Module: Padrino::Contrib::Helpers::AssetsCompressor::Helpers

Defined in:
lib/padrino-contrib/helpers/assets_compressor.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/padrino-contrib/helpers/assets_compressor.rb', line 34

def self.included(base)
  base.alias_method_chain :javascript_include_tag, :compression
  base.alias_method_chain :stylesheet_link_tag, :compression
  base.alias_method_chain :asset_path, :compression
end

Instance Method Details

#asset_path_with_compression(kind, source) ⇒ Object 



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# File 'lib/padrino-contrib/helpers/assets_compressor.rb', line 133

def asset_path_with_compression(kind, source)
  file = asset_path_without_compression(kind, source)
  find_last_modified(file)
end

#assets_compressor(kind, sources) ⇒ Object 



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# File 'lib/padrino-contrib/helpers/assets_compressor.rb', line 71

def assets_compressor(kind, sources)
  options = sources.extract_options!.symbolize_keys
  bundle  = options.delete(:cache)
  return sources if bundle.nil?

  began_at = Time.now
  asset_folder = case kind
    when :css then 'stylesheets'
    when :js  then 'javascripts'
    else raise "YUI Compressor didn't support yet #{kind} compression"
  end

  bundle  = settings.app_name.downcase if bundle.is_a?(TrueClass)
  path    = Padrino.root("public", uri_root_path(asset_folder, bundle.to_s))

  # Detect changes
  stamps = sources.inject(0) do |memo, source|
    asset_path_without_compression(kind, source) =~ /\?(\d{10})$/
    memo += $1.to_i
    memo
  end

  bundle  = "#{bundle}.#{stamps}" if stamps > 0
  path    = Padrino.root("public", uri_root_path(asset_folder, bundle.to_s))
  path   += ".#{kind}" unless path =~ /\.#{kind}/

  # Back if no changes happens
  return bundle if File.exist?(path)

  # Clean old cached files
  Dir[path.gsub(/\.\d{10}\.#{kind}/, "*")].each { |file| FileUtils.rm_f(file) }

  # Get source code
  errors = []
  code = sources.map do |source|
    source = asset_path(kind, source).sub(/\?\d{10}$/, '') # Removes Timestamp
    begin
      source = source =~ /^http/ ? open(source) : File.read(Padrino.root("public", source))
    rescue Exception => e
      logger.error e.message
      errors << source
      next
    end
    # Removes extra comments
    if cs = source =~ /\/\*\!/
      cr = source.slice(cs, source.length)
      ce = cr =~ /\*\//
      cr = source.slice(cs, ce+2)
      source.sub!(cr,'')
    end
    source.each_line.reject { |l| l.strip == "" }.join
  end

  # Write the new bundled file
  Dir.mkdir(File.dirname(path)) unless File.exist?(File.dirname(path))
  File.open(path, "w") { |f| f.write(settings.compressor[kind].compress(code.join("\n"))) }
  logger.debug "Compressed (%0.2fms) %s" % [Time.now-began_at, path] if defined?(logger)

  # Return the updated bundle
  errors.unshift bundle
end

#cache_asset(file, options = {}, &block) ⇒ Object 



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# File 'lib/padrino-contrib/helpers/assets_compressor.rb', line 48

def cache_asset(file, options={}, &block)
  began_at  = Time.now
  kind      = File.extname(file).sub(/\./, '').to_sym
  original  = Dir[File.join(settings.views, file).sub(/#{kind}$/, "*")][0]
  mtime     = File.mtime(original).to_i
  file      = file.sub(/#{kind}$/, "#{mtime}.#{kind}")
  path      = Padrino.root("public", uri_root_path(file))

  if !File.exist?(path)
    source = block.call

    if options[:compress]
      source = settings.compressor[kind].compress(source)
    end

    Dir.mkdir(File.dirname(path)) unless File.exist?(File.dirname(path))
    File.open(path, "w") { |f| f.write(source) }
    logger.debug "Compressed (%0.2fms) %s" % [Time.now-began_at, path] if defined?(logger)
  end

  redirect file
end

#javascript_include_tag_with_compression(*sources) ⇒ Object 



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# File 'lib/padrino-contrib/helpers/assets_compressor.rb', line 40

def javascript_include_tag_with_compression(*sources)
  javascript_include_tag_without_compression(*assets_compressor(:js, sources))
end

#stylesheet_link_tag_with_compression(*sources) ⇒ Object 



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# File 'lib/padrino-contrib/helpers/assets_compressor.rb', line 44

def stylesheet_link_tag_with_compression(*sources)
  stylesheet_link_tag_without_compression(*assets_compressor(:css, sources))
end