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Fix autoupdate spamming with defaults.

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This commit is contained in:
Anthony Sottile 2014-04-03 22:11:53 -07:00
parent 817ec510c7
commit 8b5c3b8745
4 changed files with 68 additions and 12 deletions
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47
pre_commit/jsonschema_extensions.py
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@ -5,30 +5,55 @@ import jsonschema.validators
# From https://github.com/Julian/jsonschema/blob/master/docs/faq.rst
def extend_with_default(validator_class):
validate_properties = validator_class.VALIDATORS["properties"]
def extend_validator_cls(validator_cls, modify):
validate_properties = validator_cls.VALIDATORS['properties']
def set_defaults(validator, properties, instance, schema):
def new_properties(validator, properties, instance, schema):
for error in validate_properties(
validator, properties, instance, schema,
):
yield error
for property, subschema in properties.iteritems():
if "default" in subschema:
instance.setdefault(
property, copy.deepcopy(subschema["default"]),
)
modify(properties, instance)
return jsonschema.validators.extend(
validator_class, {"properties" : set_defaults},
validator_cls, {'properties': new_properties},
)
DefaultingValidator = extend_with_default(jsonschema.Draft4Validator)
def default_values(properties, instance):
for property, subschema in properties.iteritems():
if 'default' in subschema:
instance.setdefault(
property, copy.deepcopy(subschema['default']),
)
def remove_default_values(properties, instance):
for property, subschema in properties.iteritems():
if (
'default' in subschema and
instance.get(property) == subschema['default']
):
del instance[property]
_AddDefaultsValidator = extend_validator_cls(
jsonschema.Draft4Validator, default_values,
)
_RemoveDefaultsValidator = extend_validator_cls(
jsonschema.Draft4Validator, remove_default_values,
)
def apply_defaults(obj, schema):
obj = copy.deepcopy(obj)
DefaultingValidator(schema).validate(obj)
_AddDefaultsValidator(schema).validate(obj)
return obj
def remove_defaults(obj, schema):
obj = copy.deepcopy(obj)
_RemoveDefaultsValidator(schema).validate(obj)
return obj