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/****************************************************************************
* NCSA HDF *
* Software Development Group *
* National Center for Supercomputing Applications *
* University of Illinois at Urbana-Champaign *
* 605 E. Springfield, Champaign IL 61820 *
* *
* For conditions of distribution and use, see the accompanying *
* hdf/COPYING file. *
* *
****************************************************************************/
#ifdef RCSID
static char RcsId[] = "@(#)$Revision$";
#endif
/* $Id$ */
/*LINTLIBRARY */
/*+
FILE
H5Ostdst.c
HDF5 Standard Data Storage Object Header Message routines
EXPORTED ROUTINES
LIBRARY-SCOPED ROUTINES
LOCAL ROUTINES
+ */
#include <H5private.h>
#include <H5Eprivate.h>
#include <H5Gprivate.h>
#include <H5MMprivate.h>
#include <H5Oprivate.h>
#define PABLO_MASK H5O_std_store_mask
/* PRIVATE PROTOTYPES */
static void *H5O_std_store_decode (H5F_t *f, size_t raw_size, const uint8 *p);
static herr_t H5O_std_store_encode (H5F_t *f, size_t size, uint8 *p,
const void *_mesg);
static void *H5O_std_store_copy (const void *_mesg, void *_dest);
static size_t H5O_std_store_size (H5F_t *f, const void *_mesg);
static herr_t H5O_std_store_debug (H5F_t *f, const void *_mesg,
FILE *stream, intn indent, intn fwidth);
/* This message derives from H5O */
const H5O_class_t H5O_STD_STORE[1] = {{
H5O_STD_STORE_ID, /* message id number */
"std_store", /* message name for debugging */
sizeof (H5O_std_store_t),/* native message size */
H5G_NOTHING_CACHED, /* symtab entry `type' field */
H5O_std_store_decode, /* decode message */
H5O_std_store_encode, /* encode message */
NULL, /* get message from stab entry */
NULL, /* put message into stab entry */
H5O_std_store_copy, /* copy the native value */
H5O_std_store_size, /* size of symbol table entry */
NULL, /* default reset method */
H5O_std_store_debug, /* debug the message */
}};
/* Is the interface initialized? */
static hbool_t interface_initialize_g = FALSE;
/*--------------------------------------------------------------------------
NAME
H5O_std_store_decode
PURPOSE
Decode a standard data storage and return a pointer to a memory
struct with the decoded information
USAGE
void *H5O_std_store_decode(f, raw_size, p)
H5F_t *f; IN: pointer to the HDF5 file struct
size_t raw_size; IN: size of the raw information buffer
const uint8 *p; IN: the raw information buffer
RETURNS
Pointer to the new message in native order on success, NULL on failure
DESCRIPTION
This function decodes the "raw" disk form of a standard data storage
message into a struct in memory native format. The struct is allocated
within this function using malloc() and is returned to the caller.
--------------------------------------------------------------------------*/
static void *
H5O_std_store_decode (H5F_t *f, size_t raw_size, const uint8 *p)
{
H5O_std_store_t *store=NULL; /* New standard storage structure */
FUNC_ENTER (H5O_std_store_decode, NULL, NULL);
/* check args */
assert (f);
assert (raw_size == H5F_SIZEOF_OFFSET(f)+H5F_SIZEOF_SIZE(f));
assert (p);
/* decode */
if((store = H5MM_xcalloc (1, sizeof(H5O_std_store_t)))!=NULL)
{
H5F_decode_offset(f,p,store->off);
H5F_decode_length(f,p,store->len);
} /* end if */
#ifdef LATER
done:
#endif /* LATER */
if(store == NULL)
{ /* Error condition cleanup */
} /* end if */
/* Normal function cleanup */
FUNC_LEAVE (store);
} /* end H5O_std_store_decode() */
/*--------------------------------------------------------------------------
NAME
H5O_std_store_encode
PURPOSE
Encode a standard data storage message
USAGE
herr_t H5O_std_store_encode(f, raw_size, p, mesg)
H5F_t *f; IN: pointer to the HDF5 file struct
size_t raw_size; IN: size of the raw information buffer
const uint8 *p; IN: the raw information buffer
const void *mesg; IN: Pointer to the standard storage struct
RETURNS
SUCCEED/FAIL
DESCRIPTION
This function encodes the native memory form of the standard data
storage message in the "raw" disk form.
--------------------------------------------------------------------------*/
static herr_t
H5O_std_store_encode (H5F_t *f, size_t raw_size, uint8 *p, const void *mesg)
{
const H5O_std_store_t *store = (const H5O_std_store_t *)mesg;
FUNC_ENTER (H5O_std_store_encode, NULL, FAIL);
/* check args */
assert (f);
assert (raw_size == H5F_SIZEOF_OFFSET(f)+H5F_SIZEOF_SIZE(f));
assert (p);
assert (store);
/* encode */
H5F_encode_offset(f,p,store->off);
H5F_encode_length(f,p,store->len);
FUNC_LEAVE (SUCCEED);
} /* end H5O_std_store_encode() */
/*--------------------------------------------------------------------------
NAME
H5O_std_store_copy
PURPOSE
Copies a message from MESG to DEST, allocating DEST if necessary.
USAGE
void *H5O_std_store_copy(mesg, dest)
const void *mesg; IN: Pointer to the source standard storage struct
const void *dest; IN: Pointer to the destination standard storage struct
RETURNS
Pointer to DEST on success, NULL on failure
DESCRIPTION
This function copies a native (memory) standard storage message,
allocating the destination structure if necessary.
--------------------------------------------------------------------------*/
static void *
H5O_std_store_copy (const void *mesg, void *dest)
{
const H5O_std_store_t *src = (const H5O_std_store_t *)mesg;
H5O_std_store_t *dst = (H5O_std_store_t *)dest;
FUNC_ENTER (H5O_std_store_copy, NULL, NULL);
/* check args */
assert (src);
if (!dst)
dst = H5MM_xcalloc (1, sizeof(H5O_std_store_t));
/* copy */
HDmemcpy(dst,src,sizeof(H5O_std_store_t));
FUNC_LEAVE ((void*)dst);
} /* end H5O_std_store_copy() */
/*--------------------------------------------------------------------------
NAME
H5O_std_store_size
PURPOSE
Return the raw message size in bytes
USAGE
void *H5O_std_store_copy(f, mesg)
H5F_t *f; IN: pointer to the HDF5 file struct
const void *mesg; IN: Pointer to the source standard storage struct
RETURNS
Size of message on success, FAIL on failure
DESCRIPTION
This function returns the size of the raw standard storage message on
success. (Not counting the message type or size fields, only the data
portion of the message). It doesn't take into account alignment.
--------------------------------------------------------------------------*/
static size_t
H5O_std_store_size (H5F_t *f, const void *mesg)
{
size_t ret_value;
FUNC_ENTER (H5O_std_store_size, NULL, FAIL);
/* All standard data storage messages have the same data */
ret_value=H5F_SIZEOF_OFFSET(f)+H5F_SIZEOF_SIZE(f);
FUNC_LEAVE (ret_value);
} /* end H5O_std_store_size() */
/*--------------------------------------------------------------------------
NAME
H5O_std_store_debug
PURPOSE
Prints debugging information for a standard storage message
USAGE
void *H5O_std_store_debug(f, mesg, stream, indent, fwidth)
H5F_t *f; IN: pointer to the HDF5 file struct
const void *mesg; IN: Pointer to the source standard storage struct
FILE *stream; IN: Pointer to the stream for output data
intn indent; IN: Amount to indent information by
intn fwidth; IN: Field width (?)
RETURNS
SUCCEED/FAIL
DESCRIPTION
This function prints debugging output to the stream passed as a
parameter.
--------------------------------------------------------------------------*/
static herr_t
H5O_std_store_debug (H5F_t *f, const void *mesg, FILE *stream,
intn indent, intn fwidth)
{
const H5O_std_store_t *store = (const H5O_std_store_t *)mesg;
FUNC_ENTER (H5O_std_store_debug, NULL, FAIL);
/* check args */
assert (f);
assert (store);
assert (stream);
assert (indent>=0);
assert (fwidth>=0);
fprintf (stream, "%*s%-*s %lu\n", indent, "", fwidth,
"Offset:",
(unsigned long)(store->off));
fprintf (stream, "%*s%-*s %lu\n", indent, "", fwidth,
"Length:",
(unsigned long)(store->len));
FUNC_LEAVE (SUCCEED);
} /* end H5O_std_store_debug() */
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