[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, 16 insertions, 2 deletions

diff --git a/src/H5Gpublic.h b/src/H5Gpublic.h
index cc3cc7d..32fc1d4 100644
--- a/src/H5Gpublic.h
+++ b/src/H5Gpublic.h
@@ -34,13 +34,27 @@ typedef enum H5G_link_t {
     H5G_LINK_SOFT	= 1
 } H5G_link_t;
 
-/* An object has a certain type */
+/*
+ * An object has a certain type. The first few numbers are reserved for use
+ * internally by HDF5. Users may add their own types with higher values.  The
+ * values are never stored in the file -- they only exist while an
+ * application is running.  An object may satisfy the `isa' function for more
+ * than one type.
+ */
 #define H5G_UNKNOWN	(-1)		/* Unknown object type		*/
 #define H5G_LINK	0		/* Object is a symbolic link	*/
 #define H5G_GROUP	1		/* Object is a group		*/
 #define H5G_DATASET	2		/* Object is a dataset		*/
 #define H5G_TYPE	3		/* Object is a named data type	*/
-#define H5G_NTYPES	4		/* THIS MUST BE LAST		*/
+#define H5G_RAGGED	4		/* Object is a ragged array	*/
+#define H5G_RESERVED_5	5		/* Reserved for future use	*/
+#define H5G_RESERVED_6	6		/* Reserved for future use	*/
+#define H5G_RESERVED_7	7		/* Reserved for future use	*/
+
+#define H5G_NTYPES	256		/* Max possible number of types	*/
+#define H5G_NLIBTYPES	8		/* Number of internal types	*/
+#define H5G_NUSERTYPES	(H5G_NTYPES-H5G_NLIBTYPES)
+#define H5G_USERTYPE(X)	(8+(X))		/* User defined types		*/
 
 /* Information about an object */
 typedef struct H5G_stat_t {