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Rails CSS uploader/validator

/ Published in: Ruby
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  1. #!/usr/bin/env ruby
  2.  
  3. curl = `which curl 2>/dev/null`.chomp
  4. validator = 'http://jigsaw.w3.org/css-validator/validator'
  5.  
  6. # All warnings, CSS2, all mediums
  7. options = 'warning=2&profile=css2&usermedium=all'
  8.  
  9. base = File.expand_path("#{File.dirname(__FILE__)}/../../public/stylesheets")
  10.  
  11. # Got curl?
  12. raise "Curl not found" if curl.empty?
  13.  
  14. # Get path to stylesheets
  15. if ARGV.size > 0
  16.   base = ARGV.shift
  17. end
  18.  
  19. # All css files or just one?
  20. glob = base =~ /css$/ ? base : "#{base}/*.css"
  21.  
  22. # Do files
  23. Dir.glob(glob) do |file|
  24.  
  25.   next unless File.exists?( file )
  26.  
  27.   errors, warnings = [ ], [ ]
  28.  
  29.   # Send the css file to the validator
  30.   results = `#{curl} -s -F "file=@#{file}" -F "#{options}" #{validator}`
  31.  
  32.   # Validator couldn't find the file
  33.   #
  34.   # OR the file didn't have _any_ valid css content before
  35.   # the errors <- little gotcha
  36.   #
  37.   results.grep(/No style sheet found/) do |line|
  38.     STDERR << "#{$&}\n"
  39.     exit
  40.   end
  41.  
  42.   # Add new lines to <li></li> tags so grep can find them easier
  43.   results.gsub!(/\n/,'').gsub!(/<li>/,"\n<li>").gsub!(/<\/li>/,"</li>\n")
  44.  
  45.   results.grep(/<li>.*<\/li>/) do |line|
  46.  
  47.     # collect errors
  48.     line.grep(/<span class='error'>/) do |error|
  49.       errors << error.gsub!(/(<p>|<\/p>)/,"\n").gsub!(/<(.|\n)*?>/, '')
  50.     end
  51.  
  52.   end
  53.  
  54.   # collect warnings
  55.   results.grep(/<span class='warning'>/) do |line|
  56.     warnings << line.gsub!(/<(.|\n)*?>/, '')
  57.   end
  58.  
  59.   # Dump information to STDERR
  60.   STDERR << "CSS File #{file}:\n\n"
  61.  
  62.   { 'Errors' => errors, 'Warnings' => warnings }.each do |k,v|
  63.  
  64.     if v.empty?
  65.       STDERR << "No #{k.downcase} found\n---------------\n\n"
  66.     else
  67.       STDERR << "#{k} found:\n-------------\n\n"
  68.       v.each {|line| STDERR << line}
  69.     end
  70.  
  71.   end
  72.  
  73. end

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