import xml.sax
import stackless
import time

xml_filename = "/Users/dalke/Music/iTunes/iTunes Music Library.xml"
#xml_text = "<cities><city>Dallas</city><city>Santa Fe</city></cities>"

class StacklessContentHandler(xml.sax.ContentHandler):
    def __init__(self, chan):
        self.chan = chan
    def startDocument(self):
        self.chan.send( ("startDocument", None) )
    def startElement(self, tag, attrib):
        self.chan.send( ("startElement", (tag, attrib)) )
    def characters(self, text):
        self.chan.send( ("characters", text) )
    def endElement(self, tag):
        self.chan.send( ("endElement", tag) )
    def endDocument(self):
        self.chan.send( ("endDocument", None) )

def iterParse(filename):
    chan = stackless.channel()
    handler = StacklessContentHandler(chan)
    stackless.tasklet(xml.sax.parse)(filename, handler)
    while 1:
        data = chan.receive()
        yield data
        if data[0] == "endDocument":
            break
        
def main():
    for (event, args) in iterParse(xml_filename):
        if event == "startElement":
            tag, attrib = args
            #print "start", repr(tag), dict(attrib.items())
            pass
        elif event == "characters":
            #print "text", repr(args)
            pass
        elif event == "endElement":
            #print "end", repr(args)
            pass

if __name__ == "__main__":
    t1 = time.time()
    stackless.tasklet(main)()
    stackless.run()
    t2 = time.time()
    print t2-t1