my.cnf parser

parser.rb

  def self.parse_config(file)
    config = {}
    File.open(file).each_line do |line|
      line.strip!

      # skip lines with comments or blank lines
      next if /^\#/.match(line)
      next if /^\s*$/.match(line)

      # store which group in the config the line belongs to (e.g. [mysqld])
      if(/^\[(.+?)\]/.match(line))
          @group = $1
      end

      # match "'key' and 'key val'
      if(/^([\w\d\_\-]+)\s*([\w\d\_\-]+)$/.match(line))
        param, value = line.split(/\s+/, 2)
      # match 'key = val' or 'key=val' etc.
      elsif(/^(.+?)\s*[=]\s*(.+)$/.match(line))
        param, value = line.split(/\s*=\s*/, 2)
      end

      var_name = "#{param}".chomp.strip

      if value.nil?
        # variables without a declared value should be set to true
        new_value = true
      else
        value = value.chomp.strip

        if value =~ /^['"](.*)['"]$/
          new_value = $1
        else
          new_value = value
        end
      end

      if @group.nil?
        config["#{var_name}"] = new_value
      else
        config["#{@group}"] = {} if config["#{@group}"].nil?
        config["#{@group}"]["#{var_name}"] = new_value unless var_name.empty?
      end
    end

    return config
  end