import plugins from core and restructure repo

assets/Readme.rst

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+Asset management
+----------------
+
+This plugin allows you to use the `Webassets`_ module to manage assets such as
+CSS and JS files. The module must first be installed::
+
+    pip install webassets
+
+The Webassets module allows you to perform a number of useful asset management
+functions, including:
+
+* CSS minifier (``cssmin``, ``yui_css``, ...)
+* CSS compiler (``less``, ``sass``, ...)
+* JS minifier (``uglifyjs``, ``yui_js``, ``closure``, ...)
+
+Others filters include gzip compression, integration of images in CSS via data
+URIs, and more. Webassets can also append a version identifier to your asset
+URL to convince browsers to download new versions of your assets when you use
+far-future expires headers. Please refer to the `Webassets documentation`_ for
+more information.
+
+When used with Pelican, Webassets is configured to process assets in the
+``OUTPUT_PATH/theme`` directory. You can use Webassets in your templates by
+including one or more template tags. The Jinja variable ``{{ ASSET_URL }}`` can
+be used in templates and is relative to the ``theme/`` url. The
+``{{ ASSET_URL }}`` variable should be used in conjunction with the
+``{{ SITEURL }}`` variable in order to generate URLs properly. For example:
+
+.. code-block:: jinja
+
+    {% assets filters="cssmin", output="css/style.min.css", "css/inuit.css", "css/pygment-monokai.css", "css/main.css" %}
+        <link rel="stylesheet" href="{{ SITEURL }}/{{ ASSET_URL }}">
+    {% endassets %}
+
+... will produce a minified css file with a version identifier that looks like:
+
+.. code-block:: html
+
+    <link href="http://{SITEURL}/theme/css/style.min.css?b3a7c807" rel="stylesheet">
+
+These filters can be combined. Here is an example that uses the SASS compiler
+and minifies the output:
+
+.. code-block:: jinja
+
+    {% assets filters="sass,cssmin", output="css/style.min.css", "css/style.scss" %}
+        <link rel="stylesheet" href="{{ SITEURL }}/{{ ASSET_URL }}">
+    {% endassets %}
+
+Another example for Javascript:
+
+.. code-block:: jinja
+
+    {% assets filters="uglifyjs,gzip", output="js/packed.js", "js/jquery.js", "js/base.js", "js/widgets.js" %}
+        <script src="{{ SITEURL }}/{{ ASSET_URL }}"></script>
+    {% endassets %}
+
+The above will produce a minified and gzipped JS file:
+
+.. code-block:: html
+
+    <script src="http://{SITEURL}/theme/js/packed.js?00703b9d"></script>
+
+Pelican's debug mode is propagated to Webassets to disable asset packaging
+and instead work with the uncompressed assets.
+
+Many of Webasset's available compilers have additional configuration options
+(i.e. 'Less', 'Sass', 'Stylus', 'Closure_js').  You can pass these options to
+Webassets using the ``ASSET_CONFIG`` in your settings file.
+
+The following will handle Google Closure's compilation level and locate
+LessCSS's binary:
+
+.. code-block:: python
+
+    ASSET_CONFIG = (('closure_compressor_optimization', 'WHITESPACE_ONLY'),
+                    ('less_bin', 'lessc.cmd'), )
+
+.. _Webassets: https://github.com/miracle2k/webassets
+.. _Webassets documentation: http://webassets.readthedocs.org/en/latest/builtin_filters.html

assets/__init__.py

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+from .assets import *

assets/assets.py

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+# -*- coding: utf-8 -*-
+"""
+Asset management plugin for Pelican
+===================================
+
+This plugin allows you to use the `webassets`_ module to manage assets such as
+CSS and JS files.
+
+The ASSET_URL is set to a relative url to honor Pelican's RELATIVE_URLS
+setting. This requires the use of SITEURL in the templates::
+
+    <link rel="stylesheet" href="{{ SITEURL }}/{{ ASSET_URL }}">
+
+.. _webassets: https://webassets.readthedocs.org/
+
+"""
+from __future__ import unicode_literals
+
+import os
+import logging
+
+from pelican import signals
+from webassets import Environment
+from webassets.ext.jinja2 import AssetsExtension
+
+
+def add_jinja2_ext(pelican):
+    """Add Webassets to Jinja2 extensions in Pelican settings."""
+
+    pelican.settings['JINJA_EXTENSIONS'].append(AssetsExtension)
+
+
+def create_assets_env(generator):
+    """Define the assets environment and pass it to the generator."""
+
+    assets_url = 'theme/'
+    assets_src = os.path.join(generator.output_path, 'theme')
+    generator.env.assets_environment = Environment(assets_src, assets_url)
+
+    if 'ASSET_CONFIG' in generator.settings:
+        for item in generator.settings['ASSET_CONFIG']:
+            generator.env.assets_environment.config[item[0]] = item[1]
+
+    logger = logging.getLogger(__name__)
+    if logging.getLevelName(logger.getEffectiveLevel()) == "DEBUG":
+        generator.env.assets_environment.debug = True
+
+
+def register():
+    """Plugin registration."""
+
+    signals.initialized.connect(add_jinja2_ext)
+    signals.generator_init.connect(create_assets_env)