xref: /dokuwiki/inc/Parsing/ParserMode/Acronym.php (revision be906b566b9bdfd92c032ee07c4fd077d820a8d1) 
1*be906b56SAndreas Gohr<?php
2*be906b56SAndreas Gohr
3*be906b56SAndreas Gohrnamespace dokuwiki\Parsing\ParserMode;
4*be906b56SAndreas Gohr
5*be906b56SAndreas Gohrclass Acronym extends AbstractMode
6*be906b56SAndreas Gohr{
7*be906b56SAndreas Gohr    // A list
8*be906b56SAndreas Gohr    protected $acronyms = array();
9*be906b56SAndreas Gohr    protected $pattern = '';
10*be906b56SAndreas Gohr
11*be906b56SAndreas Gohr    /**
12*be906b56SAndreas Gohr     * Acronym constructor.
13*be906b56SAndreas Gohr     *
14*be906b56SAndreas Gohr     * @param string[] $acronyms
15*be906b56SAndreas Gohr     */
16*be906b56SAndreas Gohr    public function __construct($acronyms)
17*be906b56SAndreas Gohr    {
18*be906b56SAndreas Gohr        usort($acronyms, array($this,'compare'));
19*be906b56SAndreas Gohr        $this->acronyms = $acronyms;
20*be906b56SAndreas Gohr    }
21*be906b56SAndreas Gohr
22*be906b56SAndreas Gohr    /** @inheritdoc */
23*be906b56SAndreas Gohr    public function preConnect()
24*be906b56SAndreas Gohr    {
25*be906b56SAndreas Gohr        if (!count($this->acronyms)) return;
26*be906b56SAndreas Gohr
27*be906b56SAndreas Gohr        $bound = '[\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]';
28*be906b56SAndreas Gohr        $acronyms = array_map(['\\dokuwiki\\Parsing\\Lexer\\Lexer', 'escape'], $this->acronyms);
29*be906b56SAndreas Gohr        $this->pattern = '(?<=^|'.$bound.')(?:'.join('|', $acronyms).')(?='.$bound.')';
30*be906b56SAndreas Gohr    }
31*be906b56SAndreas Gohr
32*be906b56SAndreas Gohr    /** @inheritdoc */
33*be906b56SAndreas Gohr    public function connectTo($mode)
34*be906b56SAndreas Gohr    {
35*be906b56SAndreas Gohr        if (!count($this->acronyms)) return;
36*be906b56SAndreas Gohr
37*be906b56SAndreas Gohr        if (strlen($this->pattern) > 0) {
38*be906b56SAndreas Gohr            $this->Lexer->addSpecialPattern($this->pattern, $mode, 'acronym');
39*be906b56SAndreas Gohr        }
40*be906b56SAndreas Gohr    }
41*be906b56SAndreas Gohr
42*be906b56SAndreas Gohr    /** @inheritdoc */
43*be906b56SAndreas Gohr    public function getSort()
44*be906b56SAndreas Gohr    {
45*be906b56SAndreas Gohr        return 240;
46*be906b56SAndreas Gohr    }
47*be906b56SAndreas Gohr
48*be906b56SAndreas Gohr    /**
49*be906b56SAndreas Gohr     * sort callback to order by string length descending
50*be906b56SAndreas Gohr     *
51*be906b56SAndreas Gohr     * @param string $a
52*be906b56SAndreas Gohr     * @param string $b
53*be906b56SAndreas Gohr     *
54*be906b56SAndreas Gohr     * @return int
55*be906b56SAndreas Gohr     */
56*be906b56SAndreas Gohr    protected function compare($a, $b)
57*be906b56SAndreas Gohr    {
58*be906b56SAndreas Gohr        $a_len = strlen($a);
59*be906b56SAndreas Gohr        $b_len = strlen($b);
60*be906b56SAndreas Gohr        if ($a_len > $b_len) {
61*be906b56SAndreas Gohr            return -1;
62*be906b56SAndreas Gohr        } elseif ($a_len < $b_len) {
63*be906b56SAndreas Gohr            return 1;
64*be906b56SAndreas Gohr        }
65*be906b56SAndreas Gohr
66*be906b56SAndreas Gohr        return 0;
67*be906b56SAndreas Gohr    }
68*be906b56SAndreas Gohr}
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