File: tunicode.c

package info (click to toggle)
hdf5 1.10.0-patch1+docs-4
  • links: PTS, VCS
  • area: main
  • in suites: sid
  • size: 143,572 kB
  • ctags: 38,562
  • sloc: ansic: 472,614; f90: 28,734; java: 27,116; xml: 17,791; sh: 16,757; cpp: 14,937; makefile: 1,769; perl: 1,339; yacc: 338; lex: 184; ruby: 24
file content (864 lines) | stat: -rw-r--r-- 28,804 bytes parent folder | download | duplicates (2)
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
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * Copyright by The HDF Group.                                               *
 * Copyright by the Board of Trustees of the University of Illinois.         *
 * All rights reserved.                                                      *
 *                                                                           *
 * This file is part of HDF5.  The full HDF5 copyright notice, including     *
 * terms governing use, modification, and redistribution, is contained in    *
 * the files COPYING and Copyright.html.  COPYING can be found at the root   *
 * of the source code distribution tree; Copyright.html can be found at the  *
 * root level of an installed copy of the electronic HDF5 document set and   *
 * is linked from the top-level documents page.  It can also be found at     *
 * http://hdfgroup.org/HDF5/doc/Copyright.html.  If you do not have          *
 * access to either file, you may request a copy from help@hdfgroup.org.     *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/* Unicode test */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "testhdf5.h"

#define NUM_CHARS 16
#define MAX_STRING_LENGTH ((NUM_CHARS * 4) + 1) /* Max length in bytes */
#define MAX_PATH_LENGTH (MAX_STRING_LENGTH + 20) /* Max length in bytes */
#define MAX_CODE_POINT 0x200000
#define FILENAME "unicode.h5"
/* A buffer to hold two copies of the UTF-8 string */
#define LONG_BUF_SIZE (2 * MAX_STRING_LENGTH + 4)

#define DSET1_NAME "fl_string_dataset"
#define DSET3_NAME "dataset3"
#define DSET4_NAME "dataset4"
#define VL_DSET1_NAME "vl_dset_1"
#define GROUP1_NAME "group1"
#define GROUP2_NAME "group2"
#define GROUP3_NAME "group3"
#define GROUP4_NAME "group4"

#define RANK 1
#define COMP_INT_VAL 7
#define COMP_FLOAT_VAL -42.0F
#define COMP_DOUBLE_VAL 42.0F

/* Test function prototypes */
void test_fl_string(hid_t fid, const char *string);
void test_strpad(hid_t fid, const char *string);
void test_vl_string(hid_t fid, const char *string);
void test_objnames(hid_t fid, const char *string);
void test_attrname(hid_t fid, const char *string);
void test_compound(hid_t fid, const char *string);
void test_enum(hid_t fid, const char *string);
void test_opaque(hid_t fid, const char *string);

/* Utility function prototypes */
static hid_t mkstr(size_t len, H5T_str_t strpad);
unsigned int write_char(unsigned int c, char * test_string, unsigned int cur_pos);
void dump_string(const char * string);

/*
 * test_fl_string
 * Tests that UTF-8 can be used for fixed-length string data.
 * Writes the string to a dataset and reads it back again.
 */
void test_fl_string(hid_t fid, const char *string)
{
  hid_t dtype_id, space_id, dset_id;
  hsize_t dims = 1;
  char read_buf[MAX_STRING_LENGTH];
  H5T_cset_t cset;
  herr_t ret;

  /* Create the datatype, ensure that the character set behaves
   * correctly (it should default to ASCII and can be set to UTF8)
   */
  dtype_id = H5Tcopy(H5T_C_S1);
  CHECK(dtype_id, FAIL, "H5Tcopy");
  ret = H5Tset_size(dtype_id, (size_t)MAX_STRING_LENGTH);
  CHECK(ret, FAIL, "H5Tset_size");
  cset = H5Tget_cset(dtype_id);
  VERIFY(cset, H5T_CSET_ASCII, "H5Tget_cset");
  ret = H5Tset_cset(dtype_id, H5T_CSET_UTF8);
  CHECK(ret, FAIL, "H5Tset_cset");
  cset = H5Tget_cset(dtype_id);
  VERIFY(cset, H5T_CSET_UTF8, "H5Tget_cset");

  /* Create dataspace for a dataset */
  space_id = H5Screate_simple(RANK, &dims, NULL);
  CHECK(space_id, FAIL, "H5Screate_simple");

  /* Create a dataset */
  dset_id = H5Dcreate2(fid, DSET1_NAME, dtype_id, space_id, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
  CHECK(dset_id, FAIL, "H5Dcreate2");

  /* Write UTF-8 string to dataset */
  ret = H5Dwrite(dset_id, dtype_id, H5S_ALL, H5S_ALL, H5P_DEFAULT, string);
  CHECK(ret, FAIL, "H5Dwrite");

  /* Read string back and make sure it is unchanged */
  ret = H5Dread(dset_id, dtype_id, H5S_ALL, H5S_ALL, H5P_DEFAULT, read_buf);
  CHECK(ret, FAIL, "H5Dread");

  VERIFY(HDstrcmp(string, read_buf), 0, "strcmp");

  /* Close all */
  ret = H5Dclose(dset_id);
  CHECK(ret, FAIL, "H5Dclose");

  ret = H5Tclose(dtype_id);
  CHECK(ret, FAIL, "H5Tclose");
  ret = H5Sclose(space_id);
  CHECK(ret, FAIL, "H5Sclose");
}

/*
 * test_strpad
 * Tests string padding for a UTF-8 string.
 * Converts strings to shorter and then longer strings.
 * Borrows heavily from dtypes.c, but is more complicated because
 * the string is randomly generated.
 */
void test_strpad(hid_t H5_ATTR_UNUSED fid, const char *string)
{
    /* buf is used to hold the data that H5Tconvert operates on. */
    char     buf[LONG_BUF_SIZE];

    /* cmpbuf holds the output that H5Tconvert should produce,
     * to compare against the actual output. */
    char     cmpbuf[LONG_BUF_SIZE];

    /* new_string is a slightly modified version of the UTF-8
     * string to make the tests run more smoothly. */
    char     new_string[MAX_STRING_LENGTH + 2];

    size_t   length;  /* Length of new_string in bytes */
    size_t   small_len;  /* Size of the small datatype */
    size_t   big_len;   /* Size of the larger datatype */
    hid_t    src_type, dst_type;
    herr_t   ret;

    /* The following tests are simpler if the UTF-8 string contains
     * the right number of bytes (even or odd, depending on the test).
     * We create a 'new_string' whose length is convenient by prepending
     * an 'x' to 'string' when necessary. */
    length = HDstrlen(string);
    if(length % 2 != 1)
    {
      HDstrcpy(new_string, "x");
      HDstrcat(new_string, string);
      length++;
    } else {
      HDstrcpy(new_string, string);
    }


    /* Convert a null-terminated string to a shorter and longer null
     * terminated string. */

    /* Create a src_type that holds the UTF-8 string and its final NULL */
    big_len = length + 1;                     /* +1 byte for final NULL */
    HDassert((2*big_len)<=sizeof(cmpbuf));
    src_type = mkstr(big_len, H5T_STR_NULLTERM);
    CHECK(src_type, FAIL, "mkstr");
    /* Create a dst_type that holds half of the UTF-8 string and a final
     * NULL */
    small_len = (length + 1) / 2;
    dst_type = mkstr(small_len, H5T_STR_NULLTERM);
    CHECK(dst_type, FAIL, "mkstr");

    /* Fill the buffer with two copies of the UTF-8 string, each with a
     * terminating NULL.  It will look like "abcdefg\0abcdefg\0". */
    strncpy(buf, new_string, big_len);
    strncpy(&buf[big_len], new_string, big_len);

    ret = H5Tconvert(src_type, dst_type, (size_t)2, buf, NULL, H5P_DEFAULT);
    CHECK(ret, FAIL, "H5Tconvert");

    /* After conversion, the buffer should look like
     * "abc\0abc\0abcdefg\0".  Note that this is just what the bytes look
     * like; UTF-8 characters may well have been truncated.
     * To check that the conversion worked properly, we'll build this
     * string manually. */
    HDstrncpy(cmpbuf, new_string, small_len - 1);
    cmpbuf[small_len - 1] = '\0';
    HDstrncpy(&cmpbuf[small_len], new_string, small_len -1);
    cmpbuf[2 * small_len - 1] = '\0';
    HDstrcpy(&cmpbuf[2 * small_len], new_string);

    VERIFY(HDmemcmp(buf, cmpbuf, 2*big_len), 0, "HDmemcmp");

    /* Now convert from smaller datatype to bigger datatype.  This should
     * leave our buffer looking like: "abc\0\0\0\0\0abc\0\0\0\0\0" */
    ret = H5Tconvert(dst_type, src_type, (size_t)2, buf, NULL, H5P_DEFAULT);
    CHECK(ret, FAIL, "H5Tconvert");

    /* First fill the buffer with NULLs */
    HDmemset(cmpbuf, '\0', (size_t)LONG_BUF_SIZE);
    /* Copy in the characters */
    HDstrncpy(cmpbuf, new_string, small_len -1);
    HDstrncpy(&cmpbuf[big_len], new_string, small_len -1);

    VERIFY(HDmemcmp(buf, cmpbuf, 2*big_len), 0, "HDmemcmp");

    ret = H5Tclose(src_type);
    CHECK(ret, FAIL, "H5Tclose");
    ret = H5Tclose(dst_type);
    CHECK(ret, FAIL, "H5Tclose");


    /* Now test null padding.  Null-padded strings do *not* need
     * terminating NULLs, so the sizes of the datatypes are slightly
     * different and we want a string with an even number of characters. */
    length = HDstrlen(string);
    if(length % 2 != 0)
    {
      HDstrcpy(new_string, "x");
      HDstrcat(new_string, string);
      length++;
    } else {
      HDstrcpy(new_string, string);
    }

    /* Create a src_type that holds the UTF-8 string */
    big_len = length;
    HDassert((2*big_len)<=sizeof(cmpbuf));
    src_type = mkstr(big_len, H5T_STR_NULLPAD);
    CHECK(src_type, FAIL, "mkstr");
    /* Create a dst_type that holds half of the UTF-8 string */
    small_len = length / 2;
    dst_type = mkstr(small_len, H5T_STR_NULLPAD);
    CHECK(dst_type, FAIL, "mkstr");

    /* Fill the buffer with two copies of the UTF-8 string.
     * It will look like "abcdefghabcdefgh". */
    strncpy(buf, new_string, big_len);
    strncpy(&buf[big_len], new_string, big_len);

    ret = H5Tconvert(src_type, dst_type, (size_t)2, buf, NULL, H5P_DEFAULT);
    CHECK(ret, FAIL, "H5Tconvert");

    /* After conversion, the buffer should look like
     * "abcdabcdabcdefgh".  Note that this is just what the bytes look
     * like; UTF-8 characters may well have been truncated.
     * To check that the conversion worked properly, we'll build this
     * string manually. */
    HDstrncpy(cmpbuf, new_string, small_len);
    HDstrncpy(&cmpbuf[small_len], new_string, small_len);
    HDstrncpy(&cmpbuf[2 * small_len], new_string, big_len);

    VERIFY(HDmemcmp(buf, cmpbuf, 2*big_len), 0, "HDmemcmp");

    /* Now convert from smaller datatype to bigger datatype.  This should
     * leave our buffer looking like: "abcd\0\0\0\0abcd\0\0\0\0" */
    ret = H5Tconvert(dst_type, src_type, (size_t)2, buf, NULL, H5P_DEFAULT);
    CHECK(ret, FAIL, "H5Tconvert");

    /* First fill the buffer with NULLs */
    HDmemset(cmpbuf, '\0', (size_t)LONG_BUF_SIZE);
    /* Copy in the characters */
    HDstrncpy(cmpbuf, new_string, small_len);
    HDstrncpy(&cmpbuf[big_len], new_string, small_len);

    VERIFY(HDmemcmp(buf, cmpbuf, 2*big_len), 0, "HDmemcmp");

    ret = H5Tclose(src_type);
    CHECK(ret, FAIL, "H5Tclose");
    ret = H5Tclose(dst_type);
    CHECK(ret, FAIL, "H5Tclose");


    /* Test space padding.  This is very similar to null-padding; we can
       use the same values of length, small_len, and big_len. */

    src_type = mkstr(big_len, H5T_STR_SPACEPAD);
    CHECK(src_type, FAIL, "mkstr");
    dst_type = mkstr(small_len, H5T_STR_SPACEPAD);
    CHECK(src_type, FAIL, "mkstr");

    /* Fill the buffer with two copies of the UTF-8 string.
     * It will look like "abcdefghabcdefgh". */
    HDstrcpy(buf, new_string);
    HDstrcpy(&buf[big_len], new_string);

    ret = H5Tconvert(src_type, dst_type, (size_t)2, buf, NULL, H5P_DEFAULT);
    CHECK(ret, FAIL, "H5Tconvert");

    /* After conversion, the buffer should look like
     * "abcdabcdabcdefgh".  Note that this is just what the bytes look
     * like; UTF-8 characters may have been truncated.
     * To check that the conversion worked properly, we'll build this
     * string manually. */
    HDstrncpy(cmpbuf, new_string, small_len);
    HDstrncpy(&cmpbuf[small_len], new_string, small_len);
    HDstrncpy(&cmpbuf[2 * small_len], new_string, big_len);

    VERIFY(HDmemcmp(buf, cmpbuf, 2*big_len), 0, "HDmemcmp");

    /* Now convert from smaller datatype to bigger datatype.  This should
     * leave our buffer looking like: "abcd    abcd    " */
    ret = H5Tconvert(dst_type, src_type, (size_t)2, buf, NULL, H5P_DEFAULT);
    CHECK(ret, FAIL, "H5Tconvert");

    /* First fill the buffer with spaces */
    HDmemset(cmpbuf, ' ', (size_t)LONG_BUF_SIZE);
    /* Copy in the characters */
    HDstrncpy(cmpbuf, new_string, small_len);
    HDstrncpy(&cmpbuf[big_len], new_string, small_len);

    VERIFY(HDmemcmp(buf, cmpbuf, 2*big_len), 0, "HDmemcmp");

    ret = H5Tclose(src_type);
    CHECK(ret, FAIL, "H5Tclose");
    ret = H5Tclose(dst_type);
    CHECK(ret, FAIL, "H5Tclose");
}


/*
 * test_vl_string
 * Tests variable-length string datatype with UTF-8 strings.
 */
void test_vl_string(hid_t fid, const char *string)
{
  hid_t type_id, space_id, dset_id;
  hsize_t dims = 1;
  hsize_t size;  /* Number of bytes used */
  char *read_buf[1];
  herr_t ret;

  /* Create dataspace for datasets */
  space_id = H5Screate_simple(RANK, &dims, NULL);
  CHECK(space_id, FAIL, "H5Screate_simple");

  /* Create a datatype to refer to */
  type_id = H5Tcopy(H5T_C_S1);
  CHECK(type_id, FAIL, "H5Tcopy");
  ret = H5Tset_size(type_id, H5T_VARIABLE);
  CHECK(ret, FAIL, "H5Tset_size");

  /* Create a dataset */
  dset_id = H5Dcreate2(fid, VL_DSET1_NAME, type_id, space_id, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
  CHECK(dset_id, FAIL, "H5Dcreate2");

  /* Write dataset to disk */
  ret = H5Dwrite(dset_id, type_id, H5S_ALL, H5S_ALL, H5P_DEFAULT, &string);
  CHECK(ret, FAIL, "H5Dwrite");

  /* Make certain the correct amount of memory will be used */
  ret = H5Dvlen_get_buf_size(dset_id, type_id, space_id, &size);
  CHECK(ret, FAIL, "H5Dvlen_get_buf_size");
  VERIFY(size, (hsize_t)HDstrlen(string) + 1, "H5Dvlen_get_buf_size");

  /* Read dataset from disk */
  ret = H5Dread(dset_id, type_id, H5S_ALL, H5S_ALL, H5P_DEFAULT, read_buf);
  CHECK(ret, FAIL, "H5Dread");

  /* Compare data read in */
  VERIFY(HDstrcmp(string, read_buf[0]), 0, "strcmp");

  /* Reclaim the read VL data */
  ret = H5Dvlen_reclaim(type_id, space_id, H5P_DEFAULT, read_buf);
  CHECK(ret, FAIL, "H5Dvlen_reclaim");

  /* Close all */
  ret = H5Dclose(dset_id);
  CHECK(ret, FAIL, "H5Dclose");
  ret = H5Tclose(type_id);
  CHECK(ret, FAIL, "H5Tclose");
  ret = H5Sclose(space_id);
  CHECK(ret, FAIL, "H5Sclose");
}

/*
 * test_objnames
 * Tests that UTF-8 can be used for object names in the file.
 * Tests groups, datasets, named datatypes, and soft links.
 * Note that this test doesn't actually mark the names as being
 * in UTF-8.  At the time this test was written, that feature
 * didn't exist in HDF5, and when the character encoding property
 * was added to links it didn't change how they were stored in the file,
 * -JML 2/2/2006
 */
void test_objnames(hid_t fid, const char* string)
{
  hid_t grp_id, grp1_id, grp2_id, grp3_id;
  hid_t type_id, dset_id, space_id;
  char read_buf[MAX_STRING_LENGTH];
  char path_buf[MAX_PATH_LENGTH];
  hsize_t dims=1;
  hobj_ref_t obj_ref;
  herr_t ret;

  /* Create a group with a UTF-8 name */
  grp_id = H5Gcreate2(fid, string, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
  CHECK(grp_id, FAIL, "H5Gcreate2");

  /* Set a comment on the group to test that we can access the group
   * Also test that UTF-8 comments can be read.
   */
  ret = H5Oset_comment_by_name(fid, string, string, H5P_DEFAULT);
  CHECK(ret, FAIL, "H5Oset_comment_by_name");
  ret = H5Oget_comment_by_name(fid, string, read_buf, (size_t)MAX_STRING_LENGTH, H5P_DEFAULT);
  CHECK(ret, FAIL, "H5Oget_comment_by_name");

  ret = H5Gclose(grp_id);
  CHECK(ret, FAIL, "H5Gclose");

  VERIFY(HDstrcmp(string, read_buf), 0, "strcmp");

  /* Create a new dataset with a UTF-8 name */
  grp1_id = H5Gcreate2(fid, GROUP1_NAME, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
  CHECK(grp1_id, FAIL, "H5Gcreate2");

  space_id = H5Screate_simple(RANK, &dims, NULL);
  CHECK(space_id, FAIL, "H5Screate_simple");
  dset_id = H5Dcreate2(grp1_id, string, H5T_NATIVE_INT, space_id, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
  CHECK(dset_id, FAIL, "H5Dcreate2");

  /* Make sure that dataset can be opened again */
  ret = H5Dclose(dset_id);
  CHECK(ret, FAIL, "H5Dclose");
  ret = H5Sclose(space_id);
  CHECK(ret, FAIL, "H5Sclose");

  dset_id = H5Dopen2(grp1_id, string, H5P_DEFAULT);
  CHECK(ret, FAIL, "H5Dopen2");
  ret = H5Dclose(dset_id);
  CHECK(ret, FAIL, "H5Dclose");
  ret = H5Gclose(grp1_id);
  CHECK(ret, FAIL, "H5Gclose");

  /* Do the same for a named datatype */
  grp2_id = H5Gcreate2(fid, GROUP2_NAME, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
  CHECK(grp2_id, FAIL, "H5Gcreate2");

  type_id = H5Tcreate(H5T_OPAQUE, (size_t)1);
  CHECK(type_id, FAIL, "H5Tcreate");
  ret = H5Tcommit2(grp2_id, string, type_id, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
  CHECK(type_id, FAIL, "H5Tcommit2");
  ret = H5Tclose(type_id);
  CHECK(type_id, FAIL, "H5Tclose");

  type_id = H5Topen2(grp2_id, string, H5P_DEFAULT);
  CHECK(type_id, FAIL, "H5Topen2");
  ret = H5Tclose(type_id);
  CHECK(type_id, FAIL, "H5Tclose");

  /* Don't close the group -- use it to test that object references
   * can refer to objects named in UTF-8 */

  space_id = H5Screate_simple(RANK, &dims, NULL);
  CHECK(space_id, FAIL, "H5Screate_simple");
  dset_id = H5Dcreate2(grp2_id, DSET3_NAME, H5T_STD_REF_OBJ, space_id, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
  CHECK(ret, FAIL, "H5Dcreate2");

  /* Create reference to named datatype */
  ret = H5Rcreate(&obj_ref, grp2_id, string, H5R_OBJECT, (hid_t)-1);
  CHECK(ret, FAIL, "H5Rcreate");
  /* Write selection and read it back*/
  ret = H5Dwrite(dset_id, H5T_STD_REF_OBJ, H5S_ALL, H5S_ALL, H5P_DEFAULT, &obj_ref);
  CHECK(ret, FAIL, "H5Dwrite");
  ret = H5Dread(dset_id, H5T_STD_REF_OBJ, H5S_ALL, H5S_ALL, H5P_DEFAULT, &obj_ref);
  CHECK(ret, FAIL, "H5Dread");

  /* Ensure that we can open named datatype using object reference */
  type_id = H5Rdereference2(dset_id, H5P_DEFAULT, H5R_OBJECT, &obj_ref);
  CHECK(type_id, FAIL, "H5Rdereference2");
  ret = H5Tcommitted(type_id);
  VERIFY(ret, 1, "H5Tcommitted");

  ret = H5Tclose(type_id);
  CHECK(type_id, FAIL, "H5Tclose");
  ret = H5Dclose(dset_id);
  CHECK(ret, FAIL, "H5Dclose");
  ret = H5Sclose(space_id);
  CHECK(ret, FAIL, "H5Sclose");

  ret = H5Gclose(grp2_id);
  CHECK(ret, FAIL, "H5Gclose");

  /* Create "group3".  Build a hard link from group3 to group2, which has
   * a datatype with the UTF-8 name.  Create a soft link in group3
   * pointing through the hard link to the datatype.  Give the soft
   * link a name in UTF-8.  Ensure that the soft link works. */

  grp3_id = H5Gcreate2(fid, GROUP3_NAME, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
  CHECK(grp3_id, FAIL, "H5Gcreate2");

  ret = H5Lcreate_hard(fid, GROUP2_NAME, grp3_id, GROUP2_NAME, H5P_DEFAULT, H5P_DEFAULT);
  CHECK(ret, FAIL, "H5Lcreate_hard");
  HDstrcpy(path_buf, GROUP2_NAME);
  HDstrcat(path_buf, "/");
  HDstrcat(path_buf, string);
  ret = H5Lcreate_hard(grp3_id, path_buf, H5L_SAME_LOC, string, H5P_DEFAULT, H5P_DEFAULT);
  CHECK(ret, FAIL, "H5Lcreate_hard");

  /* Open named datatype using soft link */
  type_id = H5Topen2(grp3_id, string, H5P_DEFAULT);
  CHECK(type_id, FAIL, "H5Topen2");

  ret = H5Tclose(type_id);
  CHECK(type_id, FAIL, "H5Tclose");
  ret = H5Gclose(grp3_id);
  CHECK(ret, FAIL, "H5Gclose");
}

/*
 * test_attrname
 * Test that attributes can deal with UTF-8 strings
 */
void test_attrname(hid_t fid, const char * string)
{
  hid_t group_id, attr_id;
  hid_t dtype_id, space_id;
  hsize_t dims=1;
  char read_buf[MAX_STRING_LENGTH];
  herr_t ret;

 /* Create a new group and give it an attribute whose
  * name and value are UTF-8 strings.
  */
  group_id = H5Gcreate2(fid, GROUP4_NAME, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
  CHECK(group_id, FAIL, "H5Gcreate2");

  space_id = H5Screate_simple(RANK, &dims, NULL);
  CHECK(space_id, FAIL, "H5Screate_simple");
  dtype_id = H5Tcopy(H5T_C_S1);
  CHECK(dtype_id, FAIL, "H5Tcopy");
  ret = H5Tset_size(dtype_id, (size_t)MAX_STRING_LENGTH);
  CHECK(ret, FAIL, "H5Tset_size");

  /* Create the attribute and check that its name is correct */
  attr_id = H5Acreate2(group_id, string, dtype_id, space_id, H5P_DEFAULT, H5P_DEFAULT);
  CHECK(attr_id, FAIL, "H5Acreate2");
  ret = H5Aget_name(attr_id, (size_t)MAX_STRING_LENGTH, read_buf);
  CHECK(ret, FAIL, "H5Aget_name");
  ret = strcmp(read_buf, string);
  VERIFY(ret, 0, "strcmp");
  read_buf[0] = '\0';

  /* Try writing and reading from the attribute */
  ret = H5Awrite(attr_id, dtype_id, string);
  CHECK(ret, FAIL, "H5Awrite");
  ret = H5Aread(attr_id, dtype_id, read_buf);
  CHECK(ret, FAIL, "H5Aread");
  ret = strcmp(read_buf, string);
  VERIFY(ret, 0, "strcmp");

  /* Clean up */
  ret = H5Aclose(attr_id);
  CHECK(ret, FAIL, "H5Aclose");
  ret = H5Tclose(dtype_id);
  CHECK(ret, FAIL, "H5Tclose");
  ret = H5Sclose(space_id);
  CHECK(ret, FAIL, "H5Sclose");
  ret = H5Gclose(group_id);
  CHECK(ret, FAIL, "H5Gclose");
}

/*
 * test_compound
 * Test that compound datatypes can have UTF-8 field names.
 */
void test_compound(hid_t fid, const char * string)
{
  /* Define two compound structures, s1_t and s2_t.
   * s2_t is a subset of s1_t, with two out of three
   * fields.
   * This is stolen from the h5_compound example.
   */
  typedef struct s1_t {
      int    a;
      double c;
      float b;
  } s1_t;
  typedef struct s2_t {
      double c;
      int    a;
  } s2_t;
  /* Actual variable declarations */
  s1_t       s1;
  s2_t       s2;
  hid_t      s1_tid, s2_tid;
  hid_t      space_id, dset_id;
  hsize_t    dim = 1;
  char      *readbuf;
  herr_t     ret;

  /* Initialize compound data */
  HDmemset(&s1, 0, sizeof(s1_t));        /* To make purify happy */
  s1.a = COMP_INT_VAL;
  s1.c = COMP_DOUBLE_VAL;
  s1.b = COMP_FLOAT_VAL;

  /* Create compound datatypes using UTF-8 field name */
  s1_tid = H5Tcreate (H5T_COMPOUND, sizeof(s1_t));
  CHECK(s1_tid, FAIL, "H5Tcreate");
  ret = H5Tinsert(s1_tid, string, HOFFSET(s1_t, a), H5T_NATIVE_INT);
  CHECK(ret, FAIL, "H5Tinsert");

  /* Check that the field name was stored correctly */
  readbuf = H5Tget_member_name(s1_tid, 0);
  ret = HDstrcmp(readbuf, string);
  VERIFY(ret, 0, "strcmp");
  H5free_memory(readbuf);

  /* Add the other fields to the datatype */
  ret = H5Tinsert(s1_tid, "c_name", HOFFSET(s1_t, c), H5T_NATIVE_DOUBLE);
  CHECK(ret, FAIL, "H5Tinsert");
  ret = H5Tinsert(s1_tid, "b_name", HOFFSET(s1_t, b), H5T_NATIVE_FLOAT);
  CHECK(ret, FAIL, "H5Tinsert");

  /* Create second datatype, with only two fields. */
  s2_tid = H5Tcreate (H5T_COMPOUND, sizeof(s2_t));
  CHECK(s2_tid, FAIL, "H5Tcreate");
  ret = H5Tinsert(s2_tid, "c_name", HOFFSET(s2_t, c), H5T_NATIVE_DOUBLE);
  CHECK(ret, FAIL, "H5Tinsert");
  ret = H5Tinsert(s2_tid, string, HOFFSET(s2_t, a), H5T_NATIVE_INT);
  CHECK(ret, FAIL, "H5Tinsert");

  /* Create the dataspace and dataset. */
  space_id = H5Screate_simple(1, &dim, NULL);
  CHECK(space_id, FAIL, "H5Screate_simple");
  dset_id = H5Dcreate2(fid, DSET4_NAME, s1_tid, space_id, H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT);
  CHECK(dset_id, FAIL, "H5Dcreate2");

  /* Write data to the dataset. */
  ret = H5Dwrite(dset_id, s1_tid, H5S_ALL, H5S_ALL, H5P_DEFAULT, &s1);
  CHECK(ret, FAIL, "H5Dwrite");

  /* Ensure that data can be read back by field name into s2 struct */
  ret = H5Dread(dset_id, s2_tid, H5S_ALL, H5S_ALL, H5P_DEFAULT, &s2);
  CHECK(ret, FAIL, "H5Dread");

  VERIFY(s2.a, COMP_INT_VAL, "H5Dread");
  VERIFY(s2.c, COMP_DOUBLE_VAL, "H5Dread");

  /* Clean up */
  ret = H5Tclose(s1_tid);
  CHECK(ret, FAIL, "H5Tclose");
  ret = H5Tclose(s2_tid);
  CHECK(ret, FAIL, "H5Tclose");
  ret = H5Sclose(space_id);
  CHECK(ret, FAIL, "H5Sclose");
  ret = H5Dclose(dset_id);
  CHECK(ret, FAIL, "H5Dclose");
}

/*
 * test_enum
 * Test that enumerated datatypes can have UTF-8 member names.
 */
void test_enum(hid_t H5_ATTR_UNUSED fid, const char * string)
{
  /* Define an enumerated type */
  typedef enum {
    E1_RED,
    E1_GREEN,
    E1_BLUE,
    E1_WHITE
  } c_e1;
  /* Variable declarations */
  c_e1 val;
  herr_t ret;
  hid_t type_id;
  char readbuf[MAX_STRING_LENGTH];

  /* Create an enumerated datatype in HDF5 with a UTF-8 member name*/
  type_id = H5Tcreate(H5T_ENUM, sizeof(c_e1));
  CHECK(type_id, FAIL, "H5Tcreate");
  val = E1_RED;
  ret = H5Tenum_insert(type_id, "RED", &val);
  CHECK(ret, FAIL, "H5Tenum_insert");
  val = E1_GREEN;
  ret = H5Tenum_insert(type_id, "GREEN", &val);
  CHECK(ret, FAIL, "H5Tenum_insert");
  val = E1_BLUE;
  ret = H5Tenum_insert(type_id, "BLUE", &val);
  CHECK(ret, FAIL, "H5Tenum_insert");
  val = E1_WHITE;
  ret = H5Tenum_insert(type_id, string, &val);
  CHECK(ret, FAIL, "H5Tenum_insert");

  /* Ensure that UTF-8 member name gives the right value and vice versa. */
  ret = H5Tenum_valueof(type_id, string, &val);
  CHECK(ret, FAIL, "H5Tenum_valueof");
  VERIFY(val, E1_WHITE, "H5Tenum_valueof");
  ret = H5Tenum_nameof(type_id, &val, readbuf, (size_t)MAX_STRING_LENGTH);
  CHECK(ret, FAIL, "H5Tenum_nameof");
  ret = strcmp(readbuf, string);
  VERIFY(ret, 0, "strcmp");

  /* Close the datatype */
  ret = H5Tclose(type_id);
  CHECK(ret, FAIL, "H5Tclose");
}

/*
 * test_opaque
 * Test comments on opaque datatypes
 */
void test_opaque(hid_t H5_ATTR_UNUSED fid, const char * string)
{
  hid_t type_id;
  char * read_buf;
  herr_t ret;

  /* Create an opaque type and give it a UTF-8 tag */
  type_id = H5Tcreate(H5T_OPAQUE, (size_t)4);
  CHECK(type_id, FAIL, "H5Tcreate");
  ret = H5Tset_tag(type_id, string);
  CHECK(ret, FAIL, "H5Tset_tag");

  /* Read the tag back. */
  read_buf = H5Tget_tag(type_id);
  ret = strcmp(read_buf, string);
  VERIFY(ret, 0, "H5Tget_tag");
  H5free_memory(read_buf);

  ret = H5Tclose(type_id);
  CHECK(ret, FAIL, "H5Tclose");
}

/*********************/
/* Utility functions */
/*********************/

/* mkstr
 * Borrwed from dtypes.c.
 * Creates a new string data type.  Used in string padding tests */
static hid_t mkstr(size_t len, H5T_str_t strpad)
{
    hid_t       t;
    if((t = H5Tcopy(H5T_C_S1)) < 0) return -1;
    if(H5Tset_size(t, len) < 0) return -1;
    if(H5Tset_strpad(t, strpad) < 0) return -1;
    return t;
}

/* write_char
 * Append a unicode code point c to test_string in UTF-8 encoding.
 * Return the new end of the string.
 */
unsigned int write_char(unsigned int c, char * test_string, unsigned int cur_pos)
{
  if (c < 0x80) {
    test_string[cur_pos] = c;
    cur_pos++;
  }
  else if (c < 0x800) {
    test_string[cur_pos] = (0xC0 | c>>6);
    test_string[cur_pos+1] = (0x80 | (c & 0x3F));
    cur_pos += 2;
  }
  else if (c < 0x10000) {
    test_string[cur_pos] = (0xE0 | c>>12);
    test_string[cur_pos+1] = (0x80 | (c>>6 & 0x3F));
    test_string[cur_pos+2] = (0x80 | (c & 0x3F));
    cur_pos += 3;
  }
  else if (c < 0x200000) {
    test_string[cur_pos] = (0xF0 | c>>18);
    test_string[cur_pos+1] = (0x80 | (c>>12 & 0x3F));
    test_string[cur_pos+2] = (0x80 | (c>>6 & 0x3F));
    test_string[cur_pos+3] = (0x80 | (c & 0x3F));
    cur_pos += 4;
  }

  return cur_pos;
}

/* dump_string
 * Print a string both as text (which will look like garbage) and as hex.
 * The text display is not guaranteed to be accurate--certain characters
 * could confuse printf (e.g., '\n'). */
void dump_string(const char * string)
{
  unsigned int length;
  unsigned int x;

  printf("The string was:\n %s", string);
  printf("Or in hex:\n");

  length = strlen(string);

  for(x=0; x<length; x++)
    printf("%x ", string[x] & (0x000000FF));

  printf("\n");
}

/* Main test.
 * Create a string of random Unicode characters, then run each test with
 * that string.
 */
void test_unicode(void)
{
  char test_string[MAX_STRING_LENGTH];
  unsigned int cur_pos=0;      /* Current position in test_string */
  unsigned int unicode_point;  /* Unicode code point for a single character */
  hid_t fid;                   /* ID of file */
  int x;                       /* Temporary variable */
  herr_t ret;                  /* Generic return value */

  /* Output message about test being performed */
  MESSAGE(5, ("Testing UTF-8 Encoding\n"));

  /* Create a random string with length NUM_CHARS */
  HDsrandom((unsigned)HDtime(NULL));

  HDmemset(test_string, 0, sizeof(test_string));
  for(x=0; x<NUM_CHARS; x++)
  {
    /* We need to avoid unprintable characters (codes 0-31) and the
     * . and / characters, since they aren't allowed in path names.
     */
    unicode_point = (HDrandom() % (MAX_CODE_POINT-32)) + 32;
    if(unicode_point != 46 && unicode_point != 47)
      cur_pos = write_char(unicode_point, test_string, cur_pos);
  }

  /* Avoid unlikely case of the null string */
  if(cur_pos == 0)
  {
    test_string[cur_pos] = 'Q';
    cur_pos++;
  }
  test_string[cur_pos]='\0';

  /* Create file */
  fid = H5Fcreate(FILENAME, H5F_ACC_TRUNC, H5P_DEFAULT, H5P_DEFAULT);
  CHECK(fid, FAIL, "H5Fcreate");

  test_fl_string(fid, test_string);
  test_strpad(fid, "abcdefgh");
  test_strpad(fid, test_string);
  test_vl_string(fid, test_string);
  test_objnames(fid, test_string);
  test_attrname(fid, test_string);
  test_compound(fid, test_string);
  test_enum(fid, test_string);
  test_opaque(fid, test_string);

  /* Close file */
  ret = H5Fclose(fid);
  CHECK(ret, FAIL, "H5Fclose");

  /* This function could be useful in debugging if certain strings
   * create errors.
   */
#ifdef DEBUG
  dump_string(test_string);
#endif /* DEBUG */
}

/* cleanup_unicode(void)
 * Delete the file this test created.
 */
void cleanup_unicode(void)
{
    remove(FILENAME);
}