<?php
class Logger {
	private static $instance;
	private $adapter;

	public static $errornames = array(
		1			=> 'E_ERROR',
		2			=> 'E_WARNING',
		4			=> 'E_PARSE',
		8			=> 'E_NOTICE',
		16			=> 'E_CORE_ERROR',
		32			=> 'E_CORE_WARNING',
		64			=> 'E_COMPILE_ERROR',
		128		=> 'E_COMPILE_WARNING',
		256		=> 'E_USER_ERROR',
		512		=> 'E_USER_WARNING',
		1024		=> 'E_USER_NOTICE',
		2048		=> 'E_STRICT',
		4096		=> 'E_RECOVERABLE_ERROR',
		8192		=> 'E_DEPRECATED',
		16384		=> 'E_USER_DEPRECATED',
		32767		=> 'E_ALL');

	function log_error($errno, $errstr, $file, $line, $context) {
		if ($errno == E_NOTICE) return false;

		if ($this->adapter)
			return $this->adapter->log_error($errno, $errstr, $file, $line, $context);
		else
			return false;
	}

	function log($string, $context = "") {
		if ($this->adapter)
			return $this->adapter->log_error(E_USER_NOTICE, $string, '', 0, $context);
		else
			return false;
	}

	private function __clone() {
		//
	}

	function __construct() {
		switch (LOG_DESTINATION) {
		case "sql":
			$this->adapter = new Logger_SQL();
			break;
		case "syslog":
			$this->adapter = new Logger_Syslog();
			break;
		case "stdout":
			$this->adapter = new Logger_Stdout();
			break;
		default:
			$this->adapter = false;
		}
	}

	public static function get() {
		if (self::$instance == null)
			self::$instance = new self();

		return self::$instance;
	}

}