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<?php
/**
* @package J-BusinessDirectory
*
* @author CMSJunkie http://www.cmsjunkie.com/
* @copyright Copyright (C) 2007 - 2022 CMSJunkie. All rights reserved.
* @license https://www.gnu.org/licenses/agpl-3.0.en.html
*/
class Logger {
const DEBUG = 1; // Most Verbose
const INFO = 2; // ...
const WARN = 3; // ...
const ERROR = 4; // ...
const FATAL = 5; // Least Verbose
const OFF = 6; // Nothing at all.
const LOG_OPEN = 1;
const OPEN_FAILED = 2;
const LOG_CLOSED = 3;
/* Public members: Not so much of an example of encapsulation, but that's okay. */
public $Log_Status = Logger::LOG_CLOSED;
public $DateFormat = "Y-m-d G:i:s";
public $MessageQueue;
private $log_file;
private $priority = Logger::INFO;
private $file_handle;
private static $instance;
private function __construct($filepath, $priority) {
if ($priority == Logger::OFF) {
return;
}
$this->log_file = $filepath;
$this->MessageQueue = array();
$this->priority = $priority;
if (file_exists($this->log_file)) {
if (!is_writable($this->log_file)) {
$this->Log_Status = Logger::OPEN_FAILED;
$this->MessageQueue[] = "The file exists, but could not be opened for writing. Check that appropriate permissions have been set.";
return;
}
} else {
}
//dump($this->log_file);
if ($this->file_handle = fopen($this->log_file, "a")) {
$this->Log_Status = Logger::LOG_OPEN;
$this->MessageQueue[] = "The log file was opened successfully.";
} else {
$this->Log_Status = Logger::OPEN_FAILED;
$this->MessageQueue[] = "The file could not be opened. Check permissions.";
}
return;
}
public static function getInstance($filepath =0, $priority=0) {
if (!isset(self::$instance)) {
self::$instance = new Logger($filepath, $priority);
}
return self::$instance;
}
public function __destruct() {
if ($this->file_handle) {
fclose($this->file_handle);
}
}
public function LogInfo($line) {
$this->Log($line, Logger::INFO);
}
public function LogDebug($line) {
$this->Log($line, Logger::DEBUG);
}
public function LogWarn($line) {
$this->Log($line, Logger::WARN);
}
public function LogError($line) {
$this->Log($line, Logger::ERROR);
}
public function LogFatal($line) {
$this->Log($line, Logger::FATAL);
}
public function Log($line, $priority) {
if ($this->priority <= $priority) {
$status = $this->getTimeLine($priority);
$this->WriteFreeFormLine("$status $line \n");
}
}
public function WriteFreeFormLine($line) {
if ($this->Log_Status == Logger::LOG_OPEN && $this->priority != Logger::OFF) {
if (fwrite($this->file_handle, $line) === false) {
$this->MessageQueue[] = "The file could not be written to. Check that appropriate permissions have been set.";
}
}
}
private function getTimeLine($level) {
$time = date($this->DateFormat);
switch ($level) {
case Logger::INFO:
return "$time - INFO -->";
case Logger::WARN:
return "$time - WARN -->";
case Logger::DEBUG:
return "$time - DEBUG -->";
case Logger::ERROR:
return "$time - ERROR -->";
case Logger::FATAL:
return "$time - FATAL -->";
default:
return "$time - LOG -->";
}
}
}