sdbus++: renderer post-processing lambda

Some of the calls to render were required to be prefixed with, for
example, 'str.strip' calls to remove extra newlines.  Add an optional
parameter to the renderer for post-processing of the rendered content.

Change-Id: Ibddbdf3a9b586df30cc55c76b39a8c8784fdaf18
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>

2 files changed, 5 insertions, 2 deletions

diff --git a/tools/sdbusplus/property.py b/tools/sdbusplus/property.py
index 869eef6..38edd3e 100644
--- a/tools/sdbusplus/property.py
+++ b/tools/sdbusplus/property.py
@@ -9,4 +9,5 @@ class Property(NamedElement, Renderer):
         super(Property, self).__init__(**kwargs)
 
     def markdown(self, loader):
-        return self.render(loader, "property.mako.md", property=self).strip()
+        return self.render(loader, "property.mako.md", property=self,
+                           post = str.strip)
diff --git a/tools/sdbusplus/renderer.py b/tools/sdbusplus/renderer.py
index 24e83c8..65541d4 100644
--- a/tools/sdbusplus/renderer.py
+++ b/tools/sdbusplus/renderer.py
@@ -4,4 +4,6 @@ class Renderer(object):
 
     def render(self, loader, template, **kwargs):
         t = loader.get_template(template)
-        return t.render(loader=loader, **kwargs)
+        post = kwargs.pop('post', lambda result: result)
+        r = t.render(loader=loader, **kwargs)
+        return post(r)