# HG changeset patch
# User Julien Cristau <julien.cristau@logilab.fr>
# Date 1413540898 -7200
# Node ID 0a49d61c8ccaf64d0165a8cfb91d4426b2be4fbe
# Parent  5907c2b0acd7e86e57e34e605077eba6992314e6
Add custom checker for Password values

We override the default converter to pass Binary values through, but
don't do anything about the checker.  This worked previously because
yams allowed StringIO instances, although its converter didn't do the
right thing for them.  Fixing this in yams requires that we properly
register a checker.

diff -r 5907c2b0acd7 -r 0a49d61c8cca __init__.py
--- a/__init__.py	Wed Oct 22 15:59:52 2014 +0200
+++ b/__init__.py	Fri Oct 17 12:14:58 2014 +0200
@@ -42,7 +42,7 @@
 
 from logilab.common.deprecation import deprecated
 from logilab.common.logging_ext import set_log_methods
-from yams.constraints import BASE_CONVERTERS
+from yams.constraints import BASE_CONVERTERS, BASE_CHECKERS
 
 # pre python 2.7.2 safety
 logging.basicConfig()
@@ -140,6 +140,10 @@
         return cPickle.loads(zlib.decompress(self.getvalue()))
 
 
+def check_password(eschema, value):
+    return isinstance(value, (str, Binary))
+BASE_CHECKERS['Password'] = check_password
+
 def str_or_binary(value):
     if isinstance(value, Binary):
         return value