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1 | <?php |
2 | namespace Civi\Afform; | |
3 | ||
b853b419 TO |
4 | /** |
5 | * Class Symbols | |
6 | * @package Civi\Afform | |
7 | * | |
8 | * This class repesents a list of key symbols used by an | |
9 | * HTML document, such as element (tag) names, attribute | |
10 | * names, and CSS class names. | |
11 | */ | |
77dccccb TO |
12 | class Symbols { |
13 | ||
14 | /** | |
15 | * @var array | |
16 | * Array(string $element => int $count). | |
17 | */ | |
18 | public $elements = []; | |
19 | ||
20 | /** | |
21 | * @var array | |
22 | * Array(string $class => int $count). | |
23 | */ | |
24 | public $classes = []; | |
25 | ||
26 | /** | |
27 | * @var array | |
28 | * Array(string $attr => int $count). | |
29 | */ | |
30 | public $attributes = []; | |
31 | ||
32 | /** | |
33 | * @param string $html | |
34 | * @return static | |
35 | */ | |
36 | public static function scan($html) { | |
37 | $symbols = new static(); | |
38 | $doc = new \DOMDocumentWrapper($html, 'text/html'); | |
39 | $symbols->scanNode($doc->root); | |
40 | return $symbols; | |
41 | } | |
42 | ||
43 | protected function scanNode(\DOMNode $node) { | |
44 | if ($node instanceof \DOMElement) { | |
45 | ||
46 | self::increment($this->elements, $node->tagName); | |
47 | ||
48 | foreach ($node->childNodes as $childNode) { | |
49 | $this->scanNode($childNode); | |
50 | } | |
51 | ||
52 | foreach ($node->attributes as $attribute) { | |
53 | $this->scanNode($attribute); | |
54 | } | |
55 | } | |
56 | ||
57 | elseif ($node instanceof \DOMAttr) { | |
58 | self::increment($this->attributes, $node->nodeName); | |
59 | ||
60 | if ($node->nodeName === 'class') { | |
648f59bf | 61 | $classes = $this->parseClasses($node->nodeValue); |
77dccccb TO |
62 | foreach ($classes as $class) { |
63 | self::increment($this->classes, $class); | |
64 | } | |
65 | } | |
66 | } | |
67 | } | |
68 | ||
648f59bf TO |
69 | /** |
70 | * @param string $expr | |
71 | * Ex: 'crm-icon fa-mail' | |
72 | * @return array | |
73 | * Ex: ['crm-icon', 'fa-mail'] | |
74 | */ | |
75 | protected function parseClasses($expr) { | |
76 | if ($expr === '' || $expr === NULL || $expr === FALSE) { | |
77 | return []; | |
78 | } | |
79 | if (strpos($expr, '{{') === FALSE) { | |
80 | return explode(' ', $expr); | |
81 | } | |
82 | if (preg_match_all(';([a-zA-Z\-_]+|\{\{.*\}\}) ;U', "$expr ", $m)) { | |
83 | return $m[1]; | |
84 | } | |
85 | error_log("Failed to parse CSS classes: $expr"); | |
86 | return []; | |
87 | } | |
88 | ||
77dccccb TO |
89 | private static function increment(&$arr, $key) { |
90 | if (!isset($arr[$key])) { | |
91 | $arr[$key] = 0; | |
92 | } | |
93 | $arr[$key]++; | |
94 | } | |
95 | ||
96 | } |