errorcode418/php

1<?php2/**3 * ua-parser4 *5 * Copyright (c) 2011-2012 Dave Olsen, http://dmolsen.com6 *7 * Released under the MIT license8 */9namespace UAParser\Util\Logfile;10 11use UAParser\Exception\ReaderException;12 13abstract class AbstractReader implements ReaderInterface14{15    /** @var ReaderInterface[] */16    private static $readers = array();17 18    /**19     * @param string $line20     * @return ReaderInterface21     */22    public static function factory($line)23    {24        foreach (static::getReaders() as $reader) {25            if ($reader->test($line)) {26                return $reader;27            }28        }29    }30 31    private static function getReaders()32    {33        if (static::$readers) {34            return static::$readers;35        }36 37        static::$readers[] = new ApacheCommonLogFormatReader();38 39        return static::$readers;40    }41 42    public function test($line)43    {44        $matches = $this->match($line);45 46        return isset($matches['userAgentString']);47    }48 49    public function read($line)50    {51        $matches = $this->match($line);52 53        if (!isset($matches['userAgentString'])) {54            throw ReaderException::userAgentParserError($line);55        }56 57        return $matches['userAgentString'];58    }59 60    protected function match($line)61    {62        if (preg_match($this->getRegex(), $line, $matches)) {63            return $matches;64        }65 66        return array();67    }68 69    abstract protected function getRegex();70}71