Benching fastest way to grab only the important part of the urls

propshaft-bench-normalize.rb

require 'benchmark/ips'

content = %(
  .prop 1 { background: url(file.jpg); }
  .prop 2 { background: url( file.jpg ); }
  .prop 3 { background: url("file.jpg"); }
  .prop 4 { background: url('file.jpg'); }
  .prop 5 { background: url('/file.jpg'); }
  .prop 6 { background: url('./file.jpg'); }
  .prop 7 { background: url('./images/file.jpg'); }
  .prop 8 { background: url('../file.jpg'); }
  .prop 9 { background: url('../../file.jpg'); }
  .prop 10 { background: url('../sibling/file.jpg'); }
  .prop 11 { mask-image: image(url(file.jpg), skyblue, linear-gradient(rgba(0, 0, 0, 1.0), transparent)); }
  .prop 12 { content: url(file.svg) url(file.svg); }
  .prop 13 { mask-image: url("file.svg#mask1"); }
  .prop 14 { background: url('https://rubyonrails.org/images/rails-logo.svg'); }
  .prop 15 { background: url(data:image/png;base64,iRxVB0…); }
  .prop 16 { background: url(#IDofSVGpath); }
)

Benchmark.ips do |x|
  x.config(time: 30, warmup: 2)

  x.report('baseline') do
    content.gsub(/url\(.*?\)/) do |match|
      match
    end
  end

  x.report('gsub_wildcard') do
    content.gsub(/url\(["']?\s*(.*?)["']?\s*\)/) do
      "url('#{$1}')"
    end
  end

  x.report('gsub_except') do
    content.gsub(/url\(\s*["']?([^"')]+)\s*["']?\)/) do
      "url('#{$1}')"
    end
  end

  x.report('delete') do
    content.gsub(/url\((.*?)\)/) do |match|
      "url('#{match.delete(" \"'")}')"
    end
  end
end