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fanstatic_resources.py
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fanstatic_resources.py
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# encoding: utf-8
import os.path
import sys
import logging
import ConfigParser
from fanstatic import Library, Resource, Group, get_library_registry
import fanstatic.core as core
# This imports patches fanstatic
import ckan.lib.fanstatic_extensions as fanstatic_extensions
log = logging.getLogger(__name__)
def min_path(path):
'''Return the .min.* filename for the given .js or .css file.
For example moo.js -> moo.min.js
'''
path, ext = os.path.splitext(path)
return path + '.min' + ext
def create_library(name, path, depend_base=True):
''' Creates a fanstatic library `name` with the contents of a
directory `path` using resource.config if found.'''
def get_resource(lib_name, resource_name):
''' Attempt to get the resource from the current lib or if not try
assume it is a fully qualified resource name. '''
try:
res = getattr(module, '%s/%s' % (lib_name, resource_name))
except AttributeError:
res = getattr(module, '%s' % resource_name)
return res
def create_resource(path, lib_name, count, inline=False):
''' create the fanstatic Resource '''
renderer = None
kw = {}
if not inline:
# resource_name is name of the file without the .js/.css
rel_path, filename = os.path.split(path)
filename = os.path.join(rel_path, filename)
path_min = min_path(os.path.join(resource_path, filename))
if os.path.exists(path_min):
kw['minified'] = min_path(filename)
if filename.endswith('.js'):
renderer = core.render_js
if path not in force_top:
kw['bottom'] = True
if filename.endswith('.css'):
renderer = core.render_css
core.set_resource_file_existence_checking(True)
else:
# This doesn't exist so stop fanstatic checking the filesystem
if path not in force_top:
kw['bottom'] = True
core.set_resource_file_existence_checking(False)
dependencies = []
if path in depends:
for dependency in depends[path]:
dependencies.append(get_resource(name, dependency))
if depend_base:
dependencies.append(getattr(module, 'base/main'))
if dependencies:
kw['depends'] = dependencies
if path in dont_bundle:
kw['dont_bundle'] = True
# IE conditionals
condition = None
other_browsers = False
if path in IE_conditionals:
other_browsers = ('others' in IE_conditionals[path])
condition = IE_conditionals[path][0]
if inline or condition:
kw['renderer'] = fanstatic_extensions.CkanCustomRenderer(
condition=condition,
script=inline,
renderer=renderer,
other_browsers=other_browsers)
resource = Resource(library, path, **kw)
# Add our customised ordering
if path in custom_render_order:
resource.order = custom_render_order[path]
resource.custom_order = count
# Update the attributes of the minified version of the resource to
# that of the parents as fanstatic does not pass these on.
update_attributes = ['custom_order', 'order', 'bottom', 'depends',
'dont_bundle', 'renderer']
if 'minified' in resource.modes:
min_res = resource.modes['minified']
for attribute in update_attributes:
setattr(min_res, attribute, getattr(resource, attribute))
# add the resource to this module
fanstatic_name = '%s/%s' % (lib_name, path)
setattr(module, fanstatic_name, resource)
return resource
resource_path = os.path.join(os.path.dirname(__file__), path)
library = Library(name, path)
module = sys.modules[__name__]
# config options
order = []
dont_bundle = []
force_top = []
depends = {}
groups = {}
IE_conditionals = {}
custom_render_order = {}
inline_scripts = {}
# parse the resource.config file if it exists
config_path = os.path.join(resource_path, 'resource.config')
if os.path.exists(config_path):
config = ConfigParser.RawConfigParser()
config.read(config_path)
if config.has_option('main', 'order'):
order = config.get('main', 'order').split()
if config.has_option('main', 'dont_bundle'):
dont_bundle = config.get('main', 'dont_bundle').split()
if config.has_option('main', 'force_top'):
force_top = config.get('main', 'force_top').split()
if config.has_section('depends'):
items = config.items('depends')
depends = dict((n, v.split()) for (n, v) in items)
if config.has_section('groups'):
items = config.items('groups')
groups = dict((n, v.split()) for (n, v) in items)
if config.has_section('custom render order'):
items = config.items('custom render order')
custom_render_order = dict((n, int(v)) for (n, v) in items)
if config.has_section('inline scripts'):
items = config.items('inline scripts')
inline_scripts = dict((n, v) for (n, v) in items)
if config.has_section('IE conditional'):
items = config.items('IE conditional')
for (n, v) in items:
files = v.split()
for f in files:
if f not in IE_conditionals:
IE_conditionals[f] = []
IE_conditionals[f].append(n)
# add dependencies for resources in groups
for group in groups:
if group in depends:
for resource in groups[group]:
if resource not in depends:
depends[resource] = []
for dep in depends[group]:
if dep not in groups:
dep_resources = [dep]
else:
dep_resources = groups[dep]
diff = [res for res in dep_resources if res not in depends[resource]]
depends[resource].extend(diff)
# process each .js/.css file found
resource_list = []
for dirname, dirnames, filenames in os.walk(resource_path):
for f in filenames:
rel_path = dirname[len(path):]
if rel_path:
rel_path = rel_path[1:]
filepath = os.path.join(rel_path, f)
filename_only, extension = os.path.splitext(f)
if extension in ('.css', '.js') and (
not filename_only.endswith('.min')):
resource_list.append(filepath)
# if groups are defined make sure the order supplied there is honored
for group in groups:
for resource in groups[group]:
if resource not in order:
# make sure any dependencies are met when we get to creating
# the resource
if resource in depends:
for dep in depends[resource]:
if dep not in order:
order.append(dep)
order.append(resource)
# add inline scripts
for inline in inline_scripts:
resource_list.append(inline)
if inline not in custom_render_order:
custom_render_order[inline] = 20
# order resource_list so that resources are created in the correct order
for resource_name in reversed(order):
if resource_name in resource_list:
resource_list.remove(resource_name)
resource_list.insert(0, resource_name)
# create the resources and keep them ordered as we define them.
count = 0
for resource_name in resource_list:
if resource_name in inline_scripts:
inline = inline_scripts[resource_name].strip()
else:
inline = None
create_resource(resource_name, name, count, inline=inline)
count += 1
# add groups
for group_name in groups:
members = []
for member in groups[group_name]:
fanstatic_name = '%s/%s' % (name, member)
members.append(getattr(module, fanstatic_name))
group = Group(members)
fanstatic_name = '%s/%s' % (name, group_name)
setattr(module, fanstatic_name, group)
# finally add the library to this module
setattr(module, name, library)
# add to fanstatic
registry = get_library_registry()
registry.add(library)
base_path = os.path.abspath(os.path.join(os.path.dirname(__file__),
'..', 'public', 'base'))
create_library('vendor', os.path.join(base_path, 'vendor'), depend_base=False)
create_library('base', os.path.join(base_path, 'javascript'),
depend_base=False)
create_library('datapreview', os.path.join(base_path, 'datapreview'),
depend_base=False)
create_library('css', os.path.join(base_path, 'css'), depend_base=False)