86d7781725
git-svn-id: svn://svn.cy55.de/Zope3/src/loops/trunk@2436 fd906abe-77d9-0310-91a1-e0d9ade77398
159 lines
4.3 KiB
Python
159 lines
4.3 KiB
Python
#
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# Copyright (c) 2008 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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Adapter implementations for export, import, ...
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Obsolete, replaced by functionality in loops.external.base and other modules
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$Id$
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"""
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from zope.interface import implements, Interface
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from zope.app import zapi
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from zope.component import adapts
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from loops.interfaces import IViewManager
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from loops.view import Node
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# import/export interfaces (for adapters)
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class IExternalContentSource(Interface):
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""" Provides content from an external source.
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"""
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def getData():
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""" Retrieve content from the external source; return a sequence of
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dictionaries in a format like this:
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[{'name': ..., 'title': ..., 'body':... }, ...],
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"""
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class ILoader(Interface):
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""" Inserts data provided by an IExternalContentSource object into the
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database.
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"""
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def load(data):
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""" Create objects as defined by the data given; this is a sequence
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as described for IExternalContentSource.getContent().
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"""
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class IExporter(Interface):
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""" Extracts data and in a format usable by ILoader.
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Optionally dump data to a file.
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"""
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def extractData():
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""" Return a data object as described for
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IExternalContentSource.getData().
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"""
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def dumpData(file):
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""" Dump data returned by extractData() to the file given in a
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format that might be read in by a suitable implementation of
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IExternalContentSource.
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"""
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# implementations for views/nodes
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class NodesLoader(object):
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implements(ILoader)
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adapts(IViewManager)
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def __init__(self, context):
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self.context = context
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def load(self, data):
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for item in data:
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name = item['name']
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path = item['path']
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parent = zapi.traverse(self.context, path)
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if name in parent: # replace existing objects
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del parent[name]
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node = Node()
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node.title = item['title']
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node.description = item['description']
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node.body = item['body']
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node.nodeType = item['nodeType']
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parent[name] = node
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class NodesExporter(object):
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implements(IExporter)
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adapts(IViewManager)
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filename = 'loops.dmp'
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def __init__(self, context):
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self.context = context
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def extractData(self):
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data = []
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for child in self.context.values():
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self.extractNodeData(child, '', data)
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return data
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def extractNodeData(self, item, path, data):
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name = zapi.getName(item)
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data.append({
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'name': name,
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'path': path,
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'description': item.description,
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'title': item.title,
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'body': item.body,
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'nodeType': item.nodeType
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})
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path = path and '%s/%s' % (path, name) or name
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for child in item.values():
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self.extractNodeData(child, path, data)
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def dumpData(self, file=None, noclose=False):
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if file is None:
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file = open(self.filename, 'w')
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data = self.extractData()
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text = `data`.replace('},', '},\n').replace('}],', '}],\n')
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file.write(text)
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if not noclose:
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file.close()
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class NodesImporter(object):
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implements(IExternalContentSource)
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adapts(IViewManager)
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filename = 'loops.dmp'
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def __init__(self, context):
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self.context = context
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def getData(self, file=None):
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if file is None:
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file = open(self.filename, 'r')
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data = file.read().replace('\n', '')
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file.close()
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return eval(data, {}, {})
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