/usr/share/pyshared/zope/dublincore/zopedublincore.py is in python-zope.dublincore 3.8.2-0ubuntu1.
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#
# Copyright (c) 2002 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
"""Zope's Dublin Core Implementation
"""
__docformat__ = 'restructuredtext'
from datetime import datetime
from zope.interface import implements
from zope.datetime import parseDatetimetz
from zope.dublincore.interfaces import IZopeDublinCore
class SimpleProperty(object):
def __init__(self, name):
self.__name__ = name
class ScalarProperty(SimpleProperty):
def __get__(self, inst, klass):
if inst is None:
return self
data = inst._mapping.get(self.__name__, ())
if data:
return data[0]
else:
return u''
def __set__(self, inst, value):
if not isinstance(value, unicode):
raise TypeError("Element must be unicode")
dict = inst._mapping
__name__ = self.__name__
inst._changed()
dict[__name__] = (value, ) + dict.get(__name__, ())[1:]
def _scalar_get(inst, name):
data = inst._mapping.get(name, ())
if data:
return data[0]
else:
return u''
class DateProperty(ScalarProperty):
def __get__(self, inst, klass):
if inst is None:
return self
data = inst._mapping.get(self.__name__, ())
if data:
return parseDatetimetz(data[0])
else:
return None
def __set__(self, inst, value):
if not isinstance(value, datetime):
raise TypeError("Element must be %s", datetime)
value = unicode(value.isoformat('T'), 'ascii')
super(DateProperty, self).__set__(inst, value)
class SequenceProperty(SimpleProperty):
def __get__(self, inst, klass):
if inst is None:
return self
return inst._mapping.get(self.__name__, ())
def __set__(self, inst, value):
value = tuple(value)
for v in value:
if not isinstance(v, unicode):
raise TypeError("Elements must be unicode")
inst._changed()
inst._mapping[self.__name__] = value
class ZopeDublinCore(object):
"""Zope Dublin Core Mixin
Subclasses should define either `_changed()` or `_p_changed`.
Just mix with `Persistence` to get a persistent version.
"""
implements(IZopeDublinCore)
def __init__(self, mapping=None):
if mapping is None:
mapping = {}
self._mapping = mapping
def _changed(self):
self._p_changed = True
title = ScalarProperty(u'Title')
def Title(self):
"See `IZopeDublinCore`"
return self.title
creators = SequenceProperty(u'Creator')
def Creator(self):
"See `IZopeDublinCore`"
return self.creators
subjects = SequenceProperty(u'Subject')
def Subject(self):
"See `IZopeDublinCore`"
return self.subjects
description = ScalarProperty(u'Description')
def Description(self):
"See `IZopeDublinCore`"
return self.description
publisher = ScalarProperty(u'Publisher')
def Publisher(self):
"See IZopeDublinCore"
return self.publisher
contributors = SequenceProperty(u'Contributor')
def Contributors(self):
"See `IZopeDublinCore`"
return self.contributors
def Date(self):
"See IZopeDublinCore"
return _scalar_get(self, u'Date')
created = DateProperty(u'Date.Created')
def CreationDate(self):
"See `IZopeDublinCore`"
return _scalar_get(self, u'Date.Created')
effective = DateProperty(u'Date.Effective')
def EffectiveDate(self):
"See `IZopeDublinCore`"
return _scalar_get(self, u'Date.Effective')
expires = DateProperty(u'Date.Expires')
def ExpirationDate(self):
"See `IZopeDublinCore`"
return _scalar_get(self, u'Date.Expires')
modified = DateProperty(u'Date.Modified')
def ModificationDate(self):
"See `IZopeDublinCore`"
return _scalar_get(self, u'Date.Modified')
type = ScalarProperty(u'Type')
def Type(self):
"See `IZopeDublinCore`"
return self.type
format = ScalarProperty(u'Format')
def Format(self):
"See `IZopeDublinCore`"
return self.format
identifier = ScalarProperty(u'Identifier')
def Identifier(self):
"See `IZopeDublinCore`"
return self.identifier
language = ScalarProperty(u'Language')
def Language(self):
"See `IZopeDublinCore`"
return self.language
rights = ScalarProperty(u'Rights')
def Rights(self):
"See `IZopeDublinCore`"
return self.rights
def setQualifiedTitles(self, qualified_titles):
"See `IWritableDublinCore`"
return _set_qualified(self, u'Title', qualified_titles)
def setQualifiedCreators(self, qualified_creators):
"See `IWritableDublinCore`"
return _set_qualified(self, u'Creator', qualified_creators)
def setQualifiedSubjects(self, qualified_subjects):
"See `IWritableDublinCore`"
return _set_qualified(self, u'Subject', qualified_subjects)
def setQualifiedDescriptions(self, qualified_descriptions):
"See `IWritableDublinCore`"
return _set_qualified(self, u'Description', qualified_descriptions)
def setQualifiedPublishers(self, qualified_publishers):
"See `IWritableDublinCore`"
return _set_qualified(self, u'Publisher', qualified_publishers)
def setQualifiedContributors(self, qualified_contributors):
"See `IWritableDublinCore`"
return _set_qualified(self, u'Contributor', qualified_contributors)
def setQualifiedDates(self, qualified_dates):
"See `IWritableDublinCore`"
return _set_qualified(self, u'Date', qualified_dates)
def setQualifiedTypes(self, qualified_types):
"See `IWritableDublinCore`"
return _set_qualified(self, u'Type', qualified_types)
def setQualifiedFormats(self, qualified_formats):
"See `IWritableDublinCore`"
return _set_qualified(self, u'Format', qualified_formats)
def setQualifiedIdentifiers(self, qualified_identifiers):
"See `IWritableDublinCore`"
return _set_qualified(self, u'Identifier', qualified_identifiers)
def setQualifiedSources(self, qualified_sources):
"See `IWritableDublinCore`"
return _set_qualified(self, u'Source', qualified_sources)
def setQualifiedLanguages(self, qualified_languages):
"See `IWritableDublinCore`"
return _set_qualified(self, u'Language', qualified_languages)
def setQualifiedRelations(self, qualified_relations):
"See `IWritableDublinCore`"
return _set_qualified(self, u'Relation', qualified_relations)
def setQualifiedCoverages(self, qualified_coverages):
"See `IWritableDublinCore`"
return _set_qualified(self, u'Coverage', qualified_coverages)
def setQualifiedRights(self, qualified_rights):
"See `IWritableDublinCore`"
return _set_qualified(self, u'Rights', qualified_rights)
def getQualifiedTitles(self):
"See `IStandardDublinCore`"
return _get_qualified(self, u'Title')
def getQualifiedCreators(self):
"See `IStandardDublinCore`"
return _get_qualified(self, u'Creator')
def getQualifiedSubjects(self):
"See `IStandardDublinCore`"
return _get_qualified(self, u'Subject')
def getQualifiedDescriptions(self):
"See `IStandardDublinCore`"
return _get_qualified(self, u'Description')
def getQualifiedPublishers(self):
"See `IStandardDublinCore`"
return _get_qualified(self, u'Publisher')
def getQualifiedContributors(self):
"See `IStandardDublinCore`"
return _get_qualified(self, u'Contributor')
def getQualifiedDates(self):
"See `IStandardDublinCore`"
return _get_qualified(self, u'Date')
def getQualifiedTypes(self):
"See `IStandardDublinCore`"
return _get_qualified(self, u'Type')
def getQualifiedFormats(self):
"See `IStandardDublinCore`"
return _get_qualified(self, u'Format')
def getQualifiedIdentifiers(self):
"See `IStandardDublinCore`"
return _get_qualified(self, u'Identifier')
def getQualifiedSources(self):
"See `IStandardDublinCore`"
return _get_qualified(self, u'Source')
def getQualifiedLanguages(self):
"See `IStandardDublinCore`"
return _get_qualified(self, u'Language')
def getQualifiedRelations(self):
"See `IStandardDublinCore`"
return _get_qualified(self, u'Relation')
def getQualifiedCoverages(self):
"See `IStandardDublinCore`"
return _get_qualified(self, u'Coverage')
def getQualifiedRights(self):
"See `IStandardDublinCore`"
return _get_qualified(self, u'Rights')
def _set_qualified(self, name, qvalue):
data = {}
dict = self._mapping
for qualification, value in qvalue:
data[qualification] = data.get(qualification, ()) + (value, )
self._changed()
for qualification, values in data.iteritems():
qname = qualification and (name + '.' + qualification) or name
dict[qname] = values
def _get_qualified(self, name):
result = []
for aname, avalue in self._mapping.iteritems():
if aname == name:
qualification = u''
for value in avalue:
result.append((qualification, value))
elif aname.startswith(name):
qualification = aname[len(name)+1:]
for value in avalue:
result.append((qualification, value))
return tuple(result)
__doc__ = ZopeDublinCore.__doc__ + __doc__
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