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1<?php
2
3/**
4 * No-op URL shortener (default version, does nothing).
5 *
6 * PHP version 8
7 *
8 * Copyright (C) Villanova University 2019.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2,
12 * as published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
22 *
23 * @category VuFind
24 * @package  UrlShortener
25 * @author   Demian Katz <demian.katz@villanova.edu>
26 * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
27 * @link     https://vufind.org/wiki/development Wiki
28 */
29
30namespace VuFind\UrlShortener;
31
32/**
33 * No-op URL shortener (default version, does nothing).
34 *
35 * @category VuFind
36 * @package  UrlShortener
37 * @author   Demian Katz <demian.katz@villanova.edu>
38 * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
39 * @link     https://vufind.org/wiki/development Wiki
40 */
41class None implements UrlShortenerInterface
42{
43    /**
44     * Dummy to return original URL version.
45     *
46     * @param string $url URL
47     *
48     * @return string
49     */
50    public function shorten($url)
51    {
52        return $url;
53    }
54
55    /**
56     * Dummy implementation. Resolving is not necessary because initial URL
57     * has not been shortened.
58     *
59     * @param string $id ID to resolve
60     *
61     * @return string
62     * @throws \Exception because this class is not meant to resolve shortlinks.
63     */
64    public function resolve($id)
65    {
66        throw new \Exception('UrlShortener None is unable to resolve shortlinks.');
67    }
68}