[275] | 1 | from xml.dom import minidom |
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| 2 | |
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| 3 | from zope.interface import classProvides, implements |
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| 4 | |
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| 5 | from Acquisition import aq_base |
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| 6 | |
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| 7 | from collective.transmogrifier.interfaces import ISection, ISectionBlueprint |
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| 8 | from collective.transmogrifier.utils import defaultMatcher |
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| 9 | |
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| 10 | class DiscussionContainerSection(object): |
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| 11 | classProvides(ISectionBlueprint) |
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| 12 | implements(ISection) |
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| 13 | |
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| 14 | def __init__(self, transmogrifier, name, options, previous): |
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| 15 | self.previous = previous |
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| 16 | self.context = transmogrifier.context |
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| 17 | |
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| 18 | self.pathkey = defaultMatcher(options, 'path-key', name, 'path') |
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| 19 | |
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| 20 | self.doc = minidom.Document() |
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| 21 | |
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| 22 | |
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| 23 | def __iter__(self): |
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| 24 | for item in self.previous: |
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| 25 | pathkey = self.pathkey(*item.keys())[0] |
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| 26 | |
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| 27 | if not pathkey: |
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| 28 | yield item; continue |
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| 29 | |
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| 30 | path = item[pathkey] |
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| 31 | obj = self.context.unrestrictedTraverse(path, None) |
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| 32 | if obj is None: # path doesn't exist |
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| 33 | yield item; continue |
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| 34 | |
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| 35 | # check if object has comments |
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| 36 | discussion_container = getattr(aq_base(obj), 'talkback', None) |
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| 37 | if discussion_container is not None: |
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| 38 | data = self.extractComments(discussion_container) |
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| 39 | if data: |
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| 40 | files = item.setdefault('_files', {}) |
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| 41 | item['_files']['discussioncontainer'] = { |
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| 42 | 'name': '.comments.xml', |
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| 43 | 'data': data, |
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| 44 | } |
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| 45 | |
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| 46 | yield item |
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| 47 | |
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| 48 | def extractComments(self, container): |
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| 49 | doc = self.doc |
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| 50 | |
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| 51 | items = container.objectItems() |
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| 52 | if not items: |
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| 53 | return None |
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| 54 | |
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| 55 | root = doc.createElement('discussion') |
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| 56 | doc.appendChild(root) |
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| 57 | for item_id, item in items: |
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| 58 | hdrlist = item.getMetadataHeaders() |
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| 59 | # get creator (it is displayed in "Posted by") |
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| 60 | hdrlist.append(('Creator', item.Creator())) |
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| 61 | # get modification date (also is displayed) |
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| 62 | hdrlist.append(('Modification_date', item.ModificationDate())) |
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| 63 | # get relation |
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| 64 | hdrlist.append(('In_reply_to', str(item.in_reply_to))) |
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| 65 | # get comment text |
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| 66 | hdrlist.append(('Text', item.text)) |
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| 67 | |
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| 68 | item_elem = doc.createElement('item') |
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| 69 | attr = doc.createAttribute('id') |
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| 70 | attr.value = item_id |
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| 71 | item_elem.setAttributeNode(attr) |
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| 72 | |
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| 73 | for k, v in hdrlist: |
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| 74 | field = doc.createElement('field') |
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| 75 | attr = doc.createAttribute('name') |
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| 76 | attr.value = k |
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| 77 | field.setAttributeNode(attr) |
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| 78 | text = doc.createTextNode(v) |
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| 79 | field.appendChild(text) |
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| 80 | item_elem.appendChild(field) |
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| 81 | |
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| 82 | root.appendChild(item_elem) |
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| 83 | |
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| 84 | # all comments are strings encoded in 'utf-8' and they will properly |
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| 85 | # saved in xml file, but if we explicitly give 'utf-8' encoding |
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| 86 | # UnicodeDecodeError will be raised when they have non-ascii chars |
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| 87 | data = self.doc.toprettyxml(indent=' ') #, encoding='utf-8') |
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| 88 | |
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| 89 | self.doc.unlink() |
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| 90 | return data |
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