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require "sprockets"
module Blade::Assets
autoload :Builder, "blade/assets/builder"
extend self
def environment
@environment ||= Sprockets::Environment.new do |env|
env.cache = Sprockets::Cache::FileStore.new(Blade.tmp_path)
%w( blade user adapter ).each do |name|
send("#{name}_load_paths").each do |path|
env.append_path(path)
end
end
env.context_class.class_eval do
delegate :logical_paths, to: Blade::Assets
end
end
end
def build
if Blade.config.build
Builder.new(environment).build
end
end
def logical_paths(type = nil)
paths = Blade.config.logical_paths
paths.select! { |path| File.extname(path) == ".#{type}" } if type
paths
end
def blade_load_paths
[ Blade.root_path.join("assets") ]
end
def user_load_paths
Blade.config.load_paths.flat_map do |load_path|
if load_path.is_a?(Hash)
load_path.flat_map do |gem_name, paths|
Array(paths).map{ |path| gem_pathname(gem_name).join(path) }
end
else
Pathname.new(load_path)
end
end
end
def adapter_load_paths
gem_name = "blade-#{Blade.config.framework}_adapter"
[ gem_pathname(gem_name).join("assets") ]
end
def watch_logical_paths
@mtimes = get_mtimes
EM.add_periodic_timer(1) do
mtimes = get_mtimes
unless mtimes == @mtimes
@mtimes = mtimes
Blade.publish("/assets", changed: @mtimes)
end
end
end
private
def get_mtimes
{}.tap do |mtimes|
Blade.config.logical_paths.each do |path|
mtimes[path] = get_mtime(path)
end
end
end
def get_mtime(logical_path)
environment[logical_path].mtime
rescue Exception => e
e.to_s
end
def gem_pathname(gem_name)
gemspec = Gem::Specification.find_by_name(gem_name)
Pathname.new(gemspec.gem_dir)
end
end
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