project-config/tools/projectconfig_yamllib.py
Clint Adams 983626a715 Factor out yaml emitter/dumper functions from normalize_projects_yaml.py
This moves the functions used by normalize_projects_yaml.py out for the
purposes of being imported by multiple scripts.

Change-Id: I76a93124fdbe13bce34a0c5073fa66bc86806c0a
2015-09-28 19:19:13 -04:00

80 lines
2.9 KiB
Python
Executable File

# Copyright (c) 2015 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import yaml
from collections import OrderedDict
def project_representer(dumper, data):
return dumper.represent_mapping('tag:yaml.org,2002:map',
data.items())
def construct_yaml_map(self, node):
data = OrderedDict()
yield data
value = self.construct_mapping(node)
if isinstance(node, yaml.MappingNode):
self.flatten_mapping(node)
else:
raise yaml.constructor.ConstructorError(
None, None,
'expected a mapping node, but found %s' % node.id,
node.start_mark)
mapping = OrderedDict()
for key_node, value_node in node.value:
key = self.construct_object(key_node, deep=False)
try:
hash(key)
except TypeError as exc:
raise yaml.constructor.ConstructorError(
'while constructing a mapping', node.start_mark,
'found unacceptable key (%s)' % exc, key_node.start_mark)
value = self.construct_object(value_node, deep=False)
mapping[key] = value
data.update(mapping)
class IndentedEmitter(yaml.emitter.Emitter):
def expect_block_sequence(self):
self.increase_indent(flow=False, indentless=False)
self.state = self.expect_first_block_sequence_item
class IndentedDumper(IndentedEmitter, yaml.serializer.Serializer,
yaml.representer.Representer, yaml.resolver.Resolver):
def __init__(self, stream,
default_style=None, default_flow_style=None,
canonical=None, indent=None, width=None,
allow_unicode=None, line_break=None,
encoding=None, explicit_start=None, explicit_end=None,
version=None, tags=None):
IndentedEmitter.__init__(
self, stream, canonical=canonical,
indent=indent, width=width,
allow_unicode=allow_unicode,
line_break=line_break)
yaml.serializer.Serializer.__init__(
self, encoding=encoding,
explicit_start=explicit_start,
explicit_end=explicit_end,
version=version, tags=tags)
yaml.representer.Representer.__init__(
self, default_style=default_style,
default_flow_style=default_flow_style)
yaml.resolver.Resolver.__init__(self)