Files
pre-commit/pre_commit/yaml_extensions.py
2014-03-23 22:57:19 -07:00

29 lines
834 B
Python

import yaml
from pre_commit.ordereddict import OrderedDict
# Adapted from http://stackoverflow.com/a/21912744/812183
def ordered_load(s):
class OrderedLoader(yaml.loader.Loader): pass
def constructor(loader, node):
return OrderedDict(loader.construct_pairs(node))
OrderedLoader.add_constructor(
yaml.resolver.BaseResolver.DEFAULT_MAPPING_TAG,
constructor,
)
return yaml.load(s, Loader=OrderedLoader)
def ordered_dump(s, **kwargs):
class OrderedDumper(yaml.dumper.SafeDumper): pass
def dict_representer(dumper, data):
return dumper.represent_mapping(
yaml.resolver.BaseResolver.DEFAULT_MAPPING_TAG,
data.items(),
)
OrderedDumper.add_representer(OrderedDict, dict_representer)
return yaml.dump(s, Dumper=OrderedDumper, **kwargs)