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 | from Products.CMFCore import utils |
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7 | from Products.CMFDefault import DiscussionItem |
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8 | from Products.CMFDefault.exceptions import DiscussionNotAllowed |
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9 | |
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10 | from collective.transmogrifier.interfaces import ISection, ISectionBlueprint |
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11 | from collective.transmogrifier.utils import defaultMatcher |
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12 | |
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13 | class CommentsExporterSection(object): |
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14 | classProvides(ISectionBlueprint) |
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15 | implements(ISection) |
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16 | |
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17 | def __init__(self, transmogrifier, name, options, previous): |
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18 | self.previous = previous |
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19 | self.context = transmogrifier.context |
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20 | |
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21 | self.pathkey = defaultMatcher(options, 'path-key', name, 'path') |
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22 | self.fileskey = options.get('files-key', '_files').strip() |
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23 | |
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24 | self.doc = minidom.Document() |
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25 | |
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26 | def __iter__(self): |
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27 | for item in self.previous: |
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28 | pathkey = self.pathkey(*item.keys())[0] |
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29 | |
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30 | if not pathkey: |
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31 | yield item; continue |
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32 | |
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33 | path = item[pathkey] |
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34 | obj = self.context.unrestrictedTraverse(path, None) |
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35 | if obj is None: # path doesn't exist |
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36 | yield item; continue |
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37 | |
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38 | # check if object has comments |
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39 | discussion_container = getattr(aq_base(obj), 'talkback', None) |
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40 | if discussion_container is not None: |
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41 | data = self.extractComments(discussion_container) |
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42 | if data: |
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43 | files = item.setdefault(self.fileskey, {}) |
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44 | item[self.fileskey]['comments'] = { |
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45 | 'name': '.comments.xml', |
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46 | 'data': data, |
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47 | } |
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48 | |
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49 | yield item |
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50 | |
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51 | def extractComments(self, container): |
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52 | doc = self.doc |
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53 | |
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54 | items = container.objectItems() |
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55 | if not items: |
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56 | return None |
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57 | |
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58 | root = doc.createElement('discussion') |
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59 | doc.appendChild(root) |
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60 | for item_id, item in items: |
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61 | hdrlist = item.getMetadataHeaders() |
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62 | # get creator (it is displayed in "Posted by") |
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63 | hdrlist.append(('Creator', item.Creator())) |
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64 | # get modification date (also is displayed) |
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65 | hdrlist.append(('Modification_date', item.ModificationDate())) |
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66 | # get relation |
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67 | hdrlist.append(('In_reply_to', str(item.in_reply_to))) |
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68 | # get comment text |
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69 | hdrlist.append(('Text', item.text)) |
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70 | |
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71 | item_elem = doc.createElement('item') |
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72 | attr = doc.createAttribute('id') |
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73 | attr.value = item_id |
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74 | item_elem.setAttributeNode(attr) |
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75 | |
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76 | for k, v in hdrlist: |
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77 | field = doc.createElement('field') |
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78 | attr = doc.createAttribute('name') |
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79 | attr.value = k |
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80 | field.setAttributeNode(attr) |
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81 | text = doc.createTextNode(v) |
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82 | field.appendChild(text) |
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83 | item_elem.appendChild(field) |
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84 | |
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85 | root.appendChild(item_elem) |
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86 | |
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87 | |
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88 | try: |
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89 | data = self.doc.toprettyxml(indent=' ', encoding='utf-8') |
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90 | except UnicodeError, e: |
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91 | # all comments are strings encoded in 'utf-8' and they will properly |
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92 | # saved in xml file, but if we explicitly give 'utf-8' encoding |
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93 | # UnicodeDecodeError will be raised when they have non-ascii chars |
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94 | data = self.doc.toprettyxml(indent=' ') |
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95 | |
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96 | self.doc.unlink() |
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97 | return data |
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98 | |
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99 | class CommentsImporterSection(object): |
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100 | classProvides(ISectionBlueprint) |
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101 | implements(ISection) |
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102 | |
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103 | def __init__(self, transmogrifier, name, options, previous): |
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104 | self.previous = previous |
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105 | self.context = transmogrifier.context |
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106 | |
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107 | self.pathkey = defaultMatcher(options, 'path-key', name, 'path') |
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108 | self.fileskey = defaultMatcher(options, 'files-key', name, 'files') |
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109 | |
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110 | self.dtool = utils.getToolByName(self.context, 'portal_discussion') |
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111 | |
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112 | def __iter__(self): |
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113 | for item in self.previous: |
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114 | pathkey = self.pathkey(*item.keys())[0] |
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115 | fileskey = self.fileskey(*item.keys())[0] |
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116 | |
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117 | if not (pathkey and fileskey): |
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118 | yield item; continue |
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119 | |
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120 | if 'comments' not in item[fileskey]: |
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121 | yield item; continue |
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122 | |
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123 | path = item[pathkey] |
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124 | obj = self.context.unrestrictedTraverse(path, None) |
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125 | if obj is None: # path doesn't exist |
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126 | yield item; continue |
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127 | |
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128 | # allow discussion if it wasn't allowed (because we have comments) |
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129 | try: |
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130 | discussion_container = self.dtool.getDiscussionFor(obj) |
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131 | except DiscussionNotAllowed: |
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132 | obj.allow_discussion = True |
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133 | discussion_container = self.dtool.getDiscussionFor(obj) |
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134 | |
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135 | data = item[fileskey]['comments']['data'] |
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136 | discussion_container._container.clear() |
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137 | for id_, props in self.parseXML(data).items(): |
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138 | comment = DiscussionItem.DiscussionItem(id_) |
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139 | discussion_container._container[id_] = comment |
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140 | comment = comment.__of__(discussion_container) |
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141 | self.updateDiscussionItem(comment, props) |
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142 | |
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143 | yield item |
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144 | |
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145 | def parseXML(self, data): |
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146 | doc = minidom.parseString(data) |
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147 | root = doc.documentElement |
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148 | |
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149 | items = {} |
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150 | for child in root.childNodes: |
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151 | if child.nodeName != 'item': |
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152 | continue |
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153 | id_ = str(child.getAttribute('id')) |
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154 | item = items[id_] = {} |
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155 | for field in child.childNodes: |
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156 | if field.nodeName != 'field': |
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157 | continue |
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158 | name = field.getAttribute('name') |
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159 | # this will be unicode string, encode it? |
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160 | value = '' |
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161 | for node in field.childNodes: |
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162 | if node.nodeName != '#text': |
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163 | continue |
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164 | lines = [line.lstrip() for line in node.nodeValue.splitlines()] |
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165 | value += '\n'.join(lines) |
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166 | item[name] = value.strip() |
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167 | |
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168 | return items |
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169 | |
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170 | def updateDiscussionItem(self, item, props): |
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171 | in_reply_to = props['In_reply_to'] |
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172 | # if 'In_reply_to' field is string "None" we need to set attribute to None |
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173 | if in_reply_to == 'None': |
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174 | item.in_reply_to = None |
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175 | else: |
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176 | item.in_reply_to = in_reply_to |
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177 | |
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178 | item.addCreator(props['Creator']) |
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179 | item.setFormat('text/plain') |
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180 | item.setMetadata(props) |
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181 | item._edit(text=props['Text']) |
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182 | item.setModificationDate(props['Modification_date']) |
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183 | item.indexObject() |
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