[svn-r876] Changes since 19981102

----------------------

./bin/snapshot
	Made same fix as for the release script yesterday.

./src/H5D.c
./src/H5Dprivate.h
./src/H5G.c
./src/H5Gprivate.h
./src/H5Gpublic.h
./src/H5O.c
./src/H5Oprivate.h
./src/H5RA.c
./src/H5RAprivate.h
./src/H5T.c
./src/H5Tprivate.h
	Improved object type checking.  Instead of determining the
	object type by trying to open each of the possible types, we
	keep a table of associations between object type number (like
	H5G_GROUP, H5G_DATASET, H5D_TYPE, and H5D_RAGGED) and an `isa'
	function that returns true if the object header has the right
	messages to make the object a particular type.  This mechanism
	also allows specialization of object types by permitting an
	object to satisfy more than one `isa' function.

	Added `isa' functions for groups, datasets, ragged arrays, and
	committed data types.

./src/H5config.h.in
	Added HAVE_STAT_ST_BLOCKS.  I thought this had already been
	added, but apparently not.

./tools/h5ls.c
	Removed system include files since they're already included by
	H5private.h and since I wasn't including them portably anyway.

	By default, 1-byte integer types are printed as integer values
	instead of ASCII characters. However, the `-s' or `--string'
	command-line switch causes the data to be interpretted as
	ASCII.  String data types are always printed as character
	data.

	Ragged arrays are now identified as ragged arrays and h5ls
	doesn't descend into the group automatically.  This uses the
	new object type specialization stuff.

./tools/h5tools.c
./tools/h5tools.h
	Added the ability to print 1-byte integer types as either
	ASCII or numeric data instead of always ASCII.  The default is
	to print as numeric data.

1 files changed, 15 insertions, 0 deletions

diff --git a/src/H5Gprivate.h b/src/H5Gprivate.h
index 1cf448f..ac430c1 100644
--- a/src/H5Gprivate.h
+++ b/src/H5Gprivate.h
@@ -96,9 +96,22 @@ typedef struct H5G_entry_t {
 typedef struct H5G_t H5G_t;
 
 /*
+ * This table contains a list of object types, descriptions, and the
+ * functions that determine if some object is a particular type.  The table
+ * is allocated dynamically.
+ */
+typedef struct H5G_typeinfo_t {
+    intn	type;			/*one of the public H5G_* types	     */
+    htri_t	(*isa)(H5G_entry_t*);	/*function to determine type	     */
+    char	*desc;			/*description of object type	     */
+} H5G_typeinfo_t;
+
+/*
  * Library prototypes...  These are the ones that other packages routinely
  * call.
  */
+herr_t H5G_register_type(intn type, htri_t(*isa)(H5G_entry_t*),
+			 const char *desc);
 H5G_entry_t *H5G_loc (hid_t loc_id);
 herr_t H5G_mkroot (H5F_t *f, H5G_entry_t *root_entry);
 H5G_entry_t *H5G_entof (H5G_t *grp);
@@ -108,8 +121,10 @@ H5G_t *H5G_open (H5G_entry_t *loc, const char *name);
 H5G_t *H5G_reopen (H5G_t *grp);
 herr_t H5G_close (H5G_t *grp);
 H5G_t *H5G_rootof(H5F_t *f);
+htri_t H5G_isa(H5G_entry_t *ent);
 herr_t H5G_link (H5G_entry_t *loc, H5G_link_t type, const char *cur_name,
 		 const char *new_name, uintn namei_flags);
+intn H5G_get_type(H5G_entry_t *ent);
 herr_t H5G_get_objinfo (H5G_entry_t *loc, const char *name,
 			hbool_t follow_link, H5G_stat_t *statbuf/*out*/);
 herr_t H5G_linkval (H5G_entry_t *loc, const char *name, size_t size,