AppLog.php

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<?php

namespace Combu;

class AppLog {

    private static $FilePath = null;
    private static $MaxFileSize = 0;

    public static function Initialize($filePath = null, $maxFileSize = null) {
        if ($filePath) {
            self::$FilePath = $filePath;
        } else if (defined('LOG_FILENAME')) {
            self::$FilePath = LOG_FOLDER . LOG_FILENAME;
        } else {
            self::$FilePath = LOG_FOLDER . "app.log";
        }
        if ($maxFileSize !== null) {
            self::$MaxFileSize = $maxFileSize;
        } else if (defined('LOG_MAXFILESIZE')) {
            self::$MaxFileSize = LOG_MAXFILESIZE;
        }
    }

    private static function WriteToFile($text) {
        $dir = dirname(self::$FilePath);
        if (!file_exists($dir) && is_writable(dirname($dir))) {
            try
            {
                mkdir($dir);
            } catch (Exception $ex) {
                
            }
        }
        if (file_exists($dir) && is_writable($dir)) {
            if (self::$MaxFileSize > 0) {
                if (@filesize(self::$FilePath) > self::$MaxFileSize) {
                    $ext = Utils::GetFilenameExtension(basename(self::$FilePath));
                    $suffix = "_" . date("d-m-Y_H-i-s") . $ext;
                    $bakFile = substr(self::$FilePath, 0, strlen($ext) - 1) . $suffix;
                    @rename(self::$FilePath, $bakFile);
                }
            }
            file_put_contents(self::$FilePath, $text, FILE_APPEND);
        }
    }

    private static function SanatizeText($log) {
        $text = $log;
        $text = str_replace("\n", " ", $text);
        $text = str_replace("\r", " ", $text);
        $text = str_replace("  ", " ", $text);
        $text = trim($text);
        return $text;
    }

    private static function AppendLog($prefix, $log) {
        global $AppId;
        $text = ($AppId->IsValid() ? "(" . $AppId->Name . ") " : "") .
                date("d/m/Y H:i:s") .
                " [$prefix] " .
                self::SanatizeText($log) .
                "\n";
        self::WriteToFile($text);
    }

    public static function Info($log) {
        self::AppendLog("INFO", $log);
    }

    public static function Warning($log) {
        self::AppendLog("WARNING", $log);
    }

    public static function Error($log) {
        self::AppendLog("ERROR", $log);
    }

}