/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 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 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://hdfgroup.org/HDF5/doc/Copyright.html. If you do not have * * access to either file, you may request a copy from help@hdfgroup.org. * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ /****************/ /* Module Setup */ /****************/ #define H5A_PACKAGE /*suppress error about including H5Apkg */ #define H5O_PACKAGE /*suppress error about including H5Opkg */ /* Interface initialization */ #define H5_INTERFACE_INIT_FUNC H5A_init_interface /***********/ /* Headers */ /***********/ #include "H5private.h" /* Generic Functions */ #include "H5Apkg.h" /* Attributes */ #include "H5Eprivate.h" /* Error handling */ #include "H5FLprivate.h" /* Free Lists */ #include "H5Iprivate.h" /* IDs */ #include "H5MMprivate.h" /* Memory management */ #include "H5Opkg.h" /* Object headers */ #include "H5Sprivate.h" /* Dataspace functions */ #include "H5SMprivate.h" /* Shared Object Header Messages */ /****************/ /* Local Macros */ /****************/ /******************/ /* Local Typedefs */ /******************/ /* Object header iterator callbacks */ /* Data structure for callback for locating the index by name */ typedef struct H5A_iter_cb1 { const char *name; int idx; } H5A_iter_cb1; /********************/ /* Package Typedefs */ /********************/ /********************/ /* Local Prototypes */ /********************/ /*********************/ /* Package Variables */ /*********************/ /*****************************/ /* Library Private Variables */ /*****************************/ /*******************/ /* Local Variables */ /*******************/ /* Declare the free lists of H5A_t */ H5FL_DEFINE(H5A_t); /* Declare the free lists for H5A_shared_t's */ H5FL_DEFINE(H5A_shared_t); /* Declare a free list to manage blocks of type conversion data */ H5FL_BLK_DEFINE(attr_buf); /* Attribute ID class */ static const H5I_class_t H5I_ATTR_CLS[1] = {{ H5I_ATTR, /* ID class value */ H5I_CLASS_REUSE_IDS, /* Class flags */ 0, /* # of reserved IDs for class */ (H5I_free_t)H5A_close /* Callback routine for closing objects of this class */ }}; /*------------------------------------------------------------------------- * Function: H5A_init * * Purpose: Initialize the interface from some other package. * * Return: Success: non-negative * Failure: negative * * Programmer: Quincey Koziol * Monday, November 27, 2006 * *------------------------------------------------------------------------- */ herr_t H5A_init(void) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI(FAIL) /* FUNC_ENTER() does all the work */ done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5A_init() */ /*-------------------------------------------------------------------------- NAME H5A_init_interface -- Initialize interface-specific information USAGE herr_t H5A_init_interface() RETURNS Non-negative on success/Negative on failure DESCRIPTION Initializes any interface-specific data or routines. --------------------------------------------------------------------------*/ static herr_t H5A_init_interface(void) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_NOAPI_NOINIT /* * Create attribute ID type. */ if(H5I_register_type(H5I_ATTR_CLS) < 0) HGOTO_ERROR(H5E_INTERNAL, H5E_CANTINIT, FAIL, "unable to initialize interface") done: FUNC_LEAVE_NOAPI(ret_value) } /* end H5A_init_interface() */ /*-------------------------------------------------------------------------- NAME H5A_term_interface PURPOSE Terminate various H5A objects USAGE void H5A_term_interface() RETURNS DESCRIPTION Release any other resources allocated. GLOBAL VARIABLES COMMENTS, BUGS, ASSUMPTIONS Can't report errors... EXAMPLES REVISION LOG --------------------------------------------------------------------------*/ int H5A_term_interface(void) { int n = 0; FUNC_ENTER_NOAPI_NOINIT_NOERR if(H5_interface_initialize_g) { if(H5I_nmembers(H5I_ATTR) > 0) { (void)H5I_clear_type(H5I_ATTR, FALSE, FALSE); n++; /*H5I*/ } /* end if */ else { /* Close deprecated interface */ n += H5A__term_deprec_interface(); /* Destroy the attribute object id group */ (void)H5I_dec_type_ref(H5I_ATTR); n++; /*H5I*/ /* Mark closed */ H5_interface_initialize_g = 0; } /* end else */ } /* end if */ FUNC_LEAVE_NOAPI(n) } /* H5A_term_interface() */ /*-------------------------------------------------------------------------- NAME H5Acreate2 PURPOSE Creates an attribute on an object USAGE hid_t H5Acreate2(loc_id, attr_name, type_id, space_id, acpl_id, aapl_id) hid_t loc_id; IN: Object (dataset or group) to be attached to const char *attr_name; IN: Name of attribute to locate and open hid_t type_id; IN: ID of datatype for attribute hid_t space_id; IN: ID of dataspace for attribute hid_t acpl_id; IN: ID of creation property list (currently not used) hid_t aapl_id; IN: Attribute access property list RETURNS Non-negative on success/Negative on failure DESCRIPTION This function creates an attribute which is attached to the object specified with 'loc_id'. The name specified with 'attr_name' for each attribute for an object must be unique for that object. The 'type_id' and 'space_id' are created with the H5T and H5S interfaces respectively. The 'aapl_id' property list is currently unused, but will be used in the future for optional attribute access properties. The attribute ID returned from this function must be released with H5Aclose or resource leaks will develop. --------------------------------------------------------------------------*/ /* ARGSUSED */ hid_t H5Acreate2(hid_t loc_id, const char *attr_name, hid_t type_id, hid_t space_id, hid_t acpl_id, hid_t H5_ATTR_UNUSED aapl_id) { H5A_t *attr = NULL; /* Attribute created */ H5G_loc_t loc; /* Object location */ H5T_t *type; /* Datatype to use for attribute */ H5S_t *space; /* Dataspace to use for attribute */ hid_t ret_value; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE6("i", "i*siiii", loc_id, attr_name, type_id, space_id, acpl_id, aapl_id); /* check arguments */ if(H5I_ATTR == H5I_get_type(loc_id)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "location is not valid for an attribute") if(H5G_loc(loc_id, &loc) < 0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") if(0 == (H5F_INTENT(loc.oloc->file) & H5F_ACC_RDWR)) HGOTO_ERROR(H5E_ARGS, H5E_WRITEERROR, FAIL, "no write intent on file") if(!attr_name || !*attr_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no attribute name") if(NULL == (type = (H5T_t *)H5I_object_verify(type_id, H5I_DATATYPE))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a type") if(NULL == (space = (H5S_t *)H5I_object_verify(space_id, H5I_DATASPACE))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace") /* Go do the real work for attaching the attribute to the dataset */ if(NULL == (attr = H5A_create(&loc, attr_name, type, space, acpl_id, H5AC_dxpl_id))) HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "unable to create attribute") /* Register the new attribute and get an ID for it */ if((ret_value = H5I_register(H5I_ATTR, attr, TRUE)) < 0) HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register attribute for ID") done: /* Cleanup on failure */ if(ret_value < 0 && attr && H5A_close(attr) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTFREE, FAIL, "can't close attribute") FUNC_LEAVE_API(ret_value) } /* H5Acreate2() */ /*-------------------------------------------------------------------------- NAME H5Acreate_by_name PURPOSE Creates an attribute on an object USAGE hid_t H5Acreate_by_name(loc_id, obj_name, attr_name, type_id, space_id, acpl_id, aapl_id, lapl_id) hid_t loc_id; IN: Object (dataset or group) to be attached to const char *obj_name; IN: Name of object relative to location const char *attr_name; IN: Name of attribute to locate and open hid_t type_id; IN: ID of datatype for attribute hid_t space_id; IN: ID of dataspace for attribute hid_t acpl_id; IN: ID of creation property list (currently not used) hid_t aapl_id; IN: Attribute access property list hid_t lapl_id; IN: Link access property list RETURNS Non-negative on success/Negative on failure DESCRIPTION This function creates an attribute which is attached to the object specified with 'loc_id/obj_name'. The name specified with 'attr_name' for each attribute for an object must be unique for that object. The 'type_id' and 'space_id' are created with the H5T and H5S interfaces respectively. The 'aapl_id' property list is currently unused, but will be used in the future for optional attribute access properties. The attribute ID returned from this function must be released with H5Aclose or resource leaks will develop. --------------------------------------------------------------------------*/ /* ARGSUSED */ hid_t H5Acreate_by_name(hid_t loc_id, const char *obj_name, const char *attr_name, hid_t type_id, hid_t space_id, hid_t acpl_id, hid_t H5_ATTR_UNUSED aapl_id, hid_t lapl_id) { H5A_t *attr = NULL; /* Attribute created */ H5G_loc_t loc; /* Object location */ H5G_loc_t obj_loc; /* Location used to open group */ H5G_name_t obj_path; /* Opened object group hier. path */ H5O_loc_t obj_oloc; /* Opened object object location */ hbool_t loc_found = FALSE; /* Entry at 'obj_name' found */ H5T_t *type; /* Datatype to use for attribute */ H5S_t *space; /* Dataspace to use for attribute */ hid_t ret_value; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE8("i", "i*s*siiiii", loc_id, obj_name, attr_name, type_id, space_id, acpl_id, aapl_id, lapl_id); /* check arguments */ if(H5I_ATTR == H5I_get_type(loc_id)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "location is not valid for an attribute") if(H5G_loc(loc_id, &loc) < 0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") if(0 == (H5F_INTENT(loc.oloc->file) & H5F_ACC_RDWR)) HGOTO_ERROR(H5E_ARGS, H5E_WRITEERROR, FAIL, "no write intent on file") if(!obj_name || !*obj_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no object name") if(!attr_name || !*attr_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no attribute name") if(NULL == (type = (H5T_t *)H5I_object_verify(type_id, H5I_DATATYPE))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a type") if(NULL == (space = (H5S_t *)H5I_object_verify(space_id, H5I_DATASPACE))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a dataspace") /* Set up opened group location to fill in */ obj_loc.oloc = &obj_oloc; obj_loc.path = &obj_path; H5G_loc_reset(&obj_loc); /* Find the object's location */ if(H5G_loc_find(&loc, obj_name, &obj_loc/*out*/, lapl_id, H5AC_ind_dxpl_id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_NOTFOUND, FAIL, "object not found") loc_found = TRUE; /* Go do the real work for attaching the attribute to the dataset */ if(NULL == (attr = H5A_create(&obj_loc, attr_name, type, space, acpl_id, H5AC_dxpl_id))) HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "unable to create attribute") /* Register the new attribute and get an ID for it */ if((ret_value = H5I_register(H5I_ATTR, attr, TRUE)) < 0) HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register attribute for ID") done: /* Release resources */ if(loc_found && H5G_loc_free(&obj_loc) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't free location") if(ret_value < 0 && attr && H5A_close(attr) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTFREE, FAIL, "can't close attribute") FUNC_LEAVE_API(ret_value) } /* H5Acreate_by_name() */ /*-------------------------------------------------------------------------- NAME H5Aopen PURPOSE Opens an attribute for an object by looking up the attribute name USAGE hid_t H5Aopen(loc_id, attr_name, aapl_id) hid_t loc_id; IN: Object that attribute is attached to const char *attr_name; IN: Name of attribute to locate and open hid_t aapl_id; IN: Attribute access property list RETURNS ID of attribute on success, negative on failure DESCRIPTION This function opens an existing attribute for access. The attribute name specified is used to look up the corresponding attribute for the object. The attribute ID returned from this function must be released with H5Aclose or resource leaks will develop. --------------------------------------------------------------------------*/ hid_t H5Aopen(hid_t loc_id, const char *attr_name, hid_t H5_ATTR_UNUSED aapl_id) { H5G_loc_t loc; /* Object location */ H5A_t *attr = NULL; /* Attribute opened */ hid_t ret_value; FUNC_ENTER_API(FAIL) H5TRACE3("i", "i*si", loc_id, attr_name, aapl_id); /* check arguments */ if(H5I_ATTR == H5I_get_type(loc_id)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "location is not valid for an attribute") if(H5G_loc(loc_id, &loc) < 0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") if(!attr_name || !*attr_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no attribute name") /* Read in attribute from object header */ if(NULL == (attr = H5O_attr_open_by_name(loc.oloc, attr_name, H5AC_ind_dxpl_id))) HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "unable to load attribute info from object header for attribute: '%s'", attr_name) /* Finish initializing attribute */ if(H5A_open_common(&loc, attr) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTINIT, FAIL, "unable to initialize attribute") /* Register the attribute and get an ID for it */ if((ret_value = H5I_register(H5I_ATTR, attr, TRUE)) < 0) HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register attribute for ID") done: /* Cleanup on failure */ if(ret_value < 0) if(attr && H5A_close(attr) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTFREE, FAIL, "can't close attribute") FUNC_LEAVE_API(ret_value) } /* H5Aopen() */ /*-------------------------------------------------------------------------- NAME H5Aopen_by_name PURPOSE Opens an attribute for an object by looking up the attribute name USAGE hid_t H5Aopen_by_name(loc_id, obj_name, attr_name, aapl_id, lapl_id) hid_t loc_id; IN: Object that attribute is attached to const char *obj_name; IN: Name of object relative to location const char *attr_name; IN: Name of attribute to locate and open hid_t aapl_id; IN: Attribute access property list hid_t lapl_id; IN: Link access property list RETURNS ID of attribute on success, negative on failure DESCRIPTION This function opens an existing attribute for access. The attribute name specified is used to look up the corresponding attribute for the object. The attribute ID returned from this function must be released with H5Aclose or resource leaks will develop. --------------------------------------------------------------------------*/ hid_t H5Aopen_by_name(hid_t loc_id, const char *obj_name, const char *attr_name, hid_t H5_ATTR_UNUSED aapl_id, hid_t lapl_id) { H5G_loc_t loc; /* Object location */ H5A_t *attr = NULL; /* Attribute opened */ hid_t ret_value; FUNC_ENTER_API(FAIL) H5TRACE5("i", "i*s*sii", loc_id, obj_name, attr_name, aapl_id, lapl_id); /* check arguments */ if(H5I_ATTR == H5I_get_type(loc_id)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "location is not valid for an attribute") if(H5G_loc(loc_id, &loc) < 0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") if(!obj_name || !*obj_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no object name") if(!attr_name || !*attr_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no attribute name") if(H5P_DEFAULT == lapl_id) lapl_id = H5P_LINK_ACCESS_DEFAULT; else if(TRUE != H5P_isa_class(lapl_id, H5P_LINK_ACCESS)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not link access property list ID") /* Open the attribute on the object header */ if(NULL == (attr = H5A_open_by_name(&loc, obj_name, attr_name, lapl_id, H5AC_ind_dxpl_id))) HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, FAIL, "can't open attribute") /* Register the attribute and get an ID for it */ if((ret_value = H5I_register(H5I_ATTR, attr, TRUE)) < 0) HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register attribute for ID") done: /* Cleanup on failure */ if(ret_value < 0) if(attr && H5A_close(attr) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTFREE, FAIL, "can't close attribute") FUNC_LEAVE_API(ret_value) } /* H5Aopen_by_name() */ /*-------------------------------------------------------------------------- NAME H5Aopen_by_idx PURPOSE Opens the n'th attribute for an object, according to the order within an index USAGE hid_t H5Aopen_by_idx(loc_id, obj_ame, idx_type, order, n, aapl_id, lapl_id) hid_t loc_id; IN: Object that attribute is attached to const char *obj_name; IN: Name of object relative to location H5_index_t idx_type; IN: Type of index to use H5_iter_order_t order; IN: Order to iterate over index hsize_t n; IN: Index (0-based) attribute to open hid_t aapl_id; IN: Attribute access property list hid_t lapl_id; IN: Link access property list RETURNS ID of attribute on success, negative on failure DESCRIPTION This function opens an existing attribute for access. The attribute index specified is used to look up the corresponding attribute for the object. The attribute ID returned from this function must be released with H5Aclose or resource leaks will develop. --------------------------------------------------------------------------*/ hid_t H5Aopen_by_idx(hid_t loc_id, const char *obj_name, H5_index_t idx_type, H5_iter_order_t order, hsize_t n, hid_t H5_ATTR_UNUSED aapl_id, hid_t lapl_id) { H5A_t *attr = NULL; /* Attribute opened */ H5G_loc_t loc; /* Object location */ hid_t ret_value; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE7("i", "i*sIiIohii", loc_id, obj_name, idx_type, order, n, aapl_id, lapl_id); /* check arguments */ if(H5I_ATTR == H5I_get_type(loc_id)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "location is not valid for an attribute") if(H5G_loc(loc_id, &loc) < 0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") if(!obj_name || !*obj_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no object name") if(idx_type <= H5_INDEX_UNKNOWN || idx_type >= H5_INDEX_N) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index type specified") if(order <= H5_ITER_UNKNOWN || order >= H5_ITER_N) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid iteration order specified") if(H5P_DEFAULT == lapl_id) lapl_id = H5P_LINK_ACCESS_DEFAULT; else if(TRUE != H5P_isa_class(lapl_id, H5P_LINK_ACCESS)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not link access property list ID") /* Open the attribute in the object header */ if(NULL == (attr = H5A_open_by_idx(&loc, obj_name, idx_type, order, n, lapl_id, H5AC_ind_dxpl_id))) HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, FAIL, "unable to open attribute") /* Register the attribute and get an ID for it */ if((ret_value = H5I_register(H5I_ATTR, attr, TRUE)) < 0) HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register attribute for ID") done: /* Cleanup on failure */ if(ret_value < 0) if(attr && H5A_close(attr) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTFREE, FAIL, "can't close attribute") FUNC_LEAVE_API(ret_value) } /* H5Aopen_by_idx() */ /*-------------------------------------------------------------------------- NAME H5Awrite PURPOSE Write out data to an attribute USAGE herr_t H5Awrite (attr_id, dtype_id, buf) hid_t attr_id; IN: Attribute to write hid_t dtype_id; IN: Memory datatype of buffer const void *buf; IN: Buffer of data to write RETURNS Non-negative on success/Negative on failure DESCRIPTION This function writes a complete attribute to disk. --------------------------------------------------------------------------*/ herr_t H5Awrite(hid_t attr_id, hid_t dtype_id, const void *buf) { H5A_t *attr; /* Attribute object for ID */ H5T_t *mem_type; /* Memory datatype */ herr_t ret_value; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE3("e", "ii*x", attr_id, dtype_id, buf); /* check arguments */ if(NULL == (attr = (H5A_t *)H5I_object_verify(attr_id, H5I_ATTR))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an attribute") if(NULL == (mem_type = (H5T_t *)H5I_object_verify(dtype_id, H5I_DATATYPE))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a datatype") if(NULL == buf) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "null attribute buffer") /* Go write the actual data to the attribute */ if((ret_value = H5A_write(attr, mem_type, buf, H5AC_dxpl_id)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_WRITEERROR, FAIL, "unable to write attribute") done: FUNC_LEAVE_API(ret_value) } /* H5Awrite() */ /*-------------------------------------------------------------------------- NAME H5Aread PURPOSE Read in data from an attribute USAGE herr_t H5Aread (attr_id, dtype_id, buf) hid_t attr_id; IN: Attribute to read hid_t dtype_id; IN: Memory datatype of buffer void *buf; IN: Buffer for data to read RETURNS Non-negative on success/Negative on failure DESCRIPTION This function reads a complete attribute from disk. --------------------------------------------------------------------------*/ herr_t H5Aread(hid_t attr_id, hid_t dtype_id, void *buf) { H5A_t *attr; /* Attribute object for ID */ H5T_t *mem_type; /* Memory datatype */ herr_t ret_value; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE3("e", "ii*x", attr_id, dtype_id, buf); /* check arguments */ if(NULL == (attr = (H5A_t *)H5I_object_verify(attr_id, H5I_ATTR))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an attribute") if(NULL == (mem_type = (H5T_t *)H5I_object_verify(dtype_id, H5I_DATATYPE))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a datatype") if(NULL == buf) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "null attribute buffer") /* Go write the actual data to the attribute */ if((ret_value = H5A_read(attr, mem_type, buf, H5AC_ind_dxpl_id)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_READERROR, FAIL, "unable to read attribute") done: FUNC_LEAVE_API(ret_value) } /* H5Aread() */ /*-------------------------------------------------------------------------- NAME H5Aget_space PURPOSE Gets a copy of the dataspace for an attribute USAGE hid_t H5Aget_space (attr_id) hid_t attr_id; IN: Attribute to get dataspace of RETURNS A dataspace ID on success, negative on failure DESCRIPTION This function retrieves a copy of the dataspace for an attribute. The dataspace ID returned from this function must be released with H5Sclose or resource leaks will develop. --------------------------------------------------------------------------*/ hid_t H5Aget_space(hid_t attr_id) { H5A_t *attr; /* Attribute object for ID */ H5S_t *ds = NULL; hid_t ret_value; FUNC_ENTER_API(FAIL) H5TRACE1("i", "i", attr_id); /* check arguments */ if(NULL == (attr = (H5A_t *)H5I_object_verify(attr_id, H5I_ATTR))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an attribute") if(NULL == (ds = H5A_get_space(attr))) HGOTO_ERROR(H5E_ARGS, H5E_CANTGET, FAIL, "can't get space ID of attribute") /* Atomize */ if((ret_value = H5I_register(H5I_DATASPACE, ds, TRUE)) < 0) HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register dataspace atom") done: if(ret_value < 0) { if(ds && (H5S_close(ds) < 0)) HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release dataspace") } /* end if */ FUNC_LEAVE_API(ret_value) } /* H5Aget_space() */ /*-------------------------------------------------------------------------- NAME H5Aget_type PURPOSE Gets a copy of the datatype for an attribute USAGE hid_t H5Aget_type (attr_id) hid_t attr_id; IN: Attribute to get datatype of RETURNS A datatype ID on success, negative on failure DESCRIPTION This function retrieves a copy of the datatype for an attribute. The datatype ID returned from this function must be released with H5Tclose or resource leaks will develop. --------------------------------------------------------------------------*/ hid_t H5Aget_type(hid_t attr_id) { H5A_t *attr; /* Attribute object for ID */ H5T_t *dt = NULL; hid_t ret_value; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE1("i", "i", attr_id); /* check arguments */ if(NULL == (attr = (H5A_t *)H5I_object_verify(attr_id, H5I_ATTR))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an attribute") if(NULL == (dt = H5A_get_type(attr))) HGOTO_ERROR(H5E_ARGS, H5E_CANTGET, FAIL, "can't get space ID of attribute") /* Create an atom */ if((ret_value = H5I_register(H5I_DATATYPE, dt, TRUE)) < 0) HGOTO_ERROR(H5E_ATOM, H5E_CANTREGISTER, FAIL, "unable to register datatype") done: if(ret_value < 0) { if(dt && (H5T_close(dt) < 0)) HDONE_ERROR(H5E_DATASET, H5E_CLOSEERROR, FAIL, "unable to release datatype") } /* end if */ FUNC_LEAVE_API(ret_value) } /* H5Aget_type() */ /*-------------------------------------------------------------------------- NAME H5Aget_create_plist PURPOSE Gets a copy of the creation property list for an attribute USAGE hssize_t H5Aget_create_plist (attr_id, buf_size, buf) hid_t attr_id; IN: Attribute to get name of RETURNS This function returns the ID of a copy of the attribute's creation property list, or negative on failure. ERRORS DESCRIPTION This function returns a copy of the creation property list for an attribute. The resulting ID must be closed with H5Pclose() or resource leaks will occur. --------------------------------------------------------------------------*/ hid_t H5Aget_create_plist(hid_t attr_id) { H5A_t *attr; /* Attribute object for ID */ hid_t ret_value; FUNC_ENTER_API(FAIL) H5TRACE1("i", "i", attr_id); HDassert(H5P_LST_ATTRIBUTE_CREATE_ID_g != -1); /* Get attribute and default attribute creation property list*/ if(NULL == (attr = (H5A_t *)H5I_object_verify(attr_id, H5I_ATTR))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an attribute") if((ret_value = H5A_get_create_plist(attr)) < 0) HGOTO_ERROR(H5E_ARGS, H5E_CANTGET, FAIL, "can't get creation property list for attr") done: FUNC_LEAVE_API(ret_value) } /* end H5Aget_create_plist() */ /*-------------------------------------------------------------------------- NAME H5Aget_name PURPOSE Gets a copy of the name for an attribute USAGE hssize_t H5Aget_name (attr_id, buf_size, buf) hid_t attr_id; IN: Attribute to get name of size_t buf_size; IN: The size of the buffer to store the string in. char *buf; IN: Buffer to store name in RETURNS This function returns the length of the attribute's name (which may be longer than 'buf_size') on success or negative for failure. DESCRIPTION This function retrieves the name of an attribute for an attribute ID. Up to 'buf_size' characters are stored in 'buf' followed by a '\0' string terminator. If the name of the attribute is longer than 'buf_size'-1, the string terminator is stored in the last position of the buffer to properly terminate the string. --------------------------------------------------------------------------*/ ssize_t H5Aget_name(hid_t attr_id, size_t buf_size, char *buf) { H5A_t *my_attr; /* Attribute object for ID */ ssize_t ret_value; FUNC_ENTER_API(FAIL) H5TRACE3("Zs", "iz*s", attr_id, buf_size, buf); /* check arguments */ if(NULL == (my_attr = (H5A_t *)H5I_object_verify(attr_id, H5I_ATTR))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an attribute") if(!buf && buf_size) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid buffer") /* Call private function in turn */ if(0 > (ret_value = H5A_get_name(my_attr, buf_size, buf))) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "can't get attribute name") done: FUNC_LEAVE_API(ret_value) } /* H5Aget_name() */ /*------------------------------------------------------------------------- * Function: H5Aget_name_by_idx * * Purpose: Retrieve name of an attribute, according to the * order within an index. * * Same pattern of behavior as H5Iget_name. * * Return: Success: Non-negative length of name, with information * in NAME buffer * Failure: Negative * * Programmer: Quincey Koziol * February 8, 2007 * *------------------------------------------------------------------------- */ ssize_t H5Aget_name_by_idx(hid_t loc_id, const char *obj_name, H5_index_t idx_type, H5_iter_order_t order, hsize_t n, char *name /*out*/, size_t size, hid_t lapl_id) { H5G_loc_t loc; /* Object location */ H5A_t *attr = NULL; /* Attribute object for name */ ssize_t ret_value; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE8("Zs", "i*sIiIohxzi", loc_id, obj_name, idx_type, order, n, name, size, lapl_id); /* Check args */ if(H5I_ATTR == H5I_get_type(loc_id)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "location is not valid for an attribute") if(H5G_loc(loc_id, &loc) < 0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") if(!obj_name || !*obj_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name") if(idx_type <= H5_INDEX_UNKNOWN || idx_type >= H5_INDEX_N) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index type specified") if(order <= H5_ITER_UNKNOWN || order >= H5_ITER_N) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid iteration order specified") if(H5P_DEFAULT == lapl_id) lapl_id = H5P_LINK_ACCESS_DEFAULT; else if(TRUE != H5P_isa_class(lapl_id, H5P_LINK_ACCESS)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not link access property list ID") /* Open the attribute on the object header */ if(NULL == (attr = H5A_open_by_idx(&loc, obj_name, idx_type, order, n, lapl_id, H5AC_ind_dxpl_id))) HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, FAIL, "can't open attribute") /* Get the length of the name */ ret_value = (ssize_t)HDstrlen(attr->shared->name); /* Copy the name into the user's buffer, if given */ if(name) { HDstrncpy(name, attr->shared->name, MIN((size_t)(ret_value + 1), size)); if((size_t)ret_value >= size) name[size - 1]='\0'; } /* end if */ done: /* Release resources */ if(attr && H5A_close(attr) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTFREE, FAIL, "can't close attribute") FUNC_LEAVE_API(ret_value) } /* end H5Aget_name_by_idx() */ /*------------------------------------------------------------------------- * Function: H5Aget_storage_size * * Purpose: Returns the amount of storage size that is required for this * attribute. * * Return: Success: The amount of storage size allocated for the * attribute. The return value may be zero * if no data has been stored. * * Failure: Zero * * Programmer: Raymond Lu * October 23, 2002 * *------------------------------------------------------------------------- */ hsize_t H5Aget_storage_size(hid_t attr_id) { H5A_t *attr; /* Attribute object for ID */ hsize_t ret_value; /* Return value */ FUNC_ENTER_API(0) H5TRACE1("h", "i", attr_id); /* Check args */ if(NULL == (attr = (H5A_t *)H5I_object_verify(attr_id, H5I_ATTR))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, 0, "not an attribute") /* Set return value */ ret_value = attr->shared->data_size; done: FUNC_LEAVE_API(ret_value) } /* end H5Aget_storage_size() */ /*------------------------------------------------------------------------- * Function: H5Aget_info * * Purpose: Retrieve information about an attribute. * * Return: Success: Non-negative * Failure: Negative * * Programmer: Quincey Koziol * February 6, 2007 * *------------------------------------------------------------------------- */ herr_t H5Aget_info(hid_t attr_id, H5A_info_t *ainfo) { H5A_t *attr; /* Attribute object for name */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE2("e", "i*x", attr_id, ainfo); /* Check args */ if(NULL == (attr = (H5A_t *)H5I_object_verify(attr_id, H5I_ATTR))) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an attribute") /* Get the attribute information */ if(H5A_get_info(attr, ainfo) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "unable to get attribute info") done: FUNC_LEAVE_API(ret_value) } /* end H5Aget_info() */ /*------------------------------------------------------------------------- * Function: H5Aget_info_by_name * * Purpose: Retrieve information about an attribute by name. * * Return: Success: Non-negative * Failure: Negative * * Programmer: Quincey Koziol * February 6, 2007 * *------------------------------------------------------------------------- */ herr_t H5Aget_info_by_name(hid_t loc_id, const char *obj_name, const char *attr_name, H5A_info_t *ainfo, hid_t lapl_id) { H5G_loc_t loc; /* Object location */ H5A_t *attr = NULL; /* Attribute object for name */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE5("e", "i*s*s*xi", loc_id, obj_name, attr_name, ainfo, lapl_id); /* Check args */ if(H5I_ATTR == H5I_get_type(loc_id)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "location is not valid for an attribute") if(H5G_loc(loc_id, &loc) < 0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") if(!obj_name || !*obj_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no object name") if(!attr_name || !*attr_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no attribute name") if(NULL == ainfo) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid info pointer") if(H5P_DEFAULT == lapl_id) lapl_id = H5P_LINK_ACCESS_DEFAULT; else if(TRUE != H5P_isa_class(lapl_id, H5P_LINK_ACCESS)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not link access property list ID") /* Open the attribute on the object header */ if(NULL == (attr = H5A_open_by_name(&loc, obj_name, attr_name, lapl_id, H5AC_ind_dxpl_id))) HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, FAIL, "can't open attribute") /* Get the attribute information */ if(H5A_get_info(attr, ainfo) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "unable to get attribute info") done: /* Cleanup on failure */ if(attr && H5A_close(attr) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTFREE, FAIL, "can't close attribute") FUNC_LEAVE_API(ret_value) } /* end H5Aget_info_by_name() */ /*------------------------------------------------------------------------- * Function: H5Aget_info_by_idx * * Purpose: Retrieve information about an attribute, according to the * order within an index. * * Return: Success: Non-negative with information in AINFO * Failure: Negative * * Programmer: Quincey Koziol * February 8, 2007 * *------------------------------------------------------------------------- */ herr_t H5Aget_info_by_idx(hid_t loc_id, const char *obj_name, H5_index_t idx_type, H5_iter_order_t order, hsize_t n, H5A_info_t *ainfo, hid_t lapl_id) { H5G_loc_t loc; /* Object location */ H5A_t *attr = NULL; /* Attribute object for name */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE7("e", "i*sIiIoh*xi", loc_id, obj_name, idx_type, order, n, ainfo, lapl_id); /* Check args */ if(H5I_ATTR == H5I_get_type(loc_id)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "location is not valid for an attribute") if(H5G_loc(loc_id, &loc) < 0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") if(!obj_name || !*obj_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name") if(idx_type <= H5_INDEX_UNKNOWN || idx_type >= H5_INDEX_N) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index type specified") if(order <= H5_ITER_UNKNOWN || order >= H5_ITER_N) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid iteration order specified") if(NULL == ainfo) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid info pointer") if(H5P_DEFAULT == lapl_id) lapl_id = H5P_LINK_ACCESS_DEFAULT; else if(TRUE != H5P_isa_class(lapl_id, H5P_LINK_ACCESS)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not link access property list ID") /* Open the attribute on the object header */ if(NULL == (attr = H5A_open_by_idx(&loc, obj_name, idx_type, order, n, lapl_id, H5AC_ind_dxpl_id))) HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, FAIL, "can't open attribute") /* Get the attribute information */ if(H5A_get_info(attr, ainfo) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "unable to get attribute info") done: /* Release resources */ if(attr && H5A_close(attr) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTFREE, FAIL, "can't close attribute") FUNC_LEAVE_API(ret_value) } /* end H5Aget_info_by_idx() */ /*------------------------------------------------------------------------- * Function: H5Arename * * Purpose: Rename an attribute * * Return: Success: Non-negative * Failure: Negative * * Programmer: Raymond Lu * October 23, 2002 * *------------------------------------------------------------------------- */ herr_t H5Arename(hid_t loc_id, const char *old_name, const char *new_name) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE3("e", "i*s*s", loc_id, old_name, new_name); /* check arguments */ if(!old_name || !new_name) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "name is nil") if(H5I_ATTR == H5I_get_type(loc_id)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "location is not valid for an attribute") /* Avoid thrashing things if the names are the same */ if(HDstrcmp(old_name, new_name)) { H5G_loc_t loc; /* Object location */ if(H5G_loc(loc_id, & loc) < 0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") /* Call private attribute rename routine */ if(H5O_attr_rename(loc.oloc, H5AC_dxpl_id, old_name, new_name) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTRENAME, FAIL, "can't rename attribute") } /* end if */ done: FUNC_LEAVE_API(ret_value) } /* H5Arename() */ /*------------------------------------------------------------------------- * Function: H5Arename_by_name * * Purpose: Rename an attribute * * Return: Success: Non-negative * Failure: Negative * * Programmer: Quincey Koziol * February 20, 2007 * *------------------------------------------------------------------------- */ herr_t H5Arename_by_name(hid_t loc_id, const char *obj_name, const char *old_attr_name, const char *new_attr_name, hid_t lapl_id) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE5("e", "i*s*s*si", loc_id, obj_name, old_attr_name, new_attr_name, lapl_id); /* check arguments */ if(H5I_ATTR == H5I_get_type(loc_id)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "location is not valid for an attribute") if(!obj_name || !*obj_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no object name") if(!old_attr_name || !*old_attr_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no old attribute name") if(!new_attr_name || !*new_attr_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no new attribute name") if(H5P_DEFAULT == lapl_id) lapl_id = H5P_LINK_ACCESS_DEFAULT; else if(TRUE != H5P_isa_class(lapl_id, H5P_LINK_ACCESS)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not link access property list ID") /* Avoid thrashing things if the names are the same */ if(HDstrcmp(old_attr_name, new_attr_name)) { H5G_loc_t loc; /* Object location */ if(H5G_loc(loc_id, & loc) < 0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") /* Call private attribute rename routine */ if(H5A_rename_by_name(loc, obj_name, old_attr_name, new_attr_name, lapl_id, H5AC_dxpl_id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTRENAME, FAIL, "can't rename attribute") } /* end if */ done: FUNC_LEAVE_API(ret_value) } /* H5Arename_by_name() */ /*-------------------------------------------------------------------------- NAME H5Aiterate2 PURPOSE Calls a user's function for each attribute on an object USAGE herr_t H5Aiterate2(loc_id, idx_type, order, idx, op, op_data) hid_t loc_id; IN: Base location for object H5_index_t idx_type; IN: Type of index to use H5_iter_order_t order; IN: Order to iterate over index hsize_t *idx; IN/OUT: Starting (IN) & Ending (OUT) attribute in index & order H5A_operator2_t op; IN: User's function to pass each attribute to void *op_data; IN/OUT: User's data to pass through to iterator operator function RETURNS Returns a negative value if an error occurs, the return value of the last operator if it was non-zero (which can be a negative value), or zero if all attributes were processed. DESCRIPTION This function interates over the attributes of dataset or group specified with 'loc_id' & 'obj_name'. For each attribute of the object, the 'op_data' and some additional information (specified below) are passed to the 'op' function. The iteration begins with the '*idx' object in the group and the next attribute to be processed by the operator is returned in '*idx'. The operation receives the ID for the group or dataset being iterated over ('loc_id'), the name of the current attribute about the object ('attr_name'), the attribute's "info" struct ('ainfo') and the pointer to the operator data passed in to H5Aiterate2 ('op_data'). The return values from an operator are: A. Zero causes the iterator to continue, returning zero when all attributes have been processed. B. Positive causes the iterator to immediately return that positive value, indicating short-circuit success. The iterator can be restarted at the next attribute. C. Negative causes the iterator to immediately return that value, indicating failure. The iterator can be restarted at the next attribute. --------------------------------------------------------------------------*/ herr_t H5Aiterate2(hid_t loc_id, H5_index_t idx_type, H5_iter_order_t order, hsize_t *idx, H5A_operator2_t op, void *op_data) { H5A_attr_iter_op_t attr_op; /* Attribute operator */ hsize_t start_idx; /* Index of attribute to start iterating at */ hsize_t last_attr; /* Index of last attribute examined */ herr_t ret_value; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE6("e", "iIiIo*hx*x", loc_id, idx_type, order, idx, op, op_data); /* check arguments */ if(H5I_ATTR == H5I_get_type(loc_id)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "location is not valid for an attribute") if(idx_type <= H5_INDEX_UNKNOWN || idx_type >= H5_INDEX_N) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index type specified") if(order <= H5_ITER_UNKNOWN || order >= H5_ITER_N) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid iteration order specified") /* Build attribute operator info */ attr_op.op_type = H5A_ATTR_OP_APP2; attr_op.u.app_op2 = op; /* Call attribute iteration routine */ last_attr = start_idx = (idx ? *idx : 0); if((ret_value = H5O_attr_iterate(loc_id, H5AC_ind_dxpl_id, idx_type, order, start_idx, &last_attr, &attr_op, op_data)) < 0) HERROR(H5E_ATTR, H5E_BADITER, "error iterating over attributes"); /* Set the last attribute information */ if(idx) *idx = last_attr; done: FUNC_LEAVE_API(ret_value) } /* H5Aiterate2() */ /*-------------------------------------------------------------------------- NAME H5Aiterate_by_name PURPOSE Calls a user's function for each attribute on an object USAGE herr_t H5Aiterate2(loc_id, obj_name, idx_type, order, idx, op, op_data, lapl_id) hid_t loc_id; IN: Base location for object const char *obj_name; IN: Name of object relative to location H5_index_t idx_type; IN: Type of index to use H5_iter_order_t order; IN: Order to iterate over index hsize_t *idx; IN/OUT: Starting (IN) & Ending (OUT) attribute in index & order H5A_operator2_t op; IN: User's function to pass each attribute to void *op_data; IN/OUT: User's data to pass through to iterator operator function hid_t lapl_id; IN: Link access property list RETURNS Returns a negative value if an error occurs, the return value of the last operator if it was non-zero (which can be a negative value), or zero if all attributes were processed. DESCRIPTION This function interates over the attributes of dataset or group specified with 'loc_id' & 'obj_name'. For each attribute of the object, the 'op_data' and some additional information (specified below) are passed to the 'op' function. The iteration begins with the '*idx' object in the group and the next attribute to be processed by the operator is returned in '*idx'. The operation receives the ID for the group or dataset being iterated over ('loc_id'), the name of the current attribute about the object ('attr_name'), the attribute's "info" struct ('ainfo') and the pointer to the operator data passed in to H5Aiterate_by_name ('op_data'). The return values from an operator are: A. Zero causes the iterator to continue, returning zero when all attributes have been processed. B. Positive causes the iterator to immediately return that positive value, indicating short-circuit success. The iterator can be restarted at the next attribute. C. Negative causes the iterator to immediately return that value, indicating failure. The iterator can be restarted at the next attribute. --------------------------------------------------------------------------*/ herr_t H5Aiterate_by_name(hid_t loc_id, const char *obj_name, H5_index_t idx_type, H5_iter_order_t order, hsize_t *idx, H5A_operator2_t op, void *op_data, hid_t lapl_id) { H5G_loc_t loc; /* Object location */ H5G_loc_t obj_loc; /* Location used to open group */ H5G_name_t obj_path; /* Opened object group hier. path */ H5O_loc_t obj_oloc; /* Opened object object location */ hbool_t loc_found = FALSE; /* Entry at 'obj_name' found */ hid_t obj_loc_id = (-1); /* ID for object located */ H5A_attr_iter_op_t attr_op; /* Attribute operator */ hsize_t start_idx; /* Index of attribute to start iterating at */ hsize_t last_attr; /* Index of last attribute examined */ herr_t ret_value; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE8("e", "i*sIiIo*hx*xi", loc_id, obj_name, idx_type, order, idx, op, op_data, lapl_id); /* check arguments */ if(H5I_ATTR == H5I_get_type(loc_id)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "location is not valid for an attribute") if(H5G_loc(loc_id, &loc) < 0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") if(!obj_name || !*obj_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no object name") if(idx_type <= H5_INDEX_UNKNOWN || idx_type >= H5_INDEX_N) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index type specified") if(order <= H5_ITER_UNKNOWN || order >= H5_ITER_N) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid iteration order specified") if(H5P_DEFAULT == lapl_id) lapl_id = H5P_LINK_ACCESS_DEFAULT; else if(TRUE != H5P_isa_class(lapl_id, H5P_LINK_ACCESS)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not link access property list ID") /* Set up opened group location to fill in */ obj_loc.oloc = &obj_oloc; obj_loc.path = &obj_path; H5G_loc_reset(&obj_loc); /* Find the object's location */ if(H5G_loc_find(&loc, obj_name, &obj_loc/*out*/, lapl_id, H5AC_ind_dxpl_id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_NOTFOUND, FAIL, "object not found") loc_found = TRUE; /* Open the object */ if((obj_loc_id = H5O_open_by_loc(&obj_loc, lapl_id, H5AC_ind_dxpl_id, TRUE)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTOPENOBJ, FAIL, "unable to open object") /* Build attribute operator info */ attr_op.op_type = H5A_ATTR_OP_APP2; attr_op.u.app_op2 = op; /* Call attribute iteration routine */ last_attr = start_idx = (idx ? *idx : 0); if((ret_value = H5O_attr_iterate(obj_loc_id, H5AC_ind_dxpl_id, idx_type, order, start_idx, &last_attr, &attr_op, op_data)) < 0) HERROR(H5E_ATTR, H5E_BADITER, "error iterating over attributes"); /* Set the last attribute information */ if(idx) *idx = last_attr; done: /* Release resources */ if(obj_loc_id > 0) { if(H5I_dec_app_ref(obj_loc_id) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTDEC, FAIL, "unable to close temporary object") } /* end if */ else if(loc_found && H5G_loc_free(&obj_loc) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't free location") FUNC_LEAVE_API(ret_value) } /* H5Aiterate_by_name() */ /*-------------------------------------------------------------------------- NAME H5Adelete PURPOSE Deletes an attribute from a location USAGE herr_t H5Adelete(loc_id, name) hid_t loc_id; IN: Object (dataset or group) to have attribute deleted from const char *name; IN: Name of attribute to delete RETURNS Non-negative on success/Negative on failure DESCRIPTION This function removes the named attribute from a dataset or group. --------------------------------------------------------------------------*/ herr_t H5Adelete(hid_t loc_id, const char *name) { H5G_loc_t loc; /* Object location */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE2("e", "i*s", loc_id, name); /* check arguments */ if(H5I_ATTR == H5I_get_type(loc_id)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "location is not valid for an attribute") if(H5G_loc(loc_id, &loc) < 0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") if(!name || !*name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no name") /* Delete the attribute from the location */ if(H5O_attr_remove(loc.oloc, name, H5AC_dxpl_id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTDELETE, FAIL, "unable to delete attribute") done: FUNC_LEAVE_API(ret_value) } /* H5Adelete() */ /*-------------------------------------------------------------------------- NAME H5Adelete_by_name PURPOSE Deletes an attribute from a location USAGE herr_t H5Adelete_by_name(loc_id, obj_name, attr_name, lapl_id) hid_t loc_id; IN: Base location for object const char *obj_name; IN: Name of object relative to location const char *attr_name; IN: Name of attribute to delete hid_t lapl_id; IN: Link access property list RETURNS Non-negative on success/Negative on failure DESCRIPTION This function removes the named attribute from an object. --------------------------------------------------------------------------*/ herr_t H5Adelete_by_name(hid_t loc_id, const char *obj_name, const char *attr_name, hid_t lapl_id) { H5G_loc_t loc; /* Object location */ H5G_loc_t obj_loc; /* Location used to open group */ H5G_name_t obj_path; /* Opened object group hier. path */ H5O_loc_t obj_oloc; /* Opened object object location */ hbool_t loc_found = FALSE; /* Entry at 'obj_name' found */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE4("e", "i*s*si", loc_id, obj_name, attr_name, lapl_id); /* check arguments */ if(H5I_ATTR == H5I_get_type(loc_id)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "location is not valid for an attribute") if(H5G_loc(loc_id, &loc) < 0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") if(!obj_name || !*obj_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no object name") if(!attr_name || !*attr_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no attribute name") if(H5P_DEFAULT == lapl_id) lapl_id = H5P_LINK_ACCESS_DEFAULT; else if(TRUE != H5P_isa_class(lapl_id, H5P_LINK_ACCESS)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not link access property list ID") /* Set up opened group location to fill in */ obj_loc.oloc = &obj_oloc; obj_loc.path = &obj_path; H5G_loc_reset(&obj_loc); /* Find the object's location */ if(H5G_loc_find(&loc, obj_name, &obj_loc/*out*/, lapl_id, H5AC_ind_dxpl_id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_NOTFOUND, FAIL, "object not found") loc_found = TRUE; /* Delete the attribute from the location */ if(H5O_attr_remove(obj_loc.oloc, attr_name, H5AC_dxpl_id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTDELETE, FAIL, "unable to delete attribute") done: /* Release resources */ if(loc_found && H5G_loc_free(&obj_loc) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't free location") FUNC_LEAVE_API(ret_value) } /* H5Adelete_by_name() */ /*-------------------------------------------------------------------------- NAME H5Adelete_by_idx PURPOSE Deletes an attribute from a location, according to the order within an index USAGE herr_t H5Adelete_by_idx(loc_id, obj_name, idx_type, order, n, lapl_id) hid_t loc_id; IN: Base location for object const char *obj_name; IN: Name of object relative to location H5_index_t idx_type; IN: Type of index to use H5_iter_order_t order; IN: Order to iterate over index hsize_t n; IN: Offset within index hid_t lapl_id; IN: Link access property list RETURNS Non-negative on success/Negative on failure DESCRIPTION This function removes an attribute from an object, using the IDX_TYPE index to delete the N'th attribute in ORDER direction in the index. The object is specified relative to the LOC_ID with the OBJ_NAME path. To remove an attribute on the object specified by LOC_ID, pass in "." for OBJ_NAME. The link access property list, LAPL_ID, controls aspects of the group hierarchy traversal when using the OBJ_NAME to locate the final object to operate on. --------------------------------------------------------------------------*/ herr_t H5Adelete_by_idx(hid_t loc_id, const char *obj_name, H5_index_t idx_type, H5_iter_order_t order, hsize_t n, hid_t lapl_id) { H5G_loc_t loc; /* Object location */ H5G_loc_t obj_loc; /* Location used to open group */ H5G_name_t obj_path; /* Opened object group hier. path */ H5O_loc_t obj_oloc; /* Opened object object location */ hbool_t loc_found = FALSE; /* Entry at 'obj_name' found */ herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE6("e", "i*sIiIohi", loc_id, obj_name, idx_type, order, n, lapl_id); /* check arguments */ if(H5I_ATTR == H5I_get_type(loc_id)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "location is not valid for an attribute") if(H5G_loc(loc_id, &loc) < 0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") if(!obj_name || !*obj_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no object name") if(idx_type <= H5_INDEX_UNKNOWN || idx_type >= H5_INDEX_N) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid index type specified") if(order <= H5_ITER_UNKNOWN || order >= H5_ITER_N) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid iteration order specified") if(H5P_DEFAULT == lapl_id) lapl_id = H5P_LINK_ACCESS_DEFAULT; else if(TRUE != H5P_isa_class(lapl_id, H5P_LINK_ACCESS)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not link access property list ID") /* Set up opened group location to fill in */ obj_loc.oloc = &obj_oloc; obj_loc.path = &obj_path; H5G_loc_reset(&obj_loc); /* Find the object's location */ if(H5G_loc_find(&loc, obj_name, &obj_loc/*out*/, lapl_id, H5AC_ind_dxpl_id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_NOTFOUND, FAIL, "object not found") loc_found = TRUE; /* Delete the attribute from the location */ if(H5O_attr_remove_by_idx(obj_loc.oloc, idx_type, order, n, H5AC_dxpl_id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTDELETE, FAIL, "unable to delete attribute") done: /* Release resources */ if(loc_found && H5G_loc_free(&obj_loc) < 0) HDONE_ERROR(H5E_ATTR, H5E_CANTRELEASE, FAIL, "can't free location") FUNC_LEAVE_API(ret_value) } /* H5Adelete_by_idx() */ /*-------------------------------------------------------------------------- NAME H5Aclose PURPOSE Close an attribute ID USAGE herr_t H5Aclose (attr_id) hid_t attr_id; IN: Attribute to release access to RETURNS Non-negative on success/Negative on failure DESCRIPTION This function releases an attribute from use. Further use of the attribute ID will result in undefined behavior. --------------------------------------------------------------------------*/ herr_t H5Aclose(hid_t attr_id) { herr_t ret_value = SUCCEED; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE1("e", "i", attr_id); /* check arguments */ if(NULL == H5I_object_verify(attr_id, H5I_ATTR)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not an attribute") /* Decrement references to that atom (and close it) */ if(H5I_dec_app_ref(attr_id) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTDEC, FAIL, "can't close attribute") done: FUNC_LEAVE_API(ret_value) } /* H5Aclose() */ /*------------------------------------------------------------------------- * Function: H5Aexists * * Purpose: Checks if an attribute with a given name exists on an opened * object. * * Return: Success: TRUE/FALSE * Failure: Negative * * Programmer: Quincey Koziol * Thursday, November 1, 2007 * *------------------------------------------------------------------------- */ htri_t H5Aexists(hid_t obj_id, const char *attr_name) { H5G_loc_t loc; /* Object location */ htri_t ret_value; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE2("t", "i*s", obj_id, attr_name); /* check arguments */ if(H5I_ATTR == H5I_get_type(obj_id)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "location is not valid for an attribute") if(H5G_loc(obj_id, &loc) < 0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") if(!attr_name || !*attr_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no attribute name") /* Check if the attribute exists */ if((ret_value = H5O_attr_exists(loc.oloc, attr_name, H5AC_ind_dxpl_id)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "unable to determine if attribute exists") done: FUNC_LEAVE_API(ret_value) } /* H5Aexists() */ /*------------------------------------------------------------------------- * Function: H5Aexists_by_name * * Purpose: Checks if an attribute with a given name exists on an object. * * Return: Success: TRUE/FALSE * Failure: Negative * * Programmer: Quincey Koziol * Thursday, November 1, 2007 * *------------------------------------------------------------------------- */ htri_t H5Aexists_by_name(hid_t loc_id, const char *obj_name, const char *attr_name, hid_t lapl_id) { H5G_loc_t loc; /* Object location */ htri_t ret_value; /* Return value */ FUNC_ENTER_API(FAIL) H5TRACE4("t", "i*s*si", loc_id, obj_name, attr_name, lapl_id); /* check arguments */ if(H5I_ATTR == H5I_get_type(loc_id)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "location is not valid for an attribute") if(H5G_loc(loc_id, &loc) < 0) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not a location") if(!obj_name || !*obj_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no object name") if(!attr_name || !*attr_name) HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "no attribute name") if(H5P_DEFAULT == lapl_id) lapl_id = H5P_LINK_ACCESS_DEFAULT; else if(TRUE != H5P_isa_class(lapl_id, H5P_LINK_ACCESS)) HGOTO_ERROR(H5E_ARGS, H5E_BADTYPE, FAIL, "not link access property list ID") if((ret_value = H5A_exists_by_name(loc, obj_name, attr_name, lapl_id, H5AC_ind_dxpl_id)) < 0) HGOTO_ERROR(H5E_ATTR, H5E_CANTGET, FAIL, "unable to determine if attribute exists") done: FUNC_LEAVE_API(ret_value) } /* H5Aexists_by_name() */