filthy short + simple parser for Config::General.pm style configs

config_general_parser.rb

#!/usr/bin/env ruby

file = ARGV.first

abort "Usage: #{File.basename($0)} file.conf" unless file

cfg = []
current_subtree = cfg
parent = cfg

open(file) do |io|
  until io.eof?
    line = io.readline
    next if line =~ /\s*#.*/
    next if line =~ /^\s*$/
    
    if line[0,1] == '<'
      if line[1,1] == '/'
        current_subtree = parent
        next
      else
        line = line[/<(.*)>/,1]
        parts = []
        while part = line.slice!(/(")[^"]+"|[^\s]+/)
          part = part[1..-2] if $1
          parts << part
        end
        parent = current_subtree
        subtree = []
        parent << [parts, subtree]
        current_subtree = subtree
      end
    else
      parts = []
      while part = line.slice!(/(")[^"]+"|[^\s]+/)
        part = part[1..-2] if $1
        parts << part
      end
      current_subtree << parts
    end
  end
  
end

require 'pp'
pp cfg