summaryrefslogtreecommitdiffstats
path: root/src/H5Oattr.c
blob: 2671b38fb5e2a64283b301fdb8f856ae01a2fdd7 (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
/****************************************************************************
* NCSA HDF                                                                 *
* Software Development Group                                               *
* National Center for Supercomputing Applications                          *
* University of Illinois at Urbana-Champaign                               *
* 605 E. Springfield, Champaign IL 61820                                   *
*                                                                          *
* For conditions of distribution and use, see the accompanying             *
* hdf/COPYING file.                                                        *
*                                                                          *
****************************************************************************/

#ifdef RCSID
static char             RcsId[] = "@(#)$Revision$";
#endif

/* $Id$ */

#define H5A_PACKAGE             /*prevent warning from including H5Tpkg.h */

#include <H5private.h>
#include <H5Eprivate.h>
#include <H5Gprivate.h>
#include <H5MMprivate.h>
#include <H5Oprivate.h>
#include <H5Apkg.h>

#define PABLO_MASK      H5O_attr_mask

/* PRIVATE PROTOTYPES */
static herr_t H5O_attr_encode (H5F_t *f, uint8 *p, const void *mesg);
static void *H5O_attr_decode (H5F_t *f, const uint8 *p, H5HG_t *hobj);
static void *H5O_attr_copy (const void *_mesg, void *_dest);
static size_t H5O_attr_size (H5F_t *f, const void *_mesg);
static herr_t H5O_attr_reset (void *_mesg);
static herr_t H5O_attr_debug (H5F_t *f, const void *_mesg,
			       FILE * stream, intn indent, intn fwidth);

/* This message derives from H5O */
const H5O_class_t H5O_ATTR[1] = {{
    H5O_ATTR_ID,		/* message id number            */
    "attribute",		/* message name for debugging   */
    sizeof(H5A_t),		/* native message size          */
    H5O_attr_decode,	/* decode message               */
    H5O_attr_encode,	/* encode message               */
    H5O_attr_copy,		/* copy the native value        */
    H5O_attr_size,		/* size of raw message          */
    H5O_attr_reset,		/* reset method                 */
    NULL,		/* no share method (currently)	        */
    H5O_attr_debug,		/* debug the message            */
}};

/* Interface initialization */
static hbool_t          interface_initialize_g = FALSE;
#define INTERFACE_INIT  NULL

/*--------------------------------------------------------------------------
 NAME
    H5O_attr_decode
 PURPOSE
    Decode a attribute message and return a pointer to a memory struct
        with the decoded information
 USAGE
    void *H5O_attr_decode(f, raw_size, p)
        H5F_t *f;               IN: pointer to the HDF5 file struct
        size_t raw_size;        IN: size of the raw information buffer
        const uint8 *p;         IN: the raw information buffer
 RETURNS
    Pointer to the new message in native order on success, NULL on failure
 DESCRIPTION
        This function decodes the "raw" disk form of a attribute message
    into a struct in memory native format.  The struct is allocated within this
    function using malloc() and is returned to the caller.
--------------------------------------------------------------------------*/
static void *
H5O_attr_decode(H5F_t *f, const uint8 *p, H5HG_t __unused__ *hobj)
{
    H5A_t                  *attr = NULL;
	H5S_simple_t	*simple;		/*simple dimensionality information  */
    size_t          name_len;   /* Attribute name length */

    FUNC_ENTER(H5O_attr_decode, NULL);

    /* check args */
    assert(f);
    assert(p);

    attr = H5MM_xcalloc(1, sizeof(H5A_t));

    /* Decode and store the name */
    UINT16DECODE(p, name_len);
    attr->name=H5MM_xmalloc(name_len+1);
    HDmemcpy(attr->name,p,name_len);
    attr->name[name_len]='\0';
    p+=name_len;    /* advance the memory pointer */

    /* decode the attribute datatype */
    if((attr->dt=(H5O_DTYPE[0].decode)(f,p,NULL))==NULL) {
        HRETURN_ERROR(H5E_ATTR, H5E_CANTDECODE, NULL,
                      "can't decode attribute datatype");
    }
    attr->dt_size=(H5O_DTYPE[0].raw_size)(f,attr->dt);
    p+=attr->dt_size;

    /* decode the attribute dataspace */
    attr->ds = H5MM_xcalloc(1, sizeof(H5S_t));
    if((simple=(H5O_SDSPACE[0].decode)(f,p,NULL))!=NULL) {
        attr->ds->type = H5S_SIMPLE;
        HDmemcpy(&(attr->ds->u.simple),simple, sizeof(H5S_simple_t));
        H5MM_xfree(simple);
    } else {
        attr->ds->type = H5S_SCALAR;
    } /* end else */
    attr->ds_size=(H5O_SDSPACE[0].raw_size)(f,&(attr->ds->u.simple));
    p+=attr->ds_size;

    /* Compute the size of the data */
    attr->data_size=H5S_get_npoints(attr->ds)*H5T_get_size(attr->dt);

    /* Go get the data */
    attr->data = H5MM_xmalloc(attr->data_size);
    HDmemcpy(attr->data,p,attr->data_size);

    /* Indicate that the fill values aren't to be written out */
    attr->initialized=1;
    
#ifdef LOTSLATER
    if (hobj) {
        attr->sh_heap = *hobj;
        attr->sh_file = f;
    }
#endif 

    FUNC_LEAVE(attr);
}

/*--------------------------------------------------------------------------
 NAME
    H5O_attr_encode
 PURPOSE
    Encode a simple attribute message 
 USAGE
    herr_t H5O_attr_encode(f, raw_size, p, mesg)
        H5F_t *f;         IN: pointer to the HDF5 file struct
        const uint8 *p;         IN: the raw information buffer
        const void *mesg;       IN: Pointer to the simple datatype struct
 RETURNS
    SUCCEED/FAIL
 DESCRIPTION
        This function encodes the native memory form of the attribute
    message in the "raw" disk form.
--------------------------------------------------------------------------*/
static herr_t
H5O_attr_encode(H5F_t *f, uint8 *p, const void *mesg)
{
    const H5A_t    *attr = (const H5A_t *) mesg;
    size_t          name_len;   /* Attribute name length */

    FUNC_ENTER(H5O_attr_encode, FAIL);

    /* check args */
    assert(f);
    assert(p);
    assert(attr);

    /* encode the attribute name */
    name_len=HDstrlen(attr->name);
    UINT16ENCODE(p, name_len);
    HDmemcpy(p,attr->name,name_len);
    p+=name_len;

    /* encode the attribute datatype */
    if((H5O_DTYPE[0].encode)(f,p,attr->dt)<0) {
        HRETURN_ERROR(H5E_ATTR, H5E_CANTENCODE, FAIL,
                      "can't encode attribute datatype");
    }
    p+=attr->dt_size;

    /* encode the attribute dataspace */
    if((H5O_SDSPACE[0].encode)(f,p,&(attr->ds->u.simple))<0) {
        HRETURN_ERROR(H5E_ATTR, H5E_CANTENCODE, FAIL,
                      "can't encode attribute dataspace");
    }
    p+=attr->ds_size;
    
    /* Store attribute data */
    HDmemcpy(p,attr->data,attr->data_size);

    FUNC_LEAVE(SUCCEED);
}

/*--------------------------------------------------------------------------
 NAME
    H5O_attr_copy
 PURPOSE
    Copies a message from MESG to DEST, allocating DEST if necessary.
 USAGE
    void *H5O_attr_copy(mesg, dest)
        const void *mesg;       IN: Pointer to the source attribute struct 
        const void *dest;       IN: Pointer to the destination attribute struct 
 RETURNS
    Pointer to DEST on success, NULL on failure
 DESCRIPTION
        This function copies a native (memory) attribute message,
    allocating the destination structure if necessary.
--------------------------------------------------------------------------*/
static void            *
H5O_attr_copy(const void *_src, void *_dst)
{
    const H5A_t            *src = (const H5A_t *) _src;
    H5A_t                  *dst = NULL;

    FUNC_ENTER(H5O_attr_copy, NULL);

    /* check args */
    assert(src);

    /* copy */
    if (NULL == (dst = H5A_copy(src))) {
        HRETURN_ERROR(H5E_ATTR, H5E_CANTINIT, NULL, "can't copy attribute");
    }
    /* was result already allocated? */
    if (_dst) {
        *((H5A_t *) _dst) = *dst;
        H5MM_xfree(dst);
        dst = (H5A_t *) _dst;
    }
    FUNC_LEAVE((void *) dst);
}

/*--------------------------------------------------------------------------
 NAME
    H5O_attr_size
 PURPOSE
    Return the raw message size in bytes
 USAGE
    size_t H5O_attr_size(f, mesg)
        H5F_t *f;         IN: pointer to the HDF5 file struct
        const void *mesg;     IN: Pointer to the source attribute struct
 RETURNS
    Size of message on success, 0 on failure
 DESCRIPTION
        This function returns the size of the raw attribute message on
    success.  (Not counting the message type or size fields, only the data
    portion of the message).  It doesn't take into account alignment.
--------------------------------------------------------------------------*/
static size_t
H5O_attr_size(H5F_t __unused__ *f, const void *mesg)
{
    size_t                  ret_value = 0;
    const H5A_t            *attr = (const H5A_t *) mesg;

    FUNC_ENTER(H5O_attr_size, 0);

    assert(attr);

    /* Get size of name */
    ret_value=2;    /* Size to store length of name */
    ret_value+=HDstrlen(attr->name); /* Add length of name (non-zero terminated) */

    /* Get size of datatype information */
    ret_value+=attr->dt_size;

    /* Get size of [simple] dataspace information */
    ret_value+=attr->ds_size;

    /* Get size of attribute data */
    ret_value+=attr->data_size;

    FUNC_LEAVE(ret_value);
}

/*-------------------------------------------------------------------------
 * Function:    H5O_attr_reset
 *
 * Purpose:     Frees resources within a attribute message, but doesn't free
 *              the message itself.
 *
 * Return:      Success:        SUCCEED
 *
 *              Failure:        FAIL
 *
 * Programmer:  Robb Matzke
 *              Tuesday, December  9, 1997
 *
 * Modifications:
 *
 *-------------------------------------------------------------------------
 */
static herr_t
H5O_attr_reset(void *_mesg)
{
    H5A_t                  *attr = (H5A_t *) _mesg;
    H5A_t                  *tmp = NULL;

    FUNC_ENTER(H5O_attr_reset, FAIL);

    if (attr) {
        tmp = H5MM_xmalloc(sizeof(H5A_t));
        *tmp = *attr;
        H5A_close(tmp);
        HDmemset(attr, 0, sizeof(H5A_t));
    }
    FUNC_LEAVE(SUCCEED);
}

/*--------------------------------------------------------------------------
 NAME
    H5O_attr_debug
 PURPOSE
    Prints debugging information for an attribute message
 USAGE
    void *H5O_attr_debug(f, mesg, stream, indent, fwidth)
        H5F_t *f;               IN: pointer to the HDF5 file struct
        const void *mesg;       IN: Pointer to the source attribute struct
        FILE *stream;           IN: Pointer to the stream for output data
        intn indent;            IN: Amount to indent information by
        intn fwidth;            IN: Field width (?)
 RETURNS
    SUCCEED/FAIL
 DESCRIPTION
        This function prints debugging output to the stream passed as a 
    parameter.
--------------------------------------------------------------------------*/
static herr_t
H5O_attr_debug(H5F_t __unused__ *f, const void __unused__ *mesg, FILE __unused__ * stream,
                intn __unused__ indent, intn __unused__ fwidth)
{
    const H5A_t            *attr = (const H5A_t *) mesg;
#ifdef LATER
    const char             *s;
    char                    buf[256];
    intn                    i, j;
#endif /* LATER */

    FUNC_ENTER(H5O_attr_debug, FAIL);

    /* check args */
    assert(f);
    assert(attr);
    assert(stream);
    assert(indent >= 0);
    assert(fwidth >= 0);

#ifdef LATER
    switch (dt->type) {
    case H5T_INTEGER:
        s = "integer";
        break;
    case H5T_FLOAT:
        s = "floating-point";
        break;
    case H5T_TIME:
        s = "date and time";
        break;
    case H5T_STRING:
        s = "text string";
        break;
    case H5T_BITFIELD:
        s = "bit field";
        break;
    case H5T_OPAQUE:
        s = "opaque";
        break;
    case H5T_COMPOUND:
        s = "compound";
        break;
    default:
        sprintf(buf, "H5T_CLASS_%d", (int) (dt->type));
        s = buf;
        break;
    }
    fprintf(stream, "%*s%-*s %s\n", indent, "", fwidth,
            "Type class:",
            s);

    fprintf(stream, "%*s%-*s %lu byte%s\n", indent, "", fwidth,
            "Size:",
            (unsigned long) (dt->size), 1 == dt->size ? "" : "s");

    if (H5T_COMPOUND == dt->type) {
        fprintf(stream, "%*s%-*s %d\n", indent, "", fwidth,
                "Number of members:",
                dt->u.compnd.nmembs);
        for (i = 0; i < dt->u.compnd.nmembs; i++) {
            sprintf(buf, "Member %d:", i);
            fprintf(stream, "%*s%-*s %s\n", indent, "", fwidth,
                    buf,
                    dt->u.compnd.memb[i].name);
            fprintf(stream, "%*s%-*s %lu\n", indent + 3, "", MAX(0, fwidth-3),
                    "Byte offset:",
                    (unsigned long) (dt->u.compnd.memb[i].offset));
            fprintf(stream, "%*s%-*s %d%s\n", indent + 3, "", MAX(0, fwidth-3),
                    "Dimensionality:",
                    dt->u.compnd.memb[i].ndims,
                    0 == dt->u.compnd.memb[i].ndims ? " (scalar)" : "");
            if (dt->u.compnd.memb[i].ndims > 0) {
                fprintf(stream, "%*s%-*s {", indent + 3, "", MAX(0, fwidth-3),
                        "Size:");
                for (j = 0; j < dt->u.compnd.memb[i].ndims; j++) {
                    fprintf(stream, "%s%lu", j ? ", " : "",
                            (unsigned long) (dt->u.compnd.memb[i].dim[j]));
                }
                fprintf(stream, "}\n");
                fprintf(stream, "%*s%-*s {", indent + 3, "", MAX(0, fwidth-3),
                        "Permutation:");
                for (j = 0; j < dt->u.compnd.memb[i].ndims; j++) {
                    fprintf(stream, "%s%lu", j ? ", " : "",
                            (unsigned long) (dt->u.compnd.memb[i].perm[j]));
                }
                fprintf(stream, "}\n");
            }
            H5O_dtype_debug(f, dt->u.compnd.memb[i].type, stream,
                            indent + 3, MAX(0, fwidth - 3));
        }
    } else {
        switch (dt->u.atomic.order) {
        case H5T_ORDER_LE:
            s = "little endian";
            break;
        case H5T_ORDER_BE:
            s = "big endian";
            break;
        case H5T_ORDER_VAX:
            s = "VAX";
            break;
        case H5T_ORDER_NONE:
            s = "none";
            break;
        default:
            sprintf(buf, "H5T_ORDER_%d", dt->u.atomic.order);
            s = buf;
            break;
        }
        fprintf(stream, "%*s%-*s %s\n", indent, "", fwidth,
                "Byte order:",
                s);

        fprintf(stream, "%*s%-*s %lu bit%s\n", indent, "", fwidth,
                "Precision:",
                (unsigned long) (dt->u.atomic.prec),
                1 == dt->u.atomic.prec ? "" : "s");

        fprintf(stream, "%*s%-*s %lu bit%s\n", indent, "", fwidth,
                "Offset:",
                (unsigned long) (dt->u.atomic.offset),
                1 == dt->u.atomic.offset ? "" : "s");

        switch (dt->u.atomic.lsb_pad) {
        case H5T_PAD_ZERO:
            s = "zero";
            break;
        case H5T_PAD_ONE:
            s = "one";
            break;
        default:
            s = "pad?";
            break;
        }
        fprintf(stream, "%*s%-*s %s\n", indent, "", fwidth,
                "Low pad type:", s);

        switch (dt->u.atomic.msb_pad) {
        case H5T_PAD_ZERO:
            s = "zero";
            break;
        case H5T_PAD_ONE:
            s = "one";
            break;
        default:
            s = "pad?";
            break;
        }
        fprintf(stream, "%*s%-*s %s\n", indent, "", fwidth,
                "High pad type:", s);

        if (H5T_FLOAT == dt->type) {
            switch (dt->u.atomic.u.f.pad) {
            case H5T_PAD_ZERO:
                s = "zero";
                break;
            case H5T_PAD_ONE:
                s = "one";
                break;
            default:
                if (dt->u.atomic.u.f.pad < 0) {
                    sprintf(buf, "H5T_PAD_%d", -(dt->u.atomic.u.f.pad));
                } else {
                    sprintf(buf, "bit-%d", dt->u.atomic.u.f.pad);
                }
                s = buf;
                break;
            }
            fprintf(stream, "%*s%-*s %s\n", indent, "", fwidth,
                    "Internal pad type:", s);

            switch (dt->u.atomic.u.f.norm) {
            case H5T_NORM_IMPLIED:
                s = "implied";
                break;
            case H5T_NORM_MSBSET:
                s = "msb set";
                break;
            case H5T_NORM_NONE:
                s = "none";
                break;
            default:
                sprintf(buf, "H5T_NORM_%d", (int) (dt->u.atomic.u.f.norm));
                s = buf;
            }
            fprintf(stream, "%*s%-*s %s\n", indent, "", fwidth,
                    "Normalization:", s);

            fprintf(stream, "%*s%-*s %lu\n", indent, "", fwidth,
                    "Sign bit location:",
                    (unsigned long) (dt->u.atomic.u.f.sign));

            fprintf(stream, "%*s%-*s %lu\n", indent, "", fwidth,
                    "Exponent location:",
                    (unsigned long) (dt->u.atomic.u.f.epos));

            fprintf(stream, "%*s%-*s 0x%08lx\n", indent, "", fwidth,
                    "Exponent bias:",
                    (unsigned long) (dt->u.atomic.u.f.ebias));

            fprintf(stream, "%*s%-*s %lu\n", indent, "", fwidth,
                    "Exponent size:",
                    (unsigned long) (dt->u.atomic.u.f.esize));

            fprintf(stream, "%*s%-*s %lu\n", indent, "", fwidth,
                    "Mantissa location:",
                    (unsigned long) (dt->u.atomic.u.f.mpos));

            fprintf(stream, "%*s%-*s %lu\n", indent, "", fwidth,
                    "Mantissa size:",
                    (unsigned long) (dt->u.atomic.u.f.msize));

        } else if (H5T_INTEGER == dt->type) {
            switch (dt->u.atomic.u.i.sign) {
            case H5T_SGN_NONE:
                s = "none";
                break;
            case H5T_SGN_2:
                s = "2's comp";
                break;
            default:
                sprintf(buf, "H5T_SGN_%d", (int) (dt->u.atomic.u.i.sign));
                s = buf;
                break;
            }
            fprintf(stream, "%*s%-*s %s\n", indent, "", fwidth,
                    "Sign scheme:", s);

        }
    }
#endif /* LATER */

    FUNC_LEAVE(SUCCEED);
}