<?php

// Fast UA finder
// by BohwaZ <http://kd2.org/>
//
// Finds useful info from User-Agent header:
// - platform name and type (desktop/tv/mobile)
// - browser name and version (including weird stuff like Opera/9.80 Version/11.50)
// - engine name and version (useful!)

class Fast_UA_finder
{
    static protected $platforms = array(
        'mobile'    =>  'Maemo|Meego|iPhone|iPad|BlackBerry|Symbian|SymbOS|Series\s*60|S60|Android|Palm|Windows (?:CE|Phone|Mobile)|Kindle|Nokia|LGE|Vodafone|samsung|SonyEricsson|UP.browser|MIDP|J2ME|PDA|WAP',
        'tv'        =>  'Nintendo|Playstation|WebTV|GoogleTV',
        'desktop'   =>  'Linux|Win(?:dows)?(?: (?:XP|Vista|Me|95|98|NT [0-9.]+))?|Mac OS X|[a-z]+BSD|Amiga|Haiku|BeOS|OS/2|Mac|RISC OS|SunOS|Unix',
    );

    static protected $browsers = '(Opera)/9\.[89][0-9].* Version/(\d+(?:\.\d+)?)|(Opera Mobi)/.* Version/(\d+(?:\.\d+)?)|Version/(\d+(?:\.\d+)?).*(Safari)/|(Safari)/.*Version/(\d+(?:\.\d+)?)|(Blazer|Safari|Opera Mini|Iceape|Camino|Firefox|Epiphany|Chrome|Iceweasel|SeaMonkey|NetSurf|amaya|Arora|curl|Dillo|Elinks|Lynx|w3m|wget|Fennec|Flock|Galeon|iCab|Kazehakase|K-Meleon|Konqueror|Midori|NetPositive|Netscape|Omniweb|Opera|Songbird|Iron|WebPositive|AvantGo|Minimo|NetFront|Xiino|MSIE)[\s/](\d+(?:\.\d+)?)';

    static protected $engines = '(Gecko|Presto|WebKit|KHTML|Trident|NetSurf|Lynx|w3m|amaya|Dillo|ELinks)[/ ](\d+(?:\.\d+)?)';

    static public function getPlatform($str)
    {
        foreach (self::$platforms as $type=>$regexp)
        {
            if (preg_match('!('.$regexp.')!i', $str, $match))
            {
                return array(
                    'type'  =>  $type,
                    'name'  =>  strtolower($match[1]),
                );
            }
        }

        return false;
    }

    static public function getBrowser($str)
    {
        if (!preg_match('!'.self::$browsers.'!i', $str, $match))
            return false;

        unset($match[0]);

        $r = array('version' => null, 'name' => null);

        foreach ($match as $m)
        {
            if (preg_match('!^[\d.]+$!', $m))
                $r['version'] = $m;
            elseif (trim($m))
                $r['name'] = $m;

            if ($r['version'] && $r['name'])
                return $r;
        }

        return false;
    }

    static public function getEngine($str)
    {
        if (!preg_match('!'.self::$engines.'!i', $str, $match))
            return false;

        unset($match[0]);

        $r = array('version' => null, 'name' => null);

        foreach ($match as $m)
        {
            if (preg_match('!^[\d.]+$!', $m))
                $r['version'] = $m;
            elseif (trim($m))
                $r['name'] = $m;

            if ($r['version'] && $r['name'])
                return $r;
        }

        return false;
    }
}

?>