Source.php

<?php
/*
    This file is part of Erebot, a modular IRC bot written in PHP.

    Copyright © 2010 François Poirotte

    Erebot is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    Erebot is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with Erebot.  If not, see <http://www.gnu.org/licenses/>.
*/

namespace Erebot\Event\Match;

class Source implements \Erebot\Interfaces\Event\Match
{
    protected $source;

    public function __construct($source)
    {
        $this->setSource($source);
    }

    public function getSource()
    {
        return $this->source;
    }

    public function setSource($source)
    {
        if ($source !== null && !\Erebot\Utils::stringifiable($source)) {
            throw new \Erebot\InvalidValueException('Not a valid nickname');
        }

        $this->source = $source;
    }

    public function match(\Erebot\Interfaces\Event\Base\Generic $event)
    {
        if (!($event instanceof \Erebot\Interfaces\Event\Base\Source)) {
            return false;
        }

        if ($this->source === null) {
            return true;
        }

        $collator = $event->getConnection()->getCollator();
        return (
            $collator->compare(
                $event->getSource(),
                (string) $this->source
            ) == 0
        );
    }
}