0de607514d
git-svn-id: svn://svn.cy55.de/Zope3/src/loops/trunk@1686 fd906abe-77d9-0310-91a1-e0d9ade77398
99 lines
3.3 KiB
Python
99 lines
3.3 KiB
Python
#
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# Copyright (c) 2007 Helmut Merz helmutm@cy55.de
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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"""
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Concept adapter(s) for external collections, e.g. a directory in the
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file system.
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$Id$
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"""
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import os, re
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from zope.component import adapts
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from zope.interface import implements, Attribute
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from zope.cachedescriptors.property import Lazy
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from zope.schema.interfaces import IField
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from zope.traversing.api import getName, getParent
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from cybertools.typology.interfaces import IType
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from loops.common import AdapterBase
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from loops.interfaces import IResource, IConcept
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from loops.integrator.interfaces import IExternalCollection
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from loops.integrator.interfaces import IExternalCollectionProvider
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from loops.resource import Resource
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from loops.setup import addObject
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from loops.type import TypeInterfaceSourceList
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TypeInterfaceSourceList.typeInterfaces += (IExternalCollection,)
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class ExternalCollectionAdapter(AdapterBase):
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""" A concept adapter for accessing an external collection.
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May delegate access to a named utility.
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"""
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implements(IExternalCollection)
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adapts(IConcept)
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_adapterAttributes = ('context', '__parent__',)
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_contextAttributes = list(IExternalCollection) + list(IConcept)
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def create(self):
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pass
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def update(self):
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pass
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class DirectoryCollectionProvider(object):
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""" A utility that provides access to files in a directory.
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"""
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implements(IExternalCollectionProvider)
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def collect(self, client):
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directory = self.getDirectory(client)
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pattern = re.compile(client.pattern or '.*')
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result = []
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for path, dirs, files in os.walk(directory):
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if files:
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result.extend(os.path.join(path[len(directory)+1:], f)
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for f in files
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if pattern.match(f))
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return result
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def createExtFileObjects(self, client, addresses, extFileType=None):
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if extFileType is None:
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extFileType = client.context.getLoopsRoot().getConceptManager()['extfile']
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rm = client.context.getLoopsRoot().getResourceManager()
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directory = self.getDirectory(client)
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for addr in addresses:
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name = addr
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obj = addObject(rm, Resource, name,
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title=addr.decode('UTF-8'), type=extFileType,
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externalAddress=addr,
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storage='fullpath',
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storageParams=dict(subdirectory=directory))
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yield obj
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def getDirectory(self, client):
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baseAddress = client.baseAddress or ''
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address = client.address or ''
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return os.path.join(baseAddress, address)
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