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100 lines
2.8 KiB
100 lines
2.8 KiB
import copy
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import collections
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import datetime
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from . import bibstruct
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#DEFAULT_META = collections.OrderedDict([('docfile', None), ('tags', set()), ('added', )])
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DEFAULT_META = {'docfile': None, 'tags': set(), 'added': None}
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class Paper(object):
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""" Paper class.
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The object is not responsible of any disk I/O.
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self.bibdata is a dictionary of bibligraphic fields
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self.metadata is a dictionary
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The paper class provides methods to access the fields for its metadata
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in a pythonic manner.
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"""
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def __init__(self, bibdata, citekey=None, metadata=None):
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self.citekey = citekey
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self.metadata = metadata
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self.bibdata = bibdata
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_, self.bibentry = bibstruct.get_entry(self.bibdata)
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if 'id' in self.bibentry:
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self.bibentry.pop('id')
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if self.metadata is None:
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self.metadata = copy.deepcopy(DEFAULT_META)
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if self.citekey is None:
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self.citekey = bibstruct.extract_citekey(self.bibdata)
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bibstruct.check_citekey(self.citekey)
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self.metadata['tags'] = set(self.metadata.get('tags', []))
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def __eq__(self, other):
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return (isinstance(self, Paper) and type(other) is type(self)
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and self.bibdata == other.bibdata
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and self.metadata == other.metadata
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and self.citekey == other.citekey)
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def __repr__(self):
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return 'Paper(%s, %s, %s)' % (
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self.citekey, self.bibentry, self.metadata)
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def __deepcopy__(self, memo):
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return Paper(citekey =self.citekey,
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metadata=copy.deepcopy(self.metadata, memo),
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bibdata=copy.deepcopy(self.bibdata, memo))
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def __copy__(self):
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return Paper(citekey =self.citekey,
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metadata=self.metadata,
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bibdata=self.bibdata)
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def deepcopy(self):
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return self.__deepcopy__({})
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# docpath
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@property
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def docpath(self):
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return self.metadata.get('docfile', '')
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@docpath.setter
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def docpath(self, path):
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"""Does not verify if the path exists."""
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self.metadata['docfile'] = path
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# tags
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@property
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def tags(self):
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return self.metadata['tags']
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@tags.setter
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def tags(self, value):
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if not hasattr(value, '__iter__'):
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raise ValueError('tags must be iterables')
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self.metadata['tags'] = set(value)
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def add_tag(self, tag):
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self.tags.add(tag)
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def remove_tag(self, tag):
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"""Remove a tag from a paper if present."""
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self.tags.discard(tag)
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# added date
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@property
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def added(self):
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datetime.datetime.strptime(self.metadata['added'], '%Y-%m-%d %H:%M:%S')
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@added.setter
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def added(self, value):
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self.metadata['added'] = value.strftime('%Y-%m-%d %H:%M:%S')
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