74 lines
2.4 KiB
Ruby
Executable file
74 lines
2.4 KiB
Ruby
Executable file
# Extension namespace
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module Middleman::Extensions
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# The Cache Buster extension
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module CacheBuster
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# Setup extension
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class << self
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# Once registered
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def registered(app)
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# Add instance methods to context
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app.send :include, InstanceMethods
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# After compass is setup, make it use the registered cache buster
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app.compass_config do |config|
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config.asset_cache_buster do |path, real_path|
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real_path = real_path.path if real_path.is_a? File
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real_path = real_path.gsub(File.join(root, build_dir), source)
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if File.readable?(real_path)
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File.mtime(real_path).strftime("%s")
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else
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$stderr.puts "WARNING: '#{File.basename(path)}' was not found (or cannot be read) in #{File.dirname(real_path)}"
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end
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end
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end
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end
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alias :included :registered
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end
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# Cache buster instance methods
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module InstanceMethods
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# asset_url override if we're using cache busting
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# @param [String] path
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# @param [String] prefix
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def asset_url(path, prefix="")
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http_path = super
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if http_path.include?("://") || !%w(.css .png .jpg .jpeg .svg .svgz .js .gif).include?(File.extname(http_path))
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http_path
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else
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begin
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prefix = images_dir if prefix == http_images_path
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rescue
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end
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real_path_static = File.join(prefix, path)
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if build?
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real_path_dynamic = File.join(build_dir, prefix, path)
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real_path_dynamic = File.expand_path(real_path_dynamic, root)
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http_path << "?" + File.mtime(real_path_dynamic).strftime("%s") if File.readable?(real_path_dynamic)
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elsif resource = sitemap.find_resource_by_path(real_path_static)
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if !resource.template?
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http_path << "?" + File.mtime(resource.source_file).strftime("%s")
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else
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# It's a template, possible with partials. We can't really know when
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# it's updated, so generate fresh cache buster every time durin
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# developement
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http_path << "?" + Time.now.strftime("%s")
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end
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end
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http_path
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end
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end
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end
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end
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# Register the extension
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# register :cache_buster, CacheBuster
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end
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