source: fedkit/parsevis.py

#!/usr/bin/python -u
import libxml2

class federated_visualization:
    class callback:
        def __init__(self):
            self.result = { };
            self.row = { };
            self.node_fields = set(["name", "x", "y", "type"]);
            self.float_fields = set(["x", "y"]);
            self.last_chars = "";
        pass

        def startDocument(self):
            pass

        def endDocument(self):
            pass

        def startElement(self, tag, attrs):
            if tag == "node": 
                self.row = {}
            pass

        def endElement(self, tag):
            if tag == "node":
                self.result[self.row["name"]] = self.row;
            elif tag in self.node_fields:
                if tag in self.float_fields:
                    self.row[tag] = float(self.last_chars);
                else:
                    self.row[tag] = self.last_chars;
                pass
            pass

        def characters(self, data):
            self.last_chars = data;
            pass

        def warning(self, msg):
            print "Warning: %s!" %  msg
            pass

        def error(self, msg):
            print "Error: %s!" %  msg
            pass

        def fatalError(self, msg):
            global log
            print "fatalError: %s:" % (msg)

    def __init__(self, file):
        self.handler = self.callback()
        self.result = { };
        libxml2.SAXParseFile(self.handler, file, 0);
        self.result = self.handler.result;
        libxml2.cleanupParser()
        pass
pass

if __name__ == "__main__":
    import sys;
    parse = federated_visualization(sys.argv[1]);
    print parse.result
pass