php-unserializer unable to parse pipe/semi-colon formatted strings #2

  def parse(value: String): Map[String, Any] = {
    val map = new mutable.HashMap[String, Any]()
    var fieldStartIndex = 0
    var nextIndex = 0
    var pipeIndex = 0

    while (fieldStartIndex < value.length) {
      pipeIndex = value.indexOf('|', fieldStartIndex)
      // PHP Session Key
      val key: String = value.substring(fieldStartIndex, pipeIndex)
      nextIndex = value.indexOf('|', pipeIndex + 1)
      if (nextIndex == -1) {
        // Not found, we should be on the last key/value
        nextIndex = value.length - 1
        if (value.charAt(nextIndex) != ';') {
          Logger.warn(s"Session value does not end with ';' key $key may have parse error. Value: $value")
        }
      }
      else {
        // Pipe found, search backwards for semi-colon
        nextIndex = value.lastIndexOf(';', nextIndex)
      }

      // Looks like s:10:"Arlo White"; OR i:1234;
      val serializedValue = value.substring(pipeIndex + 1, nextIndex + 1)
      map.put(key, PhpUnserializer.parse(serializedValue))

      fieldStartIndex = nextIndex + 1
    }

    map.toMap
  }