From 0b3483cf035009880a2a97d48537b000c9ea3bda Mon Sep 17 00:00:00 2001
From: Stoned Elipot <stoned.elipot@gmail.com>
Date: Wed, 3 Jul 2013 02:13:19 +0200
Subject: [PATCH] Add Jinja2 filter |bool : return boolean interpretation of
 the value

'yes', 'on', '1', 'true', insensitively, and 1 are true,
 everything else is false
---
 lib/ansible/runner/filter_plugins/core.py | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/lib/ansible/runner/filter_plugins/core.py b/lib/ansible/runner/filter_plugins/core.py
index 76c12e88dc..107c5e1fcb 100644
--- a/lib/ansible/runner/filter_plugins/core.py
+++ b/lib/ansible/runner/filter_plugins/core.py
@@ -19,6 +19,7 @@ import base64
 import json
 import os.path
 import yaml
+import types
 from ansible import errors
 
 def to_nice_yaml(*a, **kw):
@@ -49,6 +50,17 @@ def mandatory(a):
         raise errors.AnsibleError('Mandatory variable not defined.')
     return a
 
+def bool(a):
+    ''' return a bool for the arg '''
+    if a is None or type(a) == bool:
+        return a
+    if type(a) in types.StringTypes:
+        a = a.lower()
+    if a in ['yes', 'on', '1', 'true', 1]:
+        return True
+    else:
+        return False
+
 class FilterModule(object):
     ''' Ansible core jinja2 filters '''
 
@@ -78,5 +90,8 @@ class FilterModule(object):
 
             # variable existence
             'mandatory': mandatory,
+
+            # value as boolean
+            'bool': bool,
         }