diff options
Diffstat (limited to 'src/H5O.c')
| -rw-r--r-- | src/H5O.c | 97 |
1 files changed, 97 insertions, 0 deletions
@@ -3427,6 +3427,103 @@ done: /*------------------------------------------------------------------------- + * Function: H5O_encode + * + * Purpose: Encode an object(data type and simple data space only) + * description into a buffer. + * + * Return: Success: Non-negative + * + * Failure: Negative + * + * Programmer: Raymond Lu + * slu@ncsa.uiuc.edu + * July 13, 2004 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +herr_t +H5O_encode(unsigned char *buf, void *obj, size_t *nalloc, hid_t type_id) +{ + const H5O_class_t *type; /* Actual H5O class type for the ID */ + size_t size; /* size of the message*/ + herr_t ret_value = SUCCEED; /* Return value */ + + FUNC_ENTER_NOAPI(H5O_encode,FAIL); + + /* check args */ + if(type_id<0 || type_id>=(hid_t)(sizeof(message_type_g)/sizeof(message_type_g[0]))) + HGOTO_ERROR (H5E_ARGS, H5E_BADRANGE, FAIL, "invalid object type"); + + /* map the type ID to the actual type object */ + if((type=message_type_g[type_id])==NULL) + HGOTO_ERROR (H5E_OHDR, H5E_BADTYPE, FAIL, "unable to find object type"); + + /* check buffer size */ + if ((size=(type->raw_size)(NULL, obj))<0) + HGOTO_ERROR (H5E_OHDR, H5E_CANTENCODE, FAIL, "unable to encode message"); + + /* Don't encode if buffer size isn't big enough */ + if(!buf || *nalloc<size) { + *nalloc = size; + HGOTO_DONE(ret_value); + } + + /* Encode */ + if ((type->encode)(NULL, buf, obj)<0) + HGOTO_ERROR (H5E_OHDR, H5E_CANTENCODE, FAIL, "unable to encode message"); + +done: + FUNC_LEAVE_NOAPI(ret_value); +} + + +/*------------------------------------------------------------------------- + * Function: H5O_decode + * + * Purpose: Decode a binary object(data type and data space only) + * description and return a new object handle. + * + * Return: Success: Object ID(non-negative) + * + * Failure: Negative + * + * Programmer: Raymond Lu + * slu@ncsa.uiuc.edu + * July 14, 2004 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +void* +H5O_decode(unsigned char *buf, hid_t type_id) +{ + const H5O_class_t *type; /* Actual H5O class type for the ID */ + size_t size; /* size of the message*/ + void *ret_value=NULL; /* Return value */ + + FUNC_ENTER_NOAPI(H5O_decode,NULL); + + /* check args */ + if(type_id<0 || type_id>=(hid_t)(sizeof(message_type_g)/sizeof(message_type_g[0]))) + HGOTO_ERROR (H5E_ARGS, H5E_BADRANGE, NULL, "invalid object type"); + + /* map the type ID to the actual type object */ + if((type=message_type_g[type_id])==NULL) + HGOTO_ERROR (H5E_OHDR, H5E_BADTYPE, NULL, "unable to find object type"); + + /* decode */ + ret_value = (type->decode)(NULL, 0, buf, NULL); + +done: + FUNC_LEAVE_NOAPI(ret_value); +} + + +/*------------------------------------------------------------------------- * Function: H5O_debug_id * * Purpose: Act as a proxy for calling the 'debug' method for a |