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-rw-r--r--tools/h5repack/h5repack_copy.c773
1 files changed, 765 insertions, 8 deletions
diff --git a/tools/h5repack/h5repack_copy.c b/tools/h5repack/h5repack_copy.c
index 6b3e4d0..5dbb5ce 100644
--- a/tools/h5repack/h5repack_copy.c
+++ b/tools/h5repack/h5repack_copy.c
@@ -23,18 +23,23 @@
extern char *progname;
+static int do_create_refs;
+
#define PER(A,B) { per = 0; \
if (A!=0) \
- per = (float)fabs(1-( (float)B / (float)A )); \
+ per = (float)fabs( ((float)B - (float)A) / (float) A ); \
}
#define FORMAT_OBJ " %-21s %s\n" /* obj type, name */
#define FORMAT_OBJ_ATTR " %-21s %s\n" /* obj type, name */
-
-static
-int do_hardlinks(hid_t fidout,trav_table_t *travt);
+/* local functions */
+static int do_hardlinks(hid_t fidout,trav_table_t *travt);
+static void close_obj(H5G_obj_t obj_type, hid_t obj_id);
+static int do_copy_refobjs(hid_t fidin, hid_t fidout,trav_table_t *travt,pack_opt_t *options);
+static int copy_refs_attr(hid_t loc_in,hid_t loc_out,pack_opt_t *options,trav_table_t *travt,hid_t fidout);
+static const char* MapIdToName(hid_t refobj_id,trav_table_t *travt);
/*-------------------------------------------------------------------------
* Function: print_dataset_info
@@ -88,7 +93,6 @@ static void print_dataset_info(hid_t dcpl_id,
NULL);
#endif /* H5_WANT_H5_V1_6_COMPAT */
-
switch (filtn)
{
default:
@@ -207,6 +211,18 @@ int copy_objects(const char* fnamein,
}
/*-------------------------------------------------------------------------
+ * do the copy of referenced objects in a second sweep if needed (references
+ * detected in the first traversal)
+ *-------------------------------------------------------------------------
+ */
+ if (do_create_refs){
+ if(do_copy_refobjs(fidin,fidout,travt,options)<0) {
+ error_msg(progname, "<%s>: Could not copy data to: %s\n", fnamein, fnameout);
+ goto out;
+ }
+ }
+
+/*-------------------------------------------------------------------------
* create hard links
*-------------------------------------------------------------------------
*/
@@ -265,6 +281,12 @@ out:
* October 2006: Read/write using the file type by default.
* Read/write by hyperslabs for big datasets.
*
+ * November 2006: Use H5Ocopy in the copy of objects. The logic for using
+ * H5Ocopy or not is if the input DCPL has filters or non default layout or these are
+ * requested by the user then use read/write else use H5Ocopy.
+ * A detection is made for the cases where the recreation of references is needed
+ * in a second sweep of the file
+ *
*-------------------------------------------------------------------------
*/
@@ -444,7 +466,11 @@ int do_copy_objects(hid_t fidin,
* in a second traversal of the output file
*-------------------------------------------------------------------------
*/
- if ( (H5T_REFERENCE!=H5Tget_class(wtype_id)))
+ if (H5T_REFERENCE==H5Tget_class(wtype_id))
+ {
+ do_create_refs = 1;
+ }
+ else /* H5T_REFERENCE */
{
/* get the storage size of the input dataset */
dsize_in=H5Dget_storage_size(dset_in);
@@ -629,8 +655,8 @@ int do_copy_objects(hid_t fidin,
if (H5Dclose(dset_out)<0)
goto error;
- }/*H5T_STD_REF_OBJ*/
- }/*can_read*/
+ }/*H5T_REFERENCE*/
+ }/*h5tools_canreadf*/
/*-------------------------------------------------------------------------
@@ -1029,3 +1055,734 @@ int do_hardlinks(hid_t fidout,trav_table_t *travt)
return 0;
}
+
+
+
+/*-------------------------------------------------------------------------
+ * Function: do_copy_refobjs
+ *
+ * Purpose: duplicate all referenced HDF5 objects in the file in a second traversal
+ *
+ * Return: 0, ok, -1 no
+ *
+ * Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu
+ *
+ * Date: December, 10, 2003
+ *
+ *-------------------------------------------------------------------------
+ */
+
+static
+int do_copy_refobjs(hid_t fidin,
+ hid_t fidout,
+ trav_table_t *travt,
+ pack_opt_t *options) /* repack options */
+{
+ hid_t grp_in=-1; /* read group ID */
+ hid_t grp_out=-1; /* write group ID */
+ hid_t dset_in=-1; /* read dataset ID */
+ hid_t dset_out=-1; /* write dataset ID */
+ hid_t type_in=-1; /* named type ID */
+ hid_t dcpl_id=-1; /* dataset creation property list ID */
+ hid_t space_id=-1; /* space ID */
+ hid_t ftype_id=-1; /* file type ID */
+ hid_t wtype_id=-1; /* read/write type ID */
+ size_t msize; /* size of type */
+ hsize_t nelmts; /* number of elements in dataset */
+ int rank; /* rank of dataset */
+ hsize_t dims[H5S_MAX_RANK];/* dimensions of dataset */
+ int next; /* external files */
+ int i, j;
+
+/*-------------------------------------------------------------------------
+ * browse
+ *-------------------------------------------------------------------------
+ */
+
+ for ( i = 0; i < travt->nobjs; i++)
+ {
+ switch ( travt->objs[i].type )
+ {
+
+ case H5G_GROUP:
+
+ break;
+
+ /*-------------------------------------------------------------------------
+ * H5G_DATASET
+ *-------------------------------------------------------------------------
+ */
+ case H5G_DATASET:
+
+ if ((dset_in=H5Dopen(fidin,travt->objs[i].name))<0)
+ goto error;
+ if ((space_id=H5Dget_space(dset_in))<0)
+ goto error;
+ if ((ftype_id=H5Dget_type (dset_in))<0)
+ goto error;
+ if ((dcpl_id=H5Dget_create_plist(dset_in))<0)
+ goto error;
+ if ( (rank=H5Sget_simple_extent_ndims(space_id))<0)
+ goto error;
+ if ( H5Sget_simple_extent_dims(space_id,dims,NULL)<0)
+ goto error;
+ nelmts=1;
+ for (j=0; j<rank; j++)
+ nelmts*=dims[j];
+
+ if (options->use_native==1)
+ wtype_id = h5tools_get_native_type(ftype_id);
+ else
+ wtype_id = H5Tcopy(ftype_id);
+
+ if ((msize=H5Tget_size(wtype_id))==0)
+ goto error;
+
+/*-------------------------------------------------------------------------
+ * check for external files
+ *-------------------------------------------------------------------------
+ */
+ if ((next=H5Pget_external_count (dcpl_id))<0)
+ goto error;
+/*-------------------------------------------------------------------------
+ * check if the dataset creation property list has filters that
+ * are not registered in the current configuration
+ * 1) the external filters GZIP and SZIP might not be available
+ * 2) the internal filters might be turned off
+ *-------------------------------------------------------------------------
+ */
+ if (next==0 && h5tools_canreadf((NULL),dcpl_id)==1)
+ {
+/*-------------------------------------------------------------------------
+ * test for a valid output dataset
+ *-------------------------------------------------------------------------
+ */
+ dset_out = FAIL;
+
+/*-------------------------------------------------------------------------
+ * object references are a special case
+ * we cannot just copy the buffers, but instead we recreate the reference
+ *-------------------------------------------------------------------------
+ */
+ if (H5Tequal(wtype_id, H5T_STD_REF_OBJ))
+ {
+ H5G_obj_t obj_type;
+ hid_t refobj_id;
+ hobj_ref_t *refbuf=NULL; /* buffer for object references */
+ hobj_ref_t *buf=NULL;
+ const char* refname;
+ unsigned u;
+
+ /*-------------------------------------------------------------------------
+ * read to memory
+ *-------------------------------------------------------------------------
+ */
+
+ if (nelmts)
+ {
+ buf=(void *) HDmalloc((unsigned)(nelmts*msize));
+ if ( buf==NULL){
+ error_msg(progname, "cannot read into memory\n" );
+ goto error;
+ }
+ if (H5Dread(dset_in,wtype_id,H5S_ALL,H5S_ALL,H5P_DEFAULT,buf)<0)
+ goto error;
+
+ if ((obj_type = H5Rget_obj_type(dset_in,H5R_OBJECT,buf))<0)
+ goto error;
+ refbuf=HDmalloc((unsigned)nelmts*msize);
+ if ( refbuf==NULL){
+ error_msg(progname, "cannot allocate memory\n" );
+ goto error;
+ }
+ for ( u=0; u<nelmts; u++)
+ {
+ H5E_BEGIN_TRY {
+ if ((refobj_id = H5Rdereference(dset_in,H5R_OBJECT,&buf[u]))<0)
+ continue;
+ } H5E_END_TRY;
+ /* get the name. a valid name could only occur in the
+ second traversal of the file */
+ if ((refname=MapIdToName(refobj_id,travt))!=NULL)
+ {
+ /* create the reference, -1 parameter for objects */
+ if (H5Rcreate(&refbuf[u],fidout,refname,H5R_OBJECT,-1)<0)
+ goto error;
+ if (options->verbose)
+ printf("object <%s> object reference created to <%s>\n",
+ travt->objs[i].name,
+ refname);
+ }/*refname*/
+ close_obj(obj_type,refobj_id);
+ }/* u */
+ }/*nelmts*/
+
+ /*-------------------------------------------------------------------------
+ * create/write dataset/close
+ *-------------------------------------------------------------------------
+ */
+ if ((dset_out=H5Dcreate(fidout,travt->objs[i].name,wtype_id,space_id,dcpl_id))<0)
+ goto error;
+ if (nelmts) {
+ if (H5Dwrite(dset_out,wtype_id,H5S_ALL,H5S_ALL,H5P_DEFAULT,refbuf)<0)
+ goto error;
+ }
+
+ if (buf)
+ free(buf);
+ if (refbuf)
+ free(refbuf);
+
+ }/*H5T_STD_REF_OBJ*/
+
+/*-------------------------------------------------------------------------
+ * dataset region references
+ *-------------------------------------------------------------------------
+ */
+ else if (H5Tequal(wtype_id, H5T_STD_REF_DSETREG))
+ {
+ H5G_obj_t obj_type;
+ hid_t refobj_id;
+ hdset_reg_ref_t *refbuf=NULL; /* input buffer for region references */
+ hdset_reg_ref_t *buf=NULL; /* output buffer */
+ const char* refname;
+ unsigned u;
+
+ /*-------------------------------------------------------------------------
+ * read input to memory
+ *-------------------------------------------------------------------------
+ */
+ if (nelmts)
+ {
+ buf=(void *) HDmalloc((unsigned)(nelmts*msize));
+ if ( buf==NULL){
+ error_msg(progname, "cannot read into memory\n" );
+ goto error;
+ }
+ if (H5Dread(dset_in,wtype_id,H5S_ALL,H5S_ALL,H5P_DEFAULT,buf)<0)
+ goto error;
+ if ((obj_type = H5Rget_obj_type(dset_in,H5R_DATASET_REGION,buf))<0)
+ goto error;
+
+ /*-------------------------------------------------------------------------
+ * create output
+ *-------------------------------------------------------------------------
+ */
+
+ refbuf=HDcalloc(sizeof(hdset_reg_ref_t),(size_t)nelmts); /*init to zero */
+ if ( refbuf==NULL){
+ error_msg(progname, "cannot allocate memory\n" );
+ goto error;
+ }
+ for ( u=0; u<nelmts; u++)
+ {
+ H5E_BEGIN_TRY {
+ if ((refobj_id = H5Rdereference(dset_in,H5R_DATASET_REGION,&buf[u]))<0)
+ continue;
+ } H5E_END_TRY;
+
+ /* get the name. a valid name could only occur in the
+ second traversal of the file */
+ if ((refname=MapIdToName(refobj_id,travt))!=NULL)
+ {
+ hid_t region_id; /* region id of the referenced dataset */
+ if ((region_id = H5Rget_region(dset_in,H5R_DATASET_REGION,&buf[u]))<0)
+ goto error;
+ /* create the reference, we need the space_id */
+ if (H5Rcreate(&refbuf[u],fidout,refname,H5R_DATASET_REGION,region_id)<0)
+ goto error;
+ if (H5Sclose(region_id)<0)
+ goto error;
+ if (options->verbose)
+ printf("object <%s> region reference created to <%s>\n",
+ travt->objs[i].name,
+ refname);
+ }/*refname*/
+ close_obj(obj_type,refobj_id);
+ }/* u */
+ }/*nelmts*/
+
+ /*-------------------------------------------------------------------------
+ * create/write dataset/close
+ *-------------------------------------------------------------------------
+ */
+ if ((dset_out=H5Dcreate(fidout,travt->objs[i].name,wtype_id,space_id,dcpl_id))<0)
+ goto error;
+ if (nelmts) {
+ if (H5Dwrite(dset_out,wtype_id,H5S_ALL,H5S_ALL,H5P_DEFAULT,refbuf)<0)
+ goto error;
+ }
+
+ if (buf)
+ free(buf);
+ if (refbuf)
+ free(refbuf);
+ } /* H5T_STD_REF_DSETREG */
+
+
+/*-------------------------------------------------------------------------
+ * not references, open previously created object in 1st traversal
+ *-------------------------------------------------------------------------
+ */
+ else
+ {
+ if ((dset_out=H5Dopen(fidout,travt->objs[i].name))<0)
+ goto error;
+ }
+
+ assert(dset_out!=FAIL);
+
+/*-------------------------------------------------------------------------
+ * copy referenced objects in attributes
+ *-------------------------------------------------------------------------
+ */
+ if (copy_refs_attr(dset_in,dset_out,options,travt,fidout)<0)
+ goto error;
+
+
+
+ if (H5Dclose(dset_out)<0)
+ goto error;
+
+ }/*can_read*/
+
+ /*-------------------------------------------------------------------------
+ * close
+ *-------------------------------------------------------------------------
+ */
+
+ if (H5Tclose(ftype_id)<0)
+ goto error;
+ if (H5Tclose(wtype_id)<0)
+ goto error;
+ if (H5Pclose(dcpl_id)<0)
+ goto error;
+ if (H5Sclose(space_id)<0)
+ goto error;
+ if (H5Dclose(dset_in)<0)
+ goto error;
+
+
+ break;
+
+
+ case H5G_TYPE:
+ case H5G_LINK:
+ case H5G_UDLINK:
+
+ /*nothing to do */
+ break;
+
+ default:
+
+ break;
+ }
+ }
+
+
+/*-------------------------------------------------------------------------
+ * the root is a special case, we get an ID for the root group
+ * and copy its attributes using that ID
+ * it must be done last, because the attributes might contain references to
+ * objects in the object list
+ *-------------------------------------------------------------------------
+ */
+
+ if ((grp_out = H5Gopen(fidout,"/"))<0)
+ goto error;
+
+ if ((grp_in = H5Gopen(fidin,"/"))<0)
+ goto error;
+
+ if (copy_refs_attr(grp_in,grp_out,options,travt,fidout)<0)
+ goto error;
+
+ if (H5Gclose(grp_out)<0)
+ goto error;
+ if (H5Gclose(grp_in)<0)
+ goto error;
+
+
+ return 0;
+
+error:
+ H5E_BEGIN_TRY {
+ H5Gclose(grp_in);
+ H5Gclose(grp_out);
+ H5Pclose(dcpl_id);
+ H5Sclose(space_id);
+ H5Dclose(dset_in);
+ H5Dclose(dset_out);
+ H5Tclose(ftype_id);
+ H5Tclose(wtype_id);
+ H5Tclose(type_in);
+ } H5E_END_TRY;
+ return -1;
+
+}
+
+
+
+/*-------------------------------------------------------------------------
+ * Function: copy_refs_attr
+ *
+ * Purpose: duplicate all referenced HDF5 objects located in attributes
+ * relative to LOC_IN, which is obtained either from
+ * loc_id = H5Gopen( fid, name);
+ * loc_id = H5Dopen( fid, name);
+ * loc_id = H5Topen( fid, name);
+ *
+ * Return: 0, ok, -1 no
+ *
+ * Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu
+ *
+ * Date: October, 28, 2003
+ *
+ *-------------------------------------------------------------------------
+ */
+
+static int copy_refs_attr(hid_t loc_in,
+ hid_t loc_out,
+ pack_opt_t *options,
+ trav_table_t *travt,
+ hid_t fidout /* for saving references */
+ )
+{
+ hid_t attr_id; /* attr ID */
+ hid_t attr_out; /* attr ID */
+ hid_t space_id; /* space ID */
+ hid_t ftype_id; /* file type ID */
+ hid_t wtype_id; /* read/write type ID */
+ size_t msize; /* size of type */
+ hsize_t nelmts; /* number of elements in dataset */
+ int rank; /* rank of dataset */
+ hsize_t dims[H5S_MAX_RANK];/* dimensions of dataset */
+ char name[255];
+ int n, j;
+ unsigned u;
+
+ if ((n = H5Aget_num_attrs(loc_in))<0)
+ goto error;
+
+ for ( u = 0; u < (unsigned)n; u++)
+ {
+
+/*-------------------------------------------------------------------------
+ * open
+ *-------------------------------------------------------------------------
+ */
+ /* open attribute */
+ if ((attr_id = H5Aopen_idx(loc_in, u))<0)
+ goto error;
+
+ /* get name */
+ if (H5Aget_name( attr_id, 255, name )<0)
+ goto error;
+
+ /* get the file datatype */
+ if ((ftype_id = H5Aget_type( attr_id )) < 0 )
+ goto error;
+
+ /* get the dataspace handle */
+ if ((space_id = H5Aget_space( attr_id )) < 0 )
+ goto error;
+
+ /* get dimensions */
+ if ( (rank = H5Sget_simple_extent_dims(space_id, dims, NULL)) < 0 )
+ goto error;
+
+
+ /*-------------------------------------------------------------------------
+ * elements
+ *-------------------------------------------------------------------------
+ */
+ nelmts=1;
+ for (j=0; j<rank; j++)
+ nelmts*=dims[j];
+
+ if (options->use_native==1)
+ wtype_id = h5tools_get_native_type(ftype_id);
+ else
+ wtype_id = H5Tcopy(ftype_id);
+
+ if ((msize=H5Tget_size(wtype_id))==0)
+ goto error;
+
+/*-------------------------------------------------------------------------
+ * object references are a special case
+ * we cannot just copy the buffers, but instead we recreate the reference
+ *-------------------------------------------------------------------------
+ */
+ if (H5Tequal(wtype_id, H5T_STD_REF_OBJ))
+ {
+ H5G_obj_t obj_type;
+ hid_t refobj_id;
+ hobj_ref_t *refbuf=NULL;
+ unsigned k;
+ const char* refname;
+ hobj_ref_t *buf=NULL;
+
+ /*-------------------------------------------------------------------------
+ * read input to memory
+ *-------------------------------------------------------------------------
+ */
+
+ if (nelmts)
+ {
+ buf=(void *) HDmalloc((unsigned)(nelmts*msize));
+ if ( buf==NULL){
+ error_msg(progname, "cannot read into memory\n" );
+ goto error;
+ }
+ if (H5Aread(attr_id,wtype_id,buf)<0)
+ goto error;
+
+ if ((obj_type = H5Rget_obj_type(attr_id,H5R_OBJECT,buf))<0)
+ goto error;
+ refbuf=HDmalloc((unsigned)nelmts*msize);
+ if ( refbuf==NULL){
+ error_msg(progname, "cannot allocate memory\n" );
+ goto error;
+ }
+ for ( k=0; k<nelmts; k++)
+ {
+ H5E_BEGIN_TRY {
+ if ((refobj_id = H5Rdereference(attr_id,H5R_OBJECT,&buf[k]))<0)
+ goto error;
+ } H5E_END_TRY;
+ /* get the name. a valid name could only occur in the
+ second traversal of the file */
+ if ((refname=MapIdToName(refobj_id,travt))!=NULL)
+ {
+ /* create the reference */
+ if (H5Rcreate(&refbuf[k],fidout,refname,H5R_OBJECT,-1)<0)
+ goto error;
+ if (options->verbose)
+ printf("object <%s> reference created to <%s>\n",name,refname);
+ }
+ close_obj(obj_type,refobj_id);
+ }/* k */
+ }/*nelmts*/
+
+ /*-------------------------------------------------------------------------
+ * copy
+ *-------------------------------------------------------------------------
+ */
+
+ if ((attr_out=H5Acreate(loc_out,name,ftype_id,space_id,H5P_DEFAULT))<0)
+ goto error;
+ if (nelmts) {
+ if(H5Awrite(attr_out,wtype_id,refbuf)<0)
+ goto error;
+ }
+
+ if (H5Aclose(attr_out)<0)
+ goto error;
+
+ if (refbuf)
+ free(refbuf);
+ if (buf)
+ free(buf);
+
+ }/*H5T_STD_REF_OBJ*/
+
+/*-------------------------------------------------------------------------
+ * dataset region references
+ *-------------------------------------------------------------------------
+ */
+ else if (H5Tequal(wtype_id, H5T_STD_REF_DSETREG))
+ {
+ H5G_obj_t obj_type;
+ hid_t refobj_id;
+ hdset_reg_ref_t *refbuf=NULL; /* input buffer for region references */
+ hdset_reg_ref_t *buf=NULL; /* output buffer */
+ const char* refname;
+ unsigned k;
+
+ /*-------------------------------------------------------------------------
+ * read input to memory
+ *-------------------------------------------------------------------------
+ */
+
+ if (nelmts)
+ {
+ buf=(void *) HDmalloc((unsigned)(nelmts*msize));
+ if ( buf==NULL){
+ error_msg(progname, "cannot read into memory\n" );
+ goto error;
+ }
+ if (H5Aread(attr_id,wtype_id,buf)<0)
+ goto error;
+ if ((obj_type = H5Rget_obj_type(attr_id,H5R_DATASET_REGION,buf))<0)
+ goto error;
+
+ /*-------------------------------------------------------------------------
+ * create output
+ *-------------------------------------------------------------------------
+ */
+
+ refbuf=HDcalloc(sizeof(hdset_reg_ref_t),(size_t)nelmts); /*init to zero */
+ if ( refbuf==NULL){
+ error_msg(progname, "cannot allocate memory\n" );
+ goto error;
+ }
+ for ( k=0; k<nelmts; k++)
+ {
+ H5E_BEGIN_TRY {
+ if ((refobj_id = H5Rdereference(attr_id,H5R_DATASET_REGION,&buf[k]))<0)
+ continue;
+ } H5E_END_TRY;
+ /* get the name. a valid name could only occur in the
+ second traversal of the file */
+ if ((refname=MapIdToName(refobj_id,travt))!=NULL)
+ {
+ hid_t region_id; /* region id of the referenced dataset */
+ if ((region_id = H5Rget_region(attr_id,H5R_DATASET_REGION,&buf[k]))<0)
+ goto error;
+ /* create the reference, we need the space_id */
+ if (H5Rcreate(&refbuf[k],fidout,refname,H5R_DATASET_REGION,region_id)<0)
+ goto error;
+ if (H5Sclose(region_id)<0)
+ goto error;
+ if (options->verbose)
+ printf("object <%s> region reference created to <%s>\n",name,refname);
+ }
+ close_obj(obj_type,refobj_id);
+ }/* k */
+ }/*nelmts */
+
+ /*-------------------------------------------------------------------------
+ * copy
+ *-------------------------------------------------------------------------
+ */
+
+ if ((attr_out=H5Acreate(loc_out,name,ftype_id,space_id,H5P_DEFAULT))<0)
+ goto error;
+ if (nelmts) {
+ if(H5Awrite(attr_out,wtype_id,refbuf)<0)
+ goto error;
+ }
+ if (H5Aclose(attr_out)<0)
+ goto error;
+ if (refbuf)
+ free(refbuf);
+ if (buf)
+ free(buf);
+ } /* H5T_STD_REF_DSETREG */
+
+/*-------------------------------------------------------------------------
+ * close
+ *-------------------------------------------------------------------------
+ */
+
+ if (H5Tclose(ftype_id)<0) goto error;
+ if (H5Tclose(wtype_id)<0) goto error;
+ if (H5Sclose(space_id)<0) goto error;
+ if (H5Aclose(attr_id)<0) goto error;
+ } /* u */
+
+ return 0;
+
+error:
+ H5E_BEGIN_TRY {
+ H5Tclose(ftype_id);
+ H5Tclose(wtype_id);
+ H5Sclose(space_id);
+ H5Aclose(attr_id);
+ H5Aclose(attr_out);
+ } H5E_END_TRY;
+ return -1;
+}
+
+/*-------------------------------------------------------------------------
+ * Function: close_obj
+ *
+ * Purpose: Auxiliary function to close an object
+ *
+ *-------------------------------------------------------------------------
+ */
+
+static void close_obj(H5G_obj_t obj_type, hid_t obj_id)
+{
+ H5E_BEGIN_TRY
+ {
+ switch (obj_type)
+ {
+ case H5G_GROUP:
+ H5Gclose(obj_id);
+ break;
+ case H5G_DATASET:
+ H5Dclose(obj_id);
+ break;
+ case H5G_TYPE:
+ H5Tclose(obj_id);
+ break;
+ default:
+ break;
+ }
+ } H5E_END_TRY;
+}
+
+/*-------------------------------------------------------------------------
+ * Function: MapIdToName
+ *
+ * Purpose: map an object ID to a name
+ *
+ *-------------------------------------------------------------------------
+ */
+
+static const char* MapIdToName(hid_t refobj_id,
+ trav_table_t *travt)
+{
+ hid_t id;
+ hid_t fid;
+ H5G_stat_t refstat; /* Stat for the refobj id */
+ H5G_stat_t objstat; /* Stat for objects in the file */
+ int i;
+
+ /* obtain information to identify the referenced object uniquely */
+ if(H5Gget_objinfo(refobj_id, ".", 0, &refstat) <0)
+ return NULL;
+
+ /* obtains the file ID given an object ID. This ID must be closed */
+ if ((fid = H5Iget_file_id(refobj_id))<0)
+ {
+ return NULL;
+ }
+
+ /* linear search */
+ for ( i=0; i<travt->nobjs; i++)
+ {
+ switch ( travt->objs[i].type )
+ {
+ default:
+ break;
+
+ /*-------------------------------------------------------------------------
+ * H5G_DATASET
+ *-------------------------------------------------------------------------
+ */
+
+ case H5G_DATASET:
+
+ if ((id = H5Dopen(fid,travt->objs[i].name))<0)
+ return NULL;
+ if(H5Gget_objinfo(id, ".", 0, &objstat) <0)
+ return NULL;
+ if (H5Dclose(id)<0)
+ return NULL;
+ if (!HDmemcmp(&refstat.fileno, &objstat.fileno, sizeof(refstat.fileno)) && !HDmemcmp(&refstat.objno, &objstat.objno, sizeof(refstat.objno)))
+ {
+ H5Fclose(fid);
+ return travt->objs[i].name;
+ }
+ break;
+ } /* switch */
+ } /* i */
+
+ if (H5Fclose(fid)<0)
+ return NULL;
+
+ return NULL;
+}
+