-
Notifications
You must be signed in to change notification settings - Fork 266
/
Copy pathdaux.c
1403 lines (1254 loc) · 38.7 KB
/
daux.c
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
/*
Copyright (c) 1998-2018 University Corporation for Atmospheric Research/Unidata
See COPYRIGHT for license information.
*/
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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 [email protected]. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include "config.h"
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "config.h"
#include "netcdf.h"
#include "netcdf_aux.h"
#include "nc4internal.h"
#include "ncoffsets.h"
#include "nclog.h"
#include "ncrc.h"
#include "netcdf_filter.h"
#include "ncpathmgr.h"
#include "nclist.h"
struct NCAUX_FIELD {
char* name;
nc_type fieldtype;
size_t ndims;
int dimsizes[NC_MAX_VAR_DIMS];
size_t size;
size_t offset;
size_t alignment;
};
struct NCAUX_CMPD {
int ncid;
int mode;
char* name;
size_t nfields;
struct NCAUX_FIELD* fields;
size_t size;
size_t offset; /* cumulative as fields are added */
size_t alignment;
};
static int computefieldinfo(struct NCAUX_CMPD* cmpd);
static int filterspec_cvt(const char* txt, size_t* nparamsp, unsigned int* params);
EXTERNL int nc_dump_data(int ncid, nc_type xtype, void* memory, size_t count, char** bufp);
EXTERNL int nc_parse_plugin_pathlist(const char* path0, NClist* dirlist);
/**************************************************/
/*
This code is a variant of the H5detect.c code from HDF5.
Author: D. Heimbigner 10/7/2008
*/
EXTERNL int
ncaux_begin_compound(int ncid, const char *name, int alignmode, void** tagp)
{
#ifdef USE_NETCDF4
int status = NC_NOERR;
struct NCAUX_CMPD* cmpd = NULL;
if(tagp) *tagp = NULL;
cmpd = (struct NCAUX_CMPD*)calloc(1,sizeof(struct NCAUX_CMPD));
if(cmpd == NULL) {status = NC_ENOMEM; goto fail;}
cmpd->ncid = ncid;
cmpd->mode = alignmode;
cmpd->nfields = 0;
cmpd->name = strdup(name);
if(cmpd->name == NULL) {status = NC_ENOMEM; goto fail;}
if(tagp) {
*tagp = (void*)cmpd;
} else { /* Error, free cmpd to avoid memory leak. */
free(cmpd);
}
return status;
fail:
ncaux_abort_compound((void*)cmpd);
return status;
#else
return NC_ENOTBUILT;
#endif
}
EXTERNL int
ncaux_abort_compound(void* tag)
{
#ifdef USE_NETCDF4
size_t i;
struct NCAUX_CMPD* cmpd = (struct NCAUX_CMPD*)tag;
if(cmpd == NULL) goto done;
if(cmpd->name) free(cmpd->name);
for(i=0;i<cmpd->nfields;i++) {
struct NCAUX_FIELD* field = &cmpd->fields[i];
if(field->name) free(field->name);
}
if(cmpd->fields) free(cmpd->fields);
free(cmpd);
done:
return NC_NOERR;
#else
return NC_ENOTBUILT;
#endif
}
EXTERNL int
ncaux_add_field(void* tag, const char *name, nc_type field_type,
int ndims, const int* dimsizes)
{
#ifdef USE_NETCDF4
int i;
int status = NC_NOERR;
struct NCAUX_CMPD* cmpd = (struct NCAUX_CMPD*)tag;
struct NCAUX_FIELD* newfields = NULL;
struct NCAUX_FIELD* field = NULL;
if(cmpd == NULL) goto done;
if(ndims < 0) {status = NC_EINVAL; goto done;}
for(i=0;i<ndims;i++) {
if(dimsizes[i] <= 0) {status = NC_EINVAL; goto done;}
}
if(cmpd->fields == NULL) {
newfields = (struct NCAUX_FIELD*)calloc(1,sizeof(struct NCAUX_FIELD));
} else {
newfields = (struct NCAUX_FIELD*)realloc(cmpd->fields,cmpd->nfields+1*sizeof(struct NCAUX_FIELD));
}
if(cmpd->fields == NULL) {status = NC_ENOMEM; goto done;}
cmpd->fields = newfields;
field = &cmpd->fields[cmpd->nfields+1];
field->name = strdup(name);
field->fieldtype = field_type;
if(field->name == NULL) {status = NC_ENOMEM; goto done;}
field->ndims = (size_t)ndims;
memcpy(field->dimsizes,dimsizes,sizeof(int)*field->ndims);
cmpd->nfields++;
done:
if(newfields)
free(newfields);
return status;
#else
return NC_ENOTBUILT;
#endif
}
EXTERNL int
ncaux_end_compound(void* tag, nc_type* idp)
{
#ifdef USE_NETCDF4
size_t i;
int status = NC_NOERR;
struct NCAUX_CMPD* cmpd = (struct NCAUX_CMPD*)tag;
if(cmpd == NULL) {status = NC_EINVAL; goto done;}
/* Compute field and compound info */
status = computefieldinfo(cmpd);
if(status != NC_NOERR) goto done;
status = nc_def_compound(cmpd->ncid, cmpd->size, cmpd->name, idp);
if(status != NC_NOERR) goto done;
for(i=0;i<cmpd->nfields;i++) {
struct NCAUX_FIELD* field = &cmpd->fields[i];
if(field->ndims > 0) {
status = nc_insert_compound(cmpd->ncid, *idp, field->name,
field->offset, field->fieldtype);
} else {
status = nc_insert_array_compound(cmpd->ncid, *idp, field->name,
field->offset, field->fieldtype,
(int)field->ndims,field->dimsizes);
}
if(status != NC_NOERR) goto done;
}
done:
return status;
#else
return NC_ENOTBUILT;
#endif
}
/**************************************************/
/**
@param ncclass - type class for which alignment is requested; excludes ENUM|COMPOUND
*/
int
ncaux_class_alignment(int ncclass, size_t* alignp)
{
int stat = NC_NOERR;
size_t align = 0;
if(ncclass <= NC_MAX_ATOMIC_TYPE || ncclass == NC_VLEN || ncclass == NC_OPAQUE) {
stat = NC_class_alignment(ncclass,&align);
} else {
nclog(NCLOGERR,"ncaux_class_alignment: class %d; alignment cannot be determermined",ncclass);
}
if(alignp) *alignp = align;
if(align == 0) stat = NC_EINVAL;
return stat;
}
#ifdef USE_NETCDF4
/* Find first primitive field of a possibly nested sequence of compounds */
static nc_type
findfirstfield(int ncid, nc_type xtype)
{
int status = NC_NOERR;
nc_type fieldtype = xtype;
if(xtype <= NC_MAX_ATOMIC_TYPE) goto done;
status = nc_inq_compound_fieldtype(ncid, xtype, 0, &fieldtype);
if(status != NC_NOERR) goto done;
fieldtype = findfirstfield(ncid,fieldtype);
done:
return (status == NC_NOERR?fieldtype:NC_NAT);
}
static size_t
getpadding(size_t offset, size_t alignment)
{
size_t rem = (alignment==0?0:(offset % alignment));
size_t pad = (rem==0?0:(alignment - rem));
return pad;
}
static size_t
dimproduct(size_t ndims, int* dimsizes)
{
size_t i;
size_t product = 1;
for(i=0;i<ndims;i++) product *= (size_t)dimsizes[i];
return product;
}
static int
computefieldinfo(struct NCAUX_CMPD* cmpd)
{
size_t i;
int status = NC_NOERR;
size_t offset = 0;
size_t totaldimsize;
/* Assign the sizes for the fields */
for(i=0;i<cmpd->nfields;i++) {
struct NCAUX_FIELD* field = &cmpd->fields[i];
status = nc_inq_type(cmpd->ncid,field->fieldtype,NULL,&field->size);
if(status != NC_NOERR) goto done;
totaldimsize = dimproduct(field->ndims,field->dimsizes);
field->size *= totaldimsize;
}
for(offset=0,i=0;i<cmpd->nfields;i++) {
struct NCAUX_FIELD* field = &cmpd->fields[i];
size_t alignment = 0;
nc_type firsttype = findfirstfield(cmpd->ncid,field->fieldtype);
/* only support 'c' alignment for now*/
switch (field->fieldtype) {
case NC_OPAQUE:
field->alignment = 1;
break;
case NC_ENUM:
status = ncaux_type_alignment(firsttype,cmpd->ncid,&field->alignment);
break;
case NC_VLEN: /*fall thru*/
case NC_COMPOUND:
status = ncaux_type_alignment(firsttype,cmpd->ncid,&field->alignment);
break;
default:
status = ncaux_type_alignment(field->fieldtype,cmpd->ncid,&field->alignment);
break;
}
offset += getpadding(offset,alignment);
field->offset = offset;
offset += field->size;
}
cmpd->size = offset;
cmpd->alignment = cmpd->fields[0].alignment;
done:
return status;
}
#endif /*USE_NETCDF4*/
/**************************************************/
/* Forward */
#define NUMCHAR "0123456789"
#define LPAREN '('
#define RPAREN ')'
#define LBRACK '['
#define RBRACK ']'
/* Look at q0 and q1) to determine type */
static int
gettype(const char q0, const char q1, int* isunsignedp)
{
int type = 0;
int isunsigned = 0;
char typechar;
isunsigned = (q0 == 'u' || q0 == 'U');
if(q1 == '\0')
typechar = q0; /* we were given only a single char */
else if(isunsigned)
typechar = q1; /* we have something like Ux as the tag */
else
typechar = q1; /* look at last char for tag */
switch (typechar) {
case 'f': case 'F': case '.': type = 'f'; break; /* float */
case 'd': case 'D': type = 'd'; break; /* double */
case 'b': case 'B': type = 'b'; break; /* byte */
case 's': case 'S': type = 's'; break; /* short */
case 'l': case 'L': type = 'l'; break; /* long long */
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9': type = 'i'; break;
case 'u': case 'U': type = 'i'; isunsigned = 1; break; /* unsigned int */
case '\0': type = 'i'; break;
default: break;
}
if(isunsignedp) *isunsignedp = isunsigned;
return type;
}
#ifdef WORDS_BIGENDIAN
/* Byte swap an 8-byte integer in place */
static void
byteswap8(unsigned char* mem)
{
unsigned char c;
c = mem[0];
mem[0] = mem[7];
mem[7] = c;
c = mem[1];
mem[1] = mem[6];
mem[6] = c;
c = mem[2];
mem[2] = mem[5];
mem[5] = c;
c = mem[3];
mem[3] = mem[4];
mem[4] = c;
}
/* Byte swap an 8-byte integer in place */
static void
byteswap4(unsigned char* mem)
{
unsigned char c;
c = mem[0];
mem[0] = mem[3];
mem[3] = c;
c = mem[1];
mem[1] = mem[2];
mem[2] = c;
}
#endif
/**************************************************/
/* Moved here from netcdf_filter.h */
/*
This function implements the 8-byte conversion algorithms for HDF5
Before calling *nc_def_var_filter* (unless *NC_parsefilterspec* was used),
the client must call this function with the decode argument set to 0.
Inside the filter code, this function should be called with the decode
argument set to 1.
* @params mem8 is a pointer to the 8-byte value either to fix.
* @params decode is 1 if the function should apply the 8-byte decoding algorithm
else apply the encoding algorithm.
*/
void
ncaux_h5filterspec_fix8(unsigned char* mem8, int decode)
{
#ifdef WORDS_BIGENDIAN
if(decode) { /* Apply inverse of the encode case */
byteswap4(mem8); /* step 1: byte-swap each piece */
byteswap4(mem8+4);
byteswap8(mem8); /* step 2: convert to little endian format */
} else { /* encode */
byteswap8(mem8); /* step 1: convert to little endian format */
byteswap4(mem8); /* step 2: byte-swap each piece */
byteswap4(mem8+4);
}
#else /* Little endian */
/* No action is necessary */
#endif
}
/*
Parse a filter spec string into a NC_FILTER_SPEC*
Note that this differs from the usual case in that the
function is called once to get both the number of parameters
and the parameters themselves (hence the unsigned int** paramsp).
@param txt - a string containing the spec as a sequence of
constants separated by commas, where first constant
is the filter id and the rest are parameters.
@param idp - store the parsed filter id here
@param nparamsp - store the number of parameters here
@param paramsp - store the vector of parameters here; caller frees.
@return NC_NOERR if parse succeeded
@return NC_EINVAL otherwise
*/
EXTERNL int
ncaux_h5filterspec_parse(const char* txt, unsigned int* idp, size_t* nparamsp, unsigned int** paramsp)
{
int stat = NC_NOERR;
size_t i;
char* p;
char* sdata0 = NULL; /* what to free */
char* sdata = NULL; /* sdata0 with leading prefix skipped */
size_t nparams; /* no. of comma delimited params */
size_t nactual; /* actual number of unsigned int's */
const char* sid = NULL;
unsigned int filterid = 0;
unsigned int* params = NULL;
size_t len;
if(txt == NULL)
{stat = NC_EINVAL; goto done;}
len = strlen(txt);
if(len == 0)
{stat = NC_EINVAL; goto done;}
if((sdata0 = (char*)calloc(1,len+1+1))==NULL)
{stat = NC_ENOMEM; goto done;}
memcpy(sdata0,txt,len);
sdata = sdata0;
/* Count number of parameters + id and delimit */
p=sdata;
for(nparams=0;;nparams++) {
char* q = strchr(p,',');
if(q == NULL) break;
*q++ = '\0';
p = q;
}
nparams++; /* for final piece */
if(nparams == 0)
{stat = NC_EINVAL; goto done;} /* no id and no parameters */
p = sdata;
/* Extract the filter id */
sid = p;
if((sscanf(sid,"%u",&filterid)) != 1) {stat = NC_EINVAL; goto done;}
nparams--;
/* skip past the filter id */
p = p + strlen(p) + 1;
/* Allocate the max needed space (assume all params are 64 bit) */
if((params = (unsigned int*)calloc(sizeof(unsigned int),(nparams)*2))==NULL)
{stat = NC_ENOMEM; goto done;}
/* walk and capture */
for(nactual=0,i=0;i<nparams;i++) { /* step thru param strings */
size_t count = 0;
len = strlen(p);
/* skip leading white space */
while(strchr(" ",*p) != NULL) {p++; len--;}
if((stat = filterspec_cvt(p,&count,params+nactual))) goto done;
nactual += count;
p = p + strlen(p) + 1; /* move to next param string */
}
/* Now return results */
if(idp) *idp = filterid;
if(nparamsp) *nparamsp = nactual;
if(paramsp) {*paramsp = params; params = NULL;}
done:
nullfree(params);
nullfree(sdata0);
return stat;
}
/*
Parse a filter parameter string into a sequence of unsigned ints.
@param txt - a string containing the parameter string.
@param nuiparamsp - store the number of unsigned ints here
@param uiparamsp - store the vector of unsigned ints here; caller frees.
@return NC_NOERR if parse succeeded
@return NC_EINVAL otherwise
*/
EXTERNL int
ncaux_h5filterspec_parse_parameter(const char* txt, size_t* nuiparamsp, unsigned int* uiparams)
{
int stat = NC_NOERR;
char* p;
char* sdata0 = NULL; /* what to free */
char* sdata = NULL; /* sdata0 with leading prefix skipped */
size_t nuiparams = 0;
size_t len;
if(txt == NULL)
{stat = NC_EINVAL; goto done;}
len = strlen(txt);
if(len == 0)
{stat = NC_EINVAL; goto done;}
if((sdata0 = (char*)calloc(1,len+1+1))==NULL)
{stat = NC_ENOMEM; goto done;}
memcpy(sdata0,txt,len);
sdata = sdata0;
p = sdata;
nuiparams = 0;
len = strlen(p);
/* skip leading white space */
while(strchr(" ",*p) != NULL) {p++; len--;}
if((stat = filterspec_cvt(p,&nuiparams,uiparams))) goto done;
/* Now return results */
if(nuiparamsp) *nuiparamsp = nuiparams;
done:
nullfree(sdata0);
return stat;
}
/*
Parse a string containing multiple '|' separated filter specs.
Use a vector of NC_Filterspec structs to return results.
@param txt0 - a string containing the list of filter specs.
@param formatp - store any leading format integer here
@param nspecsp - # of parsed specs
@param specsp - pointer to hold vector of parsed specs. Caller frees
@return NC_NOERR if parse succeeded
@return NC_EINVAL if bad parameters or parse failed
*/
EXTERNL int
ncaux_h5filterspec_parselist(const char* txt0, int* formatp, size_t* nspecsp, NC_H5_Filterspec*** vectorp)
{
int stat = NC_NOERR;
int format = 0;
size_t len = 0;
size_t nspecs = 0;
NC_H5_Filterspec** vector = NULL;
char* spec = NULL; /* without prefix */
char* p = NULL;
char* q = NULL;
if(txt0 == NULL) return NC_EINVAL;
/* Duplicate txt0 so we can modify it */
len = strlen(txt0);
if((spec = calloc(1,len+1+1)) == NULL) {stat = NC_ENOMEM; goto done;}
memcpy(spec,txt0,len); /* Note double ending nul */
/* See if there is a prefix '[format]' tag */
if(spec[0] == LBRACK) {
p = spec + 1;
q = strchr(p,RBRACK);
if(q == NULL) {stat = NC_EINVAL; goto done;}
*q++ = '\0'; /* delimit tag */
if(sscanf(p,"%d",&format) != 1) {stat = NC_EINVAL; goto done;}
spec = q; /* skip tag wrt later processing */
}
/* pass 1: count number of specs */
p = spec;
nspecs = 0;
while(*p) {
q = strchr(p,'|');
if(q == NULL) q = p + strlen(p); /* fake it */
nspecs++;
p = q + 1;
}
if(nspecs > 0) {
size_t count = 0;
if((vector = (NC_H5_Filterspec**)calloc(sizeof(NC_H5_Filterspec*),nspecs)) == NULL)
{stat = NC_ENOMEM; goto done;}
/* pass 2: parse */
p = spec;
for(count=0;count<nspecs;count++) {
NC_H5_Filterspec* spec = (NC_H5_Filterspec*)calloc(1,sizeof(NC_H5_Filterspec));
if(spec == NULL) {stat = NC_ENOMEM; goto done;}
vector[count] = spec;
q = strchr(p,'|');
if(q == NULL) q = p + strlen(p); /* fake it */
*q = '\0';
if((stat=ncaux_h5filterspec_parse(p,&spec->filterid,&spec->nparams,&spec->params))) goto done;
p = q+1; /* ok because of double nul */
}
}
if(formatp) *formatp = format;
if(nspecsp) *nspecsp = nspecs;
if(vectorp) {*vectorp = vector; vector = NULL;}
done:
nullfree(spec);
if(vector) {
size_t i;
for(i=0;i<nspecs;i++)
ncaux_h5filterspec_free(vector[i]);
nullfree(vector);
}
return stat;
}
/*
Parse a string containing multiple '|' separated filter specs.
Use a vector of NC_Filterspec structs to return results.
@param txt0 - a string containing the list of filter specs.
@param formatp - store any leading format integer here
@param nspecsp - # of parsed specs
@param specsp - pointer to hold vector of parsed specs. Caller frees
@return NC_NOERR if parse succeeded
@return NC_EINVAL if bad parameters or parse failed
*/
EXTERNL void
ncaux_h5filterspec_free(NC_H5_Filterspec* f)
{
if(f) nullfree(f->params);
nullfree(f);
}
/*
Convert a parameter string to one or two unsigned ints/
@param txt - (in) string constant
@param nparamsp - (out) # of unsigned ints produced
@param params - (out) produced unsigned ints
@return NC_NOERR if parse succeeded
@return NC_EINVAL if bad parameters or parse failed
*/
static int
filterspec_cvt(const char* txt, size_t* nparamsp, unsigned int* params)
{
int stat = NC_NOERR;
size_t nparams = 0; /*actual count*/
unsigned long long val64u;
unsigned int val32u;
double vald;
float valf;
unsigned int *vector;
unsigned char mem[8];
int isunsigned = 0;
int isnegative = 0;
int type = 0;
const char* q;
const char* p = txt;
size_t len = strlen(p);
int sstat;
/* skip leading white space */
while(strchr(" ",*p) != NULL) {p++; len--;}
/* Get leading sign character, if any */
if(*p == '-') isnegative = 1;
/* Get trailing type tag characters */
switch (len) {
case 0: stat = NC_EINVAL; goto done; /* empty parameter */
case 1: case 2:
q = (p + len) - 1; /* point to last char */
type = gettype(*q,'\0',&isunsigned);
break;
default: /* > 2 => we might have a two letter tag */
q = (p + len) - 2;
type = gettype(*q,*(q+1),&isunsigned);
break;
}
/* Now parse */
switch (type) {
case 'b': case 's': case 'i':
/* special case for a positive integer;for back compatibility.*/
if(!isnegative)
sstat = sscanf(p,"%u",&val32u);
else
sstat = sscanf(p,"%d",(int*)&val32u);
if(sstat != 1) {stat = NC_EINVAL; goto done;}
switch(type) {
case 'b': val32u = (val32u & 0xFF); break;
case 's': val32u = (val32u & 0xFFFF); break;
}
params[nparams++] = val32u;
break;
case 'f':
sstat = sscanf(p,"%lf",&vald);
if(sstat != 1) {stat = NC_EINVAL; goto done;}
valf = (float)vald;
/* avoid type punning */
memcpy(¶ms[nparams++], &valf, sizeof(unsigned int));
break;
/* The following are 8-byte values, so we must swap pieces if this
is a little endian machine */
case 'd':
sstat = sscanf(p,"%lf",&vald);
if(sstat != 1) {stat = NC_EINVAL; goto done;};
memcpy(mem,&vald,sizeof(mem));
ncaux_h5filterspec_fix8(mem,0);
vector = (unsigned int*)mem;
params[nparams++] = vector[0];
params[nparams++] = vector[1];
break;
case 'l': /* long long */
if(isunsigned)
sstat = sscanf(p,"%llu",&val64u);
else
sstat = sscanf(p,"%lld",(long long*)&val64u);
if(sstat != 1) {stat = NC_EINVAL; goto done;};
memcpy(mem,&val64u,sizeof(mem));
ncaux_h5filterspec_fix8(mem,0);
vector = (unsigned int*)&mem;
params[nparams++] = vector[0];
params[nparams++] = vector[1];
break;
default:
{stat = NC_EINVAL; goto done;};
}
*nparamsp = nparams;
done:
return stat;
}
#if 0
/*
Parse a filter spec string into a NC_H5_Filterspec*
@param txt - a string containing the spec as a sequence of
constants separated by commas.
@param specp - store the parsed filter here -- caller frees
@return NC_NOERR if parse succeeded
@return NC_EINVAL otherwise
*/
EXTERNL int
ncaux_filter_parsespec(const char* txt, NC_H5_Filterspec** h5specp)
{
int stat = NC_NOERR;
NC_Filterspec* spec = NULL;
NC_H5_Filterspec* h5spec = NULL;
size_t len;
if(txt == NULL)
{stat = NC_EINVAL; goto done;}
len = strlen(txt);
if(len == 0) {stat = NC_EINVAL; goto done;}
/* Parse as strings */
if((stat = ncaux_filterspec_parse(txt,&spec))) goto done;
/* walk and convert */
if((stat = ncaux_filterspec_cvt(spec,&h5spec))) goto done;
/* Now return results */
if(h5specp != NULL) {*h5specp = h5spec; h5spec = NULL;}
done:
ncaux_filterspec_free(spec);
if(h5spec) nullfree(h5spec->params);
nullfree(h5spec);
return stat;
}
/*
Parse a string containing multiple '|' separated filter specs.
@param spec0 - a string containing the list of filter specs.
@param nspecsp - # of parsed specs
@param specsp - pointer to hold vector of parsed specs. Caller frees
@return NC_NOERR if parse succeeded
@return NC_EINVAL if bad parameters or parse failed
*/
EXTERNL int
ncaux_filter_parselist(const char* txt0, size_t* nspecsp, NC_H5_Filterspec*** vectorp)
{
int stat = NC_NOERR;
size_t len = 0;
size_t nspecs = 0;
NC_H5_Filterspec** vector = NULL;
char* spec0 = NULL; /* with prefix */
char* spec = NULL; /* without prefix */
char* p = NULL;
char* q = NULL;
if(txt0 == NULL) return NC_EINVAL;
/* Duplicate txt0 so we can modify it */
len = strlen(txt0);
if((spec = calloc(1,len+1+1)) == NULL) return NC_ENOMEM;
memcpy(spec,txt0,len); /* Note double ending nul */
spec0 = spec; /* Save for later free */
/* See if there is a prefix '[format]' tag; ignore it */
if(spec[0] == LBRACK) {
spec = q; /* skip tag wrt later processing */
}
/* pass 1: count number of specs */
p = spec;
nspecs = 0;
while(*p) {
q = strchr(p,'|');
if(q == NULL) q = p + strlen(p); /* fake it */
nspecs++;
p = q + 1;
}
if(nspecs > 0) {
int count = 0;
if((vector = (NC_H5_Filterspec**)malloc(sizeof(NC_H5_Filterspec*)*nspecs)) == NULL)
{stat = NC_ENOMEM; goto done;}
/* pass 2: parse */
p = spec;
for(count=0;count<nspecs;count++) {
NC_H5_Filterspec* aspec = NULL;
q = strchr(p,'|');
if(q == NULL) q = p + strlen(p); /* fake it */
*q = '\0';
if(ncaux_filter_parsespec(p,&aspec))
{stat = NC_EINVAL; goto done;}
vector[count] = aspec; aspec = NULL;
p = q+1; /* ok because of double nul */
}
}
if(nspecsp) *nspecsp = nspecs;
if(vectorp) *vectorp = (nspecs == 0 ? NULL : vector);
vector = NULL;
done:
nullfree(spec0);
if(vector != NULL) {
int k;
for(k=0;k<nspecs;k++) {
NC_H5_Filterspec* nfs = vector[k];
if(nfs->params) free(nfs->params);
nullfree(nfs);
}
free(vector);
}
return stat;
}
#endif
/**************************************************/
/* Wrappers to export selected functions from libnetcdf */
EXTERNL int
ncaux_readfile(const char* filename, size_t* sizep, void** datap)
{
int stat = NC_NOERR;
NCbytes* content = ncbytesnew();
stat = NC_readfile(filename,content);
if(stat == NC_NOERR && sizep)
*sizep = ncbyteslength(content);
if(stat == NC_NOERR && datap)
*datap = ncbytesextract(content);
ncbytesfree(content);
return stat;
}
EXTERNL int
ncaux_writefile(const char* filename, size_t size, void* content)
{
return NC_writefile(filename,size,content);
}
/**************************************************/
/**
Reclaim the output tree of data from a call
to e.g. nc_get_vara or the input to e.g. nc_put_vara.
This recursively walks the top-level instances to
reclaim any nested data such as vlen or strings or such.
This function is just a wrapper around nc_reclaim_data.
@param ncid file ncid
@param xtype type id
@param memory to reclaim
@param count number of instances of the type in memory
@return error code
*/
EXTERNL int
ncaux_reclaim_data(int ncid, int xtype, void* memory, size_t count)
{
/* Defer to the internal version */
return nc_reclaim_data(ncid, xtype, memory, count);
}
/*
This function is just a wrapper around nc_reclaim_data_all.
@param ncid file ncid
@param xtype type id
@param memory to reclaim
@param count number of instances of the type in memory
@return error code
*/
EXTERNL int
ncaux_reclaim_data_all(int ncid, int xtype, void* memory, size_t count)
{
/* Defer to the internal version */
return nc_reclaim_data_all(ncid, xtype, memory, count);
}
EXTERNL int NC_inq_any_type(int ncid, nc_type typeid, char *name, size_t *size, nc_type *basetypep, size_t *nfieldsp, int *classp);
EXTERNL int
ncaux_inq_any_type(int ncid, nc_type typeid, char *name, size_t *sizep, nc_type *basetypep, size_t *nfieldsp, int *classp)
{
return NC_inq_any_type(ncid, typeid, name, sizep, basetypep, nfieldsp, classp);
}
#ifdef USE_NETCDF4
/**
@param ncid - only needed for a compound type
@param xtype - type for which alignment is requested
*/
int
ncaux_type_alignment(int xtype, int ncid, size_t* alignp)
{
/* Defer to the internal version */
return NC_type_alignment(ncid, xtype, alignp);
}
#endif
/**
Dump the output tree of data from a call
to e.g. nc_get_vara or the input to e.g. nc_put_vara.
This function is just a wrapper around nc_dump__data.
@param ncid file ncid
@param xtype type id
@param memory to print
@param count number of instances of the type in memory
@return error code
*/
EXTERNL int
ncaux_dump_data(int ncid, int xtype, void* memory, size_t count, char** bufp)
{
return nc_dump_data(ncid, xtype, memory, count, bufp);
}
/**************************************************/
/* Path List Utilities */
/* Path-list Parser:
@param pathlen length of the pathlist0 arg
@param pathlist0 the string to parse
@param dirs return the parsed directories -- see note below.
@param sep the separator parsing: one of ';' | ':' | '\0', where zero means use platform default.
@return NC_NOERR || NC_EXXX
Note: If dirs->dirs is not NULL, then this function
will allocate the space for the vector of directory path.
The user is then responsible for free'ing that vector
(or call ncaux_plugin_path_reclaim).
*/
EXTERNL int
ncaux_plugin_path_parsen(size_t pathlen, const char* pathlist0, char sep, NCPluginList* dirs)
{
int stat = NC_NOERR;
size_t i;
char* path = NULL;
char* p;
size_t count;
char seps[2] = "\0\0"; /* will contain all allowable separators */
if(dirs == NULL) {stat = NC_EINVAL; goto done;}
if(pathlen == 0 || pathlist0 == NULL) {dirs->ndirs = 0; goto done;}
/* If a separator is specified, use it, otherwise search for ';' or ':' */
seps[0] = sep;
if(sep == 0) {
if(NCgetlocalpathkind() == NCPD_WIN
|| NCgetlocalpathkind() == NCPD_MSYS)
seps[0] = ';';
else
seps[0] = ':';
}
if((path = malloc(pathlen+1+1))==NULL) {stat = NC_ENOMEM; goto done;}