moved bit.ly code to a new library

plugins/util/web.py

@@ -0,0 +1,26 @@
+""" web.py - handy functions for web services """
+
+import http
+from urllib import urlencode
+
+
+class ShortenError(Exception):
+    def __init__(self, value):
+        self.value = value
+
+    def __str__(self):
+        return repr(self.value)
+
+
+def bitly(url, user, api_key):
+    """ shortens a URL with the bit.ly API """
+    if url[:8] == "https://":
+        pass
+    elif url[:7] != "http://":
+        url = "http://" + url
+    params = urlencode({'longUrl': url, 'login': user, 'apiKey': api_key,
+                        'format': 'json'})
+    j = http.get_json("http://api.bit.ly/v3/shorten?%s" % params)
+    if j['status_code'] == 200:
+        return j['data']['url']
+    raise ShortenError('%s' % j['status_txt'])