meta, refactoring

kvmd/application.py

@@ -1,15 +1,10 @@
-import os
 import argparse
 import logging
 import logging.config
 
 from typing import Dict
-from typing import IO
-from typing import Any
 
-import yaml
-import yaml.loader
-import yaml.nodes
+from .yaml import load_yaml_file
 
 
 # =====
@@ -18,32 +13,9 @@ def init() -> Dict:
     parser.add_argument("-c", "--config", required=True, metavar="<path>")
     options = parser.parse_args()
 
-    config: Dict = _load_yaml_file(options.config)
+    config: Dict = load_yaml_file(options.config)
 
     logging.captureWarnings(True)
     logging.config.dictConfig(config["logging"])
 
     return config
-
-
-# =====
-def _load_yaml_file(path: str) -> Any:
-    with open(path) as yaml_file:
-        try:
-            return yaml.load(yaml_file, _YamlLoader)
-        except Exception:
-            # Reraise internal exception as standard ValueError and show the incorrect file
-            raise ValueError("Incorrect YAML syntax in file '{}'".format(path))
-
-
-class _YamlLoader(yaml.loader.Loader):  # pylint: disable=too-many-ancestors
-    def __init__(self, yaml_file: IO) -> None:
-        yaml.loader.Loader.__init__(self, yaml_file)
-        self.__root = os.path.dirname(yaml_file.name)
-
-    def include(self, node: yaml.nodes.Node) -> str:
-        path = os.path.join(self.__root, self.construct_scalar(node))  # pylint: disable=no-member
-        return _load_yaml_file(path)
-
-
-_YamlLoader.add_constructor("!include", _YamlLoader.include)  # pylint: disable=no-member