Made more error messages verbose.

j2tmpl/cli.py

@@ -55,7 +55,7 @@
 class PermissiveUndefined(Undefined):
     """
     A more permissive undefined that also also allows
-    __getattr__. This allows `default`to work across
+    __getattr__. This allows `default` to work across
     the entire complex object.
     """
     def __getattr__(self, name):
@@ -69,6 +69,9 @@ def read_file_filter(filename):
     Jinja filter that reads the contents of a file into the template
     given the filename.
     """
+    if isinstance(filename, Undefined):
+        return filename
+
     with open(filename) as f:
         return f.read()
 
@@ -82,6 +85,9 @@ def boolean_filter(value):
 
     Note that this is case insensitive.
     """
+    if isinstance(value, Undefined):
+        return value
+
     return str(value).lower() in ['true', 'yes', '1']
 
 
@@ -279,9 +285,6 @@ def main(argv):  # pragma: no cover
         render(args.template, args.output, build_template_context(os.environ), args)
     except TemplateSyntaxError:
         sys.exit(1)
-    except Exception:
-        print(str(sys.exc_info()[1]), file=sys.stderr)
-        sys.exit(1)
 
 
 if __name__ == "__main__":  # pragma: no cover

setup.py

@@ -51,7 +51,7 @@
 
 setup(
     name="j2tmpl",
-    version="0.0.7",
+    version="0.0.8",
     author="Ilya Kogan",
     author_email="[email protected]",
     url="https://github.com/ikogan/j2tmpl",

tests/templates/filters/boolean.jinja

@@ -15,3 +15,5 @@
 {% if test.boolean.no|boolean %}bad{% else %}cool{% endif %}
 
 {% if test.boolean.zero|boolean %}bad{% else %}cool{% endif %}
+
+{% if test.boolean.undefined|boolean %}bad{% else %}cool{% endif %}

tests/test_render.py

@@ -116,7 +116,6 @@ def test_error(common_environment, capsys):
 
 
 def test_single_line_error(common_environment, capsys):
-
     tmpfile = NamedTemporaryFile()
     templateFile = os.path.join(TEST_TEMPLATE_PATH, "single-line-error.jinja")