git.demorecorder.com Git - free-sw/xcb/proto/blob - src/size.py

   1 #!/usr/bin/python
   2
   3 from xml.sax.saxutils import XMLFilterBase, XMLGenerator
   4 from xml.sax.xmlreader import AttributesImpl
   5 from xml.sax import make_parser
   6 import sys
   7
   8 def AttributesUnion(base, **values):
   9         baseitems = dict(base)
  10         baseitems.update(values)
  11         return AttributesImpl(baseitems)
  12
  13 class AnnotateSize(XMLFilterBase):
  14         types = {
  15                 'BYTE': 1,
  16                 'BOOL': 1,
  17                 'CARD8': 1,
  18                 'CARD16': 2,
  19                 'CARD32': 4,
  20                 'INT8': 1,
  21                 'INT16': 2,
  22                 'INT32': 4,
  23                 'float': 4,
  24                 'double': 8,
  25         }
  26         header = None
  27         def setTypeSize(self, name, size):
  28                 self.types[name] = size
  29                 self.types[self.header + ':' + name] = size
  30
  31         struct = None
  32         union = None
  33         def startElement(self, name, attrs):
  34                 if name == 'xcb':
  35                         self.header = attrs['header']
  36                 elif name == 'field':
  37                         size = self.types.get(attrs['type'], 0)
  38                         if self.struct is not None:
  39                                 self.totalsize += size
  40                         elif self.union is not None:
  41                                 self.totalsize = max(self.totalsize, size)
  42                         attrs = AttributesUnion(attrs, bytes=str(size))
  43                 elif name == 'xidtype':
  44                         self.setTypeSize(attrs['name'], 4)
  45                 elif name == 'typedef':
  46                         self.setTypeSize(attrs['newname'], self.types[attrs['oldname']])
  47                 elif name == 'struct' or name == 'union':
  48                         assert self.struct is None and self.union is None
  49                         setattr(self, name, attrs['name'])
  50                         self.totalsize = 0
  51                 XMLFilterBase.startElement(self, name, attrs)
  52
  53         def endElement(self, name):
  54                 if name == 'struct' or name == 'union':
  55                         assert getattr(self, name) is not None
  56                         self.setTypeSize(getattr(self, name), self.totalsize)
  57                         setattr(self, name, None)
  58                         del self.totalsize
  59                 XMLFilterBase.endElement(self, name)
  60
  61 annotator = AnnotateSize(make_parser())
  62 annotator.setContentHandler(XMLGenerator())
  63 for f in sys.argv[1:]:
  64         annotator.parse(f)