 *  @param name In-out parameter: On input, the locale ID to get a parent locale ID for (this is a locale's base name, without keywords); on output, the
 *  requested parent locale ID.
 *  @param origName The original locale ID the caller of findFirstExisting() requested.  This is the same as `name` on the first call to this function,
 *  but as findFirstExisting() ascends the resource bundle's parent tree, this parameter will continue to be the original locale ID requested.
 */
static bool getParentLocaleID(char *name, const char *origName, UResOpenType openType) {
    // early out if the locale ID has a variant code or ends with _
    size_t nameLen = uprv_strlen(name);
    if (!nameLen || name[nameLen - 1] == '_' || hasVariant(name)) {
        return chopLocale(name);
    }
    
    UErrorCode err = U_ZERO_ERROR;
    const char* tempNamePtr = name;
    CharString language = ulocimp_getLanguage(tempNamePtr, &tempNamePtr, err);
    if (*tempNamePtr == '_') {
        ++tempNamePtr;
    }
    CharString script = ulocimp_getScript(tempNamePtr, &tempNamePtr, err);
    if (*tempNamePtr == '_') {
        ++tempNamePtr;
    }
    CharString region = ulocimp_getCountry(tempNamePtr, &tempNamePtr, err);
    CharString workingLocale;
    if (U_FAILURE(err)) {
        // hopefully this never happens...
        return chopLocale(name);
    }
    
    // if the open type is URES_OPEN_LOCALE_DEFAULT_ROOT, first look the locale ID up in the parent locale table;
    // if that table specifies a parent for it, return that  (we don't do this for the other open types-- if we're not
    // falling back through the system default locale, we also want to do straight truncation fallback instead
    // of looking things up in the parent locale table-- see https://www.unicode.org/reports/tr35/tr35.html#Parent_Locales:
    // "Collation data, however, is an exception...")
    if (openType == URES_OPEN_LOCALE_DEFAULT_ROOT) {
        const char* parentID = performFallbackLookup(name, parentLocaleChars, parentLocaleChars, parentLocaleTable, UPRV_LENGTHOF(parentLocaleTable));
        if (parentID != nullptr) {
            uprv_strcpy(name, parentID);
            return true;
        }
    }

    // if it's not in the parent locale table, figure out the fallback script algorithmically
    // (see CLDR-15265 for an explanation of the algorithm)
    if (!script.isEmpty() && !region.isEmpty()) {
        // if "name" has both script and region, is the script the default script?
        // - if so, remove it and keep the region
        // - if not, remove the region and keep the script
        if (getDefaultScript(language, region) == script.toStringPiece()) {
            workingLocale.append(language, err).append("_", err).append(region, err);
        } else {
            workingLocale.append(language, err).append("_", err).append(script, err);
        }
    } else if (!region.isEmpty()) {
        // if "name" has region but not script, did the original locale ID specify a script?
        // - if yes, replace the region with the script from the original locale ID
        // - if no, replace the region with the default script for that language and region
        UErrorCode err = U_ZERO_ERROR;
        tempNamePtr = origName;
        CharString origNameLanguage = ulocimp_getLanguage(tempNamePtr, &tempNamePtr, err);
        if (*tempNamePtr == '_') {
            ++tempNamePtr;
        }
        CharString origNameScript = ulocimp_getScript(origName, nullptr, err);
        if (!origNameScript.isEmpty()) {
            workingLocale.append(language, err).append("_", err).append(origNameScript, err);
        } else {
            workingLocale.append(language, err).append("_", err).append(getDefaultScript(language, region), err);
        }
    } else if (!script.isEmpty()) {
        // if "name" has script but not region (and our open type if URES_OPEN_LOCALE_DEFAULT_ROOT), is the script
        // the default script for the language?
        // - if so, remove it from the locale ID
        // - if not, return false to continue up the chain
        // (we don't do this for other open types for the same reason we don't look things up in the parent
        // locale table for other open types-- see the reference to UTS #35 above)
        if (openType != URES_OPEN_LOCALE_DEFAULT_ROOT || getDefaultScript(language, CharString()) == script.toStringPiece()) {
            workingLocale.append(language, err);
        } else {
            return false;
        }
    } else {
        // if "name" just contains a language code, return false so the calling code falls back to "root"
        return false;
    }
    if (U_SUCCESS(err) && !workingLocale.isEmpty()) {
        uprv_strcpy(name, workingLocale.data());
        return true;
    } else {
        return false;
    }
}

/**
 *  Called to check whether a name without '_' needs to be checked for a parent.
 *  Some code had assumed that locale IDs with '_' could not have a non-root parent.
 *  We may want a better way of doing this.
 */
static UBool mayHaveParent(char *name) {
    return (name[0] != 0 && uprv_strstr("nb nn",name) != nullptr);
}

/**
 *  Internal function
 */
static void entryIncrease(UResourceDataEntry *entry) {
    Mutex lock(&resbMutex);
    entry->fCountExisting++;
    while(entry->fParent != nullptr) {
      entry = entry->fParent;
      entry->fCountExisting++;
    }
}

/**
 *  Internal function. Tries to find a resource in given Resource
 *  Bundle, as well as in its parents
 */
static UResourceDataEntry *getFallbackData(
        const UResourceBundle *resBundle,
        const char **resTag, Resource *res, UErrorCode *status) {
    UResourceDataEntry *dataEntry = resBundle->fData;
    int32_t indexR = -1;
    int32_t i = 0;
    *res = RES_BOGUS;
    if(dataEntry == nullptr) {
        *status = U_MISSING_RESOURCE_ERROR;
        return nullptr;
    }
    if(dataEntry->fBogus == U_ZERO_ERROR) { /* if this resource is real, */
        *res = res_getTableItemByKey(&(dataEntry->fData), dataEntry->fData.rootRes, &indexR, resTag); /* try to get data from there */
        i++;
    }
    if(resBundle->fHasFallback) {
        // Otherwise, we'll look in parents.
        while(*res == RES_BOGUS && dataEntry->fParent != nullptr) {
            dataEntry = dataEntry->fParent;
            if(dataEntry->fBogus == U_ZERO_ERROR) {
                i++;
                *res = res_getTableItemByKey(&(dataEntry->fData), dataEntry->fData.rootRes, &indexR, resTag);
            }
        }
    }

    if(*res == RES_BOGUS) {
        // If the resource is not found, we need to give an error.
        *status = U_MISSING_RESOURCE_ERROR;
        return nullptr;
    }
    // If the resource is found in parents, we need to adjust the error.
    if(i>1) {
        if(uprv_strcmp(dataEntry->fName, uloc_getDefault())==0 || uprv_strcmp(dataEntry->fName, kRootLocaleName)==0) {
            *status = U_USING_DEFAULT_WARNING;
        } else {
            *status = U_USING_FALLBACK_WARNING;
        }
    }
    return dataEntry;
}

static void
free_entry(UResourceDataEntry *entry) {
    UResourceDataEntry *alias;
    res_unload(&(entry->fData));
    if(entry->fName != nullptr && entry->fName != entry->fNameBuffer) {
        uprv_free(entry->fName);
    }
    if(entry->fPath != nullptr) {
        uprv_free(entry->fPath);
    }
    if(entry->fPool != nullptr) {
        --entry->fPool->fCountExisting;
    }
    alias = entry->fAlias;
    if(alias != nullptr) {
        while(alias->fAlias != nullptr) {
            alias = alias->fAlias;
        }
        --alias->fCountExisting;
    }
    uprv_free(entry);
}

/* Works just like ucnv_flushCache() */
static int32_t ures_flushCache()
{
    UResourceDataEntry *resB;
    int32_t pos;
    int32_t rbDeletedNum = 0;
    const UHashElement *e;
    UBool deletedMore;

    /*if shared data hasn't even been lazy evaluated yet
    * return 0
    */
    Mutex lock(&resbMutex);
    if (cache == nullptr) {
        return 0;
    }

    do {
        deletedMore = false;
        /*creates an enumeration to iterate through every element in the table */
        pos = UHASH_FIRST;
        while ((e = uhash_nextElement(cache, &pos)) != nullptr)
        {
            resB = (UResourceDataEntry *) e->value.pointer;
            /* Deletes only if reference counter == 0
             * Don't worry about the children of this node.
             * Those will eventually get deleted too, if not already.
             * Don't worry about the parents of this node.
             * Those will eventually get deleted too, if not already.
             */
            /* 04/05/2002 [weiv] fCountExisting should now be accurate. If it's not zero, that means that    */
            /* some resource bundles are still open somewhere. */

            if (resB->fCountExisting == 0) {
                rbDeletedNum++;
                deletedMore = true;
                uhash_removeElement(cache, e);
                free_entry(resB);
            }
        }
        /*
         * Do it again to catch bundles (aliases, pool bundle) whose fCountExisting
         * got decremented by free_entry().
         */
    } while(deletedMore);

    return rbDeletedNum;
}

#ifdef URES_DEBUG
#include <stdio.h>

U_CAPI UBool U_EXPORT2 ures_dumpCacheContents() {
  UBool cacheNotEmpty = false;
  int32_t pos = UHASH_FIRST;
  const UHashElement *e;
  UResourceDataEntry *resB;
  
    Mutex lock(&resbMutex);
    if (cache == nullptr) {
      fprintf(stderr,"%s:%d: RB Cache is nullptr.\n", __FILE__, __LINE__);
      return false;
    }

    while ((e = uhash_nextElement(cache, &pos)) != nullptr) {
      cacheNotEmpty=true;
      resB = (UResourceDataEntry *) e->value.pointer;
      fprintf(stderr,"%s:%d: RB Cache: Entry @0x%p, refcount %d, name %s:%s.  Pool 0x%p, alias 0x%p, parent 0x%p\n",
              __FILE__, __LINE__,
              (void*)resB, resB->fCountExisting,
              resB->fName?resB->fName:"nullptr",
              resB->fPath?resB->fPath:"nullptr",
              (void*)resB->fPool,
              (void*)resB->fAlias,
              (void*)resB->fParent);       
    }
    
    fprintf(stderr,"%s:%d: RB Cache still contains %d items.\n", __FILE__, __LINE__, uhash_count(cache));
    return cacheNotEmpty;
}

#endif

static UBool U_CALLCONV ures_cleanup()
{
    if (cache != nullptr) {
        ures_flushCache();
        uhash_close(cache);
        cache = nullptr;
    }
    gCacheInitOnce.reset();
    return true;
}

/** INTERNAL: Initializes the cache for resources */
static void U_CALLCONV createCache(UErrorCode &status) {
    U_ASSERT(cache == nullptr);
    cache = uhash_open(hashEntry, compareEntries, nullptr, &status);
    ucln_common_registerCleanup(UCLN_COMMON_URES, ures_cleanup);
}
     
static void initCache(UErrorCode *status) {
    umtx_initOnce(gCacheInitOnce, &createCache, *status);
}

/** INTERNAL: sets the name (locale) of the resource bundle to given name */

static void setEntryName(UResourceDataEntry *res, const char *name, UErrorCode *status) {
    int32_t len = (int32_t)uprv_strlen(name);
    if(res->fName != nullptr && res->fName != res->fNameBuffer) {
        uprv_free(res->fName);
    }
    if (len < (int32_t)sizeof(res->fNameBuffer)) {
        res->fName = res->fNameBuffer;
    }
    else {
        res->fName = (char *)uprv_malloc(len+1);
    }
    if(res->fName == nullptr) {
        *status = U_MEMORY_ALLOCATION_ERROR;
    } else {
        uprv_strcpy(res->fName, name);
    }
}

static UResourceDataEntry *
getPoolEntry(const char *path, UErrorCode *status);

/**
 *  INTERNAL: Inits and opens an entry from a data DLL.
 *    CAUTION:  resbMutex must be locked when calling this function.
 */
static UResourceDataEntry *init_entry(const char *localeID, const char *path, UErrorCode *status) {
    UResourceDataEntry *r = nullptr;
    UResourceDataEntry find;
    /*int32_t hashValue;*/
    const char *name;
    char aliasName[100] = { 0 };
    int32_t aliasLen = 0;
    /*UBool isAlias = false;*/
    /*UHashTok hashkey; */

    if(U_FAILURE(*status)) {
        return nullptr;
    }

    /* here we try to deduce the right locale name */
    if(localeID == nullptr) { /* if localeID is nullptr, we're trying to open default locale */
        name = uloc_getDefault();
    } else if(*localeID == 0) { /* if localeID is "" then we try to open root locale */
        name = kRootLocaleName;
    } else { /* otherwise, we'll open what we're given */
        name = localeID;
    }

    find.fName = (char *)name;
    find.fPath = (char *)path;

    /* calculate the hash value of the entry */
    /*hashkey.pointer = (void *)&find;*/
    /*hashValue = hashEntry(hashkey);*/

    /* check to see if we already have this entry */
    r = (UResourceDataEntry *)uhash_get(cache, &find);
    if(r == nullptr) {
        /* if the entry is not yet in the hash table, we'll try to construct a new one */
        r = (UResourceDataEntry *) uprv_malloc(sizeof(UResourceDataEntry));
        if(r == nullptr) {
            *status = U_MEMORY_ALLOCATION_ERROR;
            return nullptr;
        }

        uprv_memset(r, 0, sizeof(UResourceDataEntry));
        /*r->fHashKey = hashValue;*/

        setEntryName(r, name, status);
        if (U_FAILURE(*status)) {
            uprv_free(r);
            return nullptr;
        }

        if(path != nullptr) {
            r->fPath = (char *)uprv_strdup(path);
            if(r->fPath == nullptr) {
                *status = U_MEMORY_ALLOCATION_ERROR;
                uprv_free(r);
                return nullptr;
            }
        }

        /* this is the actual loading */
        res_load(&(r->fData), r->fPath, r->fName, status);

        if (U_FAILURE(*status)) {
            /* if we failed to load due to an out-of-memory error, exit early. */
            if (*status == U_MEMORY_ALLOCATION_ERROR) {
                uprv_free(r);
                return nullptr;
            }
            /* we have no such entry in dll, so it will always use fallback */
            *status = U_USING_FALLBACK_WARNING;
            r->fBogus = U_USING_FALLBACK_WARNING;
        } else { /* if we have a regular entry */
            Resource aliasres;
            if (r->fData.usesPoolBundle) {
                r->fPool = getPoolEntry(r->fPath, status);
                if (U_SUCCESS(*status)) {
                    const int32_t *poolIndexes = r->fPool->fData.pRoot + 1;
                    if(r->fData.pRoot[1 + URES_INDEX_POOL_CHECKSUM] == poolIndexes[URES_INDEX_POOL_CHECKSUM]) {
                        r->fData.poolBundleKeys = (const char *)(poolIndexes + (poolIndexes[URES_INDEX_LENGTH] & 0xff));
                        r->fData.poolBundleStrings = r->fPool->fData.p16BitUnits;
                    } else {
                        r->fBogus = *status = U_INVALID_FORMAT_ERROR;
                    }
                } else {
                    r->fBogus = *status;
                }
            }
            if (U_SUCCESS(*status)) {
                /* handle the alias by trying to get out the %%Alias tag.*/
                /* We'll try to get alias string from the bundle */
                aliasres = res_getResource(&(r->fData), "%%ALIAS");
                if (aliasres != RES_BOGUS) {
                    // No tracing: called during initial data loading
                    const char16_t *alias = res_getStringNoTrace(&(r->fData), aliasres, &aliasLen);
                    if(alias != nullptr && aliasLen > 0) { /* if there is actual alias - unload and load new data */
                        u_UCharsToChars(alias, aliasName, aliasLen+1);
                        r->fAlias = init_entry(aliasName, path, status);
                    }
                }
            }
        }

        {
            UResourceDataEntry *oldR = nullptr;
            if((oldR = (UResourceDataEntry *)uhash_get(cache, r)) == nullptr) { /* if the data is not cached */
                /* just insert it in the cache */
                UErrorCode cacheStatus = U_ZERO_ERROR;
                uhash_put(cache, (void *)r, r, &cacheStatus);
                if (U_FAILURE(cacheStatus)) {
                    *status = cacheStatus;
                    free_entry(r);
                    r = nullptr;
                }
            } else {
                /* somebody have already inserted it while we were working, discard newly opened data */
                /* Also, we could get here IF we opened an alias */
                free_entry(r);
                r = oldR;
            }
        }

    }
    if(r != nullptr) {
        /* return the real bundle */
        while(r->fAlias != nullptr) {
            r = r->fAlias;
        }
        r->fCountExisting++; /* we increase its reference count */
        /* if the resource has a warning */
        /* we don't want to overwrite a status with no error */
        if(r->fBogus != U_ZERO_ERROR && U_SUCCESS(*status)) {
             *status = r->fBogus; /* set the returning status */
        }
    }
    return r;
}

static UResourceDataEntry *
getPoolEntry(const char *path, UErrorCode *status) {
    UResourceDataEntry *poolBundle = init_entry(kPoolBundleName, path, status);
    if( U_SUCCESS(*status) &&
        (poolBundle == nullptr || poolBundle->fBogus != U_ZERO_ERROR || !poolBundle->fData.isPoolBundle)
    ) {
        *status = U_INVALID_FORMAT_ERROR;
    }
    return poolBundle;
}

/* INTERNAL: */
/*   CAUTION:  resbMutex must be locked when calling this function! */
static UResourceDataEntry *
findFirstExisting(const char* path, char* name, const char* defaultLocale, UResOpenType openType,
                  UBool *isRoot, UBool *foundParent, UBool *isDefault, UErrorCode* status) {
    UResourceDataEntry *r = nullptr;
    UBool hasRealData = false;
    *foundParent = true; /* we're starting with a fresh name */
    char origName[ULOC_FULLNAME_CAPACITY];

    uprv_strcpy(origName, name);
    while(*foundParent && !hasRealData) {
        r = init_entry(name, path, status);
        /* Null pointer test */
        if (U_FAILURE(*status)) {
            return nullptr;
        }
        *isDefault = (UBool)(uprv_strncmp(name, defaultLocale, uprv_strlen(name)) == 0);
        hasRealData = (UBool)(r->fBogus == U_ZERO_ERROR);
        if(!hasRealData) {
            /* this entry is not real. We will discard it. */
            /* However, the parent line for this entry is  */
            /* not to be used - as there might be parent   */
            /* lines in cache from previous openings that  */
            /* are not updated yet. */
            r->fCountExisting--;
            /*entryCloseInt(r);*/
            r = nullptr;
            *status = U_USING_FALLBACK_WARNING;
        } else {
            uprv_strcpy(name, r->fName); /* this is needed for supporting aliases */
        }

        *isRoot = (UBool)(uprv_strcmp(name, kRootLocaleName) == 0);

        /*Fallback data stuff*/
        if (!hasRealData) {
            *foundParent = getParentLocaleID(name, origName, openType);
        } else {
            // we've already found a real resource file; what we return to the caller is the parent
            // locale ID for inheritance, which should come from chopLocale(), not getParentLocaleID()
            *foundParent = chopLocale(name);
        }
        if (*foundParent && *name == '\0') {
            uprv_strcpy(name, "und");
        }
    }
    return r;
}

static void ures_setIsStackObject( UResourceBundle* resB, UBool state) {
    if(state) {
        resB->fMagic1 = 0;
        resB->fMagic2 = 0;
    } else {
        resB->fMagic1 = MAGIC1;
        resB->fMagic2 = MAGIC2;
    }
}

static UBool ures_isStackObject(const UResourceBundle* resB) {
  return((resB->fMagic1 == MAGIC1 && resB->fMagic2 == MAGIC2)?false:true);
}


U_CFUNC void ures_initStackObject(UResourceBundle* resB) {
  uprv_memset(resB, 0, sizeof(UResourceBundle));
  ures_setIsStackObject(resB, true);
}

U_NAMESPACE_BEGIN

StackUResourceBundle::StackUResourceBundle() {
    ures_initStackObject(&bundle);
}

StackUResourceBundle::~StackUResourceBundle() {
    ures_close(&bundle);
}

U_NAMESPACE_END

static UBool  // returns U_SUCCESS(*status)
loadParentsExceptRoot(UResourceDataEntry *&t1,
                      char name[], int32_t nameCapacity,
                      UBool usingUSRData, char usrDataPath[], UErrorCode *status) {
    if (U_FAILURE(*status)) { return false; }
    UBool checkParent = true;
    while (checkParent && t1->fParent == nullptr && !t1->fData.noFallback &&
            res_getResource(&t1->fData,"%%ParentIsRoot") == RES_BOGUS) {
        Resource parentRes = res_getResource(&t1->fData, "%%Parent");
        if (parentRes != RES_BOGUS) {  // An explicit parent was found.
            int32_t parentLocaleLen = 0;
            // No tracing: called during initial data loading
            const char16_t *parentLocaleName = res_getStringNoTrace(&(t1->fData), parentRes, &parentLocaleLen);
            if(parentLocaleName != nullptr && 0 < parentLocaleLen && parentLocaleLen < nameCapacity) {
                u_UCharsToChars(parentLocaleName, name, parentLocaleLen + 1);
                if (uprv_strcmp(name, kRootLocaleName) == 0) {
                    return true;
                }
            }
        }
        // Insert regular parents.
        UErrorCode parentStatus = U_ZERO_ERROR;
        UResourceDataEntry *t2 = init_entry(name, t1->fPath, &parentStatus);
        if (U_FAILURE(parentStatus)) {
            *status = parentStatus;
            return false;
        }
        UResourceDataEntry *u2 = nullptr;
        UErrorCode usrStatus = U_ZERO_ERROR;
        if (usingUSRData) {  // This code inserts user override data into the inheritance chain.
            u2 = init_entry(name, usrDataPath, &usrStatus);
            // If we failed due to out-of-memory, report that to the caller and exit early.
            if (usrStatus == U_MEMORY_ALLOCATION_ERROR) {
                *status = usrStatus;
                return false;
            }
        }

        if (usingUSRData && U_SUCCESS(usrStatus) && u2->fBogus == U_ZERO_ERROR) {
            t1->fParent = u2;
            u2->fParent = t2;
        } else {
            t1->fParent = t2;
            if (usingUSRData) {
                // The USR override data wasn't found, set it to be deleted.
                u2->fCountExisting = 0;
            }
        }
        t1 = t2;
        checkParent = chopLocale(name) || mayHaveParent(name);
    }
    return true;
}

static UBool  // returns U_SUCCESS(*status)
insertRootBundle(UResourceDataEntry *&t1, UErrorCode *status) {
    if (U_FAILURE(*status)) { return false; }
    UErrorCode parentStatus = U_ZERO_ERROR;
    UResourceDataEntry *t2 = init_entry(kRootLocaleName, t1->fPath, &parentStatus);
    if (U_FAILURE(parentStatus)) {
        *status = parentStatus;
        return false;
    }
    t1->fParent = t2;
    t1 = t2;
    return true;
}

static UResourceDataEntry *entryOpen(const char* path, const char* localeID,
                                     UResOpenType openType, UErrorCode* status) {
    U_ASSERT(openType != URES_OPEN_DIRECT);
    UErrorCode intStatus = U_ZERO_ERROR;
    UResourceDataEntry *r = nullptr;
    UResourceDataEntry *t1 = nullptr;
    UBool isDefault = false;
    UBool isRoot = false;
    UBool hasRealData = false;
    UBool hasChopped = true;
    UBool usingUSRData = U_USE_USRDATA && ( path == nullptr || uprv_strncmp(path,U_ICUDATA_NAME,8) == 0);

    char name[ULOC_FULLNAME_CAPACITY];
    char usrDataPath[96];

    initCache(status);

    if(U_FAILURE(*status)) {
        return nullptr;
    }

    uprv_strncpy(name, localeID, sizeof(name) - 1);
    name[sizeof(name) - 1] = 0;

    if ( usingUSRData ) {
        if ( path == nullptr ) {
            uprv_strcpy(usrDataPath, U_USRDATA_NAME);
        } else {
            uprv_strncpy(usrDataPath, path, sizeof(usrDataPath) - 1);
            usrDataPath[0] = 'u';
            usrDataPath[1] = 's';
            usrDataPath[2] = 'r';
            usrDataPath[sizeof(usrDataPath) - 1] = 0;
        }
    }
 
    // Note: We need to query the default locale *before* locking resbMutex.
    const char *defaultLocale = uloc_getDefault();

    Mutex lock(&resbMutex);    // Lock resbMutex until the end of this function.

    /* We're going to skip all the locales that do not have any data */
    r = findFirstExisting(path, name, defaultLocale, openType, &isRoot, &hasChopped, &isDefault, &intStatus);

    // If we failed due to out-of-memory, report the failure and exit early.
    if (intStatus == U_MEMORY_ALLOCATION_ERROR) {
        *status = intStatus;
        goto finish;
    }

    if(r != nullptr) { /* if there is one real locale, we can look for parents. */
        t1 = r;
        hasRealData = true;
        if ( usingUSRData ) {  /* This code inserts user override data into the inheritance chain */
            UErrorCode usrStatus = U_ZERO_ERROR;
            UResourceDataEntry *u1 = init_entry(t1->fName, usrDataPath, &usrStatus);
            // If we failed due to out-of-memory, report the failure and exit early.
            if (intStatus == U_MEMORY_ALLOCATION_ERROR) {
                *status = intStatus;
                goto finish;
            }
            if ( u1 != nullptr ) {
                if(u1->fBogus == U_ZERO_ERROR) {
                    u1->fParent = t1;
                    r = u1;
                } else {
                    /* the USR override data wasn't found, set it to be deleted */
                    u1->fCountExisting = 0;
                }
            }
        }
        if ((hasChopped || mayHaveParent(name)) && !isRoot) {
            if (!loadParentsExceptRoot(t1, name, UPRV_LENGTHOF(name), usingUSRData, usrDataPath, status)) {
                goto finish;
            }
        }
    }

    /* we could have reached this point without having any real data */
    /* if that is the case, we need to chain in the default locale   */
    if(r==nullptr && openType == URES_OPEN_LOCALE_DEFAULT_ROOT && !isDefault && !isRoot) {
        /* insert default locale */
        uprv_strcpy(name, defaultLocale);
        r = findFirstExisting(path, name, defaultLocale, openType, &isRoot, &hasChopped, &isDefault, &intStatus);
        // If we failed due to out-of-memory, report the failure and exit early.
        if (intStatus == U_MEMORY_ALLOCATION_ERROR) {
            *status = intStatus;
            goto finish;
        }
        intStatus = U_USING_DEFAULT_WARNING;
        if(r != nullptr) { /* the default locale exists */
            t1 = r;
            hasRealData = true;
            isDefault = true;
            // TODO: Why not if (usingUSRData) { ... } like in the non-default-locale code path?
            if ((hasChopped || mayHaveParent(name)) && !isRoot) {
                if (!loadParentsExceptRoot(t1, name, UPRV_LENGTHOF(name), usingUSRData, usrDataPath, status)) {
                    goto finish;
                }
            }
        }
    }

    /* we could still have r == nullptr at this point - maybe even default locale is not */
    /* present */
    if(r == nullptr) {
        uprv_strcpy(name, kRootLocaleName);
        r = findFirstExisting(path, name, defaultLocale, openType, &isRoot, &hasChopped, &isDefault, &intStatus);
        // If we failed due to out-of-memory, report the failure and exit early.
        if (intStatus == U_MEMORY_ALLOCATION_ERROR) {
            *status = intStatus;
            goto finish;
        }
        if(r != nullptr) {
            t1 = r;
            intStatus = U_USING_DEFAULT_WARNING;
            hasRealData = true;
        } else { /* we don't even have the root locale */
            *status = U_MISSING_RESOURCE_ERROR;
            goto finish;
        }
    } else if(!isRoot && uprv_strcmp(t1->fName, kRootLocaleName) != 0 &&
            t1->fParent == nullptr && !r->fData.noFallback) {
        if (!insertRootBundle(t1, status)) {
            goto finish;
        }
        if(!hasRealData) {
            r->fBogus = U_USING_DEFAULT_WARNING;
        }
    }

    // TODO: Does this ever loop?
    while(r != nullptr && !isRoot && t1->fParent != nullptr) {
        t1->fParent->fCountExisting++;
        t1 = t1->fParent;
    }

finish:
    if(U_SUCCESS(*status)) {
        if(intStatus != U_ZERO_ERROR) {
            *status = intStatus;  
        }
        return r;
    } else {
        return nullptr;
    }
}

/**
 * Version of entryOpen() and findFirstExisting() for ures_openDirect(),
 * with no fallbacks.
 * Parent and root locale bundles are loaded if
 * the requested bundle does not have the "nofallback" flag.
 */
static UResourceDataEntry *
entryOpenDirect(const char* path, const char* localeID, UErrorCode* status) {
    initCache(status);
    if(U_FAILURE(*status)) {
        return nullptr;
    }

    // Note: We need to query the default locale *before* locking resbMutex.
    // If the localeID is nullptr, then we want to use the default locale.
    if (localeID == nullptr) {
        localeID = uloc_getDefault();
    } else if (*localeID == 0) {
        // If the localeID is "", then we want to use the root locale.
        localeID = kRootLocaleName;
    }

    Mutex lock(&resbMutex);

    // findFirstExisting() without fallbacks.
    UResourceDataEntry *r = init_entry(localeID, path, status);
    if(U_SUCCESS(*status)) {
        if(r->fBogus != U_ZERO_ERROR) {
            r->fCountExisting--;
            r = nullptr;
        }
    } else {
        r = nullptr;
    }

    // Some code depends on the ures_openDirect() bundle to have a parent bundle chain,
    // unless it is marked with "nofallback".
    UResourceDataEntry *t1 = r;
    if(r != nullptr && uprv_strcmp(localeID, kRootLocaleName) != 0 &&  // not root
            r->fParent == nullptr && !r->fData.noFallback &&
            uprv_strlen(localeID) < ULOC_FULLNAME_CAPACITY) {
        char name[ULOC_FULLNAME_CAPACITY];
        uprv_strcpy(name, localeID);
        if(!chopLocale(name) || uprv_strcmp(name, kRootLocaleName) == 0 ||
                loadParentsExceptRoot(t1, name, UPRV_LENGTHOF(name), false, nullptr, status)) {
            if(uprv_strcmp(t1->fName, kRootLocaleName) != 0 && t1->fParent == nullptr) {
                insertRootBundle(t1, status);
            }
        }
        if(U_FAILURE(*status)) {
            r = nullptr;
        }
    }

    if(r != nullptr) {
        // TODO: Does this ever loop?
        while(t1->fParent != nullptr) {
            t1->fParent->fCountExisting++;
            t1 = t1->fParent;
        }
    }
    return r;
}

/**
 * Functions to create and destroy resource bundles.
 *     CAUTION:  resbMutex must be locked when calling this function.
 */
/* INTERNAL: */
static void entryCloseInt(UResourceDataEntry *resB) {
    UResourceDataEntry *p = resB;

    while(resB != nullptr) {
        p = resB->fParent;
        resB->fCountExisting--;

        /* Entries are left in the cache. TODO: add ures_flushCache() to force a flush
         of the cache. */
/*
        if(resB->fCountExisting <= 0) {
            uhash_remove(cache, resB);
            if(resB->fBogus == U_ZERO_ERROR) {
                res_unload(&(resB->fData));
            }
            if(resB->fName != nullptr) {
                uprv_free(resB->fName);
            }
            if(resB->fPath != nullptr) {
                uprv_free(resB->fPath);
            }
            uprv_free(resB);
        }
*/

        resB = p;
    }
}

/** 
 *  API: closes a resource bundle and cleans up.
 */

static void entryClose(UResourceDataEntry *resB) {
  Mutex lock(&resbMutex);
  entryCloseInt(resB);
}

/*
U_CFUNC void ures_setResPath(UResourceBundle *resB, const char* toAdd) {
  if(resB->fResPath == nullptr) {
    resB->fResPath = resB->fResBuf;
    *(resB->fResPath) = 0;
  } 
  resB->fResPathLen = uprv_strlen(toAdd);
  if(RES_BUFSIZE <= resB->fResPathLen+1) {
    if(resB->fResPath == resB->fResBuf) {
      resB->fResPath = (char *)uprv_malloc((resB->fResPathLen+1)*sizeof(char));
    } else {
      resB->fResPath = (char *)uprv_realloc(resB->fResPath, (resB->fResPathLen+1)*sizeof(char));
    }
  }
  uprv_strcpy(resB->fResPath, toAdd);
}
*/
static void ures_appendResPath(UResourceBundle *resB, const char* toAdd, int32_t lenToAdd, UErrorCode *status) {
    int32_t resPathLenOrig = resB->fResPathLen;
    if(resB->fResPath == nullptr) {
        resB->fResPath = resB->fResBuf;
        *(resB->fResPath) = 0;
        resB->fResPathLen = 0;
    } 
    resB->fResPathLen += lenToAdd;
    if(RES_BUFSIZE <= resB->fResPathLen+1) {
        if(resB->fResPath == resB->fResBuf) {
            resB->fResPath = (char *)uprv_malloc((resB->fResPathLen+1)*sizeof(char));
            /* Check that memory was allocated correctly. */
            if (resB->fResPath == nullptr) {
                *status = U_MEMORY_ALLOCATION_ERROR;
                return;
            }
            uprv_strcpy(resB->fResPath, resB->fResBuf);
        } else {
            char *temp = (char *)uprv_realloc(resB->fResPath, (resB->fResPathLen+1)*sizeof(char));
            /* Check that memory was reallocated correctly. */
            if (temp == nullptr) {
                *status = U_MEMORY_ALLOCATION_ERROR;
                return;
            }
            resB->fResPath = temp;
        }
    }
    uprv_strcpy(resB->fResPath + resPathLenOrig, toAdd);
}

static void ures_freeResPath(UResourceBundle *resB) {
    if (resB->fResPath && resB->fResPath != resB->fResBuf) {
        uprv_free(resB->fResPath);
    }
    resB->fResPath = nullptr;
    resB->fResPathLen = 0;
}

static void
ures_closeBundle(UResourceBundle* resB, UBool freeBundleObj)
{
    if(resB != nullptr) {
        if(resB->fData != nullptr) {
            entryClose(resB->fData);
        }
        if(resB->fVersion != nullptr) {
            uprv_free(resB->fVersion);
        }
        ures_freeResPath(resB);

        if(ures_isStackObject(resB) == false && freeBundleObj) {
            uprv_free(resB);
        }
#if 0 /*U_DEBUG*/
        else {
            /* poison the data */
            uprv_memset(resB, -1, sizeof(UResourceBundle));
        }
#endif
    }
}

U_CAPI void  U_EXPORT2
ures_close(UResourceBundle* resB)
{
    ures_closeBundle(resB, true);
}

namespace {

UResourceBundle *init_resb_result(
        UResourceDataEntry *dataEntry, Resource r, const char *key, int32_t idx,
        UResourceDataEntry *validLocaleDataEntry, const char *containerResPath,
        int32_t recursionDepth,
        UResourceBundle *resB, UErrorCode *status);

// TODO: Try to refactor further, so that we output a dataEntry + Resource + (optionally) resPath,
// rather than a UResourceBundle.
// May need to entryIncrease() the resulting dataEntry.
UResourceBundle *getAliasTargetAsResourceBundle(
        const ResourceData &resData, Resource r, const char *key, int32_t idx,
        UResourceDataEntry *validLocaleDataEntry, const char *containerResPath,
        int32_t recursionDepth,
        UResourceBundle *resB, UErrorCode *status) {
    // TODO: When an error occurs: Should we return nullptr vs. resB?
    if (U_FAILURE(*status)) { return resB; }
    U_ASSERT(RES_GET_TYPE(r) == URES_ALIAS);
    int32_t len = 0;
    const char16_t *alias = res_getAlias(&resData, r, &len);
    if(len <= 0) {
        // bad alias
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return resB;
    }

    // Copy the UTF-16 alias string into an invariant-character string.
    //
    // We do this so that res_findResource() can modify the path,
    // which allows us to remove redundant _res_findResource() variants
    // in uresdata.c.
    // res_findResource() now NUL-terminates each segment so that table keys
    // can always be compared with strcmp() instead of strncmp().
    // Saves code there and simplifies testing and code coverage.
    //
    // markus 2003oct17
    CharString chAlias;
    chAlias.appendInvariantChars(alias, len, *status);
    if (U_FAILURE(*status)) {
        return nullptr;
    }

    // We have an alias, now let's cut it up.
    const char *path = nullptr, *locale = nullptr, *keyPath = nullptr;
    if(chAlias[0] == RES_PATH_SEPARATOR) {
        // There is a path included.
        char *chAliasData = chAlias.data();
        char *sep = chAliasData + 1;
        path = sep;
        sep = uprv_strchr(sep, RES_PATH_SEPARATOR);
        if(sep != nullptr) {
            *sep++ = 0;
        }
        if(uprv_strcmp(path, "LOCALE") == 0) {
            // This is an XPath alias, starting with "/LOCALE/".
            // It contains the path to a resource which should be looked up
            // starting in the valid locale.
            // TODO: Can/should we forbid a /LOCALE alias without key path?
            //   It seems weird to alias to the same path, just starting from the valid locale.
            //   That will often yield an infinite loop.
            keyPath = sep;
            // Read from the valid locale which we already have.
            path = locale = nullptr;
        } else {
            if(uprv_strcmp(path, "ICUDATA") == 0) { /* want ICU data */
                path = nullptr;
            }
            if (sep == nullptr) {
                // TODO: This ends up using the root bundle. Can/should we forbid this?
                locale = "";
            } else {
                locale = sep;
                sep = uprv_strchr(sep, RES_PATH_SEPARATOR);
                if(sep != nullptr) {
                    *sep++ = 0;
                }
                keyPath = sep;
            }
        }
    } else {
        // No path, start with a locale.
        char *sep = chAlias.data();
        locale = sep;
        sep = uprv_strchr(sep, RES_PATH_SEPARATOR);
        if(sep != nullptr) {
            *sep++ = 0;
        }
        keyPath = sep;
        path = validLocaleDataEntry->fPath;
    }

    // Got almost everything, let's try to open.
    // First, open the bundle with real data.
    LocalUResourceBundlePointer mainRes;
    UResourceDataEntry *dataEntry;
    if (locale == nullptr) {
        // alias = /LOCALE/keyPath
        // Read from the valid locale which we already have.
        dataEntry = validLocaleDataEntry;
    } else {
        UErrorCode intStatus = U_ZERO_ERROR;
        // TODO: Shouldn't we use ures_open() for locale data bundles (!noFallback)?
        mainRes.adoptInstead(ures_openDirect(path, locale, &intStatus));
        if(U_FAILURE(intStatus)) {
            // We failed to open the resource bundle we're aliasing to.
            *status = intStatus;
            return resB;
        }
        dataEntry = mainRes->fData;
    }

    const char* temp = nullptr;
    if(keyPath == nullptr) {
        // No key path. This means that we are going to to use the corresponding resource from
        // another bundle.
        // TODO: Why the special code path?
        //   Why not put together a key path from containerResPath + key or idx,
        //   as a comment below suggests, and go into the regular code branch?
        // First, we are going to get a corresponding container
        // resource to the one we are searching.
        r = dataEntry->fData.rootRes;
        if(containerResPath) {
            chAlias.clear().append(containerResPath, *status);
            if (U_FAILURE(*status)) {
                return nullptr;
            }
            char *aKey = chAlias.data();
            // TODO: should res_findResource() return a new dataEntry, too?
            r = res_findResource(&dataEntry->fData, r, &aKey, &temp);
        }
        if(key) {
            // We need to make keyPath from the containerResPath and
            // current key, if there is a key associated.
            chAlias.clear().append(key, *status);
            if (U_FAILURE(*status)) {
                return nullptr;
            }
            char *aKey = chAlias.data();
            r = res_findResource(&dataEntry->fData, r, &aKey, &temp);
        } else if(idx != -1) {
            // If there is no key, but there is an index, try to get by the index.
            // Here we have either a table or an array, so get the element.
            int32_t type = RES_GET_TYPE(r);
            if(URES_IS_TABLE(type)) {
                const char *aKey;
                r = res_getTableItemByIndex(&dataEntry->fData, r, idx, &aKey);
            } else { /* array */
                r = res_getArrayItem(&dataEntry->fData, r, idx);
            }
        }
        if(r != RES_BOGUS) {
            resB = init_resb_result(
                dataEntry, r, temp, -1, validLocaleDataEntry, nullptr, recursionDepth+1,
                resB, status);
        } else {
            *status = U_MISSING_RESOURCE_ERROR;
        }
    } else {
        // This one is a bit trickier.
        // We start finding keys, but after we resolve one alias, the path might continue.
        // Consider:
        //     aliastest:alias { "testtypes/anotheralias/Sequence" }
        //     anotheralias:alias { "/ICUDATA/sh/CollationElements" }
        // aliastest resource should finally have the sequence, not collation elements.
        CharString pathBuf(keyPath, *status);
        if (U_FAILURE(*status)) {
            return nullptr;
        }
        char *myPath = pathBuf.data();
        containerResPath = nullptr;
        // Now we have fallback following here.
        for(;;) {
            r = dataEntry->fData.rootRes;
            // TODO: Move  containerResPath = nullptr  to here,
            // consistent with restarting from the rootRes of another bundle?!

            // This loop handles 'found' resources over several levels.
            while(*myPath && U_SUCCESS(*status)) {
                r = res_findResource(&(dataEntry->fData), r, &myPath, &temp);
                if(r == RES_BOGUS) {
                    // No resource found, we don't really want to look anymore on this level.
                    break;
                }
                // Found a resource, but it might be an indirection.
                resB = init_resb_result(
                    dataEntry, r, temp, -1,
                    validLocaleDataEntry, containerResPath, recursionDepth+1,
                    resB, status);
                if (U_FAILURE(*status)) {
                    break;
                }
                if (temp == nullptr || uprv_strcmp(keyPath, temp) != 0) {
                    // The call to init_resb_result() above will set resB->fKeyPath to be
                    // the same as resB->fKey,
                    // throwing away any additional path elements if we had them --
                    // if the key path wasn't just a single resource ID, clear out
                    // the bundle's key path and re-set it to be equal to keyPath.
                    ures_freeResPath(resB);
                    ures_appendResPath(resB, keyPath, (int32_t)uprv_strlen(keyPath), status);
                    if(resB->fResPath[resB->fResPathLen-1] != RES_PATH_SEPARATOR) {
                        ures_appendResPath(resB, RES_PATH_SEPARATOR_S, 1, status);
                    }
                    if (U_FAILURE(*status)) {
                        break;
                    }
                }
                r = resB->fRes; /* switch to a new resource, possibly a new tree */
                dataEntry = resB->fData;
                containerResPath = resB->fResPath;
            }
            if (U_FAILURE(*status) || r != RES_BOGUS) {
                break;
            }
            // Fall back to the parent bundle, if there is one.
            dataEntry = dataEntry->fParent;
            if (dataEntry == nullptr) {
                *status = U_MISSING_RESOURCE_ERROR;
                break;
            }
            // Copy the same keyPath again.
            myPath = pathBuf.data();
            uprv_strcpy(myPath, keyPath);
        }
    }
    if(mainRes.getAlias() == resB) {
        mainRes.orphan();
    }
    ResourceTracer(resB).maybeTrace("getalias");
    return resB;
}

// Recursive function, should be called only by itself, by its simpler wrapper,
// or by getAliasTargetAsResourceBundle().
UResourceBundle *init_resb_result(
        UResourceDataEntry *dataEntry, Resource r, const char *key, int32_t idx,
        UResourceDataEntry *validLocaleDataEntry, const char *containerResPath,
        int32_t recursionDepth,
        UResourceBundle *resB, UErrorCode *status) {
    // TODO: When an error occurs: Should we return nullptr vs. resB?
    if(status == nullptr || U_FAILURE(*status)) {
        return resB;
    }
    if (validLocaleDataEntry == nullptr) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return nullptr;
    }
    if(RES_GET_TYPE(r) == URES_ALIAS) {
        // This is an alias, need to exchange with real data.
        if(recursionDepth >= URES_MAX_ALIAS_LEVEL) {
            *status = U_TOO_MANY_ALIASES_ERROR;
            return resB;
        }
        return getAliasTargetAsResourceBundle(
            dataEntry->fData, r, key, idx,
            validLocaleDataEntry, containerResPath, recursionDepth, resB, status);
    }
    if(resB == nullptr) {
        resB = (UResourceBundle *)uprv_malloc(sizeof(UResourceBundle));
        if (resB == nullptr) {
            *status = U_MEMORY_ALLOCATION_ERROR;
            return nullptr;
        }
        ures_setIsStackObject(resB, false);
        resB->fResPath = nullptr;
        resB->fResPathLen = 0;
    } else {
        if(resB->fData != nullptr) {
            entryClose(resB->fData);
        }
        if(resB->fVersion != nullptr) {
            uprv_free(resB->fVersion);
        }
        /* 
        weiv: if stack object was passed in, it doesn't really need to be reinited,
        since the purpose of initing is to remove stack junk. However, at this point 
        we would not do anything to an allocated object, so stack object should be
        treated the same
        */
        /*
        if(ures_isStackObject(resB) != false) {
        ures_initStackObject(resB);
        }
        */
        if(containerResPath != resB->fResPath) {
            ures_freeResPath(resB);
        }
    }
    resB->fData = dataEntry;
    entryIncrease(resB->fData);
    resB->fHasFallback = false;
    resB->fIsTopLevel = false;
    resB->fIndex = -1;
    resB->fKey = key; 
    resB->fValidLocaleDataEntry = validLocaleDataEntry;
    if(containerResPath != resB->fResPath) {
        ures_appendResPath(
            resB, containerResPath, static_cast<int32_t>(uprv_strlen(containerResPath)), status);
    }
    if(key != nullptr) {
        ures_appendResPath(resB, key, (int32_t)uprv_strlen(key), status);
        if(resB->fResPath[resB->fResPathLen-1] != RES_PATH_SEPARATOR) {
            ures_appendResPath(resB, RES_PATH_SEPARATOR_S, 1, status);
        }
    } else if(idx >= 0) {
        char buf[256];
        int32_t len = T_CString_integerToString(buf, idx, 10);
        ures_appendResPath(resB, buf, len, status);
        if(resB->fResPath[resB->fResPathLen-1] != RES_PATH_SEPARATOR) {
            ures_appendResPath(resB, RES_PATH_SEPARATOR_S, 1, status);
        }
    }
    /* Make sure that Purify doesn't complain about uninitialized memory copies. */
    {
        int32_t usedLen = ((resB->fResBuf == resB->fResPath) ? resB->fResPathLen : 0);
        uprv_memset(resB->fResBuf + usedLen, 0, sizeof(resB->fResBuf) - usedLen);
    }

    resB->fVersion = nullptr;
    resB->fRes = r;
    resB->fSize = res_countArrayItems(&resB->getResData(), resB->fRes);
    ResourceTracer(resB).trace("get");
    return resB;
}

UResourceBundle *init_resb_result(
        UResourceDataEntry *dataEntry, Resource r, const char *key, int32_t idx,
        // validLocaleDataEntry + containerResPath
        const UResourceBundle *container,
        UResourceBundle *resB, UErrorCode *status) {
    return init_resb_result(
        dataEntry, r, key, idx,
        container->fValidLocaleDataEntry, container->fResPath, 0, resB, status);
}

}  // namespace

UResourceBundle *ures_copyResb(UResourceBundle *r, const UResourceBundle *original, UErrorCode *status) {
    UBool isStackObject;
    if(U_FAILURE(*status) || r == original) {
        return r;
    }
    if(original != nullptr) {
        if(r == nullptr) {
            isStackObject = false;
            r = (UResourceBundle *)uprv_malloc(sizeof(UResourceBundle));
            /* test for nullptr */
            if (r == nullptr) {
                *status = U_MEMORY_ALLOCATION_ERROR;
                return nullptr;
            }
        } else {
            isStackObject = ures_isStackObject(r);
            ures_closeBundle(r, false);
        }
        uprv_memcpy(r, original, sizeof(UResourceBundle));
        r->fResPath = nullptr;
        r->fResPathLen = 0;
        if(original->fResPath) {
            ures_appendResPath(r, original->fResPath, original->fResPathLen, status);
        }
        ures_setIsStackObject(r, isStackObject);
        if(r->fData != nullptr) {
            entryIncrease(r->fData);
        }
    }
    return r;
}

/**
 * Functions to retrieve data from resource bundles.
 */

U_CAPI const char16_t* U_EXPORT2 ures_getString(const UResourceBundle* resB, int32_t* len, UErrorCode* status) {
    const char16_t *s;
    if (status==nullptr || U_FAILURE(*status)) {
        return nullptr;
    }
    if(resB == nullptr) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return nullptr;
    }
    s = res_getString({resB}, &resB->getResData(), resB->fRes, len);
    if (s == nullptr) {
        *status = U_RESOURCE_TYPE_MISMATCH;
    }
    return s;
}

static const char *
ures_toUTF8String(const char16_t *s16, int32_t length16,
                  char *dest, int32_t *pLength,
                  UBool forceCopy,
                  UErrorCode *status) {
    int32_t capacity;

    if (U_FAILURE(*status)) {
        return nullptr;
    }
    if (pLength != nullptr) {
        capacity = *pLength;
    } else {
        capacity = 0;
    }
    if (capacity < 0 || (capacity > 0 && dest == nullptr)) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return nullptr;
    }

    if (length16 == 0) {
        /* empty string, return as read-only pointer */
        if (pLength != nullptr) {
            *pLength = 0;
        }
        if (forceCopy) {
            u_terminateChars(dest, capacity, 0, status);
            return dest;
        } else {
            return "";
        }
    } else {
        /* We need to transform the string to the destination buffer. */
        if (capacity < length16) {
            /* No chance for the string to fit. Pure preflighting. */
            return u_strToUTF8(nullptr, 0, pLength, s16, length16, status);
        }
        if (!forceCopy && (length16 <= 0x2aaaaaaa)) {
            /*
             * We know the string will fit into dest because each char16_t turns
             * into at most three UTF-8 bytes. Fill the latter part of dest
             * so that callers do not expect to use dest as a string pointer,
             * hopefully leading to more robust code for when resource bundles
             * may store UTF-8 natively.
             * (In which case dest would not be used at all.)
             *
             * We do not do this if forceCopy=true because then the caller
             * expects the string to start exactly at dest.
             *
             * The test above for <= 0x2aaaaaaa prevents overflows.
             * The +1 is for the NUL terminator.
             */
            int32_t maxLength = 3 * length16 + 1;
            if (capacity > maxLength) {
                dest += capacity - maxLength;
                capacity = maxLength;
            }
        }
        return u_strToUTF8(dest, capacity, pLength, s16, length16, status);
    }
}

U_CAPI const char * U_EXPORT2
ures_getUTF8String(const UResourceBundle *resB,
                   char *dest, int32_t *pLength,
                   UBool forceCopy,
                   UErrorCode *status) {
    int32_t length16;
    const char16_t *s16 = ures_getString(resB, &length16, status);
    return ures_toUTF8String(s16, length16, dest, pLength, forceCopy, status);
}

U_CAPI const uint8_t* U_EXPORT2 ures_getBinary(const UResourceBundle* resB, int32_t* len, 
                                               UErrorCode*               status) {
  const uint8_t *p;
  if (status==nullptr || U_FAILURE(*status)) {
    return nullptr;
  }
  if(resB == nullptr) {
    *status = U_ILLEGAL_ARGUMENT_ERROR;
    return nullptr;
  }
  p = res_getBinary({resB}, &resB->getResData(), resB->fRes, len);
  if (p == nullptr) {
    *status = U_RESOURCE_TYPE_MISMATCH;
  }
  return p;
}

U_CAPI const int32_t* U_EXPORT2 ures_getIntVector(const UResourceBundle* resB, int32_t* len, 
                                                   UErrorCode*               status) {
  const int32_t *p;
  if (status==nullptr || U_FAILURE(*status)) {
    return nullptr;
  }
  if(resB == nullptr) {
    *status = U_ILLEGAL_ARGUMENT_ERROR;
    return nullptr;
  }
  p = res_getIntVector({resB}, &resB->getResData(), resB->fRes, len);
  if (p == nullptr) {
    *status = U_RESOURCE_TYPE_MISMATCH;
  }
  return p;
}

/* this function returns a signed integer */ 
/* it performs sign extension */
U_CAPI int32_t U_EXPORT2 ures_getInt(const UResourceBundle* resB, UErrorCode *status) {
  if (status==nullptr || U_FAILURE(*status)) {
    return 0xffffffff;
  }
  if(resB == nullptr) {
    *status = U_ILLEGAL_ARGUMENT_ERROR;
    return 0xffffffff;
  }
  if(RES_GET_TYPE(resB->fRes) != URES_INT) {
    *status = U_RESOURCE_TYPE_MISMATCH;
    return 0xffffffff;
  }
  return res_getInt({resB}, resB->fRes);
}

U_CAPI uint32_t U_EXPORT2 ures_getUInt(const UResourceBundle* resB, UErrorCode *status) {
  if (status==nullptr || U_FAILURE(*status)) {
    return 0xffffffff;
  }
  if(resB == nullptr) {
    *status = U_ILLEGAL_ARGUMENT_ERROR;
    return 0xffffffff;
  }
  if(RES_GET_TYPE(resB->fRes) != URES_INT) {
    *status = U_RESOURCE_TYPE_MISMATCH;
    return 0xffffffff;
  }
  return res_getUInt({resB}, resB->fRes);
}

U_CAPI UResType U_EXPORT2 ures_getType(const UResourceBundle *resB) {
  if(resB == nullptr) {
    return URES_NONE;
  }
  return res_getPublicType(resB->fRes);
}

U_CAPI const char * U_EXPORT2 ures_getKey(const UResourceBundle *resB) {
  //
  // TODO: Trace ures_getKey? I guess not usually.
  //
  // We usually get the key string to decide whether we want the value, or to
  // make a key-value pair. Tracing the value should suffice.
  //
  // However, I believe we have some data (e.g., in res_index) where the key
  // strings are the data. Tracing the enclosing table should suffice.
  //
  if(resB == nullptr) {
    return nullptr;
  }
  return(resB->fKey);
}

U_CAPI int32_t U_EXPORT2 ures_getSize(const UResourceBundle *resB) {
  if(resB == nullptr) {
    return 0;
  }
  
  return resB->fSize;
}

static const char16_t* ures_getStringWithAlias(const UResourceBundle *resB, Resource r, int32_t sIndex, int32_t *len, UErrorCode *status) {
  if(RES_GET_TYPE(r) == URES_ALIAS) {
    const char16_t* result = 0;
    UResourceBundle *tempRes = ures_getByIndex(resB, sIndex, nullptr, status);
    result = ures_getString(tempRes, len, status);
    ures_close(tempRes);
    return result;
  } else {
    return res_getString({resB, sIndex}, &resB->getResData(), r, len); 
  }
}

U_CAPI void U_EXPORT2 ures_resetIterator(UResourceBundle *resB){
  if(resB == nullptr) {
    return;
  }
  resB->fIndex = -1;
}

U_CAPI UBool U_EXPORT2 ures_hasNext(const UResourceBundle *resB) {
  if(resB == nullptr) {
    return false;
  }
  return (UBool)(resB->fIndex < resB->fSize-1);
}

U_CAPI const char16_t* U_EXPORT2 ures_getNextString(UResourceBundle *resB, int32_t* len, const char ** key, UErrorCode *status) {
  Resource r = RES_BOGUS;
  
  if (status==nullptr || U_FAILURE(*status)) {
    return nullptr;
  }
  if(resB == nullptr) {
    *status = U_ILLEGAL_ARGUMENT_ERROR;
    return nullptr;
  }
  
  if(resB->fIndex == resB->fSize-1) {
    *status = U_INDEX_OUTOFBOUNDS_ERROR;
  } else {
    resB->fIndex++;
    switch(RES_GET_TYPE(resB->fRes)) {
    case URES_STRING:
    case URES_STRING_V2:
      return res_getString({resB}, &resB->getResData(), resB->fRes, len);
    case URES_TABLE:
    case URES_TABLE16:
    case URES_TABLE32:
      r = res_getTableItemByIndex(&resB->getResData(), resB->fRes, resB->fIndex, key);
      if(r == RES_BOGUS && resB->fHasFallback) {
        /* TODO: do the fallback */
      }
      return ures_getStringWithAlias(resB, r, resB->fIndex, len, status);
    case URES_ARRAY:
    case URES_ARRAY16:
      r = res_getArrayItem(&resB->getResData(), resB->fRes, resB->fIndex);
      if(r == RES_BOGUS && resB->fHasFallback) {
        /* TODO: do the fallback */
      }
      return ures_getStringWithAlias(resB, r, resB->fIndex, len, status);
    case URES_ALIAS:
      return ures_getStringWithAlias(resB, resB->fRes, resB->fIndex, len, status);
    case URES_INT:
    case URES_BINARY:
    case URES_INT_VECTOR:
        *status = U_RESOURCE_TYPE_MISMATCH;
        U_FALLTHROUGH;
    default:
      return nullptr;
    }
  }

  return nullptr;
}

U_CAPI UResourceBundle* U_EXPORT2 ures_getNextResource(UResourceBundle *resB, UResourceBundle *fillIn, UErrorCode *status) {
    const char *key = nullptr;
    Resource r = RES_BOGUS;

    if (status==nullptr || U_FAILURE(*status)) {
            /*return nullptr;*/
            return fillIn;
    }
    if(resB == nullptr) {
            *status = U_ILLEGAL_ARGUMENT_ERROR;
            /*return nullptr;*/
            return fillIn;
    }

    if(resB->fIndex == resB->fSize-1) {
      *status = U_INDEX_OUTOFBOUNDS_ERROR;
      /*return nullptr;*/
    } else {
        resB->fIndex++;
        switch(RES_GET_TYPE(resB->fRes)) {
        case URES_INT:
        case URES_BINARY:
        case URES_STRING:
        case URES_STRING_V2:
        case URES_INT_VECTOR:
            return ures_copyResb(fillIn, resB, status);
        case URES_TABLE:
        case URES_TABLE16:
        case URES_TABLE32:
            r = res_getTableItemByIndex(&resB->getResData(), resB->fRes, resB->fIndex, &key);
            if(r == RES_BOGUS && resB->fHasFallback) {
                /* TODO: do the fallback */
            }
            return init_resb_result(resB->fData, r, key, resB->fIndex, resB, fillIn, status);
        case URES_ARRAY:
        case URES_ARRAY16:
            r = res_getArrayItem(&resB->getResData(), resB->fRes, resB->fIndex);
            if(r == RES_BOGUS && resB->fHasFallback) {
                /* TODO: do the fallback */
            }
            return init_resb_result(resB->fData, r, key, resB->fIndex, resB, fillIn, status);
        default:
            /*return nullptr;*/
            return fillIn;
        }
    }
    /*return nullptr;*/
    return fillIn;
}

U_CAPI UResourceBundle* U_EXPORT2 ures_getByIndex(const UResourceBundle *resB, int32_t indexR, UResourceBundle *fillIn, UErrorCode *status) {
    const char* key = nullptr;
    Resource r = RES_BOGUS;

    if (status==nullptr || U_FAILURE(*status)) {
        /*return nullptr;*/
        return fillIn;
    }
    if(resB == nullptr) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        /*return nullptr;*/
        return fillIn;
    }

    if(indexR >= 0 && resB->fSize > indexR) {
        switch(RES_GET_TYPE(resB->fRes)) {
        case URES_INT:
        case URES_BINARY:
        case URES_STRING:
        case URES_STRING_V2:
        case URES_INT_VECTOR:
            return ures_copyResb(fillIn, resB, status);
        case URES_TABLE:
        case URES_TABLE16:
        case URES_TABLE32:
            r = res_getTableItemByIndex(&resB->getResData(), resB->fRes, indexR, &key);
            if(r == RES_BOGUS && resB->fHasFallback) {
                /* TODO: do the fallback */
            }
            return init_resb_result(resB->fData, r, key, indexR, resB, fillIn, status);
        case URES_ARRAY:
        case URES_ARRAY16:
            r = res_getArrayItem(&resB->getResData(), resB->fRes, indexR);
            if(r == RES_BOGUS && resB->fHasFallback) {
                /* TODO: do the fallback */
            }
            return init_resb_result(resB->fData, r, key, indexR, resB, fillIn, status);
        default:
            /*return nullptr;*/
            return fillIn;
        }
    } else {
        *status = U_MISSING_RESOURCE_ERROR;
    }
    /*return nullptr;*/
    return fillIn;
}

U_CAPI const char16_t* U_EXPORT2 ures_getStringByIndex(const UResourceBundle *resB, int32_t indexS, int32_t* len, UErrorCode *status) {
    const char* key = nullptr;
    Resource r = RES_BOGUS;

    if (status==nullptr || U_FAILURE(*status)) {
        return nullptr;
    }
    if(resB == nullptr) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return nullptr;
    }

    if(indexS >= 0 && resB->fSize > indexS) {
        switch(RES_GET_TYPE(resB->fRes)) {
        case URES_STRING:
        case URES_STRING_V2:
            return res_getString({resB}, &resB->getResData(), resB->fRes, len);
        case URES_TABLE:
        case URES_TABLE16:
        case URES_TABLE32:
            r = res_getTableItemByIndex(&resB->getResData(), resB->fRes, indexS, &key);
            if(r == RES_BOGUS && resB->fHasFallback) {
                /* TODO: do the fallback */
            }
            return ures_getStringWithAlias(resB, r, indexS, len, status);
        case URES_ARRAY:
        case URES_ARRAY16:
            r = res_getArrayItem(&resB->getResData(), resB->fRes, indexS);
            if(r == RES_BOGUS && resB->fHasFallback) {
                /* TODO: do the fallback */
            }
            return ures_getStringWithAlias(resB, r, indexS, len, status);
        case URES_ALIAS:
            return ures_getStringWithAlias(resB, resB->fRes, indexS, len, status);
        case URES_INT:
        case URES_BINARY:
        case URES_INT_VECTOR:
            *status = U_RESOURCE_TYPE_MISMATCH;
            break;
        default:
          /* must not occur */
          *status = U_INTERNAL_PROGRAM_ERROR;
          break;
        }
    } else {
        *status = U_MISSING_RESOURCE_ERROR;
    }
    return nullptr;
}

U_CAPI const char * U_EXPORT2
ures_getUTF8StringByIndex(const UResourceBundle *resB,
                          int32_t idx,
                          char *dest, int32_t *pLength,
                          UBool forceCopy,
                          UErrorCode *status) {
    int32_t length16;
    const char16_t *s16 = ures_getStringByIndex(resB, idx, &length16, status);
    return ures_toUTF8String(s16, length16, dest, pLength, forceCopy, status);
}

/*U_CAPI const char *ures_getResPath(UResourceBundle *resB) {
  return resB->fResPath;
}*/

U_CAPI UResourceBundle* U_EXPORT2
ures_findResource(const char* path, UResourceBundle *fillIn, UErrorCode *status) 
{
  UResourceBundle *first = nullptr; 
  UResourceBundle *result = fillIn;
  char *packageName = nullptr;
  char *pathToResource = nullptr, *save = nullptr;
  char *locale = nullptr, *localeEnd = nullptr;
  int32_t length;

  if(status == nullptr || U_FAILURE(*status)) {
    return result;
  }

  length = (int32_t)(uprv_strlen(path)+1);
  save = pathToResource = (char *)uprv_malloc(length*sizeof(char));
  /* test for nullptr */
  if(pathToResource == nullptr) {
    *status = U_MEMORY_ALLOCATION_ERROR;
    return result;
  }
  uprv_memcpy(pathToResource, path, length);

  locale = pathToResource;
  if(*pathToResource == RES_PATH_SEPARATOR) { /* there is a path specification */
    pathToResource++;
    packageName = pathToResource;
    pathToResource = uprv_strchr(pathToResource, RES_PATH_SEPARATOR);
    if(pathToResource == nullptr) {
      *status = U_ILLEGAL_ARGUMENT_ERROR;
    } else {
      *pathToResource = 0;
      locale = pathToResource+1;
    }
  }

  localeEnd = uprv_strchr(locale, RES_PATH_SEPARATOR);
  if(localeEnd != nullptr) {
    *localeEnd = 0;
  }

  first = ures_open(packageName, locale, status);

  if(U_SUCCESS(*status)) {
    if(localeEnd) {
      result = ures_findSubResource(first, localeEnd+1, fillIn, status);
    } else {
      result = ures_copyResb(fillIn, first, status);
    }
    ures_close(first);
  }
  uprv_free(save);
  return result;
}

U_CAPI UResourceBundle* U_EXPORT2
ures_findSubResource(const UResourceBundle *resB, char* path, UResourceBundle *fillIn, UErrorCode *status) 
{
  Resource res = RES_BOGUS;
  UResourceBundle *result = fillIn;
  const char *key;

  if(status == nullptr || U_FAILURE(*status)) {
    return result;
  }

  /* here we do looping and circular alias checking */
  /* this loop is here because aliasing is resolved on this level, not on res level */
  /* so, when we encounter an alias, it is not an aggregate resource, so we return */
  do {
    res = res_findResource(&resB->getResData(), resB->fRes, &path, &key); 
    if(res != RES_BOGUS) {
        result = init_resb_result(resB->fData, res, key, -1, resB, fillIn, status);
        resB = result;
    } else {
        *status = U_MISSING_RESOURCE_ERROR;
        break;
    }
  } while(*path); /* there is more stuff in the path */

  return result;
}
U_CAPI const char16_t* U_EXPORT2
ures_getStringByKeyWithFallback(const UResourceBundle *resB, 
                                const char* inKey, 
                                int32_t* len,
                                UErrorCode *status) {

    UResourceBundle stack;
    const char16_t* retVal = nullptr;
    ures_initStackObject(&stack);
    ures_getByKeyWithFallback(resB, inKey, &stack, status);
    int32_t length;
    retVal = ures_getString(&stack, &length, status);
    ures_close(&stack);
    if (U_FAILURE(*status)) {
        return nullptr;
    }
    if (length == 3 && retVal[0] == EMPTY_SET && retVal[1] == EMPTY_SET && retVal[2] == EMPTY_SET ) {
        retVal = nullptr;
        length = 0;
        *status = U_MISSING_RESOURCE_ERROR;
    }
    if (len != nullptr) {
        *len = length;
    }
    return retVal;
}

/*
  Like res_getTableItemByKey but accepts full paths like "NumberElements/latn/patternsShort".
*/  
static Resource getTableItemByKeyPath(const ResourceData *pResData, Resource table, const char *key) {
  Resource resource = table;  /* The current resource */
  icu::CharString path;
  UErrorCode errorCode = U_ZERO_ERROR;
  path.append(key, errorCode);
  if (U_FAILURE(errorCode)) { return RES_BOGUS; }
  char *pathPart = path.data();  /* Path from current resource to desired resource */
  UResType type = (UResType)RES_GET_TYPE(resource);  /* the current resource type */
  while (*pathPart && resource != RES_BOGUS && URES_IS_CONTAINER(type)) {
    char *nextPathPart = uprv_strchr(pathPart, RES_PATH_SEPARATOR);
    if (nextPathPart != nullptr) {
      *nextPathPart = 0;  /* Terminating null for this part of path. */
      nextPathPart++;
    } else {
      nextPathPart = uprv_strchr(pathPart, 0);
    }
    int32_t t;
    const char *pathP = pathPart;
    resource = res_getTableItemByKey(pResData, resource, &t, &pathP);
    type = (UResType)RES_GET_TYPE(resource);
    pathPart = nextPathPart; 
  }
  if (*pathPart) {
    return RES_BOGUS;
  }
  return resource;
}

static void createPath(const char* origResPath,
                       int32_t     origResPathLen,
                       const char* resPath,
                       int32_t     resPathLen,
                       const char* inKey,
                       CharString& path,
                       UErrorCode* status) {
    // This is a utility function used by ures_getByKeyWithFallback() below.  This function builds a path from
    // resPath and inKey, returning the result in `path`.  Originally, this function just cleared `path` and
    // appended resPath and inKey to it, but that caused problems for horizontal inheritance.
    //
    // In normal cases, resPath is the same as origResPath, but if ures_getByKeyWithFallback() has followed an
    // alias, resPath may be different from origResPath.  Not only may the existing path elements be different,
    // but resPath may also have MORE path elements than origResPath did.  If it does, those additional path
    // elements SUPERSEDE the corresponding elements of inKey.  So this code counts the number of elements in
    // resPath and origResPath and, for each path element in resPath that doesn't have a counterpart in origResPath,
    // deletes a path element from the beginning of inKey.  The remainder of inKey is then appended to
    // resPath to form the result.  (We're not using uprv_strchr() here because resPath and origResPath may
    // not be zero-terminated.)
    path.clear();
    const char* key = inKey;
    if (resPathLen > 0) {
        path.append(resPath, resPathLen, *status);
        if (U_SUCCESS(*status)) {
            const char* resPathLimit = resPath + resPathLen;
            const char* origResPathLimit = origResPath + origResPathLen;
            const char* resPathPtr = resPath;
            const char* origResPathPtr = origResPath;
            
            // Remove from the beginning of resPath the number of segments that are contained in origResPath.
            // If origResPath has MORE segments than resPath, this will leave resPath as the empty string.
            while (origResPathPtr < origResPathLimit && resPathPtr < resPathLimit) {
                while (origResPathPtr < origResPathLimit && *origResPathPtr != RES_PATH_SEPARATOR) {
                    ++origResPathPtr;
                }
                if (origResPathPtr < origResPathLimit && *origResPathPtr == RES_PATH_SEPARATOR) {
                    ++origResPathPtr;
                }
                while (resPathPtr < resPathLimit && *resPathPtr != RES_PATH_SEPARATOR) {
                    ++resPathPtr;
                }
                if (resPathPtr < resPathLimit && *resPathPtr == RES_PATH_SEPARATOR) {
                    ++resPathPtr;
                }
            }
            
            // New remove from the beginning of `key` the number of segments remaining in resPath.
            // If resPath has more segments than `key` does, `key` will end up empty.
            while (resPathPtr < resPathLimit && *key != '\0') {
                while (resPathPtr < resPathLimit && *resPathPtr != RES_PATH_SEPARATOR) {
                    ++resPathPtr;
                }
                if (resPathPtr < resPathLimit && *resPathPtr == RES_PATH_SEPARATOR) {
                    ++resPathPtr;
                }
                while (*key != '\0' && *key != RES_PATH_SEPARATOR) {
                    ++key;
                }
                if (*key == RES_PATH_SEPARATOR) {
                    ++key;
                }
            }
        }
        // Finally, append what's left of `key` to `path`.  What you end up with here is `resPath`, plus
        // any pieces of `key` that aren't superseded by `resPath`.
        // Or, to put it another way, calculate <#-segments-in-key> - (<#-segments-in-resPath> - <#-segments-in-origResPath>),
        // and append that many segments from the end of `key` to `resPath` to produce the result.
        path.append(key, *status);
    } else {
        path.append(inKey, *status);
    }
}

U_CAPI UResourceBundle* U_EXPORT2
ures_getByKeyWithFallback(const UResourceBundle *resB,
                          const char* inKey,
                          UResourceBundle *fillIn,
                          UErrorCode *status) {
    Resource res = RES_BOGUS, rootRes = RES_BOGUS;
    UResourceBundle *helper = nullptr;

    if (status==nullptr || U_FAILURE(*status)) {
        return fillIn;
    }
    if(resB == nullptr) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return fillIn;
    }

    int32_t type = RES_GET_TYPE(resB->fRes);
    if(URES_IS_TABLE(type)) {
        const char* origResPath = resB->fResPath;
        int32_t origResPathLen = resB->fResPathLen;
        res = getTableItemByKeyPath(&resB->getResData(), resB->fRes, inKey);
        const char* key = inKey;
        bool didRootOnce = false;
        if(res == RES_BOGUS) {
            UResourceDataEntry *dataEntry = resB->fData;
            CharString path;
            char *myPath = nullptr;
            const char* resPath = resB->fResPath;
            int32_t len = resB->fResPathLen;
            while(res == RES_BOGUS && (dataEntry->fParent != nullptr || !didRootOnce)) { /* Otherwise, we'll look in parents */
                if (dataEntry->fParent != nullptr) {
                    dataEntry = dataEntry->fParent;
                } else {
                    // We can't just stop when we get to a bundle whose fParent is nullptr.  That'll work most of the time,
                    // but if the bundle that the caller passed to us was "root" (which happens in getAllItemsWithFallback(),
                    // this function will drop right out without doing anything if "root" doesn't contain the exact key path
                    // specified.  In that case, we need one extra time through this loop to make sure we follow any
                    // applicable aliases at the root level.
                    didRootOnce = true;
                }
                rootRes = dataEntry->fData.rootRes;

                if(dataEntry->fBogus == U_ZERO_ERROR) {
                    createPath(origResPath, origResPathLen, resPath, len, inKey, path, status);
                    if (U_FAILURE(*status)) {
                        ures_close(helper);
                        return fillIn;
                    }
                    myPath = path.data();
                    key = inKey;
                    do {
                        res = res_findResource(&(dataEntry->fData), rootRes, &myPath, &key);
                        if (RES_GET_TYPE(res) == URES_ALIAS && *myPath) {
                            /* We hit an alias, but we didn't finish following the path. */
                            helper = init_resb_result(dataEntry, res, nullptr, -1, resB, helper, status);
                            /*helper = init_resb_result(dataEntry, res, inKey, -1, resB, helper, status);*/
                            if(helper) {
                              dataEntry = helper->fData;
                              rootRes = helper->fRes;
                              resPath = helper->fResPath;
                              len = helper->fResPathLen;

                            } else {
                              break;
                            }
                        } else if (res == RES_BOGUS) {
                            break;
                        }
                    } while(*myPath); /* Continue until the whole path is consumed */
                }
            }
            /*dataEntry = getFallbackData(resB, &key, &res, status);*/
            if(res != RES_BOGUS) {
              /* check if resB->fResPath gives the right name here */
                if(uprv_strcmp(dataEntry->fName, uloc_getDefault())==0 || uprv_strcmp(dataEntry->fName, kRootLocaleName)==0) {
                    *status = U_USING_DEFAULT_WARNING;
                } else {
                    *status = U_USING_FALLBACK_WARNING;
                }

                fillIn = init_resb_result(dataEntry, res, key, -1, resB, fillIn, status);
                if (resPath != nullptr) {
                    createPath(origResPath, origResPathLen, resPath, len, inKey, path, status);
                } else {
                    const char* separator = nullptr;
                    if (fillIn->fResPath != nullptr) {
                        separator = uprv_strchr(fillIn->fResPath, RES_PATH_SEPARATOR);
                    }
                    if (separator != nullptr && separator[1] != '\0') {
                        createPath(origResPath, origResPathLen, fillIn->fResPath,
                                   static_cast<int32_t>(uprv_strlen(fillIn->fResPath)), inKey, path, status);
                    } else {
                        createPath(origResPath, origResPathLen, "", 0, inKey, path, status);
                    }
                }
                ures_freeResPath(fillIn);
                ures_appendResPath(fillIn, path.data(), path.length(), status);
                if(fillIn->fResPath[fillIn->fResPathLen-1] != RES_PATH_SEPARATOR) {
                    ures_appendResPath(fillIn, RES_PATH_SEPARATOR_S, 1, status);
                }
            } else {
                *status = U_MISSING_RESOURCE_ERROR;
            }
        } else {
            fillIn = init_resb_result(resB->fData, res, key, -1, resB, fillIn, status);
        }
    } 
    else {
        *status = U_RESOURCE_TYPE_MISMATCH;
    }
    ures_close(helper);
    return fillIn;
}

namespace {

void getAllItemsWithFallback(
        const UResourceBundle *bundle, ResourceDataValue &value,
        ResourceSink &sink, UErrorCode &errorCode) {
    if (U_FAILURE(errorCode)) { return; }
    // We recursively enumerate child-first,
    // only storing parent items in the absence of child items.
    // The sink needs to store a placeholder value for the no-fallback/no-inheritance marker
    // to prevent a parent item from being stored.
    //
    // It would be possible to recursively enumerate parent-first,
    // overriding parent items with child items.
    // When the sink sees the no-fallback/no-inheritance marker,
    // then it would remove the parent's item.
    // We would deserialize parent values even though they are overridden in a child bundle.
    value.setData(bundle->getResData());
    value.setValidLocaleDataEntry(bundle->fValidLocaleDataEntry);
    UResourceDataEntry *parentEntry = bundle->fData->fParent;
    UBool hasParent = parentEntry != nullptr && U_SUCCESS(parentEntry->fBogus);
    value.setResource(bundle->fRes, ResourceTracer(bundle));
    sink.put(bundle->fKey, value, !hasParent, errorCode);
    if (hasParent) {
        // We might try to query the sink whether
        // any fallback from the parent bundle is still possible.

        // Turn the parent UResourceDataEntry into a UResourceBundle,
        // much like in ures_openWithType().
        // TODO: See if we can refactor ures_getByKeyWithFallback()
        // and pull out an inner function that takes and returns a UResourceDataEntry
        // so that we need not create UResourceBundle objects.
        StackUResourceBundle parentBundle;
        UResourceBundle &parentRef = parentBundle.ref();
        parentRef.fData = parentEntry;
        parentRef.fValidLocaleDataEntry = bundle->fValidLocaleDataEntry;
        parentRef.fHasFallback = !parentRef.getResData().noFallback;
        parentRef.fIsTopLevel = true;
        parentRef.fRes = parentRef.getResData().rootRes;
        parentRef.fSize = res_countArrayItems(&parentRef.getResData(), parentRef.fRes);
        parentRef.fIndex = -1;
        entryIncrease(parentEntry);

        // Look up the container item in the parent bundle.
        StackUResourceBundle containerBundle;
        const UResourceBundle *rb;
        UErrorCode pathErrorCode = U_ZERO_ERROR;  // Ignore if parents up to root do not have this path.
        if (bundle->fResPath == nullptr || *bundle->fResPath == 0) {
            rb = parentBundle.getAlias();
        } else {
            rb = ures_getByKeyWithFallback(parentBundle.getAlias(), bundle->fResPath,
                                           containerBundle.getAlias(), &pathErrorCode);
        }
        if (U_SUCCESS(pathErrorCode)) {
            getAllItemsWithFallback(rb, value, sink, errorCode);
        }
    }
}

struct GetAllChildrenSink : public ResourceSink {
    // Destination sink
    ResourceSink& dest;

    GetAllChildrenSink(ResourceSink& dest)
        : dest(dest) {}
    virtual ~GetAllChildrenSink() override;
    virtual void put(const char *key, ResourceValue &value, UBool isRoot,
           UErrorCode &errorCode) override {
        ResourceTable itemsTable = value.getTable(errorCode);
        if (U_FAILURE(errorCode)) { return; }
        for (int32_t i = 0; itemsTable.getKeyAndValue(i, key, value); ++i) {
            if (value.getType() == URES_ALIAS) {
                ResourceDataValue& rdv = static_cast<ResourceDataValue&>(value);
                StackUResourceBundle stackTempBundle;
                UResourceBundle* aliasRB = getAliasTargetAsResourceBundle(rdv.getData(), rdv.getResource(), nullptr, -1,
                                                                          rdv.getValidLocaleDataEntry(), nullptr, 0,
                                                                          stackTempBundle.getAlias(), &errorCode);
                if (U_SUCCESS(errorCode)) {
                    ResourceDataValue aliasedValue;
                    aliasedValue.setData(aliasRB->getResData());
                    aliasedValue.setValidLocaleDataEntry(aliasRB->fValidLocaleDataEntry);
                    aliasedValue.setResource(aliasRB->fRes, ResourceTracer(aliasRB));
                    dest.put(key, aliasedValue, isRoot, errorCode);
                }
            } else {
                dest.put(key, value, isRoot, errorCode);
            }
            if (U_FAILURE(errorCode)) { return; }
        }
    }
};

// Virtual destructors must be defined out of line.
GetAllChildrenSink::~GetAllChildrenSink() {}

U_CAPI void U_EXPORT2
ures_getAllChildrenWithFallback(const UResourceBundle *bundle, const char *path,
                                icu::ResourceSink &sink, UErrorCode &errorCode) {
    GetAllChildrenSink allChildrenSink(sink);
    ures_getAllItemsWithFallback(bundle, path, allChildrenSink, errorCode);
}

}  // namespace

// Requires a ResourceDataValue fill-in, so that we need not cast from a ResourceValue.
// Unfortunately, the caller must know which subclass to make and pass in.
// Alternatively, we could make it as polymorphic as in Java by
// returning a ResourceValue pointer (possibly wrapped into a LocalPointer)
// that the caller then owns.
//
// Also requires a UResourceBundle fill-in, so that the value's ResourceTracer
// can point to a non-local bundle.
// Without tracing, the child bundle could be a function-local object.
U_CAPI void U_EXPORT2
ures_getValueWithFallback(const UResourceBundle *bundle, const char *path,
                          UResourceBundle *tempFillIn,
                          ResourceDataValue &value, UErrorCode &errorCode) {
    if (U_FAILURE(errorCode)) { return; }
    if (path == nullptr) {
        errorCode = U_ILLEGAL_ARGUMENT_ERROR;
        return;
    }
    const UResourceBundle *rb;
    if (*path == 0) {
        // empty path
        rb = bundle;
    } else {
        rb = ures_getByKeyWithFallback(bundle, path, tempFillIn, &errorCode);
        if (U_FAILURE(errorCode)) {
            return;
        }
    }
    value.setData(rb->getResData());
    value.setValidLocaleDataEntry(rb->fValidLocaleDataEntry);
    value.setResource(rb->fRes, ResourceTracer(rb));
}

U_CAPI void U_EXPORT2
ures_getAllItemsWithFallback(const UResourceBundle *bundle, const char *path,
                             icu::ResourceSink &sink, UErrorCode &errorCode) {
    if (U_FAILURE(errorCode)) { return; }
    if (path == nullptr) {
        errorCode = U_ILLEGAL_ARGUMENT_ERROR;
        return;
    }
    StackUResourceBundle stackBundle;
    const UResourceBundle *rb;
    if (*path == 0) {
        // empty path
        rb = bundle;
    } else {
        rb = ures_getByKeyWithFallback(bundle, path, stackBundle.getAlias(), &errorCode);
        if (U_FAILURE(errorCode)) {
            return;
        }
    }
    // Get all table items with fallback.
    ResourceDataValue value;
    getAllItemsWithFallback(rb, value, sink, errorCode);
}

U_CAPI UResourceBundle* U_EXPORT2 ures_getByKey(const UResourceBundle *resB, const char* inKey, UResourceBundle *fillIn, UErrorCode *status) {
    Resource res = RES_BOGUS;
    UResourceDataEntry *dataEntry = nullptr;
    const char *key = inKey;

    if (status==nullptr || U_FAILURE(*status)) {
        return fillIn;
    }
    if(resB == nullptr) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return fillIn;
    }

    int32_t type = RES_GET_TYPE(resB->fRes);
    if(URES_IS_TABLE(type)) {
        int32_t t;
        res = res_getTableItemByKey(&resB->getResData(), resB->fRes, &t, &key);
        if(res == RES_BOGUS) {
            key = inKey;
            if(resB->fHasFallback) {
                dataEntry = getFallbackData(resB, &key, &res, status);
                if(U_SUCCESS(*status)) {
                    /* check if resB->fResPath gives the right name here */
                    return init_resb_result(dataEntry, res, key, -1, resB, fillIn, status);
                } else {
                    *status = U_MISSING_RESOURCE_ERROR;
                }
            } else {
                *status = U_MISSING_RESOURCE_ERROR;
            }
        } else {
            return init_resb_result(resB->fData, res, key, -1, resB, fillIn, status);
        }
    } 
#if 0
    /* this is a kind of TODO item. If we have an array with an index table, we could do this. */
    /* not currently */
    else if(RES_GET_TYPE(resB->fRes) == URES_ARRAY && resB->fHasFallback == true) {
        /* here should go a first attempt to locate the key using index table */
        dataEntry = getFallbackData(resB, &key, &res, status);
        if(U_SUCCESS(*status)) {
            return init_resb_result(dataEntry, res, key, resB, fillIn, status);
        } else {
            *status = U_MISSING_RESOURCE_ERROR;
        }
    }
#endif    
    else {
        *status = U_RESOURCE_TYPE_MISMATCH;
    }
    return fillIn;
}

U_CAPI const char16_t* U_EXPORT2 ures_getStringByKey(const UResourceBundle *resB, const char* inKey, int32_t* len, UErrorCode *status) {
    Resource res = RES_BOGUS;
    UResourceDataEntry *dataEntry = nullptr;
    const char* key = inKey;

    if (status==nullptr || U_FAILURE(*status)) {
        return nullptr;
    }
    if(resB == nullptr) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return nullptr;
    }

    int32_t type = RES_GET_TYPE(resB->fRes);
    if(URES_IS_TABLE(type)) {
        int32_t t=0;

        res = res_getTableItemByKey(&resB->getResData(), resB->fRes, &t, &key);

        if(res == RES_BOGUS) {
            key = inKey;
            if(resB->fHasFallback) {
                dataEntry = getFallbackData(resB, &key, &res, status);
                if(U_SUCCESS(*status)) {
                    switch (RES_GET_TYPE(res)) {
                    case URES_STRING:
                    case URES_STRING_V2:
                        return res_getString({resB, key}, &dataEntry->fData, res, len);
                    case URES_ALIAS:
                      {
                        const char16_t* result = 0;
                        UResourceBundle *tempRes = ures_getByKey(resB, inKey, nullptr, status);
                        result = ures_getString(tempRes, len, status);
                        ures_close(tempRes);
                        return result;
                      }
                    default:
                        *status = U_RESOURCE_TYPE_MISMATCH;
                    }
                } else {
                    *status = U_MISSING_RESOURCE_ERROR;
                }
            } else {
                *status = U_MISSING_RESOURCE_ERROR;
            }
        } else {
            switch (RES_GET_TYPE(res)) {
            case URES_STRING:
            case URES_STRING_V2:
                return res_getString({resB, key}, &resB->getResData(), res, len);
            case URES_ALIAS:
              {
                const char16_t* result = 0;
                UResourceBundle *tempRes = ures_getByKey(resB, inKey, nullptr, status);
                result = ures_getString(tempRes, len, status);
                ures_close(tempRes);
                return result;
              }
            default:
                *status = U_RESOURCE_TYPE_MISMATCH;
            }
        }
    } 
#if 0 
    /* this is a kind of TODO item. If we have an array with an index table, we could do this. */
    /* not currently */   
    else if(RES_GET_TYPE(resB->fRes) == URES_ARRAY && resB->fHasFallback == true) {
        /* here should go a first attempt to locate the key using index table */
        dataEntry = getFallbackData(resB, &key, &res, status);
        if(U_SUCCESS(*status)) {
            // TODO: Tracing
            return res_getString(rd, res, len);
        } else {
            *status = U_MISSING_RESOURCE_ERROR;
        }
    } 
#endif    
    else {
        *status = U_RESOURCE_TYPE_MISMATCH;
    }
    return nullptr;
}

U_CAPI const char * U_EXPORT2
ures_getUTF8StringByKey(const UResourceBundle *resB,
                        const char *key,
                        char *dest, int32_t *pLength,
                        UBool forceCopy,
                        UErrorCode *status) {
    int32_t length16;
    const char16_t *s16 = ures_getStringByKey(resB, key, &length16, status);
    return ures_toUTF8String(s16, length16, dest, pLength, forceCopy, status);
}

/* TODO: clean from here down */

/**
 *  INTERNAL: Get the name of the first real locale (not placeholder) 
 *  that has resource bundle data.
 */
U_CAPI const char*  U_EXPORT2
ures_getLocaleInternal(const UResourceBundle* resourceBundle, UErrorCode* status)
{
    if (status==nullptr || U_FAILURE(*status)) {
        return nullptr;
    }
    if (!resourceBundle) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return nullptr;
    } else {
      return resourceBundle->fData->fName;
    }
}

U_CAPI const char* U_EXPORT2 
ures_getLocale(const UResourceBundle* resourceBundle, 
               UErrorCode* status)
{
  return ures_getLocaleInternal(resourceBundle, status);
}


U_CAPI const char* U_EXPORT2 
ures_getLocaleByType(const UResourceBundle* resourceBundle, 
                     ULocDataLocaleType type, 
                     UErrorCode* status) {
    if (status==nullptr || U_FAILURE(*status)) {
        return nullptr;
    }
    if (!resourceBundle) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return nullptr;
    } else {
        switch(type) {
        case ULOC_ACTUAL_LOCALE:
            return resourceBundle->fData->fName;
        case ULOC_VALID_LOCALE:
            return resourceBundle->fValidLocaleDataEntry->fName;
        case ULOC_REQUESTED_LOCALE:
        default:
            *status = U_ILLEGAL_ARGUMENT_ERROR;
            return nullptr;
        }
    }
}

U_CFUNC const char* ures_getName(const UResourceBundle* resB) {
  if(resB == nullptr) {
    return nullptr;
  }

  return resB->fData->fName;
}

#ifdef URES_DEBUG
U_CFUNC const char* ures_getPath(const UResourceBundle* resB) {
  if(resB == nullptr) {
    return nullptr;
  }

  return resB->fData->fPath;
}
#endif

static UResourceBundle*
ures_openWithType(UResourceBundle *r, const char* path, const char* localeID,
                  UResOpenType openType, UErrorCode* status) {
    if(U_FAILURE(*status)) {
        return nullptr;
    }

    UResourceDataEntry *entry;
    if(openType != URES_OPEN_DIRECT) {
        /* first "canonicalize" the locale ID */
        char canonLocaleID[ULOC_FULLNAME_CAPACITY];
        uloc_getBaseName(localeID, canonLocaleID, UPRV_LENGTHOF(canonLocaleID), status);
        if(U_FAILURE(*status) || *status == U_STRING_NOT_TERMINATED_WARNING) {
            *status = U_ILLEGAL_ARGUMENT_ERROR;
            return nullptr;
        }
        entry = entryOpen(path, canonLocaleID, openType, status);
    } else {
        entry = entryOpenDirect(path, localeID, status);
    }
    if(U_FAILURE(*status)) {
        return nullptr;
    }
    if(entry == nullptr) {
        *status = U_MISSING_RESOURCE_ERROR;
        return nullptr;
    }

    UBool isStackObject;
    if(r == nullptr) {
        r = (UResourceBundle *)uprv_malloc(sizeof(UResourceBundle));
        if(r == nullptr) {
            entryClose(entry);
            *status = U_MEMORY_ALLOCATION_ERROR;
            return nullptr;
        }
        isStackObject = false;
    } else {  // fill-in
        isStackObject = ures_isStackObject(r);
        ures_closeBundle(r, false);
    }
    uprv_memset(r, 0, sizeof(UResourceBundle));
    ures_setIsStackObject(r, isStackObject);

    r->fValidLocaleDataEntry = r->fData = entry;
    r->fHasFallback = openType != URES_OPEN_DIRECT && !r->getResData().noFallback;
    r->fIsTopLevel = true;
    r->fRes = r->getResData().rootRes;
    r->fSize = res_countArrayItems(&r->getResData(), r->fRes);
    r->fIndex = -1;

    ResourceTracer(r).traceOpen();

    return r;
}

U_CAPI UResourceBundle* U_EXPORT2
ures_open(const char* path, const char* localeID, UErrorCode* status) {
    return ures_openWithType(nullptr, path, localeID, URES_OPEN_LOCALE_DEFAULT_ROOT, status);
}

U_CAPI UResourceBundle* U_EXPORT2
ures_openNoDefault(const char* path, const char* localeID, UErrorCode* status) {
    return ures_openWithType(nullptr, path, localeID, URES_OPEN_LOCALE_ROOT, status);
}

/**
 *  Opens a resource bundle without "canonicalizing" the locale name. No fallback will be performed 
 *  or sought. However, alias substitution will happen!
 */
U_CAPI UResourceBundle*  U_EXPORT2
ures_openDirect(const char* path, const char* localeID, UErrorCode* status) {
    return ures_openWithType(nullptr, path, localeID, URES_OPEN_DIRECT, status);
}

/**
 *  Internal API: This function is used to open a resource bundle 
 *  proper fallback chaining is executed while initialization. 
 *  The result is stored in cache for later fallback search.
 * 
 * Same as ures_open(), but uses the fill-in parameter and does not allocate a new bundle.
 */
U_CAPI void U_EXPORT2
ures_openFillIn(UResourceBundle *r, const char* path,
                const char* localeID, UErrorCode* status) {
    if(U_SUCCESS(*status) && r == nullptr) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return;
    }
    ures_openWithType(r, path, localeID, URES_OPEN_LOCALE_DEFAULT_ROOT, status);
}

/**
 * Same as ures_openDirect(), but uses the fill-in parameter and does not allocate a new bundle.
 */
U_CAPI void U_EXPORT2
ures_openDirectFillIn(UResourceBundle *r, const char* path, const char* localeID, UErrorCode* status) {
    if(U_SUCCESS(*status) && r == nullptr) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return;
    }
    ures_openWithType(r, path, localeID, URES_OPEN_DIRECT, status);
}

/**
 *  API: Counts members. For arrays and tables, returns number of resources.
 *  For strings, returns 1.
 */
U_CAPI int32_t  U_EXPORT2
ures_countArrayItems(const UResourceBundle* resourceBundle,
                  const char* resourceKey,
                  UErrorCode* status)
{
    UResourceBundle resData;
    ures_initStackObject(&resData);
    if (status==nullptr || U_FAILURE(*status)) {
        return 0;
    }
    if(resourceBundle == nullptr) {
        *status = U_ILLEGAL_ARGUMENT_ERROR;
        return 0;
    }
    ures_getByKey(resourceBundle, resourceKey, &resData, status);
    
    if(resData.getResData().data != nullptr) {
        int32_t result = res_countArrayItems(&resData.getResData(), resData.fRes);
        ures_close(&resData);
        return result;
    } else {
        *status = U_MISSING_RESOURCE_ERROR;
        ures_close(&resData);
        return 0;
    }
}

/**
 * Internal function.
 * Return the version number associated with this ResourceBundle as a string.
 *
 * @param resourceBundle The resource bundle for which the version is checked.
 * @return  A version number string as specified in the resource bundle or its parent.
 *          The caller does not own this string.
 * @see ures_getVersion
 * @internal
 */
U_CAPI const char* U_EXPORT2 
ures_getVersionNumberInternal(const UResourceBundle *resourceBundle)
{
    if (!resourceBundle) return nullptr;

    if(resourceBundle->fVersion == nullptr) {

        /* If the version ID has not been built yet, then do so.  Retrieve */
        /* the minor version from the file. */
        UErrorCode status = U_ZERO_ERROR;
        int32_t minor_len = 0;
        int32_t len;

        const char16_t* minor_version = ures_getStringByKey(resourceBundle, kVersionTag, &minor_len, &status);
        
        /* Determine the length of of the final version string.  This is */
        /* the length of the major part + the length of the separator */
        /* (==1) + the length of the minor part (+ 1 for the zero byte at */
        /* the end). */

        len = (minor_len > 0) ? minor_len : 1;
    
        /* Allocate the string, and build it up. */
        /* + 1 for zero byte */


        ((UResourceBundle *)resourceBundle)->fVersion = (char *)uprv_malloc(1 + len); 
        /* Check for null pointer. */
        if (((UResourceBundle *)resourceBundle)->fVersion == nullptr) {
            return nullptr;
        }
       
        if(minor_len > 0) {
            u_UCharsToChars(minor_version, resourceBundle->fVersion , minor_len);
            resourceBundle->fVersion[len] =  '\0';
        }
        else {
            uprv_strcpy(resourceBundle->fVersion, kDefaultMinorVersion);
        }
    }

    return resourceBundle->fVersion;
}

U_CAPI const char*  U_EXPORT2
ures_getVersionNumber(const UResourceBundle*   resourceBundle)
{
    return ures_getVersionNumberInternal(resourceBundle);
}

U_CAPI void U_EXPORT2 ures_getVersion(const UResourceBundle* resB, UVersionInfo versionInfo) {
    if (!resB) return;

    u_versionFromString(versionInfo, ures_getVersionNumberInternal(resB));
}

/** Tree support functions *******************************/
#define INDEX_LOCALE_NAME "res_index"
#define INDEX_TAG         "InstalledLocales"
#define DEFAULT_TAG       "default"

#if defined(URES_TREE_DEBUG)
#include <stdio.h>
#endif

typedef struct ULocalesContext {
    UResourceBundle installed;
    UResourceBundle curr;
} ULocalesContext;

static void U_CALLCONV
ures_loc_closeLocales(UEnumeration *enumerator) {
    ULocalesContext *ctx = (ULocalesContext *)enumerator->context;
    ures_close(&ctx->curr);
    ures_close(&ctx->installed);
    uprv_free(ctx);
    uprv_free(enumerator);
}

static int32_t U_CALLCONV
ures_loc_countLocales(UEnumeration *en, UErrorCode * /*status*/) {
    ULocalesContext *ctx = (ULocalesContext *)en->context;
    return ures_getSize(&ctx->installed);
}

U_CDECL_BEGIN


static const char * U_CALLCONV
ures_loc_nextLocale(UEnumeration* en,
                    int32_t* resultLength,
                    UErrorCode* status) {
    ULocalesContext *ctx = (ULocalesContext *)en->context;
    UResourceBundle *res = &(ctx->installed);
    UResourceBundle *k = nullptr;
    const char *result = nullptr;
    int32_t len = 0;
    if(ures_hasNext(res) && (k = ures_getNextResource(res, &ctx->curr, status)) != 0) {
        result = ures_getKey(k);
        len = (int32_t)uprv_strlen(result);
    }
    if (resultLength) {
        *resultLength = len;
    }
    return result;
}

static void U_CALLCONV 
ures_loc_resetLocales(UEnumeration* en, 
                      UErrorCode* /*status*/) {
    UResourceBundle *res = &((ULocalesContext *)en->context)->installed;
    ures_resetIterator(res);
}

U_CDECL_END

static const UEnumeration gLocalesEnum = {
    nullptr,
        nullptr,
        ures_loc_closeLocales,
        ures_loc_countLocales,
        uenum_unextDefault,
        ures_loc_nextLocale,
        ures_loc_resetLocales
};


U_CAPI UEnumeration* U_EXPORT2
ures_openAvailableLocales(const char *path, UErrorCode *status)
{
    UResourceBundle *idx = nullptr;
    UEnumeration *en = nullptr;
    ULocalesContext *myContext = nullptr;

    if(U_FAILURE(*status)) {
        return nullptr;
    }
    myContext = static_cast<ULocalesContext *>(uprv_malloc(sizeof(ULocalesContext)));
    en =  (UEnumeration *)uprv_malloc(sizeof(UEnumeration));
    if(!en || !myContext) {
        *status = U_MEMORY_ALLOCATION_ERROR;
        uprv_free(en);
        uprv_free(myContext);
        return nullptr;
    }
    uprv_memcpy(en, &gLocalesEnum, sizeof(UEnumeration));

    ures_initStackObject(&myContext->installed);
    ures_initStackObject(&myContext->curr);
    idx = ures_openDirect(path, INDEX_LOCALE_NAME, status);
    ures_getByKey(idx, INDEX_TAG, &myContext->installed, status);
    if(U_SUCCESS(*status)) {
#if defined(URES_TREE_DEBUG)
        fprintf(stderr, "Got %s::%s::[%s] : %s\n", 
            path, INDEX_LOCALE_NAME, INDEX_TAG, ures_getKey(&myContext->installed));
#endif
        en->context = myContext;
    } else {
#if defined(URES_TREE_DEBUG)
        fprintf(stderr, "%s open failed - %s\n", path, u_errorName(*status));
#endif
        ures_close(&myContext->installed);
        uprv_free(myContext);
        uprv_free(en);
        en = nullptr;
    }
    
    ures_close(idx);
    
    return en;
}

static UBool isLocaleInList(UEnumeration *locEnum, const char *locToSearch, UErrorCode *status) {
    const char *loc;
    while ((loc = uenum_next(locEnum, nullptr, status)) != nullptr) {
        if (uprv_strcmp(loc, locToSearch) == 0) {
            return true;
        }
    }
    return false;
}

U_CAPI int32_t U_EXPORT2
ures_getFunctionalEquivalent(char *result, int32_t resultCapacity,
                             const char *path, const char *resName, const char *keyword, const char *locid,
                             UBool *isAvailable, UBool omitDefault, UErrorCode *status)
{
    char kwVal[1024] = ""; /* value of keyword 'keyword' */
    char defVal[1024] = ""; /* default value for given locale */
    char defLoc[1024] = ""; /* default value for given locale */
    char base[1024] = ""; /* base locale */
    char found[1024] = "";
    char parent[1024] = "";
    char full[1024] = "";
    UResourceBundle bund1, bund2;
    UResourceBundle *res = nullptr;
    UErrorCode subStatus = U_ZERO_ERROR;
    int32_t length = 0;
    if(U_FAILURE(*status)) return 0;
    uloc_getKeywordValue(locid, keyword, kwVal, 1024-1,&subStatus);
    if(!uprv_strcmp(kwVal, DEFAULT_TAG)) {
        kwVal[0]=0;
    }
    uloc_getBaseName(locid, base, 1024-1,&subStatus);
#if defined(URES_TREE_DEBUG)
    fprintf(stderr, "getFunctionalEquivalent: \"%s\" [%s=%s] in %s - %s\n", 
            locid, keyword, kwVal, base, u_errorName(subStatus));
#endif
    ures_initStackObject(&bund1);
    ures_initStackObject(&bund2);
    
    
    uprv_strcpy(parent, base);
    uprv_strcpy(found, base);

    if(isAvailable) { 
        UEnumeration *locEnum = ures_openAvailableLocales(path, &subStatus);
        *isAvailable = true;
        if (U_SUCCESS(subStatus)) {
            *isAvailable = isLocaleInList(locEnum, parent, &subStatus);
        }
        uenum_close(locEnum);
    }

    if(U_FAILURE(subStatus)) {
        *status = subStatus;
        return 0;
    }
    
    do {
        subStatus = U_ZERO_ERROR;
        res = ures_open(path, parent, &subStatus);
        if(((subStatus == U_USING_FALLBACK_WARNING) ||
            (subStatus == U_USING_DEFAULT_WARNING)) && isAvailable)
        {
            *isAvailable = false;
        }
        isAvailable = nullptr; /* only want to set this the first time around */
        
#if defined(URES_TREE_DEBUG)
        fprintf(stderr, "%s;%s -> %s [%s]\n", path?path:"ICUDATA", parent, u_errorName(subStatus), ures_getLocale(res, &subStatus));
#endif
        if(U_FAILURE(subStatus)) {
            *status = subStatus;
        } else if(subStatus == U_ZERO_ERROR) {
            ures_getByKey(res,resName,&bund1, &subStatus);
            if(subStatus == U_ZERO_ERROR) {
                const char16_t *defUstr;
                int32_t defLen;
                /* look for default item */
#if defined(URES_TREE_DEBUG)
                fprintf(stderr, "%s;%s : loaded default -> %s\n",
                    path?path:"ICUDATA", parent, u_errorName(subStatus));
#endif
                defUstr = ures_getStringByKey(&bund1, DEFAULT_TAG, &defLen, &subStatus);
                if(U_SUCCESS(subStatus) && defLen) {
                    u_UCharsToChars(defUstr, defVal, u_strlen(defUstr));
#if defined(URES_TREE_DEBUG)
                    fprintf(stderr, "%s;%s -> default %s=%s,  %s\n", 
                        path?path:"ICUDATA", parent, keyword, defVal, u_errorName(subStatus));
#endif
                    uprv_strcpy(defLoc, parent);
                    if(kwVal[0]==0) {
                        uprv_strcpy(kwVal, defVal);
#if defined(URES_TREE_DEBUG)
                        fprintf(stderr, "%s;%s -> kwVal =  %s\n", 
                            path?path:"ICUDATA", parent, keyword, kwVal);
#endif
                    }
                }
            }
        }
        
        subStatus = U_ZERO_ERROR;

        if (res != nullptr) {
            uprv_strcpy(found, ures_getLocaleByType(res, ULOC_VALID_LOCALE, &subStatus));
        }

        uloc_getParent(found,parent,sizeof(parent),&subStatus);
        ures_close(res);
    } while(!defVal[0] && *found && uprv_strcmp(found, "root") != 0 && U_SUCCESS(*status));
    
    /* Now, see if we can find the kwVal collator.. start the search over.. */
    uprv_strcpy(parent, base);
    uprv_strcpy(found, base);
    
    do {
        subStatus = U_ZERO_ERROR;
        res = ures_open(path, parent, &subStatus);
        if((subStatus == U_USING_FALLBACK_WARNING) && isAvailable) {
            *isAvailable = false;
        }
        isAvailable = nullptr; /* only want to set this the first time around */
        
#if defined(URES_TREE_DEBUG)
        fprintf(stderr, "%s;%s -> %s (looking for %s)\n", 
            path?path:"ICUDATA", parent, u_errorName(subStatus), kwVal);
#endif
        if(U_FAILURE(subStatus)) {
            *status = subStatus;
        } else if(subStatus == U_ZERO_ERROR) {
            ures_getByKey(res,resName,&bund1, &subStatus);
#if defined(URES_TREE_DEBUG)
/**/ fprintf(stderr,"@%d [%s] %s\n", __LINE__, resName, u_errorName(subStatus));
#endif
            if(subStatus == U_ZERO_ERROR) {
                ures_getByKey(&bund1, kwVal, &bund2, &subStatus);
#if defined(URES_TREE_DEBUG)
/**/ fprintf(stderr,"@%d [%s] %s\n", __LINE__, kwVal, u_errorName(subStatus));
#endif
                if(subStatus == U_ZERO_ERROR) {
#if defined(URES_TREE_DEBUG)
                    fprintf(stderr, "%s;%s -> full0 %s=%s,  %s\n", 
                        path?path:"ICUDATA", parent, keyword, kwVal, u_errorName(subStatus));
#endif
                    uprv_strcpy(full, parent);
                    if(*full == 0) {
                        uprv_strcpy(full, "root");
                    }
                        /* now, recalculate default kw if need be */
                        if(uprv_strlen(defLoc) > uprv_strlen(full)) {
                          const char16_t *defUstr;
                          int32_t defLen;
                          /* look for default item */
#if defined(URES_TREE_DEBUG)
                            fprintf(stderr, "%s;%s -> recalculating Default0\n", 
                                    path?path:"ICUDATA", full);
#endif
                          defUstr = ures_getStringByKey(&bund1, DEFAULT_TAG, &defLen, &subStatus);
                          if(U_SUCCESS(subStatus) && defLen) {
                            u_UCharsToChars(defUstr, defVal, u_strlen(defUstr));
#if defined(URES_TREE_DEBUG)
                            fprintf(stderr, "%s;%s -> default0 %s=%s,  %s\n", 
                                    path?path:"ICUDATA", full, keyword, defVal, u_errorName(subStatus));
#endif
                            uprv_strcpy(defLoc, full);
                          }
                        } /* end of recalculate default KW */
#if defined(URES_TREE_DEBUG)
                        else {
                          fprintf(stderr, "No trim0,  %s <= %s\n", defLoc, full);
                        }
#endif
                } else {
#if defined(URES_TREE_DEBUG)
                    fprintf(stderr, "err=%s in %s looking for %s\n", 
                        u_errorName(subStatus), parent, kwVal);
#endif
                }
            }
        }
        
        subStatus = U_ZERO_ERROR;
        
        uprv_strcpy(found, parent);
        uloc_getParent(found,parent,1023,&subStatus);
        ures_close(res);
    } while(!full[0] && *found && U_SUCCESS(*status));
    
    if((full[0]==0) && uprv_strcmp(kwVal, defVal)) {
#if defined(URES_TREE_DEBUG)
        fprintf(stderr, "Failed to locate kw %s - try default %s\n", kwVal, defVal);
#endif
        uprv_strcpy(kwVal, defVal);
        uprv_strcpy(parent, base);
        uprv_strcpy(found, base);
        
        do { /* search for 'default' named item */
            subStatus = U_ZERO_ERROR;
            res = ures_open(path, parent, &subStatus);
            if((subStatus == U_USING_FALLBACK_WARNING) && isAvailable) {
                *isAvailable = false;
            }
            isAvailable = nullptr; /* only want to set this the first time around */
            
#if defined(URES_TREE_DEBUG)
            fprintf(stderr, "%s;%s -> %s (looking for default %s)\n",
                path?path:"ICUDATA", parent, u_errorName(subStatus), kwVal);
#endif
            if(U_FAILURE(subStatus)) {
                *status = subStatus;
            } else if(subStatus == U_ZERO_ERROR) {
                ures_getByKey(res,resName,&bund1, &subStatus);
                if(subStatus == U_ZERO_ERROR) {
                    ures_getByKey(&bund1, kwVal, &bund2, &subStatus);
                    if(subStatus == U_ZERO_ERROR) {
#if defined(URES_TREE_DEBUG)
                        fprintf(stderr, "%s;%s -> full1 %s=%s,  %s\n", path?path:"ICUDATA",
                            parent, keyword, kwVal, u_errorName(subStatus));
#endif
                        uprv_strcpy(full, parent);
                        if(*full == 0) {
                            uprv_strcpy(full, "root");
                        }
                        
                        /* now, recalculate default kw if need be */
                        if(uprv_strlen(defLoc) > uprv_strlen(full)) {
                          const char16_t *defUstr;
                          int32_t defLen;
                          /* look for default item */
#if defined(URES_TREE_DEBUG)
                            fprintf(stderr, "%s;%s -> recalculating Default1\n", 
                                    path?path:"ICUDATA", full);
#endif
                          defUstr = ures_getStringByKey(&bund1, DEFAULT_TAG, &defLen, &subStatus);
                          if(U_SUCCESS(subStatus) && defLen) {
                            u_UCharsToChars(defUstr, defVal, u_strlen(defUstr));
#if defined(URES_TREE_DEBUG)
                            fprintf(stderr, "%s;%s -> default %s=%s,  %s\n", 
                                    path?path:"ICUDATA", full, keyword, defVal, u_errorName(subStatus));
#endif
                            uprv_strcpy(defLoc, full);
                          }
                        } /* end of recalculate default KW */
#if defined(URES_TREE_DEBUG)
                        else {
                          fprintf(stderr, "No trim1,  %s <= %s\n", defLoc, full);
                        }
#endif
                    }
                }
            }
            subStatus = U_ZERO_ERROR;
            
            uprv_strcpy(found, parent);
            uloc_getParent(found,parent,1023,&subStatus);
            ures_close(res);
        } while(!full[0] && *found && U_SUCCESS(*status));
    }
    
    if(U_SUCCESS(*status)) {
        if(!full[0]) {
#if defined(URES_TREE_DEBUG)
          fprintf(stderr, "Still could not load keyword %s=%s\n", keyword, kwVal);
#endif
          *status = U_MISSING_RESOURCE_ERROR;
        } else if(omitDefault) {
#if defined(URES_TREE_DEBUG)
          fprintf(stderr,"Trim? full=%s, defLoc=%s, found=%s\n", full, defLoc, found);
#endif        
          if(uprv_strlen(defLoc) <= uprv_strlen(full)) {
            /* found the keyword in a *child* of where the default tag was present. */
            if(!uprv_strcmp(kwVal, defVal)) { /* if the requested kw is default, */
              /* and the default is in or in an ancestor of the current locale */
#if defined(URES_TREE_DEBUG)
              fprintf(stderr, "Removing unneeded var %s=%s\n", keyword, kwVal);
#endif
              kwVal[0]=0;
            }
          }
        }
        uprv_strcpy(found, full);
        if(kwVal[0]) {
            uprv_strcat(found, "@");
            uprv_strcat(found, keyword);
            uprv_strcat(found, "=");
            uprv_strcat(found, kwVal);
        } else if(!omitDefault) {
            uprv_strcat(found, "@");
            uprv_strcat(found, keyword);
            uprv_strcat(found, "=");
            uprv_strcat(found, defVal);
        }
    }
    /* we found the default locale - no need to repeat it.*/
    
    ures_close(&bund1);
    ures_close(&bund2);
    
    length = (int32_t)uprv_strlen(found);

    if(U_SUCCESS(*status)) {
        int32_t copyLength = uprv_min(length, resultCapacity);
        if(copyLength>0) {
            uprv_strncpy(result, found, copyLength);
        }
        if(length == 0) {
          *status = U_MISSING_RESOURCE_ERROR; 
        }
    } else {
        length = 0;
        result[0]=0;
    }
    return u_terminateChars(result, resultCapacity, length, status);
}

U_CAPI UEnumeration* U_EXPORT2
ures_getKeywordValues(const char *path, const char *keyword, UErrorCode *status)
{
#define VALUES_BUF_SIZE 2048
#define VALUES_LIST_SIZE 512
    
    char       valuesBuf[VALUES_BUF_SIZE];
    int32_t    valuesIndex = 0;
    const char *valuesList[VALUES_LIST_SIZE];
    int32_t    valuesCount = 0;
    
    const char *locale;
    int32_t     locLen;
    
    UEnumeration *locs = nullptr;
    
    UResourceBundle    item;
    UResourceBundle    subItem;
    
    ures_initStackObject(&item);
    ures_initStackObject(&subItem);
    locs = ures_openAvailableLocales(path, status);
    
    if(U_FAILURE(*status)) {
        ures_close(&item);
        ures_close(&subItem);
        return nullptr;
    }
    
    valuesBuf[0]=0;
    valuesBuf[1]=0;
    
    while((locale = uenum_next(locs, &locLen, status)) != 0) {
        UResourceBundle   *bund = nullptr;
        UResourceBundle   *subPtr = nullptr;
        UErrorCode subStatus = U_ZERO_ERROR; /* don't fail if a bundle is unopenable */
        bund = ures_open(path, locale, &subStatus);
        
#if defined(URES_TREE_DEBUG)
        if(!bund || U_FAILURE(subStatus)) {
            fprintf(stderr, "%s-%s values: Can't open %s locale - skipping. (%s)\n", 
                path?path:"<ICUDATA>", keyword, locale, u_errorName(subStatus));
        }
#endif
        
        ures_getByKey(bund, keyword, &item, &subStatus);
        
        if(!bund || U_FAILURE(subStatus)) {
#if defined(URES_TREE_DEBUG)
            fprintf(stderr, "%s-%s values: Can't find in %s - skipping. (%s)\n", 
                path?path:"<ICUDATA>", keyword, locale, u_errorName(subStatus));
#endif
            ures_close(bund);
            bund = nullptr;
            continue;
        }
        
        while((subPtr = ures_getNextResource(&item,&subItem,&subStatus)) != 0
            && U_SUCCESS(subStatus)) {
            const char *k;
            int32_t i;
            k = ures_getKey(subPtr);

#if defined(URES_TREE_DEBUG)
            /* fprintf(stderr, "%s | %s | %s | %s\n", path?path:"<ICUDATA>", keyword, locale, k); */
#endif
            if(k == nullptr || *k == 0 ||
                    uprv_strcmp(k, DEFAULT_TAG) == 0 || uprv_strncmp(k, "private-", 8) == 0) {
                // empty or "default" or unlisted type
                continue;
            }
            for(i=0; i<valuesCount; i++) {
                if(!uprv_strcmp(valuesList[i],k)) {
                    k = nullptr; /* found duplicate */
                    break;
                }
            }
            if(k != nullptr) {
                int32_t kLen = (int32_t)uprv_strlen(k);
                if((valuesCount >= (VALUES_LIST_SIZE-1)) ||       /* no more space in list .. */
                    ((valuesIndex+kLen+1+1) >= VALUES_BUF_SIZE)) { /* no more space in buffer (string + 2 nulls) */
                    *status = U_ILLEGAL_ARGUMENT_ERROR; /* out of space.. */
                } else {
                    uprv_strcpy(valuesBuf+valuesIndex, k);
                    valuesList[valuesCount++] = valuesBuf+valuesIndex;
                    valuesIndex += kLen;
#if defined(URES_TREE_DEBUG)
                    fprintf(stderr, "%s | %s | %s | [%s]   (UNIQUE)\n",
                        path?path:"<ICUDATA>", keyword, locale, k);
#endif
                    valuesBuf[valuesIndex++] = 0; /* terminate */
                }
            }
        }
        ures_close(bund);
    }
    valuesBuf[valuesIndex++] = 0; /* terminate */
    
    ures_close(&item);
    ures_close(&subItem);
    uenum_close(locs);
#if defined(URES_TREE_DEBUG)
    fprintf(stderr, "%s:  size %d, #%d\n", u_errorName(*status), 
        valuesIndex, valuesCount);
#endif
    return uloc_openKeywordList(valuesBuf, valuesIndex, status);
}
#if 0
/* This code isn't needed, and given the documentation warnings the implementation is suspect */
U_CAPI UBool U_EXPORT2
ures_equal(const UResourceBundle* res1, const UResourceBundle* res2){
    if(res1==nullptr || res2==nullptr){
        return res1==res2; /* pointer comparison */
    }
    if(res1->fKey==nullptr||  res2->fKey==nullptr){
        return (res1->fKey==res2->fKey);
    }else{
        if(uprv_strcmp(res1->fKey, res2->fKey)!=0){
            return false;
        }
    }
    if(uprv_strcmp(res1->fData->fName, res2->fData->fName)!=0){
        return false;
    }
    if(res1->fData->fPath == nullptr||  res2->fData->fPath==nullptr){
        return (res1->fData->fPath == res2->fData->fPath);
    }else{
        if(uprv_strcmp(res1->fData->fPath, res2->fData->fPath)!=0){
            return false;
        }
    }
    if(uprv_strcmp(res1->fData->fParent->fName, res2->fData->fParent->fName)!=0){
        return false;
    }
    if(uprv_strcmp(res1->fData->fParent->fPath, res2->fData->fParent->fPath)!=0){
        return false;
    }
    if(uprv_strncmp(res1->fResPath, res2->fResPath, res1->fResPathLen)!=0){
        return false;
    }
    if(res1->fRes != res2->fRes){
        return false;
    }
    return true;
}
U_CAPI UResourceBundle* U_EXPORT2
ures_clone(const UResourceBundle* res, UErrorCode* status){
    UResourceBundle* bundle = nullptr;
    UResourceBundle* ret = nullptr;
    if(U_FAILURE(*status) || res == nullptr){
        return nullptr;
    }
    bundle = ures_open(res->fData->fPath, res->fData->fName, status);
    if(res->fResPath!=nullptr){
        ret = ures_findSubResource(bundle, res->fResPath, nullptr, status);
        ures_close(bundle);
    }else{
        ret = bundle;
    }
    return ret;
}
U_CAPI const UResourceBundle* U_EXPORT2
ures_getParentBundle(const UResourceBundle* res){
    if(res==nullptr){
        return nullptr;
    }
    return res->fParentRes;
}
#endif

U_CAPI void U_EXPORT2
ures_getVersionByKey(const UResourceBundle* res, const char *key, UVersionInfo ver, UErrorCode *status) {
  const char16_t *str;
  int32_t len;
  str = ures_getStringByKey(res, key, &len, status);
  if(U_SUCCESS(*status)) {
    u_versionFromUString(ver, str);
  } 
}

/* eof */