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<?php
/**
* Device Detector - The Universal Device Detection library for parsing User Agents
*
* @link https://matomo.org
*
* @license http://www.gnu.org/licenses/lgpl.html LGPL v3 or later
*/
declare(strict_types=1);
namespace DeviceDetector\Parser;
/**
* Class Bot
*
* Parses a user agent for bot information
*
* Detected bots are defined in regexes/bots.yml
*/
class Bot extends AbstractBotParser
{
/**
* @var string
*/
protected $fixtureFile = 'regexes/bots.yml';
/**
* @var string
*/
protected $parserName = 'bot';
/**
* @var bool
*/
protected $discardDetails = false;
/**
* Enables information discarding
*/
public function discardDetails(): void
{
$this->discardDetails = true;
}
/**
* Parses the current UA and checks whether it contains bot information
*
* @see bots.yml for list of detected bots
*
* Step 1: Build a big regex containing all regexes and match UA against it
* -> If no matches found: return
* -> Otherwise:
* Step 2: Walk through the list of regexes in bots.yml and try to match every one
* -> Return the matched data
*
* If $discardDetails is set to TRUE, the Step 2 will be skipped
* $bot will be set to TRUE instead
*
* NOTE: Doing the big match before matching every single regex speeds up the detection
*
* @return array|null
*/
public function parse(): ?array
{
$result = null;
if ($this->preMatchOverall()) {
if ($this->discardDetails) {
return [true];
}
foreach ($this->getRegexes() as $regex) {
$matches = $this->matchUserAgent($regex['regex']);
if ($matches) {
unset($regex['regex']);
$result = $regex;
break;
}
}
}
return $result;
}
}