mirror/hdf5
2
0
Fork 0
mirror of https://github.com/HDFGroup/hdf5.git synced 2024-11-27 02:10:55 +08:00
Code Issues Packages Projects Releases Wiki Activity
b4ff3e6e79
hdf5/src/H5Gloc.c
Quincey Koziol b4ff3e6e79 [svn-r16560] Description: 
Remove another call to H5E_clear_stack() from within the library.

    Clean up lots of compiler warnings.

Tested on:
    Mac OS X/32 10.5.6 (amazon)
    (followup on other platforms forthcoming)
2009-03-10 14:00:39 -05:00

899 lines
30 KiB
C
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*-------------------------------------------------------------------------
*
* Created: H5Gloc.c
* Sep 13 2005
* Quincey Koziol <koziol@ncsa.uiuc.edu>
*
* Purpose: Functions for working with group "locations"
*
*-------------------------------------------------------------------------
*/
/****************/
/* Module Setup */
/****************/
#define H5G_PACKAGE /*suppress error about including H5Gpkg */
/***********/
/* Headers */
/***********/
#include "H5private.h" /* Generic Functions */
#include "H5Aprivate.h" /* Attributes */
#include "H5Dprivate.h" /* Datasets */
#include "H5Eprivate.h" /* Error handling */
#include "H5Gpkg.h" /* Groups */
#include "H5Iprivate.h" /* IDs */
/****************/
/* Local Macros */
/****************/
/******************/
/* Local Typedefs */
/******************/
/* User data for looking up an object in a group */
typedef struct {
/* upward */
H5G_loc_t *loc; /* Group location to set */
} H5G_loc_fnd_t;
/* User data for looking up an object in a group by index */
typedef struct {
/* downward */
hid_t lapl_id; /* LAPL to use for operation */
hid_t dxpl_id; /* DXPL to use for operation */
H5_index_t idx_type; /* Index to use */
H5_iter_order_t order; /* Iteration order within index */
hsize_t n; /* Offset within index */
/* upward */
H5G_loc_t *loc; /* Group location to set */
} H5G_loc_fbi_t;
/* User data for getting an object's info in a group */
typedef struct {
/* downward */
hid_t dxpl_id; /* DXPL to use for operation */
hbool_t want_ih_info; /* Whether to retrieve the index & heap info */
/* upward */
H5O_info_t *oinfo; /* Object information to retrieve */
} H5G_loc_info_t;
/* User data for setting an object's comment in a group */
typedef struct {
/* downward */
hid_t dxpl_id; /* DXPL to use for operation */
const char *comment; /* Object comment buffer */
/* upward */
} H5G_loc_sc_t;
/* User data for getting an object's comment in a group */
typedef struct {
/* downward */
hid_t dxpl_id; /* DXPL to use for operation */
char *comment; /* Object comment buffer */
size_t bufsize; /* Size of object comment buffer */
/* upward */
ssize_t comment_size; /* Actual size of object comment */
} H5G_loc_gc_t;
/********************/
/* Local Prototypes */
/********************/
/* Group traversal callbacks */
static herr_t H5G_loc_find_cb(H5G_loc_t *grp_loc, const char *name,
const H5O_link_t *lnk, H5G_loc_t *obj_loc, void *_udata,
H5G_own_loc_t *own_loc);
static herr_t H5G_loc_find_by_idx_cb(H5G_loc_t *grp_loc, const char *name,
const H5O_link_t *lnk, H5G_loc_t *obj_loc, void *_udata,
H5G_own_loc_t *own_loc);
static herr_t H5G_loc_set_comment_cb(H5G_loc_t *grp_loc, const char *name,
const H5O_link_t *lnk, H5G_loc_t *obj_loc, void *_udata,
H5G_own_loc_t *own_loc);
static herr_t H5G_loc_get_comment_cb(H5G_loc_t *grp_loc, const char *name,
const H5O_link_t *lnk, H5G_loc_t *obj_loc, void *_udata,
H5G_own_loc_t *own_loc);
/*********************/
/* Package Variables */
/*********************/
/*****************************/
/* Library Private Variables */
/*****************************/
/*******************/
/* Local Variables */
/*******************/
/*-------------------------------------------------------------------------
* Function: H5G_loc
*
* Purpose: Given an object ID return a location for the object.
*
* Return: Success: Group pointer.
* Failure: NULL
*
* Programmer: Quincey Koziol
* Tuesday, September 13, 2005
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_loc(hid_t loc_id, H5G_loc_t *loc)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(H5G_loc, FAIL)
switch(H5I_get_type(loc_id)) {
case H5I_FILE:
{
H5F_t *f;
/* Get the file struct */
if(NULL == (f = (H5F_t *)H5I_object(loc_id)))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid file ID")
/* Construct a group location for root group of the file */
if(H5G_loc_root(f, loc) < 0)
HGOTO_ERROR(H5E_SYM, H5E_BADVALUE, FAIL, "unable to create location for file")
} /* end case */
break;
case H5I_GENPROP_CLS:
case H5I_GENPROP_LST:
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "unable to get group location of property list")
case H5I_ERROR_CLASS:
case H5I_ERROR_MSG:
case H5I_ERROR_STACK:
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "unable to get group location of error class, message or stack")
case H5I_GROUP:
{
H5G_t *group;
if(NULL == (group = (H5G_t *)H5I_object(loc_id)))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid group ID")
if(NULL == (loc->oloc = H5G_oloc(group)))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "unable to get object location of group")
if(NULL == (loc->path = H5G_nameof(group)))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "unable to get path of group")
} /* end case */
break;
case H5I_DATATYPE:
{
H5T_t *dt;
if(NULL == (dt = (H5T_t *)H5I_object(loc_id)))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid type ID")
if(NULL == (loc->oloc = H5T_oloc(dt)))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "unable to get object location of datatype")
if(NULL == (loc->path = H5T_nameof(dt)))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "unable to get path of datatype")
} /* end case */
break;
case H5I_DATASPACE:
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "unable to get group location of dataspace")
case H5I_DATASET:
{
H5D_t *dset;
if(NULL == (dset = (H5D_t *)H5I_object(loc_id)))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid data ID")
if(NULL == (loc->oloc = H5D_oloc(dset)))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "unable to get object location of dataset")
if(NULL == (loc->path = H5D_nameof(dset)))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "unable to get path of dataset")
} /* end case */
break;
case H5I_ATTR:
{
H5A_t *attr;
if(NULL == (attr = (H5A_t *)H5I_object(loc_id)))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid attribute ID")
if(NULL == (loc->oloc = H5A_oloc(attr)))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "unable to get object location of attribute")
if(NULL == (loc->path = H5A_nameof(attr)))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "unable to get path of attribute")
} /* end case */
break;
case H5I_REFERENCE:
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "unable to get group location of reference")
default:
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid object ID")
} /* end switch */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_loc() */
/*-------------------------------------------------------------------------
* Function: H5G_loc_root
*
* Purpose: Construct a "group location" for the root group of a file
*
* Return: Success: Non-negative
* Failure: Negative
*
* Programmer: Quincey Koziol
* koziol@hdfgroup.org
* Mar 5 2007
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_loc_root(H5F_t *f, H5G_loc_t *loc)
{
H5G_t *root_grp; /* Pointer to root group's info */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(H5G_loc_root, FAIL)
HDassert(f);
HDassert(loc);
/* Retrieve the root group for the file */
root_grp = H5G_rootof(f);
HDassert(root_grp);
/* Build the group location for the root group */
if(NULL == (loc->oloc = H5G_oloc(root_grp)))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "unable to get object location for root group")
if(NULL == (loc->path = H5G_nameof(root_grp)))
HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "unable to get path for root group")
/* Patch up root group's object location to reflect this file */
/* (Since the root group info is only stored once for files which
* share an underlying low-level file)
*/
/* (but only for non-mounted files) */
if(!H5F_is_mount(f)) {
loc->oloc->file = f;
loc->oloc->holding_file = FALSE;
} /* end if */
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_loc_root() */
/*-------------------------------------------------------------------------
* Function: H5G_loc_copy
*
* Purpose: Copy over information for a location
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Tuesday, September 13, 2005
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_loc_copy(H5G_loc_t *dst, const H5G_loc_t *src, H5_copy_depth_t depth)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(H5G_loc_copy, FAIL)
/* Check args. */
HDassert(dst);
HDassert(src);
/* Copy components of the location */
if(H5O_loc_copy(dst->oloc, src->oloc, depth) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to copy entry")
if(H5G_name_copy(dst->path, src->path, depth) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to copy path")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_loc_copy() */
/*-------------------------------------------------------------------------
* Function: H5G_loc_reset
*
* Purpose: Reset information for a location
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Tuesday, September 13, 2005
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_loc_reset(H5G_loc_t *loc)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(H5G_loc_reset, FAIL)
/* Check args. */
HDassert(loc);
/* Reset components of the location */
if(H5O_loc_reset(loc->oloc) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to reset entry")
if(H5G_name_reset(loc->path) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, FAIL, "unable to reset path")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_loc_reset() */
/*-------------------------------------------------------------------------
* Function: H5G_loc_free
*
* Purpose: Free information for a location
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Tuesday, September 13, 2005
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_loc_free(H5G_loc_t *loc)
{
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(H5G_loc_free, FAIL)
/* Check args. */
HDassert(loc);
/* Reset components of the location */
if(H5G_name_free(loc->path) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTRELEASE, FAIL, "unable to free path")
if(H5O_loc_free(loc->oloc) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_CANTRELEASE, FAIL, "unable to free object header location")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_loc_free() */
/*-------------------------------------------------------------------------
* Function: H5G_loc_find_cb
*
* Purpose: Callback for retrieving object location for an object in a group
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Monday, October 17, 2005
*
*-------------------------------------------------------------------------
*/
static herr_t
H5G_loc_find_cb(H5G_loc_t UNUSED *grp_loc/*in*/, const char UNUSED *name,
const H5O_link_t UNUSED *lnk, H5G_loc_t *obj_loc, void *_udata/*in,out*/,
H5G_own_loc_t *own_loc/*out*/)
{
H5G_loc_fnd_t *udata = (H5G_loc_fnd_t *)_udata; /* User data passed in */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5G_loc_find_cb)
/* Check if the name in this group resolved to a valid object */
if(obj_loc == NULL)
HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "object doesn't exist")
/* Take ownership of the object's group location */
/* (Group traversal callbacks are responsible for either taking ownership
* of the group location for the object, or freeing it. - QAK)
*/
H5G_loc_copy(udata->loc, obj_loc, H5_COPY_SHALLOW);
*own_loc = H5G_OWN_OBJ_LOC;
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_loc_find_cb() */
/*-------------------------------------------------------------------------
* Function: H5G_loc_find
*
* Purpose: Find a symbol from a location
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Tuesday, September 13, 2005
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_loc_find(const H5G_loc_t *loc, const char *name, H5G_loc_t *obj_loc/*out*/,
hid_t lapl_id, hid_t dxpl_id)
{
H5G_loc_fnd_t udata; /* User data for traversal callback */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(H5G_loc_find, FAIL)
/* Check args. */
HDassert(loc);
HDassert(name && *name);
HDassert(obj_loc);
/* Set up user data for locating object */
udata.loc = obj_loc;
/* Traverse group hierarchy to locate object */
if(H5G_traverse(loc, name, H5G_TARGET_NORMAL, H5G_loc_find_cb, &udata, lapl_id, dxpl_id) < 0)
HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "can't find object")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_loc_find() */
/*-------------------------------------------------------------------------
* Function: H5G_loc_find_by_idx_cb
*
* Purpose: Callback for retrieving object location for an object in a group
* according to the order within an index
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Monday, November 20, 2006
*
*-------------------------------------------------------------------------
*/
static herr_t
H5G_loc_find_by_idx_cb(H5G_loc_t UNUSED *grp_loc/*in*/, const char UNUSED *name,
const H5O_link_t UNUSED *lnk, H5G_loc_t *obj_loc, void *_udata/*in,out*/,
H5G_own_loc_t *own_loc/*out*/)
{
H5G_loc_fbi_t *udata = (H5G_loc_fbi_t *)_udata; /* User data passed in */
H5O_link_t fnd_lnk; /* Link within group */
hbool_t lnk_copied = FALSE; /* Whether the link was copied */
size_t links_left = 1; /* # of links left to traverse (somewhat bogus... :-/ ) */
hbool_t obj_loc_valid = FALSE; /* Flag to indicate that the object location is valid */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5G_loc_find_by_idx_cb)
/* Check if the name in this group resolved to a valid link */
if(obj_loc == NULL)
HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "group doesn't exist")
/* Query link */
if(H5G_obj_lookup_by_idx(obj_loc->oloc, udata->idx_type, udata->order,
udata->n, &fnd_lnk, udata->dxpl_id) < 0)
HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "link not found")
lnk_copied = TRUE;
/* Build the initial object location for the link */
if(H5G_link_to_loc(obj_loc, &fnd_lnk, udata->loc) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "cannot initialize object location")
obj_loc_valid = TRUE;
/* Perform any special traversals that the link needs */
/* (soft links, user-defined links, file mounting, etc.) */
/* (may modify the object location) */
if(H5G_traverse_special(obj_loc, &fnd_lnk, H5G_TARGET_NORMAL, &links_left, TRUE, udata->loc, udata->lapl_id, udata->dxpl_id) < 0)
HGOTO_ERROR(H5E_LINK, H5E_TRAVERSE, FAIL, "special link traversal failed")
done:
/* Reset the link information, if we have a copy */
if(lnk_copied)
H5O_msg_reset(H5O_LINK_ID, &fnd_lnk);
/* Release the object location if we failed after copying it */
if(ret_value < 0 && obj_loc_valid)
if(H5G_loc_free(udata->loc) < 0)
HDONE_ERROR(H5E_SYM, H5E_CANTRELEASE, FAIL, "can't free location")
/* Indicate that this callback didn't take ownership of the group *
* location for the object */
*own_loc = H5G_OWN_NONE;
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_loc_find_by_idx_cb() */
/*-------------------------------------------------------------------------
* Function: H5G_loc_find_by_idx
*
* Purpose: Find a symbol from a location, according to the order in an index
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Monday, November 20, 2006
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_loc_find_by_idx(H5G_loc_t *loc, const char *group_name, H5_index_t idx_type,
H5_iter_order_t order, hsize_t n, H5G_loc_t *obj_loc/*out*/, hid_t lapl_id,
hid_t dxpl_id)
{
H5G_loc_fbi_t udata; /* User data for traversal callback */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(H5G_loc_find_by_idx, FAIL)
/* Check args. */
HDassert(loc);
HDassert(group_name && *group_name);
HDassert(obj_loc);
/* Set up user data for locating object */
udata.dxpl_id = dxpl_id;
udata.lapl_id = lapl_id;
udata.idx_type = idx_type;
udata.order = order;
udata.n = n;
udata.loc = obj_loc;
/* Traverse group hierarchy to locate object */
if(H5G_traverse(loc, group_name, H5G_TARGET_NORMAL, H5G_loc_find_by_idx_cb, &udata, lapl_id, dxpl_id) < 0)
HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "can't find object")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_loc_find_by_idx() */
/*-------------------------------------------------------------------------
* Function: H5G_loc_insert
*
* Purpose: Insert an object at a location
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Tuesday, September 13, 2005
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_loc_insert(H5G_loc_t *grp_loc, const char *name, H5G_loc_t *obj_loc,
hid_t dxpl_id)
{
H5O_link_t lnk; /* Link for object to insert */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(H5G_loc_insert, FAIL)
/* Check args. */
HDassert(grp_loc);
HDassert(name && *name);
HDassert(obj_loc);
/* Create link object for the object location */
lnk.type = H5L_TYPE_HARD;
lnk.cset = H5F_DEFAULT_CSET;
lnk.corder = 0; /* Will be reset if the group is tracking creation order */
lnk.corder_valid = FALSE; /* Indicate that the creation order isn't valid (yet) */
/* Casting away const OK -QAK */
lnk.name = (char *)name;
lnk.u.hard.addr = obj_loc->oloc->addr;
/* Insert new group into current group's symbol table */
if(H5G_obj_insert(grp_loc->oloc, name, &lnk, TRUE, dxpl_id) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINSERT, FAIL, "unable to insert object")
/* Set the name of the object location */
if(H5G_name_set(grp_loc->path, obj_loc->path, name) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTINIT, FAIL, "cannot set name")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_loc_insert() */
/*-------------------------------------------------------------------------
* Function: H5G_loc_info_cb
*
* Purpose: Callback for retrieving object info for an object in a group
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Thursday, November 23, 2006
*
*-------------------------------------------------------------------------
*/
static herr_t
H5G_loc_info_cb(H5G_loc_t UNUSED *grp_loc/*in*/, const char UNUSED *name, const H5O_link_t UNUSED *lnk,
H5G_loc_t *obj_loc, void *_udata/*in,out*/, H5G_own_loc_t *own_loc/*out*/)
{
H5G_loc_info_t *udata = (H5G_loc_info_t *)_udata; /* User data passed in */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5G_loc_info_cb)
/* Check if the name in this group resolved to a valid link */
if(obj_loc == NULL)
HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "name doesn't exist")
/* Query object information */
if(H5O_get_info(obj_loc->oloc, udata->dxpl_id, udata->want_ih_info, udata->oinfo) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTGET, FAIL, "can't get object info")
done:
/* Indicate that this callback didn't take ownership of the group *
* location for the object */
*own_loc = H5G_OWN_NONE;
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_loc_info_cb() */
/*-------------------------------------------------------------------------
* Function: H5G_loc_info
*
* Purpose: Retrieve the information for an object from a group location
* and path to that object
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Thursday, November 23, 2006
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_loc_info(H5G_loc_t *loc, const char *name, hbool_t want_ih_info, H5O_info_t *oinfo/*out*/,
hid_t lapl_id, hid_t dxpl_id)
{
H5G_loc_info_t udata; /* User data for traversal callback */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(H5G_loc_info, FAIL)
/* Check args. */
HDassert(loc);
HDassert(name && *name);
HDassert(oinfo);
/* Set up user data for locating object */
udata.dxpl_id = dxpl_id;
udata.want_ih_info = want_ih_info;
udata.oinfo = oinfo;
/* Traverse group hierarchy to locate object */
if(H5G_traverse(loc, name, H5G_TARGET_NORMAL, H5G_loc_info_cb, &udata, lapl_id, dxpl_id) < 0)
HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "can't find object")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_loc_info() */
/*-------------------------------------------------------------------------
* Function: H5G_loc_set_comment_cb
*
* Purpose: Callback for (re)setting object comment for an object in a group
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Thursday, August 30, 2007
*
*-------------------------------------------------------------------------
*/
static herr_t
H5G_loc_set_comment_cb(H5G_loc_t UNUSED *grp_loc/*in*/, const char UNUSED *name, const H5O_link_t UNUSED *lnk,
H5G_loc_t *obj_loc, void *_udata/*in,out*/, H5G_own_loc_t *own_loc/*out*/)
{
H5G_loc_sc_t *udata = (H5G_loc_sc_t *)_udata; /* User data passed in */
H5O_name_t comment; /* Object header "comment" message */
htri_t exists; /* Whether a "comment" message already exists */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5G_loc_set_comment_cb)
/* Check if the name in this group resolved to a valid link */
if(obj_loc == NULL)
HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "name doesn't exist")
/* Check for existing comment message */
if((exists = H5O_msg_exists(obj_loc->oloc, H5O_NAME_ID, udata->dxpl_id)) < 0)
HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "unable to read object header")
/* Remove the previous comment message if any */
if(exists)
if(H5O_msg_remove(obj_loc->oloc, H5O_NAME_ID, 0, TRUE, udata->dxpl_id) < 0)
HGOTO_ERROR(H5E_SYM, H5E_CANTDELETE, FAIL, "unable to delete existing comment object header message")
/* Add the new message */
if(udata->comment && *udata->comment) {
/* Casting away const OK -QAK */
comment.s = (char *)udata->comment;
if(H5O_msg_create(obj_loc->oloc, H5O_NAME_ID, 0, H5O_UPDATE_TIME, &comment, udata->dxpl_id) < 0)
HGOTO_ERROR(H5E_OHDR, H5E_CANTINIT, FAIL, "unable to set comment object header message")
} /* end if */
done:
/* Indicate that this callback didn't take ownership of the group *
* location for the object */
*own_loc = H5G_OWN_NONE;
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_loc_set_comment_cb() */
/*-------------------------------------------------------------------------
* Function: H5G_loc_set_comment
*
* Purpose: (Re)set the information for an object from a group location
* and path to that object
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Thursday, August 30, 2007
*
*-------------------------------------------------------------------------
*/
herr_t
H5G_loc_set_comment(H5G_loc_t *loc, const char *name, const char *comment,
hid_t lapl_id, hid_t dxpl_id)
{
H5G_loc_sc_t udata; /* User data for traversal callback */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI(H5G_loc_set_comment, FAIL)
/* Check args. */
HDassert(loc);
HDassert(name && *name);
/* Set up user data for locating object */
udata.dxpl_id = dxpl_id;
udata.comment = comment;
/* Traverse group hierarchy to locate object */
if(H5G_traverse(loc, name, H5G_TARGET_NORMAL, H5G_loc_set_comment_cb, &udata, lapl_id, dxpl_id) < 0)
HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "can't find object")
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_loc_set_comment() */
/*-------------------------------------------------------------------------
* Function: H5G_loc_get_comment_cb
*
* Purpose: Callback for retrieving object comment for an object in a group
*
* Return: Non-negative on success/Negative on failure
*
* Programmer: Quincey Koziol
* Thursday, August 30, 2007
*
*-------------------------------------------------------------------------
*/
static herr_t
H5G_loc_get_comment_cb(H5G_loc_t UNUSED *grp_loc/*in*/, const char UNUSED *name, const H5O_link_t UNUSED *lnk,
H5G_loc_t *obj_loc, void *_udata/*in,out*/, H5G_own_loc_t *own_loc/*out*/)
{
H5G_loc_gc_t *udata = (H5G_loc_gc_t *)_udata; /* User data passed in */
H5O_name_t comment; /* Object header "comment" message */
herr_t ret_value = SUCCEED; /* Return value */
FUNC_ENTER_NOAPI_NOINIT(H5G_loc_get_comment_cb)
/* Check if the name in this group resolved to a valid link */
if(obj_loc == NULL)
HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "name doesn't exist")
/* Query object comment */
comment.s = NULL;
if(NULL == H5O_msg_read(obj_loc->oloc, H5O_NAME_ID, &comment, udata->dxpl_id)) {
if(udata->comment && udata->bufsize > 0)
udata->comment[0] = '\0';
udata->comment_size = 0;
} else {
if(udata->comment && udata->bufsize)
HDstrncpy(udata->comment, comment.s, udata->bufsize);
udata->comment_size = (ssize_t)HDstrlen(comment.s);
H5O_msg_reset(H5O_NAME_ID, &comment);
} /* end else */
done:
/* Indicate that this callback didn't take ownership of the group *
* location for the object */
*own_loc = H5G_OWN_NONE;
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_loc_get_comment_cb() */
/*-------------------------------------------------------------------------
* Function: H5G_loc_get_comment
*
* Purpose: Retrieve the information for an object from a group location
* and path to that object
*
* Return: Success: Number of bytes in the comment including the
* null terminator. Zero if the object has no
* comment.
*
* Failure: Negative
*
* Programmer: Quincey Koziol
* Thursday, August 30, 2007
*
*-------------------------------------------------------------------------
*/
ssize_t
H5G_loc_get_comment(H5G_loc_t *loc, const char *name, char *comment/*out*/,
size_t bufsize, hid_t lapl_id, hid_t dxpl_id)
{
H5G_loc_gc_t udata; /* User data for traversal callback */
ssize_t ret_value; /* Return value */
FUNC_ENTER_NOAPI(H5G_loc_get_comment, FAIL)
/* Check args. */
HDassert(loc);
HDassert(name && *name);
/* Set up user data for locating object */
udata.dxpl_id = dxpl_id;
udata.comment = comment;
udata.bufsize = bufsize;
udata.comment_size = (-1);
/* Traverse group hierarchy to locate object */
if(H5G_traverse(loc, name, H5G_TARGET_NORMAL, H5G_loc_get_comment_cb, &udata, lapl_id, dxpl_id) < 0)
HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, FAIL, "can't find object")
/* Set the return value */
ret_value = udata.comment_size;
done:
FUNC_LEAVE_NOAPI(ret_value)
} /* end H5G_loc_get_comment() */
Reference in New Issue View Git Blame Copy Permalink