X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=sfa%2Futil%2Fnamespace.py;h=961b3b36d738173ee4f76684db51c0eb27a33d80;hb=267c154e1ee62d8c5ac903dda13da6a2c7dc16ad;hp=d036f064ddfdb3ad6ac6d9063410b5240ed8b5cf;hpb=11fdbb35325530daf834d5ba1222b2b7ea7f04a0;p=sfa.git

diff --git a/sfa/util/namespace.py b/sfa/util/namespace.py
index d036f064..961b3b36 100644
--- a/sfa/util/namespace.py
+++ b/sfa/util/namespace.py
@@ -1,32 +1,72 @@
-### $Id$
-### $URL$
-
+#
+#  WARNING - This file should be soon deprecated in favor of sfa.util.xrn
+#
+#
+#  WARNING - This file should be soon deprecated in favor of sfa.util.xrn
+#
+#
+#  WARNING - This file should be soon deprecated in favor of sfa.util.xrn
+#
+#
+#  WARNING - This file should be soon deprecated in favor of sfa.util.xrn
+#
+#
+#  WARNING - This file should be soon deprecated in favor of sfa.util.xrn
+#
+#
+#  WARNING - This file should be soon deprecated in favor of sfa.util.xrn
+#
+import re
 from sfa.util.faults import *
 URN_PREFIX = "urn:publicid:IDN"
 
+def __get_hierarchy_delim_indexes(hrn):
+    # find all non escaped '.'
+    hierarchy_delim = '([a-zA-Z0-9][\.])'
+    parts = re.findall(hierarchy_delim, hrn)
+    # list of indexes for every  hierarchy delimieter
+    indexes = []
+    for part in parts:
+        indexes.append(hrn.index(part) + 1)
+    return indexes 
+
 def get_leaf(hrn):
-    parts = hrn.split(".")
-    return ".".join(parts[-1:])
+    delim_indexes = __get_hierarchy_delim_indexes(hrn)
+    if not delim_indexes:
+        return hrn
+    
+    last_delim_index = delim_indexes[-1:][0] + 1
+    return hrn[last_delim_index:] 
 
 def get_authority(xrn):
     hrn, type = urn_to_hrn(xrn)
     if type and type == 'authority':
         return hrn
+  
+    delim_indexes = __get_hierarchy_delim_indexes(hrn)
+    if not delim_indexes:
+        return ''
+    last_delim_index = delim_indexes[-1:][0] 
+    return hrn[:last_delim_index] 
     
-    parts = hrn.split(".")
-    return ".".join(parts[:-1])
-
 def hrn_to_pl_slicename(hrn):
+    # remove any escaped no alpah numeric characters
+    #hrn = re.sub('\\\[^a-zA-Z0-9]', '', hrn)
+    hrn = re.sub(r'\\(.)', '', hrn)
     parts = hrn.split(".")
     return parts[-2] + "_" + parts[-1]
 
 # assuming hrn is the hrn of an authority, return the plc authority name
 def hrn_to_pl_authname(hrn):
+    # remove any escaped no alpah numeric characters
+    hrn = re.sub(r'\\(.)', '', hrn)
     parts = hrn.split(".")
     return parts[-1]
 
 # assuming hrn is the hrn of an authority, return the plc login_base
 def hrn_to_pl_login_base(hrn):
+    # remove any escaped no alpah numeric characters
+    hrn = re.sub(r'\\(.)', '', hrn)
     return hrn_to_pl_authname(hrn)
 
 def hostname_to_hrn(auth_hrn, login_base, hostname):
@@ -64,20 +104,22 @@ def urn_to_hrn(urn):
         return urn, None
 
     name = urn[len(URN_PREFIX):]
-    hrn_parts = name.split("+")
-    
-    type = hrn_parts.pop(2)
-
-    # convert hrn_parts (list) into hrn (str) by doing the following    
-    # remove blank elements
-    # replace ':' with '.'
-    # join list elements using '.'
-    hrn = '.'.join([part.replace(':', '.') for part in hrn_parts if part]) 
+    urn_parts = name.split("+")
+    type = urn_parts.pop(2)
     
+         
     # Remove the authority name (e.g. '.sa')
     if type == 'authority':
-        hrn = hrn[:hrn.rindex('.')]        
-   
+        urn_parts = urn_parts[:-1]
+
+    # convert hrn_parts (list) into hrn (str) by doing the following
+    # 1. remove blank elements
+    # 2. escape all non alpha numeric chars (excluding ':')
+    # 3. replace ':' with '.'  (':' is the urn hierarchy delimiter)
+    # 4. join list elements using '.' 
+    #hrn = '.'.join([part.replace('.', '\\.').replace(':', '.') for part in hrn_parts if part]) 
+    hrn = '.'.join([re.sub(r'([^a-zA-Z0-9\:])', r'\\\1', part).replace(':', '.') for part in urn_parts if part]) 
+    
     return str(hrn), str(type) 
     
     
@@ -89,20 +131,22 @@ def hrn_to_urn(hrn, type=None):
     if not hrn or hrn.startswith(URN_PREFIX):
         return hrn
 
-    authority = get_authority(hrn)
-    name = get_leaf(hrn)
-     
     if type == 'authority':
         authority = hrn
         name = 'sa'   
+    else:
+        authority = get_authority(hrn)
+        name = get_leaf(hrn)   
+  
+    # convert from hierarchy delimiter from '.' to ':'   
+    authority = re.sub(r'([a-zA-Z0-9])[\.]', r'\1:', authority) 
+    # unescape escaped characters
+    authority = re.sub(r'\\(.)', r'\1', authority)
     
-    if authority.startswith("plc"):
-        if type == None:
-            urn = "+".join(['',authority.replace('.',':'),name])
-        else:
-            urn = "+".join(['',authority.replace('.',':'),type,name])
-
+    if type == None:
+        urn = "+".join(['',authority,name])
     else:
         urn = "+".join(['',authority,type,name])
+
         
     return URN_PREFIX + urn