summaryrefslogtreecommitdiffstats
path: root/tools/lib/h5tools_str.c
blob: 82a610017ba898c0b7bd21818a1be92b0f87c384 (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
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
 * 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://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html.  If you do not have     *
 * access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. *
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/*
 * Programmer:  Bill Wendling <wendling@ncsa.uiuc.edu>
 *              Monday, 19. February 2001
 *
 * Purpose: These are string functions for us to use and abuse.
 */
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "H5private.h"
#include "h5tools.h"            /*for h5dump_t structure    */
#include "h5tools_ref.h"
#include "h5tools_str.h"        /*function prototypes       */

/*
 * If REPEAT_VERBOSE is defined then character strings will be printed so
 * that repeated character sequences like "AAAAAAAAAA" are displayed as
 *
 * 	'A' repeates 9 times
 *
 * Otherwise the format is more Perl-like
 *
 * 	'A'*10
 *
 */
#define REPEAT_VERBOSE

/* Variable length string datatype */
#define STR_INIT_LEN    4096    /*initial length            */

static char    *h5tools_escape(char *s, size_t size);
static hbool_t  h5tools_is_zero(const void *_mem, size_t size);

/*-------------------------------------------------------------------------
 * Function:	h5tools_str_close
 *
 * Purpose:	Closes a string by releasing it's memory and setting the size
 *		information to zero.
 *
 * Return:	void
 *
 * Programmer:	Robb Matzke
 *              Monday, April 26, 1999
 *
 * Modifications:
 *
 *-------------------------------------------------------------------------
 */
void
h5tools_str_close(h5tools_str_t *str)
{
    if (str && str->nalloc) {
        free(str->s);
        memset(str, 0, sizeof(h5tools_str_t));
    }
}

/*-------------------------------------------------------------------------
 * Function:	h5tools_str_len
 *
 * Purpose:	Returns the length of the string, not counting the null
 *		terminator.
 *
 * Return:	Success:	Length of string
 *
 *		Failure:	0
 *
 * Programmer:	Robb Matzke
 *              Monday, April 26, 1999
 *
 * Modifications:
 *
 *-------------------------------------------------------------------------
 */
size_t
h5tools_str_len(h5tools_str_t *str)
{
    return str->len;
}

/*-------------------------------------------------------------------------
 * Function:	h5tools_str_append
 *
 * Purpose:	Formats variable arguments according to printf() format
 *		string and appends the result to variable length string STR.
 *
 * Return:	Success:	Pointer to buffer containing result.
 *
 *		Failure:	NULL
 *
 * Programmer:	Robb Matzke
 *              Monday, April 26, 1999
 *
 * Modifications:
 *
 *              Major change:  need to check results of vsnprintf to
 *              handle errors, empty format, and overflows.
 *
 * Programmer:	REMcG Matzke
 *              June 16, 2004
 *
 *-------------------------------------------------------------------------
 */
char *
h5tools_str_append(h5tools_str_t *str/*in,out*/, const char *fmt, ...)
{
    va_list ap;

    va_start(ap, fmt);

    /* Make sure we have some memory into which to print */
    if (!str->s || str->nalloc <= 0) {
	str->nalloc = STR_INIT_LEN;
	str->s = malloc(str->nalloc);
	assert(str->s);
	str->s[0] = '\0';
	str->len = 0;
    }

    if (strlen(fmt) == 0) {
        /* nothing to print */
        va_end(ap);
        return str->s;
    }

     /* Format the arguments and append to the value already in `str' */
     while (1) {
        /* How many bytes available for new value, counting the new NUL */
	size_t avail = str->nalloc - str->len;

	int nchars = HDvsnprintf(str->s + str->len, avail, fmt, ap);

	if (nchars<0) {
            /* failure, such as bad format */
            va_end(ap);
	    return NULL;
        }

	if ((size_t)nchars>=avail ||
	    (0==nchars && (strcmp(fmt,"%s") ))) {
	   /* Truncation return value as documented by C99, or zero return value with either of the
            * following conditions, each of which indicates that the proper C99 return value probably
            *  should have been positive when the format string is
            *  something other than "%s"
            * Alocate at least twice as much space and try again.
            */
	   size_t newsize = MAX(str->len+nchars+1, 2*str->nalloc);
	   assert(newsize > str->nalloc); /*overflow*/
#ifndef H5_HAVE_VSNPRINTF
	   /* If we even made it this far... the HDvsnprintf() clobbered memory: SIGSEGV probable*/
	   abort();
#endif
	   str->s = realloc(str->s, newsize);
	   assert(str->s);
	   str->nalloc = newsize;
	} else {
	   /* Success */
	   str->len += nchars;
	   break;
        }
     }
     va_end(ap);
     return str->s;
}

/*-------------------------------------------------------------------------
 * Function:	h5tools_str_reset
 *
 * Purpose:	Reset the string to the empty value. If no memory is
 *		allocated yet then initialize the h5tools_str_t struct.
 *
 * Return:	Success:	Ptr to the buffer which contains a null
 *				character as the first element.
 *
 *		Failure:	NULL
 *
 * Programmer:	Robb Matzke
 *              Monday, April 26, 1999
 *
 * Modifications:
 *
 *-------------------------------------------------------------------------
 */
char *
h5tools_str_reset(h5tools_str_t *str/*in,out*/)
{
    if (!str->s || str->nalloc <= 0) {
	str->nalloc = STR_INIT_LEN;
	str->s = malloc(str->nalloc);
	assert(str->s);
    }

    str->s[0] = '\0';
    str->len = 0;
    return str->s;
}

/*-------------------------------------------------------------------------
 * Function:	h5tools_str_trunc
 *
 * Purpose:	Truncate a string to be at most SIZE characters.
 *
 * Return:	Success:	Pointer to the string
 *
 *		Failure:	NULL
 *
 * Programmer:	Robb Matzke
 *              Monday, April 26, 1999
 *
 * Modifications:
 *
 *-------------------------------------------------------------------------
 */
char *
h5tools_str_trunc(h5tools_str_t *str/*in,out*/, size_t size)
{
    if (size < str->len) {
	str->len = size;
	str->s[size] = '\0';
    }

    return str->s;
}

/*-------------------------------------------------------------------------
 * Function:	h5tools_str_fmt
 *
 * Purpose:	Reformat a string contents beginning at character START
 *		according to printf format FMT. FMT should contain no format
 *		specifiers except possibly the `%s' variety. For example, if
 *		the input string is `hello' and the format is "<<%s>>" then
 *		the output value will be "<<hello>>".
 *
 * Return:	Success:	A pointer to the resulting string.
 *
 *		Failure:	NULL
 *
 * Programmer:	Robb Matzke
 *              Monday, April 26, 1999
 *
 * Modifications:
 *
 *-------------------------------------------------------------------------
 */
char *
h5tools_str_fmt(h5tools_str_t *str/*in,out*/, size_t start, const char *fmt)
{
    char _temp[1024], *temp = _temp;

    /* If the format string is simply "%s" then don't bother doing anything */
    if (!strcmp(fmt, "%s"))
        return str->s;

    /*
     * Save the input value if there is a `%' anywhere in FMT.  Otherwise
     * don't bother because we don't need a temporary copy.
     */
    if (strchr(fmt, '%')) {
        if (str->len - start + 1 > sizeof(_temp)) {
            temp = malloc(str->len-start + 1);
            assert(temp);
        }

        strcpy(temp, str->s + start);
    }

    /* Reset the output string and append a formatted version */
    h5tools_str_trunc(str, start);
    h5tools_str_append(str, fmt, temp);

    /* Free the temp buffer if we allocated one */
    if (temp != _temp)
        free(temp);

    return str->s;
}

/*-------------------------------------------------------------------------
 * Function:	h5tools_str_prefix
 *
 * Purpose:	Renders the line prefix value into string STR.
 *
 * Return:	Success:	Pointer to the prefix.
 *
 * 		Failure:	NULL
 *
 * Programmer:	Robb Matzke
 *              Thursday, July 23, 1998
 *
 * Modifications:
 *
 *-------------------------------------------------------------------------
 */
char *
h5tools_str_prefix(h5tools_str_t *str/*in,out*/, const h5dump_t *info,
                   hsize_t elmtno, int ndims, hsize_t min_idx[],
                   hsize_t max_idx[], h5tools_context_t *ctx)
{
    hsize_t p_prod[H5S_MAX_RANK];
    hsize_t i = 0;
    hsize_t curr_pos=elmtno;

    h5tools_str_reset(str);

    if (ndims > 0) {
        /*
         * Calculate the number of elements represented by a unit change in a
         * certain index position.
         */
        for (i = ndims - 1, p_prod[ndims - 1] = 1; i > 0; --i)
            p_prod[i - 1] = (max_idx[i] - min_idx[i]) * p_prod[i];

        for ( i = 0; i < (hsize_t)ndims; i++)
        {
         ctx->pos[i] = curr_pos/ctx->acc[i];
         curr_pos -= ctx->acc[i]*ctx->pos[i];
        }
        assert( curr_pos == 0 );

        /* Print the index values */
        for (i = 0; i < (hsize_t)ndims; i++) {
            if (i)
                h5tools_str_append(str, "%s", OPT(info->idx_sep, ","));

            h5tools_str_append(str, OPT(info->idx_n_fmt, "%lu"),
                               (unsigned long)ctx->pos[i]);
        }
    } else {
        /* Scalar */
        h5tools_str_append(str, OPT(info->idx_n_fmt, "%lu"), (unsigned long)0);
    }

    /* Add prefix and suffix to the index */
    return h5tools_str_fmt(str, 0, OPT(info->idx_fmt, "%s: "));
}

/*-------------------------------------------------------------------------
 * Function:	h5tools_str_dump_region
 *
 * Purpose:	Prints information about a dataspace region by appending
 *		the information to the specified string.
 *
 * Return:	Success:	0
 *
 *		Failure:	NULL
 *
 * Programmer:	Robb Matzke
 *              Monday, June  7, 1999
 *
 * Modifications:
 *
 *-------------------------------------------------------------------------
 */
int
h5tools_str_dump_region(h5tools_str_t *str, hid_t region, const h5dump_t *info)
{
    hssize_t	nblocks, npoints;
    hsize_t     alloc_size;
    hsize_t    *ptdata;
    int		ndims = H5Sget_simple_extent_ndims(region);

    /*
     * These two functions fail if the region does not have blocks or points,
     * respectively. They do not currently know how to translate from one to
     * the other.
     */
    H5E_BEGIN_TRY {
        nblocks = H5Sget_select_hyper_nblocks(region);
        npoints = H5Sget_select_elem_npoints(region);
    } H5E_END_TRY;

    h5tools_str_append(str, "{");

    /* Print block information */
    if (nblocks > 0) {
        int i;

        alloc_size = nblocks * ndims * 2 * sizeof(ptdata[0]);
        assert(alloc_size == (hsize_t)((size_t)alloc_size)); /*check for overflow*/
        ptdata = malloc((size_t)alloc_size);
        H5_CHECK_OVERFLOW(nblocks, hssize_t, hsize_t);
        H5Sget_select_hyper_blocklist(region, (hsize_t)0, (hsize_t)nblocks, ptdata);

        for (i = 0; i < nblocks; i++) {
            int j;

            h5tools_str_append(str, info->dset_blockformat_pre,
                               i ? "," OPTIONAL_LINE_BREAK " " : "",
                               (unsigned long)i);

            /* Start coordinates and opposite corner */
            for (j = 0; j < ndims; j++)
                h5tools_str_append(str, "%s%lu", j ? "," : "(",
                                   (unsigned long)ptdata[i * 2 * ndims + j]);

            for (j = 0; j < ndims; j++)
                h5tools_str_append(str, "%s%lu", j ? "," : ")-(",
                                  (unsigned long)ptdata[i * 2 * ndims + j + ndims]);

            h5tools_str_append(str, ")");
        }

        free(ptdata);
    }

    /* Print point information */
    if (npoints > 0) {
        int i;

        alloc_size = npoints * ndims * sizeof(ptdata[0]);
        assert(alloc_size == (hsize_t)((size_t)alloc_size)); /*check for overflow*/
        ptdata = malloc((size_t)alloc_size);
        H5_CHECK_OVERFLOW(npoints,hssize_t,hsize_t);
        H5Sget_select_elem_pointlist(region, (hsize_t)0, (hsize_t)npoints, ptdata);

        for (i = 0; i < npoints; i++) {
            int j;

            h5tools_str_append(str, info->dset_ptformat_pre ,
                               i ? "," OPTIONAL_LINE_BREAK " " : "",
                               (unsigned long)i);

            for (j = 0; j < ndims; j++)
                h5tools_str_append(str, "%s%lu", j ? "," : "(",
                                   (unsigned long)(ptdata[i * ndims + j]));

            h5tools_str_append(str, ")");
        }

        free(ptdata);
    }

    h5tools_str_append(str, "}");
    return 0;
}

/*-------------------------------------------------------------------------
 * Function:	h5tools_print_char
 *
 * Purpose:	Shove a character into the STR.
 *
 * Return:	Nothing
 *
 * Programmer:	Bill Wendling
 *              Tuesday, 20. February 2001
 *
 * Modifications:
 *
 *-------------------------------------------------------------------------
 */
void
h5tools_print_char(h5tools_str_t *str, const h5dump_t *info, unsigned char ch)
{
    if (info->str_locale == ESCAPE_HTML) {
        if (ch <= ' ' || ch > '~')
            h5tools_str_append(str, "%%%02x", ch);
        else
            h5tools_str_append(str, "%c", (char)ch);
    } else {
        switch (ch) {
        case '"':
           if (!info->do_escape)
            h5tools_str_append(str, "\"");
           else
            h5tools_str_append(str, "\\\"");
            break;
        case '\\':
          if (!info->do_escape)
            h5tools_str_append(str, "\\");
          else
            h5tools_str_append(str, "\\\\");
            break;
        case '\b':
           if (!info->do_escape)
            h5tools_str_append(str, "\b");
           else
            h5tools_str_append(str, "\\b");
            break;
        case '\f':
           if (!info->do_escape)
             h5tools_str_append(str, "\f");
           else
             h5tools_str_append(str, "\\f");
            break;
        case '\n':
           if (!info->do_escape) {
             h5tools_str_append(str, "\n");
             h5tools_str_append(str, "           ");
           }
           else
            h5tools_str_append(str, "\\n");
         break;
        case '\r':
         if (!info->do_escape) {
           h5tools_str_append(str, "\r");
           h5tools_str_append(str, "           ");
         }
          else
            h5tools_str_append(str, "\\r");
            break;
        case '\t':
          if (!info->do_escape)
           h5tools_str_append(str, "\t");
          else
           h5tools_str_append(str, "\\t");
            break;
        default:
            if (isprint(ch))
                h5tools_str_append(str, "%c", (char)ch);
            else
                h5tools_str_append(str, "\\%03o", ch);

            break;
        }
    }
}


/*-------------------------------------------------------------------------
 * Function:	h5tools_str_sprint
 *
 * Purpose:	Renders the value pointed to by VP of type TYPE into variable
 *		length string STR.
 *
 * Return:	A pointer to memory containing the result or NULL on error.
 *
 * Programmer:	Robb Matzke
 *              Thursday, July 23, 1998
 *
 * Modifications:
 * 		Robb Matzke, 1999-04-26
 *		Made this function safe from overflow problems by allowing it
 *		to reallocate the output string.
 *
 * 		Robb Matzke, 1999-06-04
 *		Added support for object references. The new `container'
 *		argument is the dataset where the reference came from.
 *
 * 		Robb Matzke, 1999-06-07
 *		Added support for printing raw data. If info->raw is non-zero
 *		then data is printed in hexadecimal format.
 *
 *              Robb Matzke, 2003-01-10
 *              Binary output format is dd:dd:... instead of 0xdddd... so it
 *              doesn't look like a hexadecimal integer, and thus users will
 *              be less likely to complain that HDF5 didn't properly byte
 *              swap their data during type conversion.
 *
 *              Robb Matzke, LLNL, 2003-06-05
 *              If TYPE is a variable length string then the pointer to
 *              the value to pring (VP) is a pointer to a `char*'.
 *-------------------------------------------------------------------------
 */
char *
h5tools_str_sprint(h5tools_str_t *str, const h5dump_t *info, hid_t container,
                   hid_t type, void *vp, h5tools_context_t *ctx)
{
    size_t         n, offset, size=0, nelmts, start;
    char          *name;
    unsigned char *ucp_vp = (unsigned char *)vp;
    char          *cp_vp = (char *)vp;
    hid_t          memb, obj, region;
    unsigned       nmembs;
    int	           otype;
    static char    fmt_llong[8], fmt_ullong[8];
    H5T_str_t      pad;
    H5G_stat_t     sb;

    /*
     * some tempvars to store the value before we append it to the string to
     * get rid of the memory alignment problem
     */
    double             tempdouble;
    float              tempfloat;
    unsigned long_long tempullong;
    long_long          templlong;
    unsigned long      tempulong;
    long               templong;
    unsigned int       tempuint;
    int                tempint;
    unsigned short     tempushort;
    short              tempshort;

    /* Build default formats for long long types */
    if (!fmt_llong[0]) {
        sprintf(fmt_llong, "%%%sd", H5_PRINTF_LL_WIDTH);
        sprintf(fmt_ullong, "%%%su", H5_PRINTF_LL_WIDTH);
    }

    /* Append value depending on data type */
    start = h5tools_str_len(str);

    if (info->raw) {
        size_t i;
        n = H5Tget_size(type);
        if (1==n) {
            h5tools_str_append(str, OPT(info->fmt_raw, "0x%02x"), ucp_vp[0]);
        } else {
            for (i = 0; i < n; i++) {
                if (i) h5tools_str_append(str, ":");
            h5tools_str_append(str, OPT(info->fmt_raw, "%02x"), ucp_vp[i]);
            }
        }
    } else if (H5Tequal(type, H5T_NATIVE_FLOAT)) {
        memcpy(&tempfloat, vp, sizeof(float));
        h5tools_str_append(str, OPT(info->fmt_float, "%g"), tempfloat);
    } else if (H5Tequal(type, H5T_NATIVE_DOUBLE)) {
        memcpy(&tempdouble, vp, sizeof(double));
        h5tools_str_append(str, OPT(info->fmt_double, "%g"), tempdouble);
    } else if (info->ascii && (H5Tequal(type, H5T_NATIVE_SCHAR) ||
                               H5Tequal(type, H5T_NATIVE_UCHAR))) {
        h5tools_print_char(str, info, (unsigned char)(*ucp_vp));
    } else if (H5T_STRING == H5Tget_class(type)) {
        unsigned int i;
        char quote = '\0';
        char *s;

        quote = '\0';
        if(H5Tis_variable_str(type)) {
            /* cp_vp is the pointer into the struct where a `char*' is stored. So we have
             * to dereference the pointer to get the `char*' to pass to HDstrlen(). */
            s = *(char**)cp_vp;
            if(s!=NULL)
                size = HDstrlen(s);
        } else {
            s = cp_vp;
            size = H5Tget_size(type);
        }
        pad = H5Tget_strpad(type);

        /* Check for NULL pointer for string */
        if(s==NULL) {
            h5tools_str_append(str, "NULL");
        }
        else {
            for (i=0; i<size && (s[i] || pad!=H5T_STR_NULLTERM); i++) {
                int j = 1;

                /*
                 * Count how many times the next character repeats. If the
                 * threshold is zero then that means it can repeat any number
                 * of times.
                 */
                if (info->str_repeat > 0)
                    while (i + j < size && s[i] == s[i + j])
                        j++;

                /*
                 * Print the opening quote.  If the repeat count is high enough to
                 * warrant printing the number of repeats instead of enumerating
                 * the characters, then make sure the character to be repeated is
                 * in it's own quote.
                 */
                if (info->str_repeat > 0 && j > info->str_repeat) {
                    if (quote)
                        h5tools_str_append(str, "%c", quote);

                    quote = '\'';
                    h5tools_str_append(str, "%s%c", i ? " " : "", quote);
                } else if (!quote) {
                    quote = '"';
                    h5tools_str_append(str, "%s%c", i ? " " : "", quote);
                }

                /* Print the character */
                h5tools_print_char(str, info, (unsigned char)(s[i]));

                /* Print the repeat count */
                if (info->str_repeat && j > info->str_repeat) {
#ifdef REPEAT_VERBOSE
                    h5tools_str_append(str, "%c repeats %d times", quote, j - 1);
#else
                    h5tools_str_append(str, "%c*%d", quote, j - 1);
#endif  /* REPEAT_VERBOSE */
                    quote = '\0';
                    i += j - 1;
                }

            }

            if (quote)
                h5tools_str_append(str, "%c", quote);

            if (i == 0)
                /*empty string*/
                h5tools_str_append(str, "\"\"");
        } /* end else */
    } else if (H5Tequal(type, H5T_NATIVE_INT)) {
        memcpy(&tempint, vp, sizeof(int));
        h5tools_str_append(str, OPT(info->fmt_int, "%d"), tempint);
    } else if (H5Tequal(type, H5T_NATIVE_UINT)) {
        memcpy(&tempuint, vp, sizeof(unsigned int));
        h5tools_str_append(str, OPT(info->fmt_uint, "%u"), tempuint);
    } else if (H5Tequal(type, H5T_NATIVE_SCHAR)) {
        h5tools_str_append(str, OPT(info->fmt_schar, "%d"), *cp_vp);
    } else if (H5Tequal(type, H5T_NATIVE_UCHAR)) {
        h5tools_str_append(str, OPT(info->fmt_uchar, "%u"), *ucp_vp);
    } else if (H5Tequal(type, H5T_NATIVE_SHORT)) {
        memcpy(&tempshort, vp, sizeof(short));
        h5tools_str_append(str, OPT(info->fmt_short, "%d"), tempshort);
    } else if (H5Tequal(type, H5T_NATIVE_USHORT)) {
        memcpy(&tempushort, vp, sizeof(unsigned short));
        h5tools_str_append(str, OPT(info->fmt_ushort, "%u"), tempushort);
    } else if (H5Tequal(type, H5T_NATIVE_LONG)) {
        memcpy(&templong, vp, sizeof(long));
        h5tools_str_append(str, OPT(info->fmt_long, "%ld"), templong);
    } else if (H5Tequal(type, H5T_NATIVE_ULONG)) {
        memcpy(&tempulong, vp, sizeof(unsigned long));
        h5tools_str_append(str, OPT(info->fmt_ulong, "%lu"), tempulong);
    } else if (H5Tequal(type, H5T_NATIVE_LLONG)) {
        memcpy(&templlong, vp, sizeof(long_long));
        h5tools_str_append(str, OPT(info->fmt_llong, fmt_llong), templlong);
    } else if (H5Tequal(type, H5T_NATIVE_ULLONG)) {
        memcpy(&tempullong, vp, sizeof(unsigned long_long));
        h5tools_str_append(str, OPT(info->fmt_ullong, fmt_ullong), tempullong);
    } else if (H5Tequal(type, H5T_NATIVE_HSSIZE)) {
        if (sizeof(hssize_t) == sizeof(int)) {
            memcpy(&tempint, vp, sizeof(int));
            h5tools_str_append(str, OPT(info->fmt_int, "%d"), tempint);
        } else if (sizeof(hssize_t) == sizeof(long)) {
            memcpy(&templong, vp, sizeof(long));
            h5tools_str_append(str, OPT(info->fmt_long, "%ld"), templong);
        } else {
            memcpy(&templlong, vp, sizeof(long_long));
            h5tools_str_append(str, OPT(info->fmt_llong, fmt_llong), templlong);
        }
    } else if (H5Tequal(type, H5T_NATIVE_HSIZE)) {
        if (sizeof(hsize_t) == sizeof(int)) {
            memcpy(&tempuint, vp, sizeof(unsigned int));
            h5tools_str_append(str, OPT(info->fmt_uint, "%u"), tempuint);
        } else if (sizeof(hsize_t) == sizeof(long)) {
            memcpy(&tempulong, vp, sizeof(long));
            h5tools_str_append(str, OPT(info->fmt_ulong, "%lu"), tempulong);
        } else {
            memcpy(&tempullong, vp, sizeof(unsigned long_long));
            h5tools_str_append(str, OPT(info->fmt_ullong, fmt_ullong), tempullong);
        }
    } else if (H5Tget_class(type) == H5T_COMPOUND) {
        unsigned j;

        nmembs = H5Tget_nmembers(type);
        h5tools_str_append(str, "%s", OPT(info->cmpd_pre, "{"));

        for (j = 0; j < nmembs; j++) {
            if (j)
                h5tools_str_append(str, "%s", OPT(info->cmpd_sep, ", " OPTIONAL_LINE_BREAK));

            /* RPM 2000-10-31
             * If the previous character is a line-feed (which is true when
             * h5dump is running) then insert some white space for
             * indentation. Be warned that column number calculations will be
             * incorrect and that object indices at the beginning of the line
             * will be missing (h5dump doesn't display them anyway).  */
            if (ctx->indent_level >= 0 && str->len && str->s[str->len - 1] == '\n') {
                int x;

                h5tools_str_append(str, OPT(info->line_pre, ""), "");

                for (x = 0; x < ctx->indent_level + 1; x++)
                    h5tools_str_append(str, "%s", OPT(info->line_indent, ""));
            }

            /* The name */
            name = H5Tget_member_name(type, j);
            h5tools_str_append(str, OPT(info->cmpd_name, ""), name);
            free(name);

            /* The value */
            offset = H5Tget_member_offset(type, j);
            memb = H5Tget_member_type(type, j);

            ctx->indent_level++;
            h5tools_str_sprint(str, info, container, memb, cp_vp + offset , ctx);
            ctx->indent_level--;

            H5Tclose(memb);
        }

        /* RPM 2000-10-31
         * If the previous character is a line feed (which is true when
         * h5dump is running) then insert some white space for indentation.
         * Be warned that column number calculations will be incorrect and
         * that object indices at the beginning of the line will be missing
         * (h5dump doesn't display them anyway). */
        h5tools_str_append(str, "%s", OPT(info->cmpd_end, ""));

        if (ctx->indent_level >= 0 && str->len && str->s[str->len - 1] == '\n') {
            int x;

            h5tools_str_append(str, OPT(info->line_pre, ""), "");

            for (x = 0; x < ctx->indent_level; x++)
                h5tools_str_append(str, "%s", OPT(info->line_indent, ""));
        }

        h5tools_str_append(str, "%s", OPT(info->cmpd_suf, "}"));
    } else if (H5Tget_class(type) == H5T_ENUM) {
        char enum_name[1024];

        if (H5Tenum_nameof(type, vp, enum_name, sizeof enum_name) >= 0) {
            h5tools_str_append(str, h5tools_escape(enum_name, sizeof(enum_name)));
        } else {
            size_t i;
            n = H5Tget_size(type);
            if (1==n) {
                h5tools_str_append(str, "0x%02x", ucp_vp[0]);
            } else {
            for (i = 0; i < n; i++)
                    h5tools_str_append(str, "%s%02x", i?":":"", ucp_vp[i]);
            }
        }
    } else if (H5Tequal(type, H5T_STD_REF_DSETREG)) {
        /*
         * Dataset region reference -- show the type and OID of the referenced
         * object, but we are unable to show the region yet because there
         * isn't enough support in the data space layer.  - rpm 19990604
         */
        if (h5tools_is_zero(vp, H5Tget_size(type))) {
            h5tools_str_append(str, "NULL");
        } else {
            obj = H5Rdereference(container, H5R_DATASET_REGION, vp);
            region = H5Rget_region(container, H5R_DATASET_REGION, vp);
            H5Gget_objinfo(obj, ".", FALSE, &sb);

            if (info->dset_hidefileno)
                h5tools_str_append(str, info->dset_format, sb.objno);
            else
                h5tools_str_append(str, info->dset_format, sb.fileno, sb.objno);

            h5tools_str_dump_region(str, region, info);
            H5Sclose(region);
            H5Dclose(obj);
        }
    } else if (H5Tequal(type, H5T_STD_REF_OBJ)) {
        /*
         * Object references -- show the type and OID of the referenced
         * object.
         */
        if (h5tools_is_zero(vp, H5Tget_size(type))) {
            h5tools_str_append(str, "NULL");
        } else {
            const char *path;
            otype = H5Rget_obj_type(container, H5R_OBJECT, vp);
            obj = H5Rdereference(container, H5R_OBJECT, vp);
            H5Gget_objinfo(obj, ".", FALSE, &sb);

            /* Print object type and close object */
            switch (otype) {
                case H5G_GROUP:
                    h5tools_str_append(str, GROUPNAME);
                    H5Gclose(obj);
                    break;
                case H5G_DATASET:
                    h5tools_str_append(str, DATASET);
                    H5Dclose(obj);
                    break;
                case H5G_TYPE:
                    h5tools_str_append(str, DATATYPE);
                    H5Tclose(obj);
                    break;
                default:
                    h5tools_str_append(str, "%u-", otype);
                    break;
            }

            /* Print OID */
            if (info->obj_hidefileno)
                h5tools_str_append(str, info->obj_format, sb.objno);
            else
                h5tools_str_append(str, info->obj_format, sb.fileno,sb.objno);

             /* Print name */
            path = lookup_ref_path(*(haddr_t *)vp);
            if (path) {
             h5tools_str_append(str, " ");
             h5tools_str_append(str, path);
             h5tools_str_append(str, " ");
            }
        }
    } else if (H5Tget_class(type) == H5T_ARRAY) {
        int k, ndims;
        hsize_t	i, dims[H5S_MAX_RANK],temp_nelmts;

        /* Get the array's base datatype for each element */
        memb = H5Tget_super(type);
        size = H5Tget_size(memb);
        ndims = H5Tget_array_ndims(type);
        H5Tget_array_dims(type, dims, NULL);
        assert(ndims >= 1 && ndims <= H5S_MAX_RANK);

        /* Calculate the number of array elements */
        for (k = 0, nelmts = 1; k < ndims; k++){
			temp_nelmts = nelmts;
			temp_nelmts *= dims[k];
			assert(temp_nelmts==(hsize_t)((size_t)temp_nelmts));
            nelmts = (size_t)temp_nelmts;
		}
        /* Print the opening bracket */
        h5tools_str_append(str, "%s", OPT(info->arr_pre, "["));

        for (i = 0; i < nelmts; i++) {
            if (i)
                h5tools_str_append(str, "%s",
                          OPT(info->arr_sep, "," OPTIONAL_LINE_BREAK));

            if (info->arr_linebreak && i && i % dims[ndims - 1] == 0) {
                int x;

                h5tools_str_append(str, "%s", "\n");

                /*need to indent some more here*/
                if (ctx->indent_level >= 0 )
                {
                 if (!info->pindex)
                  h5tools_str_append(str, "%s", OPT(info->line_pre, ""));
                }

                for (x = 0; x < ctx->indent_level + 1; x++)
                    h5tools_str_append(str,"%s",OPT(info->line_indent,""));
            } /* end if */
            else if(i && info->arr_sep)
                h5tools_str_append(str, " ");

            ctx->indent_level++;

            /* Dump the array element */
            h5tools_str_sprint(str, info, container, memb, cp_vp + i * size, ctx);

            ctx->indent_level--;
        } /* end for */

        /* Print the closing bracket */
 	h5tools_str_append(str, "%s", OPT(info->arr_suf, "]"));
        H5Tclose(memb);
    } else if (H5Tget_class(type) == H5T_VLEN) {
        unsigned int i;

        /* Get the VL sequences's base datatype for each element */
        memb = H5Tget_super(type);
        size = H5Tget_size(memb);

        /* Print the opening bracket */
        h5tools_str_append(str, "%s", OPT(info->vlen_pre, "("));

        /* Get the number of sequence elements */
        nelmts = ((hvl_t *)cp_vp)->len;

        for (i = 0; i < nelmts; i++) {
            if (i)
                h5tools_str_append(str, "%s",
                          OPT(info->vlen_sep, "," OPTIONAL_LINE_BREAK));

#ifdef LATER
/* Need to fix so VL data breaks at correct location on end of line -QAK */
            if (info->arr_linebreak && h5tools_str_len(str)>=info->line_ncols) {
                int x;

                h5tools_str_append(str, "%s", "\n");

                /* need to indent some more here */
                if (ctx->indent_level >= 0)
                    h5tools_str_append(str, "%s", OPT(info->line_pre, ""));

                for (x = 0; x < ctx->indent_level + 1; x++)
                    h5tools_str_append(str,"%s",OPT(info->line_indent,""));
            } /* end if */
#endif /* LATER */

            ctx->indent_level++;

            /* Dump the array element */
            h5tools_str_sprint(str, info, container, memb,
                           ((char *)(((hvl_t *)cp_vp)->p)) + i * size, ctx);

            ctx->indent_level--;
        } /* end for */

        h5tools_str_append(str, "%s", OPT(info->vlen_suf, ")"));
        H5Tclose(memb);
    } else {
        /* All other types get printed as hexadecimal */
        size_t i;
        n = H5Tget_size(type);
        if (1==n) {
            h5tools_str_append(str, "0x%02x", ucp_vp[0]);
        } else {
            for (i = 0; i < n; i++)
                h5tools_str_append(str, "%s%02x", i?":":"", ucp_vp[i]);
        }
    }

    return h5tools_str_fmt(str, start, OPT(info->elmt_fmt, "%s"));
}

/*-------------------------------------------------------------------------
 * Function:	h5tools_escape
 *
 * Purpose:	Changes all "funny" characters in S into standard C escape
 *		sequences.
 *
 * Return:	Success:	S
 *
 *		Failure:	NULL if the buffer would overflow. The
 *				buffer has as many left-to-right escapes as
 *				possible before overflow would have happened.
 *
 * Programmer:	Robb Matzke
 *              Monday, April 26, 1999
 *
 * Modifications:
 *
 *-------------------------------------------------------------------------
 */
static char *
h5tools_escape(char *s/*in,out*/, size_t size)
{
    register size_t i;
    size_t n = strlen(s);
    const char *escape;
    char octal[8];

    for (i = 0; i < n; i++) {
	switch (s[i]) {
	case '\'':
	    escape = "\\\'";
	    break;
	case '\"':
	    escape = "\\\"";
	    break;
	case '\\':
	    escape = "\\\\";
	    break;
	case '\?':
	    escape = "\\\?";
	    break;
	case '\a':
	    escape = "\\a";
	    break;
	case '\b':
	    escape = "\\b";
	    break;
	case '\f':
	    escape = "\\f";
	    break;
	case '\n':
	    escape = "\\n";
	    break;
	case '\r':
	    escape = "\\r";
	    break;
	case '\t':
	    escape = "\\t";
	    break;
	case '\v':
	    escape = "\\v";
	    break;
	default:
	    if (!isprint(s[i])) {
		sprintf(octal, "\\%03o", (unsigned char)s[i]);
		escape = octal;
	    } else {
		escape = NULL;
	    }

	    break;
	}

	if (escape) {
	    size_t esc_size = strlen(escape);

	    if (n + esc_size + 1 > size)
		/*would overflow*/
		return NULL;

	    memmove(s + i + esc_size, s + i + 1, n - i); /*make room*/
	    memcpy(s + i, escape, esc_size); /*insert*/
	    n += esc_size - 1;  /* adjust total string size */
	    i += esc_size;      /* adjust string position */
	}
    }

    return s;
}

/*-------------------------------------------------------------------------
 * Function:	h5tools_is_zero
 *
 * Purpose:	Determines if memory is initialized to all zero bytes.
 *
 * Return:	TRUE if all bytes are zero; FALSE otherwise
 *
 * Programmer:	Robb Matzke
 *              Monday, June  7, 1999
 *
 * Modifications:
 *
 *-------------------------------------------------------------------------
 */
static hbool_t
h5tools_is_zero(const void *_mem, size_t size)
{
    const unsigned char *mem = (const unsigned char *)_mem;

    while (size-- > 0)
	if (mem[size])
	    return FALSE;

    return TRUE;
}