[svn-r2] Oops...

1 files changed, 125 insertions, 0 deletions

diff --git a/src/H5Gprivate.h b/src/H5Gprivate.h
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+/*-------------------------------------------------------------------------
+ * Copyright (C) 1997	National Center for Supercomputing Applications.
+ *                      All rights reserved.
+ *
+ *-------------------------------------------------------------------------
+ *
+ * Created:		H5Gprivate.h
+ * 			Jul 11 1997
+ * 			Robb Matzke <robb@maya.nuance.com>
+ *
+ * Purpose:		Private stuff for the H5G package (symbol tables).
+ *
+ * Modifications:	
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef _H5Gprivate_H
+#define _H5Gprivate_H
+
+#include "H5Gproto.h"		/*include public declarations		*/
+
+#include "H5Fprivate.h"		/*include packages needed by this header*/
+
+#define H5G_NODE_MAGIC	"SNOD"	/*symbol table node magic number	*/
+#define H5G_NODE_VERS	1	/*symbol table node version number	*/
+#define H5G_NODE_K	64	/*min degree.  max degree is twice this	*/
+#define H5G_HDR_SIZE(F)	8
+
+/*
+ * Various types of object header information can be cached in a symbol
+ * table entry (it's normal home is the object header to which the entry
+ * points).  This datatype determines what (if anything) is cached in the
+ * symbol table entry.
+ */
+typedef enum H5G_type_t {
+   H5G_NOTHING_CACHED		=0,	/*nothing is cached		*/
+   H5G_CACHED_SDATA		=1,	/*simple dataset, `sdata'	*/
+   H5G_CACHED_SYMTAB		=2 	/*symbol table, `symtab'	*/
+} H5G_type_t;
+
+/*
+ * A symbol table entry.  The two important fields are `name_off' and
+ * `header'.  The remaining fields are used for caching information that
+ * also appears in the object header to which this symbol table entry
+ * points.
+ */
+typedef struct H5G_entry_t {
+   off_t	name_off;	/*offset of name within name heap	*/
+   off_t	header;		/*file address of object header		*/
+   H5G_type_t	type;		/*type of information cached		*/
+
+   union {
+      struct {
+	 uint32	nt;		/*number type				*/
+	 uint32 ndim;		/*number of dimensions			*/
+	 uint32 dim[4];		/*dimension sizes			*/
+      } sdata;
+
+      struct {
+	 off_t	btree;		/*file address of symbol table B-tree	*/
+	 off_t	heap;		/*file address of symtab name heap	*/
+      } symtab;
+   } cache;			/*cached data from object header	*/
+} H5G_entry_t;
+
+/*
+ * A symbol table node is a collection of symbol table entries.  It can
+ * be thought of as the lowest level of the B-link tree that points to
+ * a collection of symbol table entries that belong to a specific symbol
+ * table or directory.
+ */
+typedef struct H5G_node_t {
+   int		dirty;		/*has cache been modified?		*/
+   int		nsyms;		/*number of symbols			*/
+   H5G_entry_t	*entry;		/*symbol table entries			*/
+} H5G_node_t;
+
+/*
+ * Each key field of the B-link tree that points to symbol table
+ * nodes consists of this structure...
+ */
+typedef struct H5G_node_key_t {
+   off_t	offset;		/*offset into heap for name		*/
+} H5G_node_key_t;
+
+/*
+ * Data exchange structure for symbol table nodes.  This structure is
+ * passed through the B-link tree layer to the methods for the objects
+ * to which the B-link tree points.
+ */
+typedef struct H5G_node_ud1_t {
+
+   /* downward */
+   char		*name;		/*points to temporary memory		*/
+   off_t	heap;		/*symbol table heap address		*/
+
+   /* upward */
+   H5G_entry_t	entry;		/*symbol table entry			*/
+
+} H5G_node_ud1_t;
+
+typedef struct H5G_node_list_t {
+
+   /* downward */
+   H5G_entry_t	*entry;		/*array of entries, alloc'd by caller	*/
+   char		**name;		/*array of string ptrs, allocd by caller*/
+   intn		nentries;	/*size of the ADDR and NAME arrays	*/
+   off_t	heap;		/*heap address				*/
+
+   /* upward */
+   intn		nused;		/*num. symbols processed		*/
+   
+} H5G_node_list_t;
+
+/*
+ * Library prototypes...
+ */
+herr_t H5G_decode (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent);
+herr_t H5G_decode_vec (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent, intn n);
+herr_t H5G_encode (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent);
+herr_t H5G_encode_vec (hdf5_file_t *f, uint8 **pp, H5G_entry_t *ent, intn n);
+
+
+#endif
+