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Diffstat (limited to 'src/H5Topaque.c')
| -rw-r--r-- | src/H5Topaque.c | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/src/H5Topaque.c b/src/H5Topaque.c new file mode 100644 index 0000000..1d1fec2 --- /dev/null +++ b/src/H5Topaque.c @@ -0,0 +1,139 @@ +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * Copyright by the Board of Trustees of the University of Illinois. * + * All rights reserved. * + * * + * This file is part of HDF5. The full HDF5 copyright notice, including * + * terms governing use, modification, and redistribution, is contained in * + * the files COPYING and Copyright.html. COPYING can be found at the root * + * of the source code distribution tree; Copyright.html can be found at the * + * root level of an installed copy of the electronic HDF5 document set and * + * is linked from the top-level documents page. It can also be found at * + * http://hdf.ncsa.uiuc.edu/HDF5/doc/Copyright.html. If you do not have * + * access to either file, you may request a copy from hdfhelp@ncsa.uiuc.edu. * + * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ + +/* + * Module Info: This module contains the functionality for opaque + * datatypes in the H5T interface. + */ + +#define H5T_PACKAGE /*suppress error about including H5Tpkg */ + +#include "H5private.h" /*generic functions */ +#include "H5Eprivate.h" /*error handling */ +#include "H5Iprivate.h" /*ID functions */ +#include "H5MMprivate.h" /*memory management */ +#include "H5Tpkg.h" /*data-type functions */ + +#define PABLO_MASK H5Topaque_mask + +/* Interface initialization */ +static int interface_initialize_g = 0; +#define INTERFACE_INIT H5T_init_opaque_interface +static herr_t H5T_init_opaque_interface(void); + + +/*-------------------------------------------------------------------------- +NAME + H5T_init_opaque_interface -- Initialize interface-specific information +USAGE + herr_t H5T_init_opaque_interface() + +RETURNS + Non-negative on success/Negative on failure +DESCRIPTION + Initializes any interface-specific data or routines. (Just calls + H5T_init_iterface currently). + +--------------------------------------------------------------------------*/ +static herr_t +H5T_init_opaque_interface(void) +{ + FUNC_ENTER_NOINIT(H5T_init_opaque_interface); + + FUNC_LEAVE_NOAPI(H5T_init_interface()); +} /* H5T_init_opaque_interface() */ + + +/*------------------------------------------------------------------------- + * Function: H5Tset_tag + * + * Purpose: Tag an opaque datatype with a unique ASCII identifier. + * + * Return: Non-negative on success/Negative on failure + * + * Programmer: Robb Matzke + * Thursday, May 20, 1999 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +herr_t +H5Tset_tag(hid_t type_id, const char *tag) +{ + H5T_t *dt=NULL; + herr_t ret_value=SUCCEED; /* Return value */ + + FUNC_ENTER_API(H5Tset_tag, FAIL); + H5TRACE2("e","is",type_id,tag); + + /* Check args */ + if (NULL == (dt = H5I_object_verify(type_id,H5I_DATATYPE))) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data type"); + if (H5T_STATE_TRANSIENT!=dt->state) + HGOTO_ERROR(H5E_ARGS, H5E_CANTINIT, FAIL, "data type is read-only"); + if (H5T_OPAQUE!=dt->type) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an opaque data type"); + if (!tag) + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no tag"); + + /* Commit */ + H5MM_xfree(dt->u.opaque.tag); + dt->u.opaque.tag = H5MM_strdup(tag); + +done: + FUNC_LEAVE_API(ret_value); +} + + +/*------------------------------------------------------------------------- + * Function: H5Tget_tag + * + * Purpose: Get tha tag associated with an opaque datatype. + * + * Return: A pointer to an allocated string. The caller should free + * the string. NULL is returned for errors. + * + * Programmer: Robb Matzke + * Thursday, May 20, 1999 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +char * +H5Tget_tag(hid_t type_id) +{ + H5T_t *dt=NULL; + char *ret_value; + + FUNC_ENTER_API(H5Tget_tag, NULL); + + /* Check args */ + if (NULL == (dt = H5I_object_verify(type_id,H5I_DATATYPE))) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not a data type"); + + if (dt->parent) + dt = dt->parent; /*defer to parent*/ + if (H5T_OPAQUE != dt->type) + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, NULL, "operation not defined for data type class"); + + /* result */ + if (NULL==(ret_value=H5MM_strdup(dt->u.opaque.tag))) + HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed"); + +done: + FUNC_LEAVE_API(ret_value); +} + |