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HDF5.xs
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HDF5.xs
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#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include "ppport.h"
#include "hdf5.h"
#include "hdf5_hl.h"
#include "const-c.inc"
#include <string.h>
MODULE = Data::HDF5 PACKAGE = Data::HDF5
PROTOTYPES: ENABLE
INCLUDE: const-xs.inc
#############################################################################
# H5F API
#############################################################################
herr_t
H5Fclose(file_id)
hid_t file_id
CODE:
RETVAL = H5Fclose(file_id);
OUTPUT:
RETVAL
#---------------------------------------------------------------------------#
hid_t
H5Fcreate(name, flags, fcpl_id, fapl_id)
char *name
unsigned int flags
hid_t fcpl_id
hid_t fapl_id
CODE:
RETVAL = H5Fcreate(name, flags, fcpl_id, fapl_id);
OUTPUT:
RETVAL
#---------------------------------------------------------------------------#
herr_t
H5Fflush(file_id, scope)
hid_t file_id
H5F_scope_t scope
CODE:
RETVAL = H5Fflush(file_id, scope);
OUTPUT:
RETVAL
#---------------------------------------------------------------------------#
hid_t
H5Fget_access_plist(file_id)
hid_t file_id
CODE:
RETVAL = H5Fget_access_plist(file_id);
OUTPUT:
RETVAL
#---------------------------------------------------------------------------#
SV *
H5Fget_intent(file_id)
hid_t file_id
INIT:
unsigned *intent;
SV *data;
CODE:
intent = (unsigned *)malloc(sizeof(unsigned));
H5Fget_intent(
file_id,
intent
);
data = newSVuv(*intent);
RETVAL = data;
free(intent);
OUTPUT:
RETVAL
#---------------------------------------------------------------------------#
SV *
H5Fget_name(obj_id)
hid_t obj_id
INIT:
char *name;
SV *data;
CODE:
size_t size = H5Fget_name(
obj_id,
NULL,
0
) + 1;
name = (char *)malloc(sizeof(char)*size);
H5Fget_name(
obj_id,
name,
size
);
data = newSVpv(name, 0);
RETVAL = data;
free(name);
OUTPUT:
RETVAL
#---------------------------------------------------------------------------#
hid_t
H5Fopen(name, flags, fapl_id)
char *name
unsigned int flags
hid_t fapl_id
CODE:
RETVAL = H5Fopen(name, flags, fapl_id);
OUTPUT:
RETVAL
#############################################################################
# H5G API
#############################################################################
herr_t
H5Gclose(group_id)
hid_t group_id
CODE:
RETVAL = H5Gclose(group_id);
OUTPUT:
RETVAL
#----------------------------------------------------------------------------#
hid_t
H5Gcreate(loc_id, name, lcpl_id, gcpl_id, gapl_id)
hid_t loc_id
char *name
hid_t lcpl_id
hid_t gcpl_id
hid_t gapl_id
CODE:
RETVAL = H5Gcreate2(loc_id, name, lcpl_id, gcpl_id, gapl_id);
OUTPUT:
RETVAL
#----------------------------------------------------------------------------#
hid_t
H5Gget_create_plist(group_id)
hid_t group_id
CODE:
RETVAL = H5Gget_create_plist(group_id);
OUTPUT:
RETVAL
#----------------------------------------------------------------------------#
SV *
H5Gget_info(group_id)
hid_t group_id
PREINIT:
herr_t ret;
HV *info_hash;
H5G_info_t *info;
CODE:
info = (H5G_info_t *)malloc(sizeof(H5G_info_t));
ret = H5Gget_info(group_id, info);
if (ret < 0) {
RETVAL = newSViv(ret);
}
else {
info_hash = (HV *) sv_2mortal((SV *) newHV ());
hv_store( info_hash, "nlinks", 6, newSVuv( info->nlinks ), 0 );
hv_store( info_hash, "max_corder", 10, newSViv( info->max_corder ), 0 );
hv_store( info_hash, "storage_type", 12, newSViv( info->storage_type ), 0 );
hv_store( info_hash, "mounted", 7, newSVuv( info->mounted ), 0 );
RETVAL = newRV((SV *)info_hash);
}
free(info);
OUTPUT:
RETVAL
#----------------------------------------------------------------------------#
SV *
H5Gget_info_by_idx(loc_id, group_name, index_type, order, n, lapl_id)
hid_t loc_id
char *group_name
H5_index_t index_type
H5_iter_order_t order
hsize_t n
hid_t lapl_id
PREINIT:
herr_t ret;
HV *info_hash;
H5G_info_t *info;
CODE:
info = (H5G_info_t *)malloc(sizeof(H5G_info_t));
ret = H5Gget_info_by_idx(
loc_id,
group_name,
index_type,
order,
n,
info,
lapl_id
);
if (ret < 0) {
RETVAL = newSViv(ret);
}
else {
info_hash = (HV *) sv_2mortal((SV *) newHV ());
hv_store( info_hash, "nlinks", 6, newSVuv( info->nlinks ), 0 );
hv_store( info_hash, "max_corder", 10, newSViv( info->max_corder ), 0 );
hv_store( info_hash, "storage_type", 12, newSViv( info->storage_type ), 0 );
hv_store( info_hash, "mounted", 7, newSVuv( info->mounted ), 0 );
RETVAL = newRV((SV *)info_hash);
}
free(info);
OUTPUT:
RETVAL
#----------------------------------------------------------------------------#
SV *
H5Gget_info_by_name(loc_id, group_name, lapl_id)
hid_t loc_id
char *group_name
hid_t lapl_id
PREINIT:
herr_t ret;
HV *info_hash;
H5G_info_t *info;
CODE:
info = (H5G_info_t *)malloc(sizeof(H5G_info_t));
ret = H5Gget_info_by_name(loc_id, group_name, info, lapl_id);
if (ret < 0) {
RETVAL = newSViv(ret);
}
else {
info_hash = (HV *) sv_2mortal((SV *) newHV ());
hv_store( info_hash, "nlinks", 6, newSVuv( info->nlinks ), 0 );
hv_store( info_hash, "max_corder", 10, newSViv( info->max_corder ), 0 );
hv_store( info_hash, "storage_type", 12, newSViv( info->storage_type ), 0 );
hv_store( info_hash, "mounted", 7, newSVuv( info->mounted ), 0 );
RETVAL = newRV((SV *)info_hash);
}
free(info);
OUTPUT:
RETVAL
#----------------------------------------------------------------------------#
hid_t
H5Gopen(loc_id, name, gapl_id)
hid_t loc_id
char *name
hid_t gapl_id
CODE:
RETVAL = H5Gopen2(loc_id, name, gapl_id);
OUTPUT:
RETVAL
#############################################################################
# H5A API
#############################################################################
herr_t
H5Aclose(attr_id)
hid_t attr_id
CODE:
RETVAL = H5Aclose(attr_id);
OUTPUT:
RETVAL
#---------------------------------------------------------------------------#
htri_t
H5Aexists(obj_id, attr_name)
hid_t obj_id
char *attr_name
CODE:
RETVAL = H5Aexists(obj_id, attr_name);
OUTPUT:
RETVAL
#----------------------------------------------------------------------------#
htri_t
H5Aexists_by_name(loc_id, obj_name, attr_name, lapl_id)
hid_t loc_id
char *obj_name
char *attr_name
hid_t lapl_id
CODE:
RETVAL = H5Aexists_by_name(loc_id, obj_name, attr_name, lapl_id);
OUTPUT:
RETVAL
#----------------------------------------------------------------------------#
SV *
H5Aget_info(attr_id)
hid_t attr_id
PREINIT:
herr_t ret;
HV *info_hash;
H5A_info_t *info;
CODE:
info = (H5A_info_t *)malloc(sizeof(H5A_info_t));
ret = H5Aget_info(attr_id, info);
if (ret < 0) {
RETVAL = newSViv(ret);
}
else {
info_hash = (HV *) sv_2mortal((SV *) newHV ());
hv_store( info_hash, "corder_valid", 12, newSVuv( info->corder_valid ), 0 );
hv_store( info_hash, "corder", 6, newSVuv( info->corder ), 0 );
hv_store( info_hash, "cset", 4, newSViv( info->cset ), 0 );
hv_store( info_hash, "data_size", 9, newSVuv( info->data_size ), 0 );
RETVAL = newRV((SV *)info_hash);
}
free(info);
OUTPUT:
RETVAL
#----------------------------------------------------------------------------#
SV *
H5Aget_info_by_idx(loc_id, obj_name, idx_type, order, n, lapl_id)
hid_t loc_id
char *obj_name
H5_index_t idx_type
H5_iter_order_t order
hsize_t n
hid_t lapl_id
PREINIT:
herr_t ret;
HV *info_hash;
H5A_info_t *info;
CODE:
info = (H5A_info_t *)malloc(sizeof(H5A_info_t));
ret = H5Aget_info_by_idx(loc_id, obj_name, idx_type, order, n, info, lapl_id);
if (ret < 0) {
RETVAL = newSViv(ret);
}
else {
info_hash = (HV *) sv_2mortal((SV *) newHV ());
hv_store( info_hash, "corder_valid", 12, newSVuv( info->corder_valid ), 0 );
hv_store( info_hash, "corder", 6, newSVuv( info->corder ), 0 );
hv_store( info_hash, "cset", 4, newSViv( info->cset ), 0 );
hv_store( info_hash, "data_size", 9, newSVuv( info->data_size ), 0 );
RETVAL = newRV((SV *)info_hash);
}
free(info);
OUTPUT:
RETVAL
#----------------------------------------------------------------------------#
SV *
H5Aget_info_by_name(loc_id, obj_name, attr_name, lapl_id)
hid_t loc_id
char *obj_name
char *attr_name
hid_t lapl_id
PREINIT:
herr_t ret;
HV *info_hash;
H5A_info_t *info;
CODE:
info = (H5A_info_t *)malloc(sizeof(H5A_info_t));
ret = H5Aget_info_by_name(loc_id, obj_name, attr_name, info, lapl_id);
if (ret < 0) {
RETVAL = newSViv(ret);
}
else {
info_hash = (HV *) sv_2mortal((SV *) newHV ());
hv_store( info_hash, "corder_valid", 12, newSVuv( info->corder_valid ), 0 );
hv_store( info_hash, "corder", 6, newSVuv( info->corder ), 0 );
hv_store( info_hash, "cset", 4, newSViv( info->cset ), 0 );
hv_store( info_hash, "data_size", 9, newSVuv( info->data_size ), 0 );
RETVAL = newRV((SV *)info_hash);
}
free(info);
OUTPUT:
RETVAL
#---------------------------------------------------------------------------#
SV *
H5Aget_name(attr_id)
hid_t attr_id
INIT:
char *name;
SV *data;
CODE:
size_t size = H5Aget_name(
attr_id,
0,
NULL
) + 1;
name = (char *)malloc(sizeof(char)*size);
H5Aget_name(
attr_id,
size,
name
);
data = newSVpv(name, 0);
RETVAL = data;
free(name);
OUTPUT:
RETVAL
#---------------------------------------------------------------------------#
hid_t
H5Aget_space(attr_id)
hid_t attr_id
CODE:
RETVAL = H5Aget_space(attr_id);
OUTPUT:
RETVAL
#---------------------------------------------------------------------------#
hid_t
H5Aget_type(attr_id)
hid_t attr_id
CODE:
RETVAL = H5Aget_type(attr_id);
OUTPUT:
RETVAL
#----------------------------------------------------------------------------#
hid_t
H5Aopen(obj_id, attr_name, aapl_id)
hid_t obj_id
char *attr_name
hid_t aapl_id
CODE:
RETVAL = H5Aopen(obj_id, attr_name, aapl_id);
OUTPUT:
RETVAL
#---------------------------------------------------------------------------#
hid_t
H5Aopen_by_idx(loc_id, obj_name, idx_type, order, n, aapl_id, lapl_id)
hid_t loc_id
char *obj_name
H5_index_t idx_type
H5_iter_order_t order
hsize_t n
hid_t aapl_id
hid_t lapl_id
CODE:
RETVAL = H5Aopen_by_idx(loc_id, obj_name, idx_type, order, n, aapl_id, lapl_id);
OUTPUT:
RETVAL
#----------------------------------------------------------------------------#
hid_t
H5Aopen_by_name(loc_id, obj_name, attr_name, aapl_id, lapl_id)
hid_t loc_id
char *obj_name
char *attr_name
hid_t aapl_id
hid_t lapl_id
CODE:
RETVAL = H5Aopen_by_name(loc_id, obj_name, attr_name, aapl_id, lapl_id);
OUTPUT:
RETVAL
#---------------------------------------------------------------------------#
AV *
H5Aread(attr_id)
hid_t attr_id;
PREINIT:
AV *data;
SV *elem;
hssize_t npoints;
int i;
hid_t attr_space_id;
hid_t type;
hid_t native;
H5T_class_t class;
H5S_sel_type sel_type;
int n_dims;
INIT:
if (attr_id < 0)
XSRETURN_UNDEF;
CODE:
type = H5Aget_type(attr_id);
class = H5Tget_class(type);
native = H5Tget_native_type(type, H5T_DIR_ASCEND);
data = (AV *)sv_2mortal((SV *)newAV());
attr_space_id = H5Aget_space(attr_id);
sel_type = H5Sget_select_type(attr_space_id);
if (sel_type != H5S_SEL_ALL) {
croak( "H5S selections are not yet supported\n" );
}
n_dims = H5Sget_simple_extent_ndims(attr_space_id);
if (n_dims > 1) {
croak( "ERROR: Multidimensional attributes (n=%i) not yet supported\n", n_dims );
}
npoints = H5Sget_simple_extent_npoints(attr_space_id);
hsize_t size;
size = H5Tget_size(type);
int sign;
sign = H5Tget_sign(type);
if (class == H5T_INTEGER) {
if (size == 1) {
if (sign == H5T_SGN_NONE) {
uint8_t *read_data;
read_data = (uint8_t *) malloc(sizeof(uint8_t) * npoints);
H5Aread(attr_id, native, read_data);
for (i = 0; i < npoints; i++) {
elem = newSVuv(read_data[i]);
av_store(data, i, elem);
}
free(read_data);
}
else if (sign == H5T_SGN_2) {
int8_t *read_data;
read_data = (int8_t *) malloc(sizeof(int8_t) * npoints);
H5Aread(attr_id, native, read_data);
for (i = 0; i < npoints; i++) {
elem = newSViv(read_data[i]);
av_store(data, i, elem);
}
free(read_data);
}
}
else if (size == 2) {
if (sign == H5T_SGN_NONE) {
uint16_t *read_data;
read_data = (uint16_t *) malloc(sizeof(uint16_t) * npoints);
H5Aread(attr_id, native, read_data);
for (i = 0; i < npoints; i++) {
elem = newSVuv(read_data[i]);
av_store(data, i, elem);
}
free(read_data);
}
else if (sign == H5T_SGN_2) {
int16_t *read_data;
read_data = (int16_t *) malloc(sizeof(int16_t) * npoints);
H5Aread(attr_id, native, read_data);
for (i = 0; i < npoints; i++) {
elem = newSViv(read_data[i]);
av_store(data, i, elem);
}
free(read_data);
}
}
else if (size == 4) {
if (sign == H5T_SGN_NONE) {
uint32_t *read_data;
read_data = (uint32_t *) malloc(sizeof(uint32_t) * npoints);
H5Aread(attr_id, native, read_data);
for (i = 0; i < npoints; i++) {
elem = newSVuv(read_data[i]);
av_store(data, i, elem);
}
free(read_data);
}
else if (sign == H5T_SGN_2) {
int32_t *read_data;
read_data = (int32_t *) malloc(sizeof(int32_t) * npoints);
H5Aread(attr_id, native, read_data);
for (i = 0; i < npoints; i++) {
elem = newSViv(read_data[i]);
av_store(data, i, elem);
}
free(read_data);
}
}
else if (size == 8) {
if (sign == H5T_SGN_NONE) {
uint64_t *read_data;
read_data = (uint64_t *) malloc(sizeof(uint64_t) * npoints);
H5Aread(attr_id, native, read_data);
for (i = 0; i < npoints; i++) {
elem = newSVuv(read_data[i]);
av_store(data, i, elem);
}
free(read_data);
}
else if (sign == H5T_SGN_2) {
int64_t *read_data;
read_data = (int64_t *) malloc(sizeof(int64_t) * npoints);
H5Aread(attr_id, native, read_data);
for (i = 0; i < npoints; i++) {
elem = newSViv(read_data[i]);
av_store(data, i, elem);
}
free(read_data);
}
}
else {
croak( "Unsupported integer size: %i", size );
}
}
else if (class == H5T_FLOAT) {
if (size == 4) {
float *read_data;
read_data = (float *) malloc(sizeof(float) * npoints);
H5Aread(attr_id, native, read_data);
for (i = 0; i < npoints; i++) {
elem = newSVnv(read_data[i]);
av_store(data, i, elem);
}
free(read_data);
}
else if (size == 8) {
double *read_data;
read_data = (double *) malloc(sizeof(double) * npoints);
H5Aread(attr_id, native, read_data);
for (i = 0; i < npoints; i++) {
elem = newSVnv(read_data[i]);
av_store(data, i, elem);
}
free(read_data);
}
else {
croak( "Unsupported floating point size: %i", size );
}
}
else if (class == H5T_STRING) {
char *read_data;
read_data = (char *) malloc(size*sizeof(char)*npoints);
H5Aread(attr_id, native, read_data);
char *j;
j = read_data;
for (i = 0; i < npoints; i++) {
char field[size];
strcpy(field, j);
elem = newSVpv(field, 0);
av_store(data, i, elem);
j += size;
}
free(read_data);
}
H5Sclose(attr_space_id);
H5Tclose(type);
H5Tclose(native);
RETVAL = data;
OUTPUT:
RETVAL
#############################################################################
# H5D API
#############################################################################
AV *
H5Dread(dataset_id)
hid_t dataset_id;
PREINIT:
AV *data;
SV *elem;
hssize_t npoints;
int i;
hid_t dataset_space_id;
hid_t type;
hid_t native;
H5T_class_t class;
H5S_sel_type sel_type;
int n_dims;
INIT:
if (dataset_id < 0)
XSRETURN_UNDEF;
CODE:
type = H5Dget_type(dataset_id);
class = H5Tget_class(type);
native = H5Tget_native_type(type, H5T_DIR_ASCEND);
data = (AV *)sv_2mortal((SV *)newAV());
dataset_space_id = H5Dget_space(dataset_id);
sel_type = H5Sget_select_type(dataset_space_id);
if (sel_type != H5S_SEL_ALL) {
croak( "H5S selections are not yet supported\n" );
}
n_dims = H5Sget_simple_extent_ndims(dataset_space_id);
if (n_dims > 1) {
croak( "ERROR: Multidimensional attributes (n=%i) not yet supported\n", n_dims );
}
npoints = H5Sget_simple_extent_npoints(dataset_space_id);
hsize_t size;
size = H5Tget_size(type);
int sign;
sign = H5Tget_sign(type);
if (class == H5T_INTEGER) {
if (size == 1) {
if (sign == H5T_SGN_NONE) {
uint8_t *read_data;
read_data = (uint8_t *) malloc(sizeof(uint8_t) * npoints);
H5Dread(dataset_id, native, H5S_ALL, H5S_ALL, H5P_DEFAULT, read_data);
for (i = 0; i < npoints; i++) {
elem = newSVuv(read_data[i]);
av_store(data, i, elem);
}
free(read_data);
}
else if (sign == H5T_SGN_2) {
int8_t *read_data;
read_data = (int8_t *) malloc(sizeof(int8_t) * npoints);
H5Dread(dataset_id, native, H5S_ALL, H5S_ALL, H5P_DEFAULT, read_data);
for (i = 0; i < npoints; i++) {
elem = newSViv(read_data[i]);
av_store(data, i, elem);
}
free(read_data);
}
}
else if (size == 2) {
if (sign == H5T_SGN_NONE) {
uint16_t *read_data;
read_data = (uint16_t *) malloc(sizeof(uint16_t) * npoints);
H5Dread(dataset_id, native, H5S_ALL, H5S_ALL, H5P_DEFAULT, read_data);
for (i = 0; i < npoints; i++) {
elem = newSVuv(read_data[i]);
av_store(data, i, elem);
}
free(read_data);
}
else if (sign == H5T_SGN_2) {
int16_t *read_data;
read_data = (int16_t *) malloc(sizeof(int16_t) * npoints);
H5Dread(dataset_id, native, H5S_ALL, H5S_ALL, H5P_DEFAULT, read_data);
for (i = 0; i < npoints; i++) {
elem = newSViv(read_data[i]);
av_store(data, i, elem);
}
free(read_data);
}
}
else if (size == 4) {
if (sign == H5T_SGN_NONE) {
uint32_t *read_data;
read_data = (uint32_t *) malloc(sizeof(uint32_t) * npoints);
H5Dread(dataset_id, native, H5S_ALL, H5S_ALL, H5P_DEFAULT, read_data);
for (i = 0; i < npoints; i++) {
elem = newSVuv(read_data[i]);
av_store(data, i, elem);
}
free(read_data);
}
else if (sign == H5T_SGN_2) {
int32_t *read_data;
read_data = (int32_t *) malloc(sizeof(int32_t) * npoints);
H5Dread(dataset_id, native, H5S_ALL, H5S_ALL, H5P_DEFAULT, read_data);
for (i = 0; i < npoints; i++) {
elem = newSViv(read_data[i]);
av_store(data, i, elem);
}
free(read_data);
}
}
else {
if (sign == H5T_SGN_NONE) {
uint64_t *read_data;
read_data = (uint64_t *) malloc(sizeof(uint64_t) * npoints);
H5Dread(dataset_id, native, H5S_ALL, H5S_ALL, H5P_DEFAULT, read_data);
for (i = 0; i < npoints; i++) {
elem = newSVuv(read_data[i]);
av_store(data, i, elem);
}
free(read_data);
}
else if (sign == H5T_SGN_2) {
int64_t *read_data;
read_data = (int64_t *) malloc(sizeof(int64_t) * npoints);
H5Dread(dataset_id, native, H5S_ALL, H5S_ALL, H5P_DEFAULT, read_data);
for (i = 0; i < npoints; i++) {
elem = newSViv(read_data[i]);
av_store(data, i, elem);
}
free(read_data);
}
}
}
else if (class == H5T_FLOAT) {
double *read_data;
read_data = (double *) malloc(sizeof(double) * npoints);
H5Dread(dataset_id, native, H5S_ALL, H5S_ALL, H5P_DEFAULT, read_data);
for (i = 0; i < npoints; i++) {
elem = newSVnv(read_data[i]);
av_store(data, i, elem);
}
free(read_data);
}
else if (class == H5T_STRING) {
hsize_t size;
size = H5Tget_size(type);
char *read_data;
read_data = (char *) malloc(size*npoints);
H5Dread(dataset_id, native, H5S_ALL, H5S_ALL, H5P_DEFAULT, read_data);
char *j;
j = read_data;
for (i = 0; i < npoints; i++) {
char field[size];
strcpy(field, j);
elem = newSVpv(field, 0);
av_store(data, i, elem);
j += size;
}
free(read_data);
}
else {
av_store(data, 0, newSViv(0));
}
H5Sclose(dataset_space_id);
H5Tclose(type);
H5Tclose(native);
RETVAL = data;
OUTPUT:
RETVAL
#---------------------------------------------------------------------------#
hid_t
H5Dopen(loc_id, name, dapl_id)
hid_t loc_id
char *name
hid_t dapl_id
CODE:
RETVAL = H5Dopen2(loc_id, name, dapl_id);
OUTPUT:
RETVAL
#---------------------------------------------------------------------------#
herr_t
H5Dclose(id)
hid_t id
#---------------------------------------------------------------------------#
hid_t
H5Dget_space(id)
hid_t id;
#---------------------------------------------------------------------------#
hid_t
H5Dget_type(id)
hid_t id;
#############################################################################
# H5T API
#############################################################################
H5T_class_t
H5Tget_class(id)
hid_t id
#---------------------------------------------------------------------------#
hid_t
H5Tget_native_type(id, direction)
hid_t id
H5T_direction_t direction
#---------------------------------------------------------------------------#
hid_t
H5Tget_super(id)
hid_t id
#---------------------------------------------------------------------------#
herr_t
H5Tclose(id)
hid_t id
#---------------------------------------------------------------------------#
hid_t
H5Tcopy(id)
hid_t id
#---------------------------------------------------------------------------#
size_t
H5Tget_precision(id)
hid_t id
#---------------------------------------------------------------------------#
H5T_order_t
H5Tget_order(id)
hid_t id
#---------------------------------------------------------------------------#
H5T_sign_t
H5Tget_sign(id)
hid_t id
#---------------------------------------------------------------------------#
H5T_str_t
H5Tget_strpad(id)
hid_t id
#---------------------------------------------------------------------------#
H5T_cset_t
H5Tget_cset(id)
hid_t id
#---------------------------------------------------------------------------#
size_t
H5Tget_size(id)
hid_t id
#############################################################################
# H5L API
#############################################################################
SV *
H5Lget_name_by_idx(loc_id, group_name, index_field, order, n, lapl_id)
hid_t loc_id
char *group_name