61 lines
2.0 KiB
Python
61 lines
2.0 KiB
Python
|
"""Custom dumper and representers."""
|
||
|
|
from collections import OrderedDict
|
||
|
|
import yaml
|
||
|
|
|
||
|
|
from .objects import NodeListClass
|
||
|
|
|
||
|
|
|
||
|
|
def dump(_dict: dict) -> str:
|
||
|
|
"""Dump YAML to a string and remove null."""
|
||
|
|
return yaml.safe_dump(
|
||
|
|
_dict, default_flow_style=False, allow_unicode=True) \
|
||
|
|
.replace(': null\n', ':\n')
|
||
|
|
|
||
|
|
|
||
|
|
def save_yaml(path: str, data: dict) -> None:
|
||
|
|
"""Save YAML to a file."""
|
||
|
|
# Dump before writing to not truncate the file if dumping fails
|
||
|
|
str_data = dump(data)
|
||
|
|
with open(path, 'w', encoding='utf-8') as outfile:
|
||
|
|
outfile.write(str_data)
|
||
|
|
|
||
|
|
|
||
|
|
# From: https://gist.github.com/miracle2k/3184458
|
||
|
|
# pylint: disable=redefined-outer-name
|
||
|
|
def represent_odict(dump, tag, mapping, # type: ignore
|
||
|
|
flow_style=None) -> yaml.MappingNode:
|
||
|
|
"""Like BaseRepresenter.represent_mapping but does not issue the sort()."""
|
||
|
|
value = [] # type: list
|
||
|
|
node = yaml.MappingNode(tag, value, flow_style=flow_style)
|
||
|
|
if dump.alias_key is not None:
|
||
|
|
dump.represented_objects[dump.alias_key] = node
|
||
|
|
best_style = True
|
||
|
|
if hasattr(mapping, 'items'):
|
||
|
|
mapping = mapping.items()
|
||
|
|
for item_key, item_value in mapping:
|
||
|
|
node_key = dump.represent_data(item_key)
|
||
|
|
node_value = dump.represent_data(item_value)
|
||
|
|
if not (isinstance(node_key, yaml.ScalarNode) and not node_key.style):
|
||
|
|
best_style = False
|
||
|
|
if not (isinstance(node_value, yaml.ScalarNode) and
|
||
|
|
not node_value.style):
|
||
|
|
best_style = False
|
||
|
|
value.append((node_key, node_value))
|
||
|
|
if flow_style is None:
|
||
|
|
if dump.default_flow_style is not None:
|
||
|
|
node.flow_style = dump.default_flow_style
|
||
|
|
else:
|
||
|
|
node.flow_style = best_style
|
||
|
|
return node
|
||
|
|
|
||
|
|
|
||
|
|
yaml.SafeDumper.add_representer(
|
||
|
|
OrderedDict,
|
||
|
|
lambda dumper, value:
|
||
|
|
represent_odict(dumper, 'tag:yaml.org,2002:map', value))
|
||
|
|
|
||
|
|
yaml.SafeDumper.add_representer(
|
||
|
|
NodeListClass,
|
||
|
|
lambda dumper, value:
|
||
|
|
dumper.represent_sequence('tag:yaml.org,2002:seq', value))
|