basic true / false sections

pystache/__init__.py

@@ -19,8 +19,24 @@ class Template(object):
         """Turns a Mustache template into something wonderful."""
         template = template or self.template
         context = context or self.context
+
+        template = self.render_sections(template, context)
         return self.render_tags(template, context)
 
+    def render_sections(self, template, context):
+        regexp = re.compile(r"{{\#([^\}]*)}}\s*(.+?){{/\1}}")
+        match = re.search(regexp, template)
+
+        while match:
+            section, section_name, inner = match.group(0, 1, 2)
+            if section_name in context and context[section_name]:
+                return template.replace(section, inner)
+            else:
+                return template.replace(section, '')
+            match = re.search(regexp, template)
+
+        return template
+
     def render_tags(self, template, context):
         """Renders all the tags in a template for a context."""
         regexp = re.compile(r"{{(#|=|!|<|>|\{)?(.+?)\1?}}+")

tests/test_pystache.py

@@ -21,7 +21,29 @@ class TestPystache(unittest.TestCase):
         ret = Pystache.render(template)
         self.assertEquals(ret, "What  what?")
 
-    def xtest_sections(self):
-        template = "I think {{name}} wants a {{thing}}, right {{name}}?"
-        ret = Pystache.render(template, { 'name': 'Jon', 'thing': 'racecar' })
-        self.assertEquals(ret, "I think Jon wants a racecar, right Jon?")
+    def test_false_sections_are_hidden(self):
+        template = "Ready {{#set}}set {{/set}}go!"
+        ret = Pystache.render(template, { 'set': False })
+        self.assertEquals(ret, "Ready go!")
+
+    def test_true_sections_are_shown(self):
+        template = "Ready {{#set}}set{{/set}} go!"
+        ret = Pystache.render(template, { 'set': True })
+        self.assertEquals(ret, "Ready set go!")
+
+    def aaxtest_sections(self):
+        template = """
+<ul>
+  {{#users}}
+    <li>{{name}}</li>
+  {{/users}}
+</ul>
+"""
+
+        context = { 'users': [ {'name': 'Chris'}, {'name': 'Tom'}, {'name': 'PJ'} ] }
+        ret = Pystache.render(template, context)
+        self.assertEquals(ret, """<ul>
+  <li>Chris</li>
+  <li>Tom</li>
+  <li>PJ</li>
+</ul>""")