--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/python/address.py	Thu Oct 15 11:41:26 2009 -0400
@@ -0,0 +1,68 @@
+#!/usr/bin/python
+
+import sys
+from states import *
+
+def validate_zipcode(zip, zip4=None):
+    """ validate a zipcode"""
+    
+    if not zip:
+        # a non-existant zip-code is a valid zipcode
+        # ... i think....
+        return True 
+
+    if '-' in zip: # in this case, split zip into zip5 + zip4
+        zip, zip4 = zip.split('-')
+
+    zdict = { 'zip5': zip, 'zip4': zip4 }
+        
+    # if the 4-digit extension exists, add it to zip
+    if zip4:
+        zip += '-' + zip4
+
+    # validate zip code format
+    for i in 5, 4:
+        zstring = 'zip' + str(i)
+        z = zdict.get(zstring, '')
+        if z:
+            if (not z.isdigit()) or (len(z) != i):
+                return False
+
+    return zip
+
+def normalizeaddress(query):
+    """ returns normalize address, if it is an address """
+
+    # normalize the address
+    query = ','.join([i.strip() for i in query.split('\n')])
+    querylist = [i.strip() for i in query.split(',')]
+    
+    lastentry = querylist[-1]
+    
+    if lastentry[-1].isdigit():
+        # it must be a zip code
+        if lastentry[1].isalpha():
+            querylist = querylist[:-1] + lastentry.split()
+        if not validate_zipcode(querylist[-1]):
+            return False
+        state = querylist[-2]
+    else:
+        state = querylist[-1]
+
+    if not getstate(state):
+        return False
+
+    return ', '.join(querylist)
+
+def address(query):
+    """ 
+    format an address 
+    -- query should be a string
+    """
+    
+if __name__ == '__main__':
+    i = normalizeaddress(' '.join(sys.argv[1:]))
+    if i:
+        print i
+    else:
+        print 'Not an address'