summaryrefslogtreecommitdiff
path: root/libjava/classpath/gnu/CORBA/CDR/AbstractCdrInput.java
blob: fae16eed9d7db0b8e603e9f6eb0fe988733a5e40 (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
/* AbstractCdrInput.java --
   Copyright (C) 2005 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU Classpath is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING.  If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA.

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
conditions of the GNU General Public License cover the whole
combination.

As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
modules, and to copy and distribute the resulting executable under
terms of your choice, provided that you also meet, for each linked
independent module, the terms and conditions of the license of that
module.  An independent module is a module which is not derived from
or based on this library.  If you modify this library, you may extend
this exception to your version of the library, but you are not
obligated to do so.  If you do not wish to do so, delete this
exception statement from your version. */


package gnu.CORBA.CDR;

import gnu.CORBA.BigDecimalHelper;
import gnu.CORBA.OrbFunctional;
import gnu.CORBA.GIOP.CharSets_OSF;
import gnu.CORBA.GIOP.CodeSetServiceContext;
import gnu.CORBA.IOR;
import gnu.CORBA.IorDelegate;
import gnu.CORBA.Minor;
import gnu.CORBA.TypeCodeHelper;
import gnu.CORBA.Unexpected;
import gnu.CORBA.Version;
import gnu.CORBA.gnuAny;
import gnu.CORBA.StubLocator;

import org.omg.CORBA.Any;
import org.omg.CORBA.AnySeqHolder;
import org.omg.CORBA.BAD_OPERATION;
import org.omg.CORBA.BooleanSeqHolder;
import org.omg.CORBA.CharSeqHolder;
import org.omg.CORBA.DoubleSeqHolder;
import org.omg.CORBA.FloatSeqHolder;
import org.omg.CORBA.LongLongSeqHolder;
import org.omg.CORBA.LongSeqHolder;
import org.omg.CORBA.MARSHAL;
import org.omg.CORBA.ORB;
import org.omg.CORBA.OctetSeqHolder;
import org.omg.CORBA.ShortSeqHolder;
import org.omg.CORBA.TypeCode;
import org.omg.CORBA.TypeCodePackage.BadKind;
import org.omg.CORBA.TypeCodePackage.Bounds;
import org.omg.CORBA.ULongLongSeqHolder;
import org.omg.CORBA.ULongSeqHolder;
import org.omg.CORBA.UShortSeqHolder;
import org.omg.CORBA.WCharSeqHolder;
import org.omg.CORBA.portable.InputStream;
import org.omg.CORBA.portable.ObjectImpl;

import java.io.EOFException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Serializable;

import java.math.BigDecimal;

/**
 * A simple CORBA CDR (common data representation) input stream, reading data
 * from the given {@link java.io.InputStream}. The primitive types are aligned
 * on they natural boundaries by implementing the abstract method
 * {@link #align(int boundary)}.
 *
 * The same class also implements {@link org.omg.CORBA.DataInputStream} to read
 * the object content in a user defined way.
 *
 * TODO This class uses 16 bits per Unicode character only, as it was until jdk
 * 1.4 inclusive.
 *
 * @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
 */
public abstract class AbstractCdrInput
  extends org.omg.CORBA_2_3.portable.InputStream
  implements org.omg.CORBA.DataInputStream
{
  /**
   * The runtime, associated with this stream. This field is only used when
   * reading and writing value types and filled-in in gnu.CORBA.CDR.Vio.
   */
  public transient gnuRuntime runtime;

  /**
   * The message, explaining that the exception has been thrown due unexpected
   * end of the input stream. This usually happens the server and client
   * disagree on communication or data representation rules.
   */
  protected static final String UNEXP_EOF = "Unexpected end of stream";

  /**
   * This instance is used to convert primitive data types into the byte
   * sequences.
   */
  protected AbstractDataInput b;

  /**
   * The input stream, from where the data are actually being read.
   */
  protected java.io.InputStream actual_stream;

  /**
   * The associated orb, if any.
   */
  protected ORB orb;

  /**
   * The GIOP version.
   */
  protected Version giop = new Version(1, 2);

  /**
   * The code set information.
   */
  protected CodeSetServiceContext codeset = CodeSetServiceContext.STANDARD;

  /**
   * The name of the currently used narrow charset, null if the native narrow
   * charset is used.
   */
  private String narrow_charset = null;

  /**
   * The name of the currently used wide charset, null if the native wide
   * charset is used.
   */
  private String wide_charset = null;

  /**
   * True if the native code set is used for narrow characters. If the set is
   * native, no the intermediate Reader object is instantiated when writing
   * characters.
   */
  private boolean narrow_native;

  /**
   * True if the native code set is used for wide characters. If the set is
   * native, no the intermediate Reader object is instantiated when writing
   * characters.
   */
  private boolean wide_native;

  /**
   * If true, the stream expect the multi-byte data in the form "less
   * significant byte first" (Little Endian). This is the opposite to the java
   * standard (Big Endian).
   */
  private boolean little_endian;

  /**
   * Creates the stream. The stream reads Big Endian by default.
   *
   * @param readFrom a stream to read CORBA input from.
   */
  public AbstractCdrInput(java.io.InputStream readFrom)
  {
    setInputStream(readFrom);
    setCodeSet(CodeSetServiceContext.STANDARD);
  }

  /**
   * Creates the stream, requiring the subsequent call of
   * {@link #setInputStream(java.io.InputStream)}.
   */
  public AbstractCdrInput()
  {
    setCodeSet(CodeSetServiceContext.STANDARD);
  }

  /**
   * Set the Big Endian or Little Endian encoding. The stream reads Big Endian
   * by default.
   *
   * @param use_big_endian if true, the stream expect the multi-byte data in
   * the form "most significant byte first" (Big Endian). This is the
   * java standard.
   */
  public void setBigEndian(boolean use_big_endian)
  {
    little_endian = !use_big_endian;
    setInputStream(actual_stream);
  }

  /**
   * Get the used encoding.
   *
   * @return true for Big Endian, false for Little Endian.
   */
  public boolean isBigEndian()
  {
    return !little_endian;
  }

  /**
   * Clone all important settings to another stream.
   */
  public void cloneSettings(AbstractCdrInput stream)
  {
    stream.setBigEndian(isBigEndian());
    stream.setCodeSet(getCodeSet());
    stream.setVersion(giop);
    stream.setOrb(orb);
  }

  /**
   * Set the input stream that receives the CORBA input.
   *
   * @param readFrom the stream.
   */
  public void setInputStream(java.io.InputStream readFrom)
  {
    if (little_endian)
      b = new LittleEndianInputStream(readFrom);
    else
      b = new BigEndianInputStream(readFrom);

    actual_stream = readFrom;
  }

  /**
   * Set the alignment offset, if the index of the first byte in the stream is
   * different from 0.
   */
  public abstract void setOffset(int offset);

  /**
   * Set the orb, associated with this stream.
   *
   * @param an_orb
   */
  public void setOrb(ORB an_orb)
  {
    orb = an_orb;
  }

  /**
   * Set the GIOP version. Some data types are written differently for the
   * different versions. The default version is 1.0 .
   */
  public void setVersion(Version giop_version)
  {
    giop = giop_version;
  }

  /**
   * Align the curretn position at the given natural boundary.
   */
  public abstract void align(int boundary);

  /**
   * Reads the CORBA unsigned long (java int), returning the value in the
   * sufficiently large java long.
   */
  public long gnu_read_ulong()
  {
    try
      {
        long l = b.readInt();
        l &= 0xFFFFFFF;
        return l;
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }
    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Read the unsigned short integer value and return it as java int,
   * sufficiently large to hold all values.
   */
  public int gnu_read_ushort()
  {
    try
      {
        align(2);
        return b.readUnsignedShort();
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Return the associated {@link ORB}.
   *
   * @return the associated {@link ORB} or null is no such is set.
   */
  public ORB orb()
  {
    return orb;
  }

  /**
   * Read a single byte directly from the buffer.
   */
  public int read()
    throws java.io.IOException
  {
    try
      {
        return b.read();
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }
  }

  /**
   * Read bytes directly from the buffer.
   */
  public int read(byte[] x, int ofs, int len)
    throws java.io.IOException
  {
    try
      {
        return b.read(x, ofs, len);
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }
  }

  /**
   * Read bytes directly from the buffer.
   */
  public int read(byte[] x)
    throws java.io.IOException
  {
    try
      {
        return b.read(x);
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }
  }

  /**
   * Read the CORBA object. The object to read is represented in the form of the
   * plain (not a string-encoded) IOR profile without the heading endian
   * indicator. The responsible method for reading such data is
   * {@link IOR.read_no_endian}.
   *
   * The returned object is usually casted into the given type using the .narrow
   * method of its helper, despite in some cases the direct cast would also
   * work.
   *
   * The null objects are recognised from the empty profile set. For such
   * objects, null is returned.
   *
   * @return the loaded and constructed object.
   */
  public org.omg.CORBA.Object read_Object()
  {
    try
      {
        IOR ior = new IOR();
        ior._read_no_endian(this);

        if (ior.Id == null)
          return null;

        // Check maybe this is a remote reference to the local object.
        // This is only possible if we access the repository of the
        // connected object.
        if (orb instanceof OrbFunctional)
          {
            OrbFunctional forb = (OrbFunctional) orb;
            org.omg.CORBA.Object local = forb.find_local_object(ior);
            if (local != null)
              return local;
          }

        // Search for the available stubs.
        ObjectImpl impl = StubLocator.search(orb, ior);
        try
          {
            if (impl._get_delegate() == null)
              impl._set_delegate(new IorDelegate(orb, ior));
          }
        catch (BAD_OPERATION ex)
          {
            // Some colaborants may throw this exception
            // in response to the attempt to get the unset delegate.
            impl._set_delegate(new IorDelegate(orb, ior));
          }

        return impl;
      }
    catch (IOException ex)
      {
        MARSHAL bad = new MARSHAL();
        bad.minor = Minor.IOR;
        bad.initCause(ex);
        throw bad;
      }
  }

  /**
   * Read the type code. The type code format is defined in the CORBA
   * documenation.
   */
  public TypeCode read_TypeCode()
  {
    try
      {
        return TypeCodeHelper.read(this);
      }

    catch (Bounds ex)
      {
        throw new Unexpected();
      }
    catch (BadKind ex)
      {
        throw new Unexpected();
      }
  }

  /**
   * Read the CORBA {@link Any}. This method first reads the type code, then
   * delegates the functionality to {@link Any#read_value}.
   */
  public Any read_any()
  {
    TypeCode ty = read_TypeCode();
    gnuAny any = new gnuAny();
    any.read_value(this, ty);
    return any;
  }

  /**
   * Read the boolean, treating any non zero byte as true, zero byte as false.
   */
  public boolean read_boolean()
  {
    try
      {
        return b.read() == 0 ? false : true;
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }
    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Read the array of boolean.
   */
  public void read_boolean_array(boolean[] x, int offs, int len)
  {
    try
      {
        for (int i = offs; i < offs + len; i++)
          {
            x[i] = b.read() == 0 ? false : true;
          }
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Read a character using narrow charset encoding. Depending form which
   * encoding is set, this still can be Unicode or ever wider.
   */
  public char read_char()
  {
    try
      {
        if (narrow_native)
          return (char) b.read();
        else
          return (char) new InputStreamReader((InputStream) b, narrow_charset).read();
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Read a character array, using narrow charset encoding.
   */
  public void read_char_array(char[] x, int offset, int length)
  {
    try
      {
        if (narrow_native)
          {
            for (int i = offset; i < offset + length; i++)
              x[i] = (char) b.read();
          }
        else
          {
            InputStreamReader reader = new InputStreamReader((InputStream) b,
              narrow_charset);
            reader.read(x, offset, length);
          }
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Read the double value, IEEE 754 format.
   */
  public double read_double()
  {
    try
      {
        align(8);
        return b.readDouble();
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected();
      }
  }

  /**
   * Read the array of double values, IEEE 754 format.
   */
  public void read_double_array(double[] x, int offs, int len)
  {
    try
      {
        align(8);
        for (int i = offs; i < offs + len; i++)
          {
            x[i] = b.readDouble();
          }
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Read the encapsulated stream. If the encapsulated sequence appears to be in
   * the Little endian format, the flag of the returned stream is set to read
   * Little endian.
   */
  public BufferredCdrInput read_encapsulation()
  {
    try
      {
        int l = read_long();

        byte[] r = new byte[l];
        int n = 0;
        while (n < r.length)
          {
            n += read(r, n, r.length - n);
          }

        BufferredCdrInput capsule = new BufferredCdrInput(r);
        capsule.setOrb(orb);

        int endian = capsule.read_octet();

        if (endian != 0)
          {
            capsule.setBigEndian(false);
          }

        return capsule;
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Read the CORBA fixed (the end of the <code>fixed</code> can be determined
   * by its last byte). The scale is always assumed to be zero.
   */
  public BigDecimal read_fixed()
  {
    try
      {
        return BigDecimalHelper.read(this, 0);
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Read the float value, IEEE 754 format.
   */
  public float read_float()
  {
    try
      {
        align(4);
        return b.readFloat();
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Read an array of float values, IEEE 754 format.
   */
  public void read_float_array(float[] x, int offs, int len)
  {
    try
      {
        align(4);
        for (int i = offs; i < offs + len; i++)
          {
            x[i] = b.readFloat();
          }
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Read the CORBA long (java int), high byte first.
   */
  public int read_long()
  {
    try
      {
        align(4);
        return b.readInt();
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Read an array of CORBA longs (java ints).
   */
  public void read_long_array(int[] x, int offs, int len)
  {
    try
      {
        align(4);
        for (int i = offs; i < offs + len; i++)
          {
            x[i] = b.readInt();
          }
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Read the CORBA long long (java long).
   */
  public long read_longlong()
  {
    try
      {
        align(8);
        return b.readLong();
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Read an array of CORBA long longs (java longs).
   */
  public void read_longlong_array(long[] x, int offs, int len)
  {
    try
      {
        align(8);
        for (int i = offs; i < offs + len; i++)
          {
            x[i] = b.readLong();
          }
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Read a single byte.
   */
  public byte read_octet()
  {
    try
      {
        return b.readByte();
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Read the byte array.
   */
  public void read_octet_array(byte[] x, int offs, int len)
  {
    try
      {
        b.read(x, offs, len);
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Read the length of the byte array as CORBA long and then the array itseld.
   */
  public byte[] read_sequence()
  {
    try
      {
        int l = read_long();
        byte[] buf = new byte[l];
        if (l > 0)
          {
            b.readFully(buf);
          }
        return buf;
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Read the CORBA short integer.
   */
  public short read_short()
  {
    try
      {
        align(2);
        return b.readShort();
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Read the array of CORBA short integer values.
   */
  public void read_short_array(short[] x, int offs, int len)
  {
    try
      {
        align(2);
        for (int i = offs; i < offs + len; i++)
          {
            x[i] = b.readShort();
          }
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Read a singe byte string. The method firs reads the byte array and then
   * calls a constructor to create a string from this array. The character
   * encoding, if previously set, is taken into consideration.
   *
   * @return a loaded string.
   */
  public String read_string()
  {
    int n = 0;
    try
      {
        align(4);

        n = b.readInt();
        byte[] s = new byte[n];
        b.read(s);

        // Discard the null terminator.
        if (narrow_charset == null)
          return new String(s, 0, n - 1);
        else
          return new String(s, 0, n - 1, narrow_charset);
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }
    catch (IOException ex)
      {
        throw new Unexpected();
      }
    catch (NegativeArraySizeException nex)
      {
        MARSHAL m = new MARSHAL("Input stream broken, got " + n + "(0x"
          + Integer.toHexString(n) + ") as a string size");
        m.minor = Minor.Negative;
        throw m;
      }
  }

  /**
   * Reads the CORBA unsigned long (java int), delegating functionality to
   * {@link #read_long}.
   */
  public int read_ulong()
  {
    return read_long();
  }

  /**
   * Reads the array of CORBA unsigned long (java integer) values, delegating
   * functionality to {@link #real_long_array}.
   */
  public void read_ulong_array(int[] x, int offs, int len)
  {
    read_long_array(x, offs, len);
  }

  /**
   * Read the CORBA unsigned long long value, delegating functionality to
   * {@link #read_longlong}. There is no way to return values over the limit of
   * the java signed long in other way than returning the negative value.
   */
  public long read_ulonglong()
  {
    return read_longlong();
  }

  /**
   * Reads the array of CORBA long long (java long) values, delegating
   * functionality to {@link #real_longlong_array}.
   */
  public void read_ulonglong_array(long[] x, int offs, int len)
  {
    read_longlong_array(x, offs, len);
  }

  /**
   * Read the unsigned short integer value. Due strange specification, the
   * returned value must be the short type as well, so the the best solution
   * seems just to delegete functionality to read_short.
   */
  public short read_ushort()
  {
    return read_short();
  }

  /**
   * Read an array of unsigned short values, delegating the functionality to
   * {@link read_short_array}.
   */
  public void read_ushort_array(short[] x, int offs, int len)
  {
    read_short_array(x, offs, len);
  }

  /**
   * Reads the wide character using the encoding, specified in the wide_charset.
   */
  public char read_wchar()
  {
    try
      {
        if (giop.until_inclusive(1, 1))
          {
            align(2);

            if (wide_native)
              return (char) b.readShort();
            else
              return (char) new InputStreamReader((InputStream) b, wide_charset).read();
          }
        else
          {
            int l = b.read();
            if (l == 2 && wide_native)
              return b.readChar();
            else if (l <= 0)
              {
                 MARSHAL m = new MARSHAL("wchar size " + l);
                 m.minor = Minor.Negative;
                 throw m;
              }
            else
              {
                byte[] bytes = new byte[l];
                b.readFully(bytes);
                String cs;

                if (bytes.length > 2 && bytes[0] == 0xFE && bytes[1] == 0xFF)
                  cs = new String(bytes, 2, bytes.length - 2, wide_charset);
                else if (bytes.length > 2 && bytes[0] == 0xFF
                  && bytes[1] == 0xFE)
                  {
                    // Litle endian detected - swap bytes.
                    byte t;
                    for (int i = 3; i < bytes.length; i = i + 2)
                      {
                        t = bytes[i];
                        bytes[i - 1] = bytes[i];
                        bytes[i] = t;
                      }
                    cs = new String(bytes, 2, bytes.length - 2, wide_charset);
                  }
                else
                  cs = new String(bytes, wide_charset);

                return cs.charAt(0);
              }
          }
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }
    catch (IOException ex)
      {
        throw new Unexpected();
      }
  }

  /**
   * Read an array of "wide chars", each representing a two byte Unicode
   * character, high byte first.
   */
  public void read_wchar_array(char[] x, int offset, int length)
  {
    try
      {
        if (giop.until_inclusive(1, 1))
          align(2);

        if (wide_native)
          {
            for (int i = offset; i < offset + length; i++)
              x[i] = (char) b.readShort();
          }
        else
          {
            InputStreamReader reader = new InputStreamReader((InputStream) b,
              wide_charset);
            reader.read(x, offset, length);
          }
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Reads the string in wide character format (ussually UTF-16, Unicode). Takes
   * the currently set charset into consideration.
   *
   * If the native (UTF-16) encoding is used of the GIOP protocol is before 1.2,
   * delegates functionality to "plain" {@link #read_wstring_UTF_16}.
   */
  public String read_wstring()
  {
    // Native encoding or word oriented data.
    if (wide_native || giop.until_inclusive(1, 1))
      return read_wstring_UTF_16();
    try
      {
        align(4);

        int n = b.readInt();
        byte[] s = new byte[n];
        b.read(s);

        return new String(s, 0, n, wide_charset);
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Reads first length of the string and the all characters as an Unicode
   * (UTF-16) characters. Mind that GIOP 1.1 has the extra null character at the
   * end that must be discarded.
   */
  public String read_wstring_UTF_16()
  {
    try
      {
        int p = 0;
        int n = read_long();

        if (n<0)
          {
            MARSHAL m = new MARSHAL("Negative string size");
            m.minor = Minor.Negative;
            throw m;
          }

        // The null terminator that is no longer present since 1.2 .
        int nt = giop.since_inclusive(1, 2) ? 0 : 1;

        // Convert bytes to shorts.
        n = n / 2;

        // Empty string.
        if (n == 0)
          return "";

        char[] s = new char[n];

        for (int i = 0; i < s.length; i++)
          s[i] = (char) b.readShort();

        // Check for the byte order marker here.
        if (s[0] == 0xFEFF)
          {
            // Big endian encoding - do nothing, but move the pointer
            // one position forward.
            p = 1;
          }
        else if (s[0] == 0xFFFE)
          {
            // Little endian encoding, swap the bytes and move one
            // position forward.
            p = 1;

            for (int i = p; i < s.length; i++)
              s[i] = swap(s[i]);
          }

        // Discard the null terminator and, if needed, the endian marker.
        String r = new String(s, p, n - nt - p);
        return r;
      }
    catch (EOFException ex)
      {
        MARSHAL t = new MARSHAL(UNEXP_EOF);
        t.minor = Minor.EOF;
        t.initCause(ex);
        throw t;
      }

    catch (IOException ex)
      {
        throw new Unexpected(ex);
      }
  }

  /**
   * Swap bytes in the character.
   */
  public static char swap(char x)
  {
    int hi;
    int lo;

    lo = x & 0xFF;
    hi = (x >> 8) & 0xFF;

    return (char) ((lo << 8) | hi);
  }

  /**
   * Set the current code set context.
   */
  public void setCodeSet(CodeSetServiceContext a_codeset)
  {
    this.codeset = a_codeset;
    narrow_charset = CharSets_OSF.getName(codeset.char_data);
    wide_charset = CharSets_OSF.getName(codeset.wide_char_data);

    narrow_native = CharSets_OSF.NATIVE_CHARACTER == codeset.char_data;
    wide_native = CharSets_OSF.NATIVE_WIDE_CHARACTER == codeset.wide_char_data;
  }

  /**
   * Get the current code set context.
   */
  public CodeSetServiceContext getCodeSet()
  {
    return codeset;
  }

  /**
   * Read the object that is an instance of the given class. The current
   * implementation delegates functionality to the parameterless
   * {@link readObject()}.
   *
   * @param klass a class of that this object the instance is.
   *
   * @return the returned object.
   */
  public org.omg.CORBA.Object read_Object(Class klass)
  {
    return read_Object();
  }

  /**
   * Read a value type structure from the stream.
   *
   * OMG specification states the writing format is outside the scope of GIOP
   * definition. This implementation uses java serialization mechanism, calling
   * {@link ObjectInputStream#readObject}
   *
   * @return an value type structure, unmarshaled from the stream
   */
  public Serializable read_Value()
  {
    return read_value();
  }

  /**
   * Read the abstract interface. An abstract interface can be either CORBA
   * value type or CORBA object and is returned as an abstract java.lang.Object.
   *
   * As specified in OMG specification, this reads a single boolean and then
   * delegates either to {@link #read_Object()} (for false) or to
   * {@link #read_Value()} (for true).
   *
   * @return an abstract interface, unmarshaled from the stream
   */
  public java.lang.Object read_Abstract()
  {
    return read_abstract_interface();
  }

  /**
   * Read an array. In OMG specification is written that if the data does not
   * fit into the holder value field, that array must be resized. The
   * implementation follows this rule. If the holder value field contains null,
   * it is newly instantiated.
   */
  public void read_char_array(CharSeqHolder holder, int offset, int length)
  {
    holder.value = ensureArray(holder.value, offset, length);
    read_char_array(holder.value, offset, length);
  }

  /**
   * Read an array. In OMG specification is written that if the data does not
   * fit into the holder value field, that array must be resized. The
   * implementation follows this rule. If the holder value field contains null,
   * it is newly instantiated.
   */
  public void read_wchar_array(WCharSeqHolder holder, int offset, int length)
  {
    holder.value = ensureArray(holder.value, offset, length);
    read_wchar_array(holder.value, offset, length);
  }

  /**
   * If required, allocate or resize the char array to fit the newly read
   * values.
   *
   * @param holder_value the existing char array, may be null.
   * @param offset the required offset to read.
   * @param length the length of the new sequence.
   *
   * @return the allocated or resized array, same array if no such operations
   * are required.
   */
  private char[] ensureArray(char[] holder_value, int offset, int length)
  {
    if (holder_value == null)
      return new char[offset + length];
    else if (holder_value.length < offset + length)
      {
        char[] value = new char[offset + length];
        System.arraycopy(holder_value, 0, value, 0, holder_value.length);
        return value;
      }
    else
      return holder_value;
  }

  /**
   * Read an array. In OMG specification is written that if the data does not
   * fit into the holder value field, that array must be resized. The
   * implementation follows this rule. If the holder value field contains null,
   * it is newly instantiated.
   */
  public void read_ulong_array(ULongSeqHolder holder, int offset, int length)
  {
    holder.value = ensureArray(holder.value, offset, length);
    read_ulong_array(holder.value, offset, length);
  }

  /**
   * Read an array. In OMG specification is written that if the data does not
   * fit into the holder value field, that array must be resized. The
   * implementation follows this rule. If the holder value field contains null,
   * it is newly instantiated.
   */
  public void read_long_array(LongSeqHolder holder, int offset, int length)
  {
    holder.value = ensureArray(holder.value, offset, length);
    read_ulong_array(holder.value, offset, length);
  }

  /**
   * If required, allocate or resize the int array to fit the newly read values.
   *
   * @param holder_value the existing int array, may be null.
   * @param offset the required offset to read.
   * @param length the length of the new sequence.
   *
   * @return the allocated or resized array, same array if no such operations
   * are required.
   */
  private int[] ensureArray(int[] holder_value, int offset, int length)
  {
    if (holder_value == null)
      return new int[offset + length];
    else if (holder_value.length < offset + length)
      {
        int[] value = new int[offset + length];
        System.arraycopy(holder_value, 0, value, 0, holder_value.length);
        return value;
      }
    else
      return holder_value;
  }

  /**
   * Read an array. In OMG specification is written that if the data does not
   * fit into the holder value field, that array must be resized. The
   * implementation follows this rule. If the holder value field contains null,
   * it is newly instantiated.
   */
  public void read_float_array(FloatSeqHolder holder, int offset, int length)
  {
    holder.value = ensureArray(holder.value, offset, length);
    read_float_array(holder.value, offset, length);
  }

  /**
   * If required, allocate or resize the float array to fit the newly read
   * values.
   *
   * @param holder_value the existing float array, may be null.
   * @param offset the required offset to read.
   * @param length the length of the new sequence.
   *
   * @return the allocated or resized array, same array if no such operations
   * are required.
   */
  private float[] ensureArray(float[] holder_value, int offset, int length)
  {
    if (holder_value == null)
      return new float[offset + length];
    else if (holder_value.length < offset + length)
      {
        float[] value = new float[offset + length];
        System.arraycopy(holder_value, 0, value, 0, holder_value.length);
        return value;
      }
    else
      return holder_value;
  }

  /**
   * Read an array. In OMG specification is written that if the data does not
   * fit into the holder value field, that array must be resized. The
   * implementation follows this rule. If the holder value field contains null,
   * it is newly instantiated.
   */
  public void read_double_array(DoubleSeqHolder holder, int offset, int length)
  {
    holder.value = ensureArray(holder.value, offset, length);
    read_double_array(holder.value, offset, length);
  }

  /**
   * If required, allocate or resize the double array to fit the newly read
   * values.
   *
   * @param holder_value the existing double array, may be null.
   * @param offset the required offset to read.
   * @param length the length of the new sequence.
   *
   * @return the allocated or resized array, same array if no such operations
   * are required.
   */
  private double[] ensureArray(double[] holder_value, int offset, int length)
  {
    if (holder_value == null)
      return new double[offset + length];
    else if (holder_value.length < offset + length)
      {
        double[] value = new double[offset + length];
        System.arraycopy(holder_value, 0, value, 0, holder_value.length);
        return value;
      }
    else
      return holder_value;
  }

  /**
   * Read an array. In OMG specification is written that if the data does not
   * fit into the holder value field, that array must be resized. The
   * implementation follows this rule. If the holder value field contains null,
   * it is newly instantiated.
   */
  public void read_short_array(ShortSeqHolder holder, int offset, int length)
  {
    holder.value = ensureArray(holder.value, offset, length);
    read_short_array(holder.value, offset, length);
  }

  /** {@inheritDoc} */
  public void read_ushort_array(UShortSeqHolder holder, int offset, int length)
  {
    holder.value = ensureArray(holder.value, offset, length);
    read_ushort_array(holder.value, offset, length);
  }

  /**
   * If required, allocate or resize the short array to fit the newly read
   * values.
   *
   * @param holder_value the existing short array, may be null.
   * @param offset the required offset to read.
   * @param length the length of the new sequence.
   *
   * @return the allocated or resized array, same array if no such operations
   * are required.
   */
  private short[] ensureArray(short[] holder_value, int offset, int length)
  {
    if (holder_value == null)
      return new short[offset + length];
    else if (holder_value.length < offset + length)
      {
        short[] value = new short[offset + length];
        System.arraycopy(holder_value, 0, value, 0, holder_value.length);
        return value;
      }
    else
      return holder_value;
  }

  /**
   * Read an array. In OMG specification is written that if the data does not
   * fit into the holder value field, that array must be resized. The
   * implementation follows this rule. If the holder value field contains null,
   * it is newly instantiated.
   */
  public void read_octet_array(OctetSeqHolder holder, int offset, int length)
  {
    holder.value = ensureArray(holder.value, offset, length);
    read_octet_array(holder.value, offset, length);
  }

  /**
   * If required, allocate or resize the byte array to fit the newly read
   * values.
   *
   * @param holder_value the existing byte array, may be null.
   * @param offset the required offset to read.
   * @param length the length of the new sequence.
   *
   * @return the allocated or resized array, same array if no such operations
   * are required.
   */
  private byte[] ensureArray(byte[] holder_value, int offset, int length)
  {
    if (holder_value == null)
      return new byte[offset + length];
    else if (holder_value.length < offset + length)
      {
        byte[] value = new byte[offset + length];
        System.arraycopy(holder_value, 0, value, 0, holder_value.length);
        return value;
      }
    else
      return holder_value;
  }

  /**
   * Read an array. In OMG specification is written that if the data does not
   * fit into the holder value field, that array must be resized. The
   * implementation follows this rule. If the holder value field contains null,
   * it is newly instantiated.
   */
  public void read_longlong_array(LongLongSeqHolder holder, int offset,
    int length)
  {
    holder.value = ensureArray(holder.value, offset, length);
    read_longlong_array(holder.value, offset, length);
  }

  /**
   * Read an array. In OMG specification is written that if the data does not
   * fit into the holder value field, that array must be resized. The
   * implementation follows this rule. If the holder value field contains null,
   * it is newly instantiated.
   */
  public void read_ulonglong_array(ULongLongSeqHolder holder, int offset,
    int length)
  {
    holder.value = ensureArray(holder.value, offset, length);
    read_ulonglong_array(holder.value, offset, length);
  }

  /**
   * If required, allocate or resize the array of longs to fit the newly read
   * values.
   *
   * @param holder_value the existing array, may be null.
   * @param offset the required offset to read.
   * @param length the length of the new sequence.
   *
   * @return the allocated or resized array, same array if no such operations
   * are required.
   */
  private long[] ensureArray(long[] holder_value, int offset, int length)
  {
    if (holder_value == null)
      return new long[offset + length];
    else if (holder_value.length < offset + length)
      {
        long[] value = new long[offset + length];
        System.arraycopy(holder_value, 0, value, 0, holder_value.length);
        return value;
      }
    else
      return holder_value;
  }

  /**
   * Read an array. In OMG specification is written that if the data does not
   * fit into the holder value field, that array must be resized. The
   * implementation follows this rule. If the holder value field contains null,
   * it is newly instantiated.
   */
  public void read_boolean_array(BooleanSeqHolder holder, int offset, int length)
  {
    holder.value = ensureArray(holder.value, offset, length);
    read_boolean_array(holder.value, offset, length);
  }

  /**
   * If required, allocate or resize the array of booleans to fit the newly read
   * values.
   *
   * @param holder_value the existing array of booleans, may be null.
   * @param offset the required offset to read.
   * @param length the length of the new sequence.
   *
   * @return the allocated or resized array, same array if no such operations
   * are required.
   */
  private boolean[] ensureArray(boolean[] holder_value, int offset, int length)
  {
    if (holder_value == null)
      return new boolean[offset + length];
    else if (holder_value.length < offset + length)
      {
        boolean[] value = new boolean[offset + length];
        System.arraycopy(holder_value, 0, value, 0, holder_value.length);
        return value;
      }
    else
      return holder_value;
  }

  /**
   * Read an array. In OMG specification is written that if the data does not
   * fit into the holder value field, that array must be resized. The
   * implementation follows this rule. If the holder value field contains null,
   * it is newly instantiated.
   */
  public void read_any_array(AnySeqHolder holder, int offset, int length)
  {
    holder.value = ensureArray(holder.value, offset, length);
    for (int i = offset; i < offset + length; i++)
      {
        holder.value[i] = read_any();
      }
  }

  /**
   * If required, allocate or resize the array of Anys to fit the newly read
   * values.
   *
   * @param holder_value the existing array of Anys, may be null.
   * @param offset the required offset to read.
   * @param length the length of the new sequence.
   *
   * @return the allocated or resized array, same array if no such operations
   * are required.
   */
  private Any[] ensureArray(Any[] holder_value, int offset, int length)
  {
    if (holder_value == null)
      return new Any[offset + length];
    else if (holder_value.length < offset + length)
      {
        Any[] value = new Any[offset + length];
        System.arraycopy(holder_value, 0, value, 0, holder_value.length);
        return value;
      }
    else
      return holder_value;
  }

  /**
   * This method is required to represent the DataInputStream as a value type
   * object.
   *
   * @return a single entity "IDL:omg.org/CORBA/DataInputStream:1.0", always.
   */
  public String[] _truncatable_ids()
  {
    return new String[] { "IDL:omg.org/CORBA/DataInputStream:1.0" };
  }
}