One-KVM/kvmd/yaml.py
2018-11-16 06:54:27 +03:00

32 lines
966 B
Python

import os
from typing import IO
from typing import Any
import yaml
import yaml.loader
import yaml.nodes
# =====
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