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Diffstat (limited to 'src/H5Topaque.c')
| -rw-r--r-- | src/H5Topaque.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/src/H5Topaque.c b/src/H5Topaque.c new file mode 100644 index 0000000..4e8f1d4 --- /dev/null +++ b/src/H5Topaque.c @@ -0,0 +1,115 @@ +/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * + * Copyright by The HDF Group. * + * 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 COPYING file, which can be found at the root of the source code * + * distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases. * + * If you do not have access to either file, you may request a copy from * + * help@hdfgroup.org. * + * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ + +/* + * Module Info: This module contains the functionality for opaque + * datatypes in the H5T interface. + */ + +#include "H5Tmodule.h" /* This source code file is part of the H5T module */ + + +#include "H5private.h" /* Generic Functions */ +#include "H5Eprivate.h" /* Error handling */ +#include "H5Iprivate.h" /* IDs */ +#include "H5MMprivate.h" /* Memory management */ +#include "H5Tpkg.h" /* Datatypes */ + + + +/*------------------------------------------------------------------------- + * 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(FAIL) + H5TRACE2("e", "i*s", type_id, tag); + + /* Check args */ + if (NULL == (dt = (H5T_t *)H5I_object_verify(type_id,H5I_DATATYPE))) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a data type") + if (H5T_STATE_TRANSIENT!=dt->shared->state) + HGOTO_ERROR(H5E_ARGS, H5E_CANTINIT, FAIL, "data type is read-only") + while (dt->shared->parent) + dt = dt->shared->parent; /*defer to parent*/ + if (H5T_OPAQUE!=dt->shared->type) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an opaque data type") + if (!tag) + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no tag") + if (HDstrlen(tag) >= H5T_OPAQUE_TAG_MAX) + HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "tag too long") + + /* Commit */ + H5MM_xfree(dt->shared->u.opaque.tag); + dt->shared->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(NULL) + H5TRACE1("*s", "i", type_id); + + /* Check args */ + if (NULL == (dt = (H5T_t *)H5I_object_verify(type_id,H5I_DATATYPE))) + HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, NULL, "not a data type") + while (dt->shared->parent) + dt = dt->shared->parent; /*defer to parent*/ + if (H5T_OPAQUE != dt->shared->type) + HGOTO_ERROR(H5E_DATATYPE, H5E_CANTINIT, NULL, "operation not defined for data type class") + + /* result */ + if (NULL==(ret_value=H5MM_strdup(dt->shared->u.opaque.tag))) + HGOTO_ERROR(H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed") + +done: + FUNC_LEAVE_API(ret_value) +} + |