$:.unshift File.dirname(__FILE__)

require 'rexml/document'
require 'template_runner'

module BuildMaster
  class TemplateException < Exception
  end
    
  class XTemplate
    def initialize(template_file)
      @template = REXML::Document.new(template_file)
    end
        
    def process(content, &evaluator)
      content_xml = REXML::Document.new(content)
      output_xml = process_xml(content_xml, &evaluator)
      return output_xml
    end
        
    private
    def process_xml(content_xml, &evaluator)
      result_xml = REXML::Document.new
      TemplateRunner.new(result_xml, @template, content_xml, &evaluator).process
      return result_xml
    end
  end
end