[WIP] Macros (shortcodes) feature. (#371)

res/layouts/macros.twig

@@ -0,0 +1,9 @@
+{% macro youtube(id) %}
+<div style="position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden;">
+  <iframe src="//www.youtube.com/embed/{{ id }}?autoplay=1" style="position: absolute; top: 0; left: 0; width: 100%; height: 100%; border:0;" allowfullscreen title="YouTube Video"></iframe>
+</div>
+{% endmacro %}
+
+{% macro gist(user, id) %}
+<script type="application/javascript" src="//gist.github.com/{{ user }}/{{ id }}.js"></script>
+{% endmacro %}

res/layouts/page.content.twig

@@ -0,0 +1,2 @@
+{% set macros = "{% import 'macros.twig' as macro %}" %}
+{{ include(template_from_string(macros ~ page.content)) }}

src/Collection/Page/Page.php

@@ -139,6 +139,7 @@ public function __construct(SplFileInfo $file = null)
         }
         $this->setVariable('virtual', $this->virtual);
         $this->setVariable('published', true);
+        $this->setVariable('content_template', 'page.content.twig');
     }
 
     /**

src/Renderer/Twig.php

@@ -46,6 +46,7 @@ public function __construct($templatesPath, $config)
         // add extensions
         $this->twig->addExtension(new \Twig_Extension_Debug());
         $this->twig->addExtension(new TwigExtension($config->getOutputPath()));
+        $this->twig->addExtension(new \Twig_Extension_StringLoader());
         $this->twig->getExtension('Twig_Extension_Core')->setDateFormat($config->get('site.date.format'));
         $this->twig->getExtension('Twig_Extension_Core')->setTimezone($config->get('site.date.timezone'));
     }

tests/fixtures/website/content/Macros-and-variables/macros.md

@@ -0,0 +1,11 @@
+---
+title: Macros
+layout: macro.html
+---
+# Macros in Markdown
+
+## Youtube video
+{{ macro.youtube('NaB8JBfE7DY') }}
+
+## GitHub Gist
+{{ macro.gist('Narno', 'fbe791e05b93951ffc1f6abda8ee88f0') }}

tests/fixtures/website/content/Macros-and-variables/variables.md

@@ -0,0 +1,13 @@
+---
+title: Variables
+layout: macro.html
+var1: 'var 1'
+---
+# Variables in Markdown
+
+## Set and show
+{% set foo = 'bar' %}
+foo: `{{ foo }}`
+
+## FM variable
+page.var1: `{{ page.var1 }}`

tests/fixtures/website/layouts/macro.html.twig

@@ -0,0 +1,6 @@
+{% extends '_default/page.html.twig' %}
+
+{% block content %}
+{# page.content #}
+{% include page.content_template %}
+{% endblock %}