diff options
Diffstat (limited to 'src/H5G.c')
| -rw-r--r-- | src/H5G.c | 73 |
1 files changed, 61 insertions, 12 deletions
@@ -1348,6 +1348,7 @@ H5G_isa(H5G_entry_t *ent) * Monday, January 5, 1998 * * Modifications: + * Modified to call H5G_open_oid - QAK - 3/17/99 * *------------------------------------------------------------------------- */ @@ -1356,7 +1357,7 @@ H5G_open(H5G_entry_t *loc, const char *name) { H5G_t *grp = NULL; H5G_t *ret_value = NULL; - H5O_stab_t mesg; + H5G_entry_t ent; /*dataset symbol table entry */ FUNC_ENTER(H5G_open, NULL); @@ -1365,29 +1366,77 @@ H5G_open(H5G_entry_t *loc, const char *name) assert(name && *name); /* Open the object, making sure it's a group */ - if (NULL==(grp = H5MM_calloc(sizeof(H5G_t)))) { - HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, - "memory allocation failed"); + if (H5G_find(loc, name, NULL, &ent/*out*/) < 0) { + HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, NULL, "group not found"); + } + /* Open the group object */ + if ((grp=H5G_open_oid(&ent)) ==NULL) { + HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, NULL, "not found"); } - if (H5G_find(loc, name, NULL, &(grp->ent)/*out*/) < 0) { - HGOTO_ERROR(H5E_SYM, H5E_NOTFOUND, NULL, "group not found"); + ret_value = grp; + +done: + if (!ret_value && grp) { + H5MM_xfree(grp); } + FUNC_LEAVE(ret_value); +} + + +/*------------------------------------------------------------------------- + * Function: H5G_open_oid + * + * Purpose: Opens an existing group. The group should eventually be + * closed by calling H5G_close(). + * + * Return: Success: Ptr to a new group. + * + * Failure: NULL + * + * Programmer: Quincey Koziol + * Wednesday, March 17, 1999 + * + * Modifications: + * + *------------------------------------------------------------------------- + */ +H5G_t * +H5G_open_oid(H5G_entry_t *ent) +{ + H5G_t *grp = NULL; + H5G_t *ret_value = NULL; + H5O_stab_t mesg; + + FUNC_ENTER(H5G_open_oid, NULL); + + /* Check args */ + assert(ent); + + /* Open the object, making sure it's a group */ + if (NULL==(grp = H5MM_calloc(sizeof(H5G_t)))) { + HGOTO_ERROR (H5E_RESOURCE, H5E_NOSPACE, NULL, "memory allocation failed"); + } + + /* Copy over the symbol table information if it's provided */ + HDmemcpy(&(grp->ent),ent,sizeof(H5G_entry_t)); + + /* Grab the object header */ if (H5O_open(&(grp->ent)) < 0) { - HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, NULL, "unable to open group"); + HGOTO_ERROR(H5E_SYM, H5E_CANTOPENOBJ, NULL, "unable to open group"); } if (NULL==H5O_read (&(grp->ent), H5O_STAB, 0, &mesg)) { - H5O_close(&(grp->ent)); - HGOTO_ERROR (H5E_SYM, H5E_CANTOPENOBJ, NULL, "not a group"); + H5O_close(&(grp->ent)); + HGOTO_ERROR (H5E_SYM, H5E_CANTOPENOBJ, NULL, "not a group"); } grp->nref = 1; ret_value = grp; - done: +done: if (!ret_value && grp) { - H5MM_xfree(grp); + H5MM_xfree(grp); } FUNC_LEAVE(ret_value); -} +} /* end H5G_open_oid() */ /*------------------------------------------------------------------------- |