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#! /usr/bin/env python

'''Python GPS downloaded for OSM'''

import sgmllib

class MyParser(sgmllib.SGMLParser):
    "A simple parser class."

    def parse(self, s):
        "Parse the given string 's'."
        self.feed(s)
        self.close()

    def __init__(self, verbose=0):
        "Initialise an object, passing 'verbose' to the superclass."

        sgmllib.SGMLParser.__init__(self, verbose)
        self.hyperlinks = []

    def start_a(self, attributes):
        "Process a hyperlink and its 'attributes'."

        for name, value in attributes:
            if name == "href":
                self.hyperlinks.append(value)

    def get_hyperlinks(self):
        "Return the list of hyperlinks."

        return self.hyperlinks

import urllib, sgmllib

# Get something to work with.
f = urllib.urlopen("http://www.openstreetmap.org/traces/tag/Birmingham/page/9")
s = f.read()

# Try and process the page.
# The class should have been defined first, remember.
myparser = MyParser()
myparser.parse(s)

# Get the hyperlinks.
links = myparser.get_hyperlinks()
working = []
final = []
traces = []
nonduplicates = []

for i in links:
	b = i.find("user")
	print i, b
	if b > 0:
		working.append(i)

for i in working:
	b = i.find("traces")
	print i, b
	if b > 0:
		final.append(i)

for i in final:
	parts = i.split("/")
	lastitem = len(parts)-1
	traces.append(parts[lastitem])

for i in traces:
	if i not in nonduplicates:
		nonduplicates.append(i)

for i in nonduplicates:	
	url = "http://www.openstreetmap.org/trace/" + i + "/data"
	print url
	trace = urllib.urlopen(url)
	localfile = open(i, "w")
	localfile.write(trace.read())
	trace.close()
	localfile.close()