cli: T6740: add a converter from set commands to config

1 files changed, 27 insertions, 1 deletions

diff --git a/python/vyos/xml_ref/definition.py b/python/vyos/xml_ref/definition.py
index 5ff28daed..4e755ab72 100644
--- a/python/vyos/xml_ref/definition.py
+++ b/python/vyos/xml_ref/definition.py
@@ -13,7 +13,7 @@
 # You should have received a copy of the GNU Lesser General Public License
 # along with this library.  If not, see <http://www.gnu.org/licenses/>.
 
-from typing import Optional, Union, Any, TYPE_CHECKING
+from typing import Tuple, Optional, Union, Any, TYPE_CHECKING
 
 # https://peps.python.org/pep-0484/#forward-references
 # for type 'ConfigDict'
@@ -90,6 +90,32 @@ class Xml:
         res = self._get_ref_node_data(node, 'node_type')
         return res == 'tag'
 
+    def exists(self, path: list) -> bool:
+        try:
+            _ = self._get_ref_path(path)
+            return True
+        except ValueError:
+            return False
+
+    def split_path(self, path: list) -> Tuple[list, Optional[str]]:
+        """ Splits a list into config path and value components """
+
+        # First, check if the complete path is valid by itself
+        if self.exists(path):
+            if self.is_valueless(path) or not self.is_leaf(path):
+                # It's a complete path for a valueless node
+                # or a path to an empy non-leaf node
+                return (path, None)
+            else:
+                raise ValueError(f'Path "{path}" needs a value or children')
+        else:
+            # If the complete path doesn't exist, it's probably a path with a value
+            if self.exists(path[0:-1]):
+                return (path[0:-1], path[-1])
+            else:
+                # Or not a valid path at all
+                raise ValueError(f'Path "{path}" is incorrect')
+
     def is_tag(self, path: list) -> bool:
         ref_path = path.copy()
         d = self.ref