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76 lines
2.5 KiB
Python
76 lines
2.5 KiB
Python
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# -*- coding: utf-8 -*-
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"""
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Asset management plugin for Pelican
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===================================
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This plugin allows you to use the `webassets`_ module to manage assets such as
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CSS and JS files.
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The ASSET_URL is set to a relative url to honor Pelican's RELATIVE_URLS
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setting. This requires the use of SITEURL in the templates::
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<link rel="stylesheet" href="{{ SITEURL }}/{{ ASSET_URL }}">
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.. _webassets: https://webassets.readthedocs.org/
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"""
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from __future__ import unicode_literals
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import os
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import logging
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from pelican import signals
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logger = logging.getLogger(__name__)
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try:
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import webassets
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from webassets import Environment
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from webassets.ext.jinja2 import AssetsExtension
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except ImportError:
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webassets = None
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def add_jinja2_ext(pelican):
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"""Add Webassets to Jinja2 extensions in Pelican settings."""
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if 'JINJA_ENVIRONMENT' in pelican.settings: # pelican 3.7+
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pelican.settings['JINJA_ENVIRONMENT']['extensions'].append(AssetsExtension)
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else:
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pelican.settings['JINJA_EXTENSIONS'].append(AssetsExtension)
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def create_assets_env(generator):
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"""Define the assets environment and pass it to the generator."""
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theme_static_dir = generator.settings['THEME_STATIC_DIR']
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assets_destination = os.path.join(generator.output_path, theme_static_dir)
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generator.env.assets_environment = Environment(
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assets_destination, theme_static_dir)
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if 'ASSET_CONFIG' in generator.settings:
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for item in generator.settings['ASSET_CONFIG']:
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generator.env.assets_environment.config[item[0]] = item[1]
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if 'ASSET_BUNDLES' in generator.settings:
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for name, args, kwargs in generator.settings['ASSET_BUNDLES']:
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generator.env.assets_environment.register(name, *args, **kwargs)
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if 'ASSET_DEBUG' in generator.settings:
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generator.env.assets_environment.debug = generator.settings['ASSET_DEBUG']
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elif logging.getLevelName(logger.getEffectiveLevel()) == "DEBUG":
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generator.env.assets_environment.debug = True
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for path in (generator.settings['THEME_STATIC_PATHS'] +
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generator.settings.get('ASSET_SOURCE_PATHS', [])):
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full_path = os.path.join(generator.theme, path)
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generator.env.assets_environment.append_path(full_path)
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def register():
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"""Plugin registration."""
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if webassets:
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signals.initialized.connect(add_jinja2_ext)
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signals.generator_init.connect(create_assets_env)
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else:
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logger.warning('`assets` failed to load dependency `webassets`.'
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'`assets` plugin not loaded.')
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