Adds Favicon support

Introduces a new optional config option FAVICON. The option points to
an icon present in STATIC_DIR and will be used as a favicon for the
HTML page.

blogstrap/blogstrap.py

@@ -64,6 +64,7 @@ class DefaultConfig(object):
     BLOGTITLE = "Powered by Blogstrap"
     DEFAULT_LANG = "en"
     NAVBAR_LINKS = []
+    STATIC_DIR = "images"
     TOC_BLACKLIST = []
 
 
@@ -80,7 +81,7 @@ def create_app(config_file=None):
         app.config.from_pyfile(config_file)
 
     # default static files directory
-    staticdir = app.config.get('STATIC_DIR', 'images')
+    staticdir = app.config.get('STATIC_DIR')
 
     def _render(template, message=None):
         ctx = context.context(app, message)

blogstrap/builder.py

@@ -38,6 +38,7 @@
 # NAVBAR_LINKS = {}   # key:value map of links to include in the Navbar.
 # TOC_BLACKLIST = []  # Exclude these pages from the TOC
 # STATIC_DIR = "images"
+# FAVICON = "favicon.ico"  # Located in the STATIC_DIR
 """
 
 HOMEPAGE_TEMPLATE = """# This page will be displayed at the blog root

blogstrap/context.py

@@ -30,10 +30,13 @@ def toc():
         "description": app.config['DESCRIPTION'],
         "lang": app.config['DEFAULT_LANG'],
         "navbar_links": app.config['NAVBAR_LINKS'],
+        "static_dir": app.config['STATIC_DIR'],
         "title": app.config['BLOGTITLE'],
         "toc": toc()
     }
     if message:
         context_dict['text'] = message['content']
         context_dict.update(message['metadata'])
+    if app.config.get("FAVICON"):
+        context_dict["favicon"] = app.config["FAVICON"]
     return context_dict

blogstrap/templates/base.html

@@ -10,6 +10,9 @@
     <meta property="og:url" content="" />
     <meta property="og:description" content="{{ description }}" />
     <title>{{ title }}</title>
+    {% if favicon %}
+    <link rel="icon" href="{{ static_dir }}/{{ favicon }}" type="image/x-icon">
+    {% endif %}
     <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
     <link rel="stylesheet" href="{{ url_for('static', filename='blogstrap.css') }}">
   </head>