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101 lines
3.5 KiB
101 lines
3.5 KiB
# Copyright (c) 2006-2021 Andrey Golovizin
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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# IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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# CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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# TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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from __future__ import absolute_import, unicode_literals
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from collections import OrderedDict
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import six
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import yaml
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from pybtex.database import Entry, Person
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from pybtex.database.input import BaseParser
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class OrderedDictSafeLoader(yaml.SafeLoader):
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"""
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SafeLoader that loads mappings as OrderedDicts.
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"""
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def construct_yaml_map(self, node):
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data = OrderedDict()
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yield data
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value = self.construct_mapping(node)
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data.update(value)
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def construct_mapping(self, node, deep=False):
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if isinstance(node, yaml.MappingNode):
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self.flatten_mapping(node)
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else:
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raise yaml.constructor.ConstructorError(None, None,
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'expected a mapping node, but found %s' % node.id, node.start_mark)
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mapping = OrderedDict()
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for key_node, value_node in node.value:
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key = self.construct_object(key_node, deep=deep)
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try:
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hash(key)
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except TypeError as exc:
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raise yaml.constructor.ConstructorError('while constructing a mapping',
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node.start_mark, 'found unacceptable key (%s)' % exc, key_node.start_mark)
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value = self.construct_object(value_node, deep=deep)
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mapping[key] = value
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return mapping
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OrderedDictSafeLoader.add_constructor(
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u'tag:yaml.org,2002:map', OrderedDictSafeLoader.construct_yaml_map
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)
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OrderedDictSafeLoader.add_constructor(
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u'tag:yaml.org,2002:omap', OrderedDictSafeLoader.construct_yaml_map
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)
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class Parser(BaseParser):
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default_suffix = '.yaml'
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unicode_io = False
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def parse_stream(self, stream):
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t = yaml.load(stream, Loader=OrderedDictSafeLoader)
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entries = (
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(key, self.process_entry(entry))
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for (key, entry) in t['entries'].items()
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)
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try:
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self.data.add_to_preamble(t['preamble'])
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except KeyError:
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pass
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self.data.add_entries(entries)
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return self.data
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def process_entry(self, entry):
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bib_entry = Entry(entry['type'])
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for (key, value) in entry.items():
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key_lower = key.lower()
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if key_lower in Person.valid_roles:
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for names in value:
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bib_entry.add_person(Person(**names), key)
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elif key_lower == 'type':
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pass
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else:
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bib_entry.fields[key] = six.text_type(value)
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return bib_entry
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