+
+def parurl(url, pars={}, **augment):
+ qs = parstring(pars, **augment)
+ if qs != "":
+ return url + "?" + qs
+ else:
+ return url
+
+# Wrap these, since binascii is a bit funky. :P
+def enhex(bs):
+ return base64.b16encode(bs).decode("us-ascii")
+def unhex(es):
+ if not isinstance(es, collections.ByteString):
+ try:
+ es = es.encode("us-ascii")
+ except UnicodeError:
+ raise binascii.Error("non-ascii character in hex-string")
+ return base64.b16decode(es)
+def enb32(bs):
+ return base64.b32encode(bs).decode("us-ascii")
+def unb32(es):
+ if not isinstance(es, collections.ByteString):
+ try:
+ es = es.encode("us-ascii")
+ except UnicodeError:
+ raise binascii.Error("non-ascii character in base32-string")
+ if (len(es) % 8) != 0:
+ es += b"=" * (8 - (len(es) % 8))
+ es = es.upper() # The whole point of Base32 is that it's case-insensitive :P
+ return base64.b32decode(es)
+def enb64(bs):
+ return base64.b64encode(bs).decode("us-ascii")
+def unb64(es):
+ if not isinstance(es, collections.ByteString):
+ try:
+ es = es.encode("us-ascii")
+ except UnicodeError:
+ raise binascii.Error("non-ascii character in base64-string")
+ if (len(es) % 4) != 0:
+ es += b"=" * (4 - (len(es) % 4))
+ return base64.b64decode(es)