annotate orpg/pulldom.py @ 200:43a91298ac33 alpha

Traipse Alpha 'OpenRPG' {100427-01} Traipse is a distribution of OpenRPG that is designed to be easy to setup and go. Traipse also makes it easy for developers to work on code without fear of sacrifice. 'Ornery-Orc' continues the trend of 'Grumpy' and adds fixes to the code. 'Ornery-Orc's main goal is to offer more advanced features and enhance the productivity of the user. Update Summary (Patch-2) New Features: New Namespace method with two new syntaxes New Namespace Internal is context sensitive, always! New Namespace External is 'as narrow as you make it' New Namespace FutureCheck helps ensure you don't receive an incorrect node New PluginDB access for URL2Link plugin New to Forms, they now show their content in Design Mode Fixes: Fix to Server GUI startup errors Fix to Server GUI Rooms tab updating Fix to Chat and Settings if non existant die roller is picked Fix to Dieroller and .open() used with .vs(). Successes are correctly calculated Fix to Alias Lib's Export to Tree, Open, Save features Fix to alias node, now works properly Fix to Splitter node, minor GUI cleanup Fix to Backgrounds not loading through remote loader Fix to Node name errors Fix to rolling dice in chat Whispers Fix to Splitters Sizing issues Fix to URL2Link plugin, modified regex compilation should remove memory leak Fix to mapy.py, a roll back due to zoomed grid issues Fix to whiteboard_handler, Circles work by you clicking the center of the circle Daily: I was having problems with Chat tabs. All fixed now.
author sirebral
date Tue, 27 Apr 2010 01:56:39 -0500
parents 551cd440acce
children
rev   line source
0
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1 import minidom
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2 import xml.sax,xml.sax.handler
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3 import types
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4
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5 try: from cStringIO import StringIO
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6 except ImportError: from StringIO import StringIO
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7
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8 try: _StringTypes = [types.StringType, types.UnicodeType]
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9 except AttributeError: _StringTypes = [types.StringType]
0
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10
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11 START_ELEMENT = "START_ELEMENT"
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12 END_ELEMENT = "END_ELEMENT"
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13 COMMENT = "COMMENT"
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14 START_DOCUMENT = "START_DOCUMENT"
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15 END_DOCUMENT = "END_DOCUMENT"
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16 PROCESSING_INSTRUCTION = "PROCESSING_INSTRUCTION"
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17 IGNORABLE_WHITESPACE = "IGNORABLE_WHITESPACE"
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18 CHARACTERS = "CHARACTERS"
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19
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20 class PullDOM(xml.sax.ContentHandler):
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21 def __init__(self):
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22 self.firstEvent = [None, None]
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23 self.lastEvent = self.firstEvent
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24 self._ns_contexts = [{}] # contains uri -> prefix dicts
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25 self._current_context = self._ns_contexts[-1]
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26
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27 def setDocumentLocator(self, locator): pass
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28
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29 def startPrefixMapping(self, prefix, uri):
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30 self._ns_contexts.append(self._current_context.copy())
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31 self._current_context[uri] = prefix
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32
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33 def endPrefixMapping(self, prefix):
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34 del self._ns_contexts[-1]
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35
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36 def startElementNS(self, name, tagName , attrs):
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37 uri,localname = name
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38 if uri:
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39 # When using namespaces, the reader may or may not
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40 # provide us with the original name. If not, create
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41 # *a* valid tagName from the current context.
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42 if tagName is None: tagName = self._current_context[uri] + ":" + localname
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43 node = self.document.createElementNS(uri, tagName)
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44 else:
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45 # When the tagname is not prefixed, it just appears as
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46 # localname
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47 node = self.document.createElement(localname)
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48 for aname,value in attrs.items():
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49 a_uri, a_localname = aname
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50 if a_uri:
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51 qname = self._current_context[a_uri] + ":" + a_localname
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52 attr = self.document.createAttributeNS(a_uri, qname)
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53 else: attr = self.document.createAttribute(a_localname)
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54 attr.value = value
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55 node.setAttributeNode(attr)
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56 parent = self.curNode
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57 node.parentNode = parent
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58 self.curNode = node
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59 self.lastEvent[1] = [(START_ELEMENT, node), None]
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60 self.lastEvent = self.lastEvent[1]
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61 #self.events.append((START_ELEMENT, node))
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62
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63 def endElementNS(self, name, tagName):
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64 node = self.curNode
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65 self.lastEvent[1] = [(END_ELEMENT, node), None]
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66 self.lastEvent = self.lastEvent[1]
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67 #self.events.append((END_ELEMENT, node))
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68 self.curNode = node.parentNode
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69
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70 def startElement(self, name, attrs):
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71 node = self.document.createElement(name)
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72 for aname,value in attrs.items():
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73 attr = self.document.createAttribute(aname)
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74 attr.value = value
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75 node.setAttributeNode(attr)
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76 parent = self.curNode
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77 node.parentNode = parent
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78 self.curNode = node
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79 self.lastEvent[1] = [(START_ELEMENT, node), None]
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80 self.lastEvent = self.lastEvent[1]
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81 #self.events.append((START_ELEMENT, node))
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82
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83 def endElement(self, name):
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84 node = self.curNode
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85 self.lastEvent[1] = [(END_ELEMENT, node), None]
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86 self.lastEvent = self.lastEvent[1]
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87 #self.events.append((END_ELEMENT, node))
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88 self.curNode = node.parentNode
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89
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90 def comment(self, s):
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91 node = self.document.createComment(s)
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92 parent = self.curNode
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93 node.parentNode = parent
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94 self.lastEvent[1] = [(COMMENT, node), None]
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95 self.lastEvent = self.lastEvent[1]
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96 #self.events.append((COMMENT, node))
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97
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98 def processingInstruction(self, target, data):
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99 node = self.document.createProcessingInstruction(target, data)
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100 parent = self.curNode
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101 node.parentNode = parent
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102 self.lastEvent[1] = [(PROCESSING_INSTRUCTION, node), None]
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103 self.lastEvent = self.lastEvent[1]
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104 #self.events.append((PROCESSING_INSTRUCTION, node))
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105
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106 def ignorableWhitespace(self, chars):
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107 node = self.document.createTextNode(chars[start:start + length])
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108 parent = self.curNode
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109 node.parentNode = parent
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110 self.lastEvent[1] = [(IGNORABLE_WHITESPACE, node), None]
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111 self.lastEvent = self.lastEvent[1]
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112 #self.events.append((IGNORABLE_WHITESPACE, node))
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113
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114 def characters(self, chars):
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115 node = self.document.createTextNode(chars)
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116 parent = self.curNode
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117 node.parentNode = parent
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118 self.lastEvent[1] = [(CHARACTERS, node), None]
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119 self.lastEvent = self.lastEvent[1]
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120
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121 def startDocument(self):
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122 node = self.curNode = self.document = minidom.Document()
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123 node.parentNode = None
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124 self.lastEvent[1] = [(START_DOCUMENT, node), None]
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125 self.lastEvent = self.lastEvent[1]
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126 #self.events.append((START_DOCUMENT, node))
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127
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128 def endDocument(self):
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129 assert not self.curNode.parentNode
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130 for node in self.curNode.childNodes:
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131 if node.nodeType == node.ELEMENT_NODE: self.document.documentElement = node
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132 #if not self.document.documentElement:
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133 # raise Error, "No document element"
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134 self.lastEvent[1] = [(END_DOCUMENT, node), None]
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135 #self.events.append((END_DOCUMENT, self.curNode))
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136
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137 class ErrorHandler:
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138 def warning(self, exception):
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139 print exception
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140 def error(self, exception):
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141 raise exception
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142 def fatalError(self, exception):
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143 raise exception
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144
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145 class DOMEventStream:
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146 def __init__(self, stream, parser, bufsize):
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147 self.stream = stream
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148 self.parser = parser
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149 self.bufsize = bufsize
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150 self.reset()
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151
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152 def reset(self):
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153 self.pulldom = PullDOM()
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154 # This content handler relies on namespace support
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155 self.parser.setFeature(xml.sax.handler.feature_namespaces,1)
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156 self.parser.setContentHandler(self.pulldom)
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157
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158 def __getitem__(self, pos):
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159 rc = self.getEvent()
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160 if rc: return rc
0
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161 raise IndexError
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162
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163 def expandNode(self, node):
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164 event = self.getEvent()
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165 while event:
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166 token, cur_node = event
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167 if cur_node is node: return
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168 if token != END_ELEMENT: cur_node.parentNode.appendChild(cur_node)
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169 event = self.getEvent()
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170
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171 def getEvent(self):
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172 if not self.pulldom.firstEvent[1]: self.pulldom.lastEvent = self.pulldom.firstEvent
0
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173 while not self.pulldom.firstEvent[1]:
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174 buf=self.stream.read(self.bufsize)
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175 if not buf:
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176 #FIXME: why doesn't Expat close work?
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177 #self.parser.close()
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178 return None
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179 self.parser.feed(buf)
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180 rc = self.pulldom.firstEvent[1][0]
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181 self.pulldom.firstEvent[1] = self.pulldom.firstEvent[1][1]
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182 return rc
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183
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184 class SAX2DOM(PullDOM):
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185
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186 def startElementNS(self, name, tagName , attrs):
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187 PullDOM.startElementNS(self, name, tagName, attrs)
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188 self.curNode.parentNode.appendChild(self.curNode)
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189
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190 def startElement(self, name, attrs):
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191 PullDOM.startElement(self, name, attrs)
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192 self.curNode.parentNode.appendChild(self.curNode)
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193
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194 def processingInstruction(self, target, data):
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195 PullDOM.processingInstruction(self, target, data)
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196 node = self.lastEvent[0][1]
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197 node.parentNode.appendChild(node)
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198
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199 def ignorableWhitespace(self, chars):
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200 PullDOM.ignorableWhitespace(self, chars)
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201 node = self.lastEvent[0][1]
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202 node.parentNode.appendChild(node)
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203
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204 def characters(self, chars):
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205 PullDOM.characters(self, chars)
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206 node = self.lastEvent[0][1]
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207 node.parentNode.appendChild(node)
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208
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209 default_bufsize = (2 ** 14) - 20
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210
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211 def parse(stream_or_string, parser=None, bufsize=default_bufsize):
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212 if type(stream_or_string) in _StringTypes: stream = open(stream_or_string)
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213 else: stream = stream_or_string
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214 if not parser: parser = xml.sax.make_parser()
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215 return DOMEventStream(stream, parser, bufsize)
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216
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217 def parseString(string, parser=None):
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218 bufsize = len(string)
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219 buf = StringIO(string)
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220 if not parser: parser = xml.sax.make_parser()
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221 return DOMEventStream(buf, parser, bufsize)