solenv/bin/constructors.py

   1 #!/usr/bin/env python3
   2
   3 # Call $0 <file with a list of component file paths>
   4 # Dumps all the implementing constructors to stdout
   5
   6 import xml.sax
   7 import os.path
   8 import sys
   9
  10 constructors = list()
  11
  12 class ComponentHandler(xml.sax.ContentHandler):
  13     def startElement(self, tag, attributes):
  14         if tag == "implementation" and "constructor" in attributes:
  15             constructors.append(attributes["constructor"])
  16
  17 if __name__ == "__main__":
  18     parser = xml.sax.make_parser()
  19     parser.setFeature(xml.sax.handler.feature_namespaces, 0)
  20     parser.setContentHandler(ComponentHandler())
  21     for filename in sys.argv[1:]:
  22         with open(filename, "r") as components_listfile:
  23             for line in components_listfile:
  24                 for component_filename in line.strip().split():
  25                     parser.parse(component_filename)
  26     constructors.sort()
  27     print("\n".join(constructors))