IE Media Query Converter

IEMQConv.rb

#!/usr/bin/ruby

# IE Media Query Converter
# Usage: IEMQConv.rb filein fileout
# 
# Grabs all media query content in a CSS file and outputs a file
# containing all of the CSS without the media query tags.
# Useful for giving <=IE8 all of the site styles without
# media query support.

if(ARGV.length > 0 && File.file?(ARGV[0]))
   filein = ARGV[0]
   if(!filein =~ /.*?.css/i)
      raise "Input file must be a CSS file"
   end
else
   raise "Error: Must provide a CSS file to read"
end

if(ARGV.length > 1)
   fileout = ARGV[1]
else
   fileout = "ie.css"
end

cssLines = IO.readlines(filein)
count = 0
data = ""

for line in cssLines

   if(line =~ /@media only screen.*?\((.*?)\).*?\{/i)
      count += 1
   elsif(count > 0)
      line.split("").each do |i|
         if(i == "{")
            count += 1
         end
         if(i == "}")
            count -= 1
         end
         if(count > 0)
            data = data + i
         else
            break
         end
      end
   end
   
end

genfound = false
File.open(fileout, "a+") do |ieFile|
   ieFile.rewind
   ieFile.each do |line|      
      if(line =~ /\/\*\*\*GENERATED\*\*\*\//)
         ieFile.truncate(ieFile.pos)
         ieFile.puts("\n"+data)
         genfound = true
         break
      end
   end
   if(genfound == false) 
      ieFile.puts("/***GENERATED***/\n\n")
      ieFile.puts(data)
   end
end