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hdf5/tools/lib/h5trav.c
Neil Fortner 6d28e06f30 [svn-r15668] Purpose: Add feature requested in bug #1282 
Description: Adds capability to h5ls to traverse external links when the -r
(recursive) option is given.  Changes to the way absolute path names are patched
in h5trav.c.  Changes to the way recursive traversal starting from a non-root
group is handled (which also fixes some preexisting issues).  Tests added for
these cases.

Tested: kagiso, smirom, linew (h5committest)
2008-09-21 13:35:43 -05:00

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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* 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. *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
#include "h5trav.h"
#include "H5private.h"
/*-------------------------------------------------------------------------
* local typedefs
*-------------------------------------------------------------------------
*/
typedef struct trav_addr_t {
size_t nalloc;
size_t nused;
struct {
haddr_t addr;
char *path;
} *objs;
} trav_addr_t;
typedef struct {
h5trav_obj_func_t visit_obj; /* Callback for visiting objects */
h5trav_lnk_func_t visit_lnk; /* Callback for visiting links */
void *udata; /* User data to pass to callbacks */
} trav_visitor_t;
typedef struct {
trav_addr_t *seen; /* List of addresses seen already */
const trav_visitor_t *visitor; /* Information for visiting each link/object */
hbool_t is_absolute; /* Whether the traversal has absolute paths */
const char *base_grp_name; /* Name of the group that serves as the base
* for iteration */
} trav_ud_traverse_t;
typedef struct {
hid_t fid; /* File ID being traversed */
} trav_print_udata_t;
/*-------------------------------------------------------------------------
* local functions
*-------------------------------------------------------------------------
*/
static void trav_table_add(trav_table_t *table,
const char *objname,
const H5O_info_t *oinfo);
static void trav_table_addlink(trav_table_t *table,
haddr_t objno,
const char *path);
/*-------------------------------------------------------------------------
* "h5trav info" public functions. used in h5diff
*-------------------------------------------------------------------------
*/
/*-------------------------------------------------------------------------
* Function: trav_addr_add
*
* Purpose: Add a hardlink address to visited data structure
*
* Return: void
*
* Programmer: Quincey Koziol, koziol@hdfgroup.org
*
* Date: September 1, 2007
*
*-------------------------------------------------------------------------
*/
static void
trav_addr_add(trav_addr_t *visited, haddr_t addr, const char *path)
{
size_t idx; /* Index of address to use */
/* Allocate space if necessary */
if(visited->nused == visited->nalloc) {
visited->nalloc = MAX(1, visited->nalloc * 2);;
visited->objs = HDrealloc(visited->objs, visited->nalloc * sizeof(visited->objs[0]));
} /* end if */
/* Append it */
idx = visited->nused++;
visited->objs[idx].addr = addr;
visited->objs[idx].path = HDstrdup(path);
} /* end trav_addr_add() */
/*-------------------------------------------------------------------------
* Function: trav_addr_visited
*
* Purpose: Check if an address has already been visited
*
* Return: TRUE/FALSE
*
* Programmer: Quincey Koziol, koziol@hdfgroup.org
*
* Date: September 1, 2007
*
*-------------------------------------------------------------------------
*/
static const char *
trav_addr_visited(trav_addr_t *visited, haddr_t addr)
{
size_t u; /* Local index variable */
/* Look for address */
for(u = 0; u < visited->nused; u++)
/* Check for address already in array */
if(visited->objs[u].addr == addr)
return(visited->objs[u].path);
/* Didn't find address */
return(NULL);
} /* end trav_addr_visited() */
/*-------------------------------------------------------------------------
* Function: traverse_cb
*
* Purpose: Iterator callback for traversing objects in file
*
* Programmer: Quincey Koziol, koziol@hdfgroup.org
*
* Date: September 1, 2007
*
*-------------------------------------------------------------------------
*/
static herr_t
traverse_cb(hid_t loc_id, const char *path, const H5L_info_t *linfo,
void *_udata)
{
trav_ud_traverse_t *udata = (trav_ud_traverse_t *)_udata; /* User data */
char *new_name = NULL;
const char *full_name;
const char *already_visited = NULL; /* Whether the link/object was already visited */
/* Create the full path name for the link */
if(udata->is_absolute) {
size_t base_len = HDstrlen(udata->base_grp_name);
size_t add_slash = base_len ? ((udata->base_grp_name)[base_len-1] != '/') : 1;
if(NULL == (new_name = HDmalloc(base_len + add_slash + HDstrlen(path) + 1)))
return(H5_ITER_ERROR);
HDstrcpy(new_name, udata->base_grp_name);
if (add_slash)
new_name[base_len] = '/';
HDstrcpy(new_name + base_len + add_slash, path);
full_name = new_name;
} /* end if */
else
full_name = path;
/* Perform the correct action for different types of links */
if(linfo->type == H5L_TYPE_HARD) {
H5O_info_t oinfo;
/* Get information about the object */
if(H5Oget_info_by_name(loc_id, path, &oinfo, H5P_DEFAULT) < 0) {
if(new_name)
HDfree(new_name);
return(H5_ITER_ERROR);
}
/* If the object has multiple links, add it to the list of addresses
* already visited, if it isn't there already
*/
if(oinfo.rc > 1)
if(NULL == (already_visited = trav_addr_visited(udata->seen, oinfo.addr)))
trav_addr_add(udata->seen, oinfo.addr, full_name);
/* Make 'visit object' callback */
if(udata->visitor->visit_obj)
if((*udata->visitor->visit_obj)(full_name, &oinfo, already_visited, udata->visitor->udata) < 0) {
if(new_name)
HDfree(new_name);
return(H5_ITER_ERROR);
}
} /* end if */
else {
/* Make 'visit link' callback */
if(udata->visitor->visit_lnk)
if((*udata->visitor->visit_lnk)(full_name, linfo, udata->visitor->udata) < 0) {
if(new_name)
HDfree(new_name);
return(H5_ITER_ERROR);
}
} /* end else */
if(new_name)
HDfree(new_name);
return(H5_ITER_CONT);
} /* end traverse_cb() */
/*-------------------------------------------------------------------------
* Function: traverse
*
* Purpose: Iterate over all the objects/links in a file. Conforms to the
* "visitor" pattern.
*
* Return: 0 on success, -1 on failure
*
* Programmer: Quincey Koziol, koziol@hdfgroup.org
*
* Date: September 1, 2007
*
*-------------------------------------------------------------------------
*/
static int
traverse(hid_t file_id, const char *grp_name, hbool_t visit_start,
hbool_t recurse, const trav_visitor_t *visitor)
{
H5O_info_t oinfo; /* Object info for starting group */
/* Get info for starting object */
if(H5Oget_info_by_name(file_id, grp_name, &oinfo, H5P_DEFAULT) < 0)
return -1;
/* Visit the starting object */
if(visit_start && visitor->visit_obj)
(*visitor->visit_obj)(grp_name, &oinfo, NULL, visitor->udata);
/* Go visiting, if the object is a group */
if(oinfo.type == H5O_TYPE_GROUP) {
trav_addr_t seen; /* List of addresses seen */
trav_ud_traverse_t udata; /* User data for iteration callback */
/* Init addresses seen */
seen.nused = seen.nalloc = 0;
seen.objs = NULL;
/* Check for multiple links to top group */
if(oinfo.rc > 1)
trav_addr_add(&seen, oinfo.addr, grp_name);
/* Set up user data structure */
udata.seen = &seen;
udata.visitor = visitor;
udata.is_absolute = (*grp_name == '/');
udata.base_grp_name = grp_name;
/* Check for iteration of links vs. visiting all links recursively */
if(recurse) {
/* Visit all links in group, recursively */
if(H5Lvisit_by_name(file_id, grp_name, H5_INDEX_NAME, H5_ITER_INC, traverse_cb, &udata, H5P_DEFAULT) < 0)
return -1;
} /* end if */
else {
/* Iterate over links in group */
if(H5Literate_by_name(file_id, grp_name, H5_INDEX_NAME, H5_ITER_INC, NULL, traverse_cb, &udata, H5P_DEFAULT) < 0)
return -1;
} /* end else */
/* Free visited addresses table */
if(seen.objs) {
size_t u; /* Local index variable */
/* Free paths to objects */
for(u = 0; u < seen.nused; u++)
HDfree(seen.objs[u].path);
HDfree(seen.objs);
} /* end if */
} /* end if */
return 0;
}
/*-------------------------------------------------------------------------
* Function: trav_info_add
*
* Purpose: Add a link path & type to info struct
*
* Return: void
*
* Programmer: Quincey Koziol, koziol@hdfgroup.org
*
* Date: September 1, 2007
*
*-------------------------------------------------------------------------
*/
static void
trav_info_add(trav_info_t *info, const char *path, h5trav_type_t obj_type)
{
size_t idx; /* Index of address to use */
/* Allocate space if necessary */
if(info->nused == info->nalloc) {
info->nalloc = MAX(1, info->nalloc * 2);;
info->paths = (trav_path_t *)HDrealloc(info->paths, info->nalloc * sizeof(trav_path_t));
} /* end if */
/* Append it */
idx = info->nused++;
info->paths[idx].path = HDstrdup(path);
info->paths[idx].type = obj_type;
} /* end trav_info_add() */
/*-------------------------------------------------------------------------
* Function: trav_info_visit_obj
*
* Purpose: Callback for visiting object, with 'info' structure
*
* Return: 0 on success, -1 on failure
*
* Programmer: Quincey Koziol, koziol@hdfgroup.org
*
* Date: September 1, 2007
*
*-------------------------------------------------------------------------
*/
static int
trav_info_visit_obj(const char *path, const H5O_info_t *oinfo,
const char UNUSED *already_visited, void *udata)
{
/* Add the object to the 'info' struct */
/* (object types map directly to "traversal" types) */
trav_info_add((trav_info_t *)udata, path, (h5trav_type_t)oinfo->type);
return(0);
} /* end trav_info_visit_obj() */
/*-------------------------------------------------------------------------
* Function: trav_info_visit_lnk
*
* Purpose: Callback for visiting link, with 'info' structure
*
* Return: 0 on success, -1 on failure
*
* Programmer: Quincey Koziol, koziol@hdfgroup.org
*
* Date: September 1, 2007
*
*-------------------------------------------------------------------------
*/
static int
trav_info_visit_lnk(const char *path, const H5L_info_t *linfo, void *udata)
{
/* Add the link to the 'info' struct */
trav_info_add((trav_info_t *)udata, path, ((linfo->type == H5L_TYPE_SOFT) ? H5TRAV_TYPE_LINK : H5TRAV_TYPE_UDLINK));
return(0);
} /* end trav_info_visit_lnk() */
/*-------------------------------------------------------------------------
* Function: h5trav_getinfo
*
* Purpose: get an array of "trav_info_t" , containing the name and type of
* objects in the file
*
* Return: number of object names in file
*
* Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu
*
* Date: November 6, 2002
*
*-------------------------------------------------------------------------
*/
int
h5trav_getinfo(hid_t file_id, trav_info_t *info)
{
trav_visitor_t info_visitor; /* Visitor structure for trav_info_t's */
/* Init visitor structure */
info_visitor.visit_obj = trav_info_visit_obj;
info_visitor.visit_lnk = trav_info_visit_lnk;
info_visitor.udata = info;
/* Traverse all objects in the file, visiting each object & link */
if(traverse(file_id, "/", TRUE, TRUE, &info_visitor) < 0)
return -1;
return 0;
}
/*-------------------------------------------------------------------------
* Function: h5trav_getindex
*
* Purpose: get index of OBJ in list
*
* Return: index, -1 if not found
*
* Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu
*
* Date: May 9, 2003
*
*-------------------------------------------------------------------------
*/
ssize_t
h5trav_getindex(const trav_info_t *info, const char *obj)
{
size_t u; /* Local index variable */
/* Loop over all paths in 'info' struct, looking for object */
for(u = 0; u < info->nused; u++) {
/* Check for object name having full path (with leading '/') */
if(HDstrcmp(obj, info->paths[u].path) == 0)
return((ssize_t)u);
/* Check for object name without leading '/' */
if(HDstrcmp(obj, (info->paths[u].path + 1)) == 0)
return((ssize_t)u);
} /* end for */
return((ssize_t)-1);
} /* end h5trav_getindex() */
/*-------------------------------------------------------------------------
* Function: trav_info_init
*
* Purpose: Initialize the info
*
* Return: void
*
* Programmer: Quincey Koziol, koziol@hdfgroup.org
*
* Date: September 6, 2007
*
*-------------------------------------------------------------------------
*/
void
trav_info_init(trav_info_t **_info)
{
trav_info_t *info = (trav_info_t *)HDmalloc(sizeof(trav_info_t));
/* Init info structure */
info->nused = info->nalloc = 0;
info->paths = NULL;
*_info = info;
} /* end trav_info_init() */
/*-------------------------------------------------------------------------
* Function: trav_info_free
*
* Purpose: free info memory
*
*-------------------------------------------------------------------------
*/
void
trav_info_free(trav_info_t *info)
{
size_t u; /* Local index variable */
if(info) {
/* Free path names */
for(u = 0; u < info->nused; u++)
HDfree(info->paths[u].path);
HDfree(info->paths);
HDfree(info);
} /* end if */
} /* end trav_info_free() */
/*-------------------------------------------------------------------------
* "h5trav table" public functions. used in h5repack
*-------------------------------------------------------------------------
*/
/*-------------------------------------------------------------------------
* Function: trav_table_visit_obj
*
* Purpose: Callback for visiting object, with 'table' sructure
*
* Return: 0 on success, -1 on failure
*
* Programmer: Quincey Koziol, koziol@hdfgroup.org
*
* Date: September 1, 2007
*
*-------------------------------------------------------------------------
*/
static int
trav_table_visit_obj(const char *path, const H5O_info_t *oinfo,
const char *already_visited, void *udata)
{
trav_table_t *table = (trav_table_t *)udata;
/* Check if we've already seen this object */
if(NULL == already_visited)
/* add object to table */
trav_table_add(table, path, oinfo);
else
/* Add alias for object to table */
trav_table_addlink(table, oinfo->addr, path);
return(0);
} /* end trav_table_visit_obj() */
/*-------------------------------------------------------------------------
* Function: trav_table_visit_lnk
*
* Purpose: Callback for visiting link, with 'table' sructure
*
* Return: 0 on success, -1 on failure
*
* Programmer: Quincey Koziol, koziol@hdfgroup.org
*
* Date: September 1, 2007
*
*-------------------------------------------------------------------------
*/
static int
trav_table_visit_lnk(const char *path, const H5L_info_t UNUSED *linfo, void *udata)
{
/* Add the link to the 'table' struct */
trav_table_add((trav_table_t *)udata, path, NULL);
return(0);
} /* end trav_table_visit_lnk() */
/*-------------------------------------------------------------------------
* Function: h5trav_gettable
*
* Purpose: get the trav_table_t struct
*
* Return: 0, -1 on error
*
* Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu
*
* Date: December 17, 2003
*
*-------------------------------------------------------------------------
*/
int
h5trav_gettable(hid_t fid, trav_table_t *table)
{
trav_visitor_t table_visitor; /* Visitor structure for trav_table_t's */
/* Init visitor structure */
table_visitor.visit_obj = trav_table_visit_obj;
table_visitor.visit_lnk = trav_table_visit_lnk;
table_visitor.udata = table;
/* Traverse all objects in the file, visiting each object & link */
if(traverse(fid, "/", TRUE, TRUE, &table_visitor) < 0)
return -1;
return 0;
}
/*-------------------------------------------------------------------------
* Function: h5trav_getindext
*
* Purpose: get index of NAME in list
*
* Return: index, -1 if not found
*
* Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu
*
* Date: December 18, 2003
*
*-------------------------------------------------------------------------
*/
int
h5trav_getindext(const char *name, const trav_table_t *table)
{
unsigned int i;
for(i = 0; i < table->nobjs; i++) {
/* Check for object name having full path (with leading '/') */
if(HDstrcmp(name, table->objs[i].name) == 0)
return(i);
/* Check for object name without leading '/' */
if(HDstrcmp(name, table->objs[i].name + 1) == 0)
return(i);
/* search also in the list of links */
if(table->objs[i].nlinks) {
unsigned int j;
for ( j=0; j<table->objs[i].nlinks; j++) {
/* Check for object name having full path (with leading '/') */
if(HDstrcmp(name, table->objs[i].links[j].new_name) == 0)
return(i);
/* Check for object name without leading '/' */
if(HDstrcmp(name, table->objs[i].links[j].new_name + 1) == 0)
return(i);
} /* end for */
} /* end if */
} /* end for */
return -1;
}
/*-------------------------------------------------------------------------
* Function: trav_table_add
*
* Purpose: Add OBJNO, NAME and TYPE of object to table
*
* Return: void
*
* Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu
*
* Date: November 4, 2002
*
*-------------------------------------------------------------------------
*/
static void
trav_table_add(trav_table_t *table,
const char *path,
const H5O_info_t *oinfo)
{
size_t new;
if(table->nobjs == table->size) {
table->size = MAX(1, table->size * 2);
table->objs = (trav_obj_t*)HDrealloc(table->objs, table->size * sizeof(trav_obj_t));
} /* end if */
new = table->nobjs++;
table->objs[new].objno = oinfo ? oinfo->addr : HADDR_UNDEF;
table->objs[new].flags[0] = table->objs[new].flags[1] = 0;
table->objs[new].name = (char *)HDstrdup(path);
table->objs[new].type = oinfo ? (h5trav_type_t)oinfo->type : H5TRAV_TYPE_LINK;
table->objs[new].nlinks = 0;
table->objs[new].sizelinks = 0;
table->objs[new].links = NULL;
}
/*-------------------------------------------------------------------------
* Function: trav_table_addlink
*
* Purpose: Add a hardlink name to the object
*
* Return: void
*
* Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu
*
* Date: December 17, 2003
*
*-------------------------------------------------------------------------
*/
static void
trav_table_addlink(trav_table_t *table, haddr_t objno, const char *path)
{
size_t i; /* Local index variable */
for(i = 0; i < table->nobjs; i++) {
if(table->objs[i].objno == objno) {
size_t n;
/* already inserted? */
if(HDstrcmp(table->objs[i].name, path) == 0)
return;
/* allocate space if necessary */
if(table->objs[i].nlinks == (unsigned)table->objs[i].sizelinks) {
table->objs[i].sizelinks = MAX(1, table->objs[i].sizelinks * 2);
table->objs[i].links = (trav_link_t*)HDrealloc(table->objs[i].links, table->objs[i].sizelinks * sizeof(trav_link_t));
} /* end if */
/* insert it */
n = table->objs[i].nlinks++;
table->objs[i].links[n].new_name = (char *)HDstrdup(path);
return;
} /* end for */
} /* end for */
HDassert(0 && "object not in table?!?");
}
/*-------------------------------------------------------------------------
* Function: trav_table_addflags
*
* Purpose: Add FLAGS, NAME and TYPE of object to table
*
* Return: void
*
* Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu
*
* Date: November 4, 2002
*
*-------------------------------------------------------------------------
*/
void trav_table_addflags(unsigned *flags,
char *name,
h5trav_type_t type,
trav_table_t *table)
{
unsigned int new;
if(table->nobjs == table->size) {
table->size = MAX(1, table->size * 2);
table->objs = (trav_obj_t *)HDrealloc(table->objs, table->size * sizeof(trav_obj_t));
} /* end if */
new = table->nobjs++;
table->objs[new].objno = 0;
table->objs[new].flags[0] = flags[0];
table->objs[new].flags[1] = flags[1];
table->objs[new].name = (char *)HDstrdup(name);
table->objs[new].type = type;
table->objs[new].nlinks = 0;
table->objs[new].sizelinks = 0;
table->objs[new].links = NULL;
}
/*-------------------------------------------------------------------------
* Function: trav_table_init
*
* Purpose: Initialize the table
*
* Return: void
*
* Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu
*
* Date: November 4, 2002
*
*-------------------------------------------------------------------------
*/
void trav_table_init(trav_table_t **tbl)
{
trav_table_t* table = (trav_table_t*) HDmalloc(sizeof(trav_table_t));
table->size = 0;
table->nobjs = 0;
table->objs = NULL;
*tbl = table;
}
/*-------------------------------------------------------------------------
* Function: trav_table_free
*
* Purpose: free table memory
*
* Return: void
*
* Programmer: Pedro Vicente, pvn@ncsa.uiuc.edu
*
* Date: November 4, 2002
*
*-------------------------------------------------------------------------
*/
void trav_table_free( trav_table_t *table )
{
if(table->objs) {
unsigned int i;
for(i = 0; i < table->nobjs; i++) {
HDfree(table->objs[i].name );
if(table->objs[i].nlinks) {
unsigned int j;
for(j = 0; j < table->objs[i].nlinks; j++)
HDfree(table->objs[i].links[j].new_name);
HDfree(table->objs[i].links);
} /* end if */
} /* end for */
HDfree(table->objs);
} /* end if */
HDfree(table);
}
/*-------------------------------------------------------------------------
* Function: trav_print_visit_obj
*
* Purpose: Callback for visiting object, when printing info
*
* Return: 0 on success, -1 on failure
*
* Programmer: Quincey Koziol, koziol@hdfgroup.org
*
* Date: September 6, 2007
*
*-------------------------------------------------------------------------
*/
static int
trav_print_visit_obj(const char *path, const H5O_info_t *oinfo,
const char *already_visited, void UNUSED *udata)
{
/* Print the name of the object */
/* (no new-line, so that objects that we've encountered before can print
* the name of the original object)
*/
switch(oinfo->type) {
case H5O_TYPE_GROUP:
printf(" %-10s %s", "group", path);
break;
case H5O_TYPE_DATASET:
printf(" %-10s %s", "dataset", path);
break;
case H5O_TYPE_NAMED_DATATYPE:
printf(" %-10s %s", "datatype", path);
break;
default:
printf(" %-10s %s", "unknown object type", path);
break;
} /* end switch */
/* Check if we've already seen this object */
if(NULL == already_visited)
/* Finish printing line about object */
printf("\n");
else
/* Print the link's original name */
printf(" -> %s\n", already_visited);
return(0);
} /* end trav_print_visit_obj() */
/*-------------------------------------------------------------------------
* Function: trav_print_visit_lnk
*
* Purpose: Callback for visiting link, when printing info
*
* Return: 0 on success, -1 on failure
*
* Programmer: Quincey Koziol, koziol@hdfgroup.org
*
* Date: September 6, 2007
*
*-------------------------------------------------------------------------
*/
static int
trav_print_visit_lnk(const char *path, const H5L_info_t *linfo, void *udata)
{
trav_print_udata_t *print_udata = (trav_print_udata_t *)udata;
/* Print appropriate information for the type of link */
switch(linfo->type) {
case H5L_TYPE_SOFT:
if(linfo->u.val_size > 0) {
char *targbuf = HDmalloc(linfo->u.val_size + 1);
HDassert(targbuf);
H5Lget_val(print_udata->fid, path, targbuf, linfo->u.val_size + 1, H5P_DEFAULT);
printf(" %-10s %s -> %s\n", "link", path, targbuf);
free(targbuf);
} /* end if */
else
printf(" %-10s %s ->\n", "link", path);
break;
case H5L_TYPE_EXTERNAL:
if(linfo->u.val_size > 0) {
char *targbuf;
const char *filename;
const char *objname;
targbuf = HDmalloc(linfo->u.val_size + 1);
assert(targbuf);
H5Lget_val(print_udata->fid, path, targbuf, linfo->u.val_size + 1, H5P_DEFAULT);
H5Lunpack_elink_val(targbuf, linfo->u.val_size, NULL, &filename, &objname);
printf(" %-10s %s -> %s %s\n", "ext link", path, filename, objname);
free(targbuf);
} /* end if */
else
printf(" %-10s %s ->\n", "ext link", path);
break;
default:
printf(" %-10s %s -> ???\n", "unknown type of UD link", path);
break;
} /* end switch() */
return(0);
} /* end trav_print_visit_lnk() */
/*-------------------------------------------------------------------------
* Function: h5trav_print
*
* Purpose: Print information about the objects & links in the file
*
* Return: 0, -1 on error
*
* Programmer: Quincey Koziol, koziol@hdfgroup.org
*
* Date: September 6, 2007
*
*-------------------------------------------------------------------------
*/
int
h5trav_print(hid_t fid)
{
trav_print_udata_t print_udata; /* User data for traversal */
trav_visitor_t print_visitor; /* Visitor structure for printing objects */
/* Init user data for printing */
print_udata.fid = fid;
/* Init visitor structure */
print_visitor.visit_obj = trav_print_visit_obj;
print_visitor.visit_lnk = trav_print_visit_lnk;
print_visitor.udata = &print_udata;
/* Traverse all objects in the file, visiting each object & link */
if(traverse(fid, "/", TRUE, TRUE, &print_visitor) < 0)
return -1;
return 0;
}
/*-------------------------------------------------------------------------
* Function: h5trav_visit
*
* Purpose: Generic traversal routine for visiting objects and links
*
* Return: 0, -1 on error
*
* Programmer: Quincey Koziol, koziol@hdfgroup.org
*
* Date: November 6, 2007
*
*-------------------------------------------------------------------------
*/
int
h5trav_visit(hid_t fid, const char *grp_name, hbool_t visit_start,
hbool_t recurse, h5trav_obj_func_t visit_obj, h5trav_lnk_func_t visit_lnk,
void *udata)
{
trav_visitor_t visitor; /* Visitor structure for objects */
/* Init visitor structure */
visitor.visit_obj = visit_obj;
visitor.visit_lnk = visit_lnk;
visitor.udata = udata;
/* Traverse all objects in the file, visiting each object & link */
if(traverse(fid, grp_name, visit_start, recurse, &visitor) < 0)
return -1;
return 0;
}
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