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43 lines
1.2 KiB
Python
43 lines
1.2 KiB
Python
#!/usr/env python
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import sys
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import urllib2
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from xml.etree.ElementTree import ElementTree, fromstring
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def links_from_panoid(panoid):
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try:
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xml = urllib2.urlopen("http://cbk0.google.com/cbk?output=xml&panoid=%s"%panoid)
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except urllib2.HTTPError as e:
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exit(e.code + " " + e.msg)
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doc = fromstring(xml.read())
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return [link.get("pano_id") for link in doc.findall("annotation_properties/link")]
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if __name__ == "__main__":
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if len(sys.argv) != 2:
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exit("need to supply maximum number of positions")
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from_stdin = sys.stdin.readlines()
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if len(from_stdin) != 1:
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exit("only one initial pano_id expected on stdin")
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init_pano = from_stdin[0].strip()
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max_pos = int(sys.argv[1])
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result = set([init_pano])
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toprocess = [init_pano]
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# breadth first search
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while len(result) < max_pos and toprocess:
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newtoprocess = []
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for panoid in toprocess:
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if len(result) >= max_pos:
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break
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ids = links_from_panoid(panoid)
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for p in ids:
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if p not in result:
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newtoprocess.append(p)
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result.update(ids)
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toprocess = newtoprocess
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for p in result:
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print p
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