handlebars.scala from files

HandlebarsHelper.scala

object HandlebarsHelper {
  def apply(baseuri: String): HandlebarsHelper = new HandlebarsHelper(baseuri)
}

class HandlebarsHelper(baseuri: String) extends Loggable {
  val EXTENSION = ".handlebars"

  def fromFile(fileName: String): Handlebars = 
    Handlebars(parse(getFileContents(baseuri + "/" + fileName).getOrElse("")))

  private def getFileContents(path: String): Option[String] = {
    val file = new File(path)

    if (file.exists()) {
      val source = Source.fromFile(path)
      try
        return Option(source.mkString)
      finally
        source.close()
    }

    warn("Could not parse file located at: " + path)
    Option.empty
  }

  /**
   * Recursively include partials. If the file cannot be found, do nothing.
   * @param template
   * @return
   */
  private def parse(template: String): String = {
    var combinedTemplate = template
    val Partial = """\{\{>\s?(.*)\}\}""".r

    Partial.findAllIn(template).foreach(p => p match {
      case Partial(file) => {
        getFileContents(baseuri + "/" + file + EXTENSION).map(contents => {
          combinedTemplate = combinedTemplate.replaceAllLiterally(p, parse(contents))
        })
      }
    })

    combinedTemplate.toString()
  }
}