Module: ActionView::Helpers::AssetTagHelper

Defined in:
lib/cache-with-yuicompressor.rb

Instance Method Summary collapse

Instance Method Details

#write_asset_file_contents(joined_asset_path, asset_paths) ⇒ Object 



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# File 'lib/cache-with-yuicompressor.rb', line 4

def write_asset_file_contents(joined_asset_path, asset_paths)

  FileUtils.mkdir_p(File.dirname(joined_asset_path))
  File.atomic_write(joined_asset_path) { |cache| cache.write(join_asset_file_contents(asset_paths)) }

  begin
    # remove console.log calls 
    temp_file_path = joined_asset_path + ".tmp"
    f = File.open(joined_asset_path)
    fo = File.new(temp_file_path, "w")
    f.each {|line|
      fo.puts line.gsub(/console.(log|debug|info|warn|error|assert|dir|dirxml|trace|group|groupEnd|time|timeEnd|profile|profileEnd|count)\((.*)\);?/,"");
    }
    fo.close
    f.close

    # copy the file to the joined_asset_path
    system("cp #{temp_file_path} #{joined_asset_path}")

    # ask yui compressor to compress the file
    jarpath = File.dirname(__FILE__) + "/yuicompressor-2.4.2.jar";
    cmd = "java -jar #{jarpath} #{joined_asset_path} -o #{joined_asset_path}"
    ret = system(cmd)
  rescue
  end
  
  # Set mtime to the latest of the combined files to allow for
  # consistent ETag without a shared filesystem.
  mt = asset_paths.map { |p| File.mtime(asset_file_path(p)) }.max
  File.utime(mt, mt, joined_asset_path)
end