Hpricot / nokogiri - Parse SVG / XML file to get colors used

Question

I need help in finding all colors used in an SVG (XML) file.

For example, i need the list of colors used in the image http://upload.wikimedia.org/wikipedia/commons/e/e9/Pepsi_logo_2008.svg

I was trying with hpricot / nokogiri gems to do something like,

--> doc.search("['fill:']") .. etc

But i am unable to get the proper result.

If there is any command line tool for linux like inkscape to get the colors it will be helpful.

Answer 1

Something like this should work:

require 'nokogiri'
require 'open-uri'

url = 'http://upload.wikimedia.org/wikipedia/commons/e/e9/Pepsi_logo_2008.svg'
doc = Nokogiri::HTML open(url)
puts doc.xpath('//*[contains(@style,"fill")]').map{|e| e[:style][/fill:([^;]*)/, 1]}.uniq