[svn-r18223] Description:

    Bring r18205 & r18222 from trunk to 1.8 branch:

    Add new H5Oexists_by_name() routine.

Tested on:
    Mac OS X/32 10.6.2 (amazon) w/debug & production
    (daily tested on trunk already)

1 files changed, 41 insertions, 0 deletions

diff --git a/src/H5O.c b/src/H5O.c
index a443724..52db34f 100644
--- a/src/H5O.c
+++ b/src/H5O.c
@@ -536,6 +536,47 @@ done:
 
 
 /*-------------------------------------------------------------------------
+ * Function:	H5Oexists_by_name
+ *
+ * Purpose:	Determine if a linked-to object exists
+ *
+ * Return:	Success:	TRUE/FALSE
+ * 		Failure:	Negative
+ *
+ * Programmer:	Quincey Koziol
+ *		February  2 2010
+ *
+ *-------------------------------------------------------------------------
+ */
+htri_t
+H5Oexists_by_name(hid_t loc_id, const char *name, hid_t lapl_id)
+{
+    H5G_loc_t	loc;                    /* Location info */
+    hid_t       ret_value = FAIL;       /* Return value */
+
+    FUNC_ENTER_API(H5Oexists_by_name, FAIL)
+
+    /* Check args */
+    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")
+    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")
+
+    /* Check if the object exists */
+    if((ret_value = H5G_loc_exists(&loc, name, lapl_id, H5AC_dxpl_id)) < 0)
+        HGOTO_ERROR(H5E_OHDR, H5E_CANTGET, FAIL, "unable to determine if '%s' exists", name)
+
+done:
+    FUNC_LEAVE_API(ret_value)
+} /* end H5Oexists_by_name() */
+
+
+/*-------------------------------------------------------------------------
  * Function:	H5Oget_info
  *
  * Purpose:	Retrieve information about an object.