Last active
December 11, 2015 06:58
-
-
Save jamesmartin/4562865 to your computer and use it in GitHub Desktop.
The Flog score of your Rails ERB templates.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
require 'action_view' | |
require 'ostruct' | |
require 'erb' | |
require 'flog' | |
require 'ruby_parser' | |
require 'sexp_processor' | |
ERBHandler = ActionView::Template::Handlers::ERB.new | |
def new_template(body, details={format: :html}) | |
ActionView::Template.new(body, "irrelevant", details.fetch(:handler) {ERBHandler}, details) | |
end | |
def sort_by_combined_score(totals) | |
totals.sort do |a, b| | |
b[1].values.inject(&:+) <=> a[1].values.inject(&:+) | |
end | |
end | |
if $0 == __FILE__ | |
src_dir = ARGV[0] | |
raise ArgumentError, "Supply a path containing ERB templates" unless src_dir | |
puts "Contemplating ERB templates from: #{src_dir}" | |
erb_files = Dir.glob(File.join(src_dir, "**/*.erb")) | |
totals = erb_files.inject({}) do |totals, file| | |
erb_source = File.read(file) | |
ruby_source = ERBHandler.call(new_template(erb_source)) | |
sexp_parsed = RubyParser.new.parse(ruby_source) | |
flog = Flog.new | |
flog.process(sexp_parsed) | |
totals[file] = flog.totals | |
totals | |
end | |
sort_by_combined_score(totals).each do |filename, totals| | |
puts "#{filename} : #{totals}" | |
end | |
end |
Thanks for this. With the latest version of flog you need to call flog.calculate_total_scores
before calling flog.totals
. See here: http://docs.seattlerb.org/flog/Flog.html#method-i-calculate_total_scores
I've add the line in the fork here: https://gist.github.com/benjaminwood/9744892
Anybody know how to get the ruby source from a haml file? I've spent a bit of time on this already but couldn't figure it out. It'd be cool to run this against ERB and then again after converting to HAML and refactoring.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Keep in mind that templates can have multiple extension.
The order of these preprocessors is important. For example, if you called your JavaScript file app/assets/javascripts/projects.js.erb.coffee then it would be processed with the CoffeeScript interpreter first, which wouldn’t understand ERB and therefore you would run into problems.