configuration.rb

class Configuration
  
  def self.read_config
    configHash = {}
    config = self.get_config_file
    
    if File.exists?(config)
      f = File.open(config)
      begin
        while (line = f.readline)
          configHash = self.readline_into_hash(configHash, line)
        end  
      rescue EOFError
        f.close
      end     
    end
    configHash = self.set_defaults(configHash)
    configHash = self.convert_string_to_int(configHash)
    configHash
  end
  
  def self.get_config_file
    config = File.expand_path(File.join(File.dirname(__FILE__), 'config.app'))
  end
  
  def self.readline_into_hash(hash, line)
    pair = line.split(':')
    if pair.size > 0 
      hash[pair[0].strip] = pair[1].strip;
    end
    hash
  end  
  
  def self.set_defaults(hash)
    if not hash.has_key? 'number_to_tweet'
      hash['number_to_tweet'] = -1
    end
      
    if not hash.has_key? 'testing'
      hash['testing'] = false 
    end
    hash
  end
  
  def self.convert_string_to_int(hash)
    hash['number_to_tweet'] = hash['number_to_tweet'].to_i
    hash
  end
  
end