Source Code for Module XMLFormatting

 1  from xml.parsers import expat 
 2  import textInfos 
 3  from logHandler import log 
 4   
 5 -class XMLTextParser(object):  
 6   
 7 -        def __init__(self): 
 8                  self.parser=expat.ParserCreate('utf-8') 
 9                  self.parser.StartElementHandler=self._startElementHandler 
10                  self.parser.EndElementHandler=self._EndElementHandler 
11                  self.parser.CharacterDataHandler=self._CharacterDataHandler 
12                  self._commandList=[] 
13   
14 -        def _startElementHandler(self,tagName,attrs): 
15                  if tagName=='control': 
16                          newAttrs=textInfos.ControlField(attrs) 
17                          self._commandList.append(textInfos.FieldCommand("controlStart",newAttrs)) 
18                  elif tagName=='text': 
19                          newAttrs=textInfos.FormatField(attrs) 
20                          self._commandList.append(textInfos.FieldCommand("formatChange",newAttrs)) 
21                  else: 
22                          raise ValueError("Unknown tag name: %s"%tagName) 
23   
24                  # Normalise attributes common to both field types. 
25                  try: 
26                          newAttrs["_startOfNode"] = newAttrs["_startOfNode"] == "1" 
27                  except KeyError: 
28                          pass 
29                  try: 
30                          newAttrs["_endOfNode"] = newAttrs["_endOfNode"] == "1" 
31                  except KeyError: 
32                          pass 
33   
34 -        def _EndElementHandler(self,tagName): 
35                  if tagName=="control": 
36                          self._commandList.append(textInfos.FieldCommand("controlEnd",None)) 
37                  elif tagName=="text": 
38                          pass 
39                  else: 
40                          raise ValueError("unknown tag name: %s"%tagName) 
41   
42 -        def _CharacterDataHandler(self,data): 
43                  cmdList=self._commandList 
44                  if cmdList and isinstance(cmdList[-1],basestring): 
45                          cmdList[-1]+=data 
46                  else: 
47                          cmdList.append(data) 
48   
49 -        def parse(self,XMLText): 
50                  try: 
51                          self.parser.Parse(XMLText.encode('utf-8')) 
52                  except: 
53                          log.error("XML: %s"%XMLText,exc_info=True) 
54                  return self._commandList 
55