80 lines
2.5 KiB
Ruby
80 lines
2.5 KiB
Ruby
|
require 'active_support/core_ext/file'
|
||
|
|
|
||
|
|
module ActionView
|
||
|
|
class AssetPaths #:nodoc:
|
||
|
|
attr_reader :config, :controller
|
||
|
|
|
||
|
|
def initialize(config, controller)
|
||
|
|
@config = config
|
||
|
|
@controller = controller
|
||
|
|
end
|
||
|
|
|
||
|
|
# Add the extension +ext+ if not present. Return full or scheme-relative URLs otherwise untouched.
|
||
|
|
# Prefix with <tt>/dir/</tt> if lacking a leading +/+. Account for relative URL
|
||
|
|
# roots. Rewrite the asset path for cache-busting asset ids. Include
|
||
|
|
# asset host, if configured, with the correct request protocol.
|
||
|
|
def compute_public_path(source, dir, ext = nil, include_host = true)
|
||
|
|
source = source.to_s
|
||
|
|
return source if is_uri?(source)
|
||
|
|
|
||
|
|
source = rewrite_extension(source, dir, ext) if ext
|
||
|
|
source = rewrite_asset_path(source, dir)
|
||
|
|
|
||
|
|
if controller && include_host
|
||
|
|
has_request = controller.respond_to?(:request)
|
||
|
|
source = rewrite_host_and_protocol(source, has_request)
|
||
|
|
end
|
||
|
|
|
||
|
|
source
|
||
|
|
end
|
||
|
|
|
||
|
|
def is_uri?(path)
|
||
|
|
path =~ %r{^[-a-z]+://|^cid:|^//}
|
||
|
|
end
|
||
|
|
|
||
|
|
private
|
||
|
|
|
||
|
|
def rewrite_extension(source, dir, ext)
|
||
|
|
raise NotImplementedError
|
||
|
|
end
|
||
|
|
|
||
|
|
def rewrite_asset_path(source, path = nil)
|
||
|
|
raise NotImplementedError
|
||
|
|
end
|
||
|
|
|
||
|
|
def rewrite_relative_url_root(source, relative_url_root)
|
||
|
|
relative_url_root && !source.starts_with?("#{relative_url_root}/") ? "#{relative_url_root}#{source}" : source
|
||
|
|
end
|
||
|
|
|
||
|
|
def rewrite_host_and_protocol(source, has_request)
|
||
|
|
source = rewrite_relative_url_root(source, controller.config.relative_url_root) if has_request
|
||
|
|
host = compute_asset_host(source)
|
||
|
|
if has_request && host && !is_uri?(host)
|
||
|
|
host = "#{controller.request.protocol}#{host}"
|
||
|
|
end
|
||
|
|
"#{host}#{source}"
|
||
|
|
end
|
||
|
|
|
||
|
|
# Pick an asset host for this source. Returns +nil+ if no host is set,
|
||
|
|
# the host if no wildcard is set, the host interpolated with the
|
||
|
|
# numbers 0-3 if it contains <tt>%d</tt> (the number is the source hash mod 4),
|
||
|
|
# or the value returned from invoking call on an object responding to call
|
||
|
|
# (proc or otherwise).
|
||
|
|
def compute_asset_host(source)
|
||
|
|
if host = config.asset_host
|
||
|
|
if host.respond_to?(:call)
|
||
|
|
case host.is_a?(Proc) ? host.arity : host.method(:call).arity
|
||
|
|
when 2
|
||
|
|
request = controller.respond_to?(:request) && controller.request
|
||
|
|
host.call(source, request)
|
||
|
|
else
|
||
|
|
host.call(source)
|
||
|
|
end
|
||
|
|
else
|
||
|
|
(host =~ /%d/) ? host % (source.hash % 4) : host
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|