Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/django/utils/xmlutils.py: 42%

1""" 

2Utilities for XML generation/parsing. 

3""" 

4 

5import re 

6from xml.sax.saxutils import XMLGenerator 

7 

8 

9class UnserializableContentError(ValueError): 

10 pass 

11 

12 

13class SimplerXMLGenerator(XMLGenerator): 

14 def addQuickElement(self, name, contents=None, attrs=None): 

15 "Convenience method for adding an element with no children" 

16 if attrs is None: 

17 attrs = {} 

18 self.startElement(name, attrs) 

19 if contents is not None: 

20 self.characters(contents) 

21 self.endElement(name) 

22 

23 def characters(self, content): 

24 if content and re.search(r"[\x00-\x08\x0B-\x0C\x0E-\x1F]", content): 

25 # Fail loudly when content has control chars (unsupported in XML 1.0) 

26 # See https://www.w3.org/International/questions/qa-controls 

27 raise UnserializableContentError( 

28 "Control characters are not supported in XML 1.0" 

29 ) 

30 XMLGenerator.characters(self, content) 

31 

32 def startElement(self, name, attrs): 

33 # Sort attrs for a deterministic output. 

34 sorted_attrs = dict(sorted(attrs.items())) if attrs else attrs 

35 super().startElement(name, sorted_attrs)