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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Options
"""
from collections import OrderedDict
import babelfish
import yaml # pylint:disable=wrong-import-order
from .rules.common.quantity import BitRate, FrameRate, Size
class OrderedDictYAMLLoader(yaml.SafeLoader):
"""
A YAML loader that loads mappings into ordered dictionaries.
From https://gist.github.com/enaeseth/844388
"""
def __init__(self, *args, **kwargs):
yaml.SafeLoader.__init__(self, *args, **kwargs)
self.add_constructor('tag:yaml.org,2002:map', type(self).construct_yaml_map)
self.add_constructor('tag:yaml.org,2002:omap', type(self).construct_yaml_map)
def construct_yaml_map(self, node):
data = OrderedDict()
yield data
value = self.construct_mapping(node)
data.update(value)
def construct_mapping(self, node, deep=False):
if isinstance(node, yaml.MappingNode):
self.flatten_mapping(node)
else: # pragma: no cover
raise yaml.constructor.ConstructorError(None, None,
f'expected a mapping node, but found {node.id}', node.start_mark)
mapping = OrderedDict()
for key_node, value_node in node.value:
key = self.construct_object(key_node, deep=deep)
try:
hash(key)
except TypeError as exc: # pragma: no cover
raise yaml.constructor.ConstructorError('while constructing a mapping',
node.start_mark, f'found unacceptable key ({exc})'
, key_node.start_mark)
value = self.construct_object(value_node, deep=deep)
mapping[key] = value
return mapping
class CustomDumper(yaml.SafeDumper):
"""
Custom YAML Dumper.
"""
pass # pylint:disable=unnecessary-pass
def default_representer(dumper, data):
"""Default representer"""
return dumper.represent_str(str(data))
CustomDumper.add_representer(babelfish.Language, default_representer)
CustomDumper.add_representer(babelfish.Country, default_representer)
CustomDumper.add_representer(BitRate, default_representer)
CustomDumper.add_representer(FrameRate, default_representer)
CustomDumper.add_representer(Size, default_representer)
def ordered_dict_representer(dumper, data):
"""OrderedDict representer"""
return dumper.represent_mapping('tag:yaml.org,2002:map', data.items())
CustomDumper.add_representer(OrderedDict, ordered_dict_representer)
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