<?php

define('DEBUG_NONE',0);
define('DEBUG_LOG',1);
define('DEBUG_PUBLIC',2);
define('DEBUG_EXIT',3);

class Messages extends Framework {
  private $_messages=array();
  private $_debuglvl=DEBUG_LOG;
  private $_logfile;
  private $_logfilename='errors.log';

  public function __construct($logfilename='') {
    if ($logfilename != '') {
      $this->_logfilename = $logfilename;
    }
    $this->_logfile = fopen($this->_logfilename,'a');
  }

  public function __destruct() {
    fclose($this->_logfile);
  }

  public function setDebugLevel($debuglvl) {
    $this->_debuglvl = $debuglvl;
  }

  public function add($msg) {//{{{
    $this->_messages[] = $msg;
    switch ($this->_debuglvl) {
      case DEBUG_NONE:
        break;
      case DEBUG_EXIT:
      case DEBUG_PUBLIC:
        $this->printAll();
      case DEBUG_LOG:
        $this->writeLog($msg);
    }
    if ($this->_debuglvl == DEBUG_EXIT) {
      exit;
    }
  }//}}}

  public function printAll() {
    if ($this->toDisplay()) {
      foreach ($this->_messages as $m) {
        print('*** '.$m."\n");
      }
      $this->clear();
    }
  }

  public function toDisplay() {
    return (count($this->_messages) > 0);
  }

  public function clear() {
    $this->_messages = array();
  }

  private function writeLog($msg) {
    fwrite($this->_logfile,$msg."\n");
  }
}

?>