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authorJames Laird <jlaird@hdfgroup.org>2006-08-03 22:35:58 (GMT)
committerJames Laird <jlaird@hdfgroup.org>2006-08-03 22:35:58 (GMT)
commitb5724779d0b10f610de10bf2ab88d62202160272 (patch)
treed89656e3ceb6504d3338ddfb7ae8aec76db66159 /src
parentb1e0516dd0b0795ec04dbe86f909412e94cbaa2a (diff)
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[svn-r12533] Standardized the way path prefixes are passed to external links using a
LAPL. Now there are H5Pget and H5Pset functions for "elink_prefixes".
Diffstat (limited to 'src')
-rw-r--r--src/H5Lexternal.c12
-rw-r--r--src/H5Lprivate.h4
-rw-r--r--src/H5P.c5
-rw-r--r--src/H5Plapl.c82
4 files changed, 94 insertions, 9 deletions
diff --git a/src/H5Lexternal.c b/src/H5Lexternal.c
index 5609658..312028a 100644
--- a/src/H5Lexternal.c
+++ b/src/H5Lexternal.c
@@ -50,6 +50,7 @@ static hid_t H5L_extern_traverse(const char * link_name, hid_t cur_group, void *
hid_t fid;
char *file_name;
char *obj_name;
+ char *prefix;
size_t fname_len;
htri_t result;
hbool_t fname_alloc = FALSE;
@@ -60,25 +61,22 @@ static hid_t H5L_extern_traverse(const char * link_name, hid_t cur_group, void *
obj_name = ((char *) udata) + fname_len + 1;
/* See if the external link prefix property is set */
- if((result = H5Pexist(lapl_id, H5L_ELINK_PREFIX_PROP)) < 0)
+ if(H5Pget_elink_prefix(lapl_id, &prefix) < 0)
goto error;
/* If so, prepend it to the filename */
- if(result > 0)
+ if(prefix != NULL)
{
size_t buf_size;
- if(H5Pget_size(lapl_id, H5L_ELINK_PREFIX_PROP, &buf_size) < 0)
- goto error;
+ buf_size = HDstrlen(prefix);
/* Allocate a buffer to hold the filename plus prefix */
file_name = malloc(buf_size + fname_len + 1);
fname_alloc = TRUE;
- if(H5Pget(lapl_id, H5L_ELINK_PREFIX_PROP, file_name) < 0)
- goto error;
-
/* Add the external link's filename to the prefix supplied */
+ strcpy(file_name, prefix);
strcat(file_name, udata);
}
diff --git a/src/H5Lprivate.h b/src/H5Lprivate.h
index d5cc7d8..bfe3949 100644
--- a/src/H5Lprivate.h
+++ b/src/H5Lprivate.h
@@ -36,6 +36,10 @@
#define H5L_NLINKS_SIZE sizeof(size_t)
#define H5L_NLINKS_DEF 16 /*max symlinks to follow per lookup */
+#define H5L_ELINK_PREFIX_NAME "external link prefix"
+#define H5L_ELINK_PREFIX_SIZE sizeof(char *)
+#define H5L_ELINK_PREFIX_DEF NULL /*default is no prefix */
+
/* Functions that understand link messages */
/* forward reference for later use */
struct H5HL_t; /* defined in H5HLprivate.h */
diff --git a/src/H5P.c b/src/H5P.c
index 3aa66ce..144ce72 100644
--- a/src/H5P.c
+++ b/src/H5P.c
@@ -243,6 +243,7 @@ H5P_init_interface(void)
*/
H5P_genclass_t *lacc_class; /* Pointer to link access property list class created */
size_t nlinks = H5L_NLINKS_DEF;
+ char * elink_prefix = H5L_ELINK_PREFIX_DEF;
/* Group creation property class variables. In sequence, they are,
* - Creation property list class to modify
* - Default value for "group info"
@@ -344,6 +345,10 @@ H5P_init_interface(void)
if(H5P_register(lacc_class, H5L_NLINKS_NAME, H5L_NLINKS_SIZE,
&nlinks, NULL, NULL, NULL, NULL, NULL, NULL, NULL) < 0)
HGOTO_ERROR(H5E_PLIST, H5E_CANTINSERT, FAIL, "can't insert property into class")
+ /* Register property for external link prefix */
+ if(H5P_register(lacc_class, H5L_ELINK_PREFIX_NAME, H5L_ELINK_PREFIX_SIZE,
+ &elink_prefix, NULL, NULL, NULL, NULL, NULL, NULL, NULL) < 0)
+ HGOTO_ERROR(H5E_PLIST, H5E_CANTINSERT, FAIL, "can't insert property into class")
} /* end if */
/* Register the group creation and group access property classes */
diff --git a/src/H5Plapl.c b/src/H5Plapl.c
index cfe6b50..4a80cc2 100644
--- a/src/H5Plapl.c
+++ b/src/H5Plapl.c
@@ -75,8 +75,6 @@ done:
/*-------------------------------------------------------------------------
* Function: H5Pget_nlinks
*
- * Purpose: Get the number of soft or UD traversals allowed when using
- * this property list.
* Purpose: Gets the number of soft or user-defined links that can be
* traversed before a failure occurs.
*
@@ -115,3 +113,83 @@ done:
}
+/*-------------------------------------------------------------------------
+ * Function: H5Pset_elink_prefix
+ *
+ * Purpose: Set a prefix to be applied to the path of any external links
+ * traversed. The prefix is appended to the filename stored
+ * in the external link.
+ *
+ * The prefix is supplied by giving a pointer to a user-
+ * allocated buffer. This buffer should not be freed
+ * until this property list has been closed.
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer: James Laird
+ * Thursday, August 3, 2006
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5Pset_elink_prefix(hid_t plist_id, const char *prefix)
+{
+ H5P_genplist_t *plist; /* Property list pointer */
+ herr_t ret_value = SUCCEED; /* Return value */
+
+ FUNC_ENTER_API(H5Pset_elink_prefix, FAIL)
+ H5TRACE2("e","iz",plist_id,nlinks);
+
+ /* Get the plist structure */
+ if(NULL == (plist = H5P_object_verify(plist_id, H5P_LINK_ACCESS)))
+ HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID")
+
+ /* Set prefix */
+ if(H5P_set(plist, H5L_ELINK_PREFIX_NAME, &prefix) < 0)
+ HGOTO_ERROR(H5E_PLIST, H5E_CANTSET, FAIL, "can't set prefix info")
+
+done:
+ FUNC_LEAVE_API(ret_value)
+} /* end H5Pset_elink_prefix() */
+
+
+/*-------------------------------------------------------------------------
+ * Function: H5Pget_elink_prefix
+ *
+ * Purpose: Gets the prefix to be applied to any external link
+ * traversals made using this property list.
+ *
+ * If the pointer is not NULL, it points to a user-allocated
+ * buffer.
+ *
+ * Return: Non-negative on success/Negative on failure
+ *
+ * Programmer: James Laird
+ * Thursday, August 3, 2006
+ *
+ *-------------------------------------------------------------------------
+ */
+herr_t
+H5Pget_elink_prefix(hid_t plist_id, char **prefix)
+{
+ H5P_genplist_t *plist; /* Property list pointer */
+ herr_t ret_value = SUCCEED; /* Return value */
+
+ FUNC_ENTER_API(H5Pget_elink_prefix, FAIL)
+ H5TRACE2("e","i*z",plist_id,nlinks);
+
+ if(!prefix)
+ HGOTO_ERROR(H5E_ARGS, H5E_BADVALUE, FAIL, "invalid pointer passed in");
+
+ /* Get the plist structure */
+ if(NULL == (plist = H5P_object_verify(plist_id, H5P_LINK_ACCESS)))
+ HGOTO_ERROR(H5E_ATOM, H5E_BADATOM, FAIL, "can't find object for ID")
+
+ /* Get the current prefix */
+ if(H5P_get(plist, H5L_ELINK_PREFIX_NAME, prefix) < 0)
+ HGOTO_ERROR(H5E_PLIST, H5E_CANTGET, FAIL, "can't get external link prefix")
+
+done:
+ FUNC_LEAVE_API(ret_value)
+}
+