xref: /plugin/struct/types/Url.php (revision c7273e8ec487f73f5c1524aab717508691a1d015) 
1<?php
2
3namespace dokuwiki\plugin\struct\types;
4
5use dokuwiki\plugin\struct\meta\ValidationException;
6
7class Url extends Text
8{
9
10    protected $config = array(
11        'autoscheme' => 'https',
12        'prefix' => '',
13        'postfix' => '',
14        'fixedtitle' => '',
15        'autoshorten' => true,
16    );
17
18    /**
19     * The final string should be an URL
20     *
21     * @param string $rawvalue
22     * @return int|string|void
23     */
24    public function validate($rawvalue)
25    {
26        $rawvalue = parent::validate($rawvalue);
27
28        $url = $this->buildURL($rawvalue);
29
30        $schemes = getSchemes();
31        $regex = '^(' . join('|', $schemes) . '):\/\/.+';
32        if (!preg_match("/$regex/i", $url)) {
33            throw new ValidationException('Url invalid', $url);
34        }
35
36        return $rawvalue;
37    }
38
39    /**
40     * @param string $value
41     * @param \Doku_Renderer $R
42     * @param string $mode
43     * @return bool
44     */
45    public function renderValue($value, \Doku_Renderer $R, $mode)
46    {
47        $url = $this->buildURL($value);
48        $title = $this->generateTitle($url);
49        $R->externallink($url, $title);
50        return true;
51    }
52
53    /**
54     * Make a label for the link
55     *
56     * @param $url
57     * @return string
58     */
59    protected function generateTitle($url) {
60        if($this->config['fixedtitle']) return $this->config['fixedtitle'];
61        if(!$this->config['autoshorten']) return $url;
62
63        $parsed = parse_url($url);
64
65        $title = $parsed['host'];
66        $title = preg_replace('/^www\./i', '', $title);
67        if(isset($parsed['path']) && $parsed['path'] === '/') {
68            unset($parsed['path']);
69        }
70        if(
71            isset($parsed['path']) ||
72            isset($parsed['query']) ||
73            isset($parsed['fragment'])
74        ) {
75            $title .= '/…';
76        }
77        return $title;
78    }
79
80    /**
81     * Creates the full URL and applies the autoscheme if needed
82     *
83     * @param string $value
84     * @return string
85     */
86    protected function buildURL($value)
87    {
88        $url = $this->config['prefix'] . trim($value) . $this->config['postfix'];
89
90        if (!preg_match('/\w+:\/\//', $url)) {
91            $url = $this->config['autoscheme'] . '://' . $url;
92        }
93
94        return $url;
95    }
96}
97