HtmlStripHelper::handleAttributes() - Code Metrics - Inspection of "Merge pull request #6 from open-source-contributio..." - manuwhat/strip-tags - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( b02eb6...eeb8ae )

by Akpé Aurelle Emmanuel Moïse

created 2019-08-23 07:36 UTC

HtmlStripHelper::handleAttributes() A

↳ Parent: HtmlStripHelper

Complexity

Conditions	6
Paths	8

Size

Total Lines	21
Code Lines	14

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
cc	6
eloc	14
nc	8
nop	3
dl	0
loc	21
rs	9.2222
c	0
b	0
f	0

<?php

namespace EZAMA;

abstract class HtmlStripHelper
{
    const TAGS = 3;
    const ATTRIBUTES = 4;
    const TAGS_AND_ATTRIBUTES = 1;
    const TAGS_WITH_ATTRIBUTES = 2;

    protected $is_php = false;
    protected $is_html = false;
    protected $allowedTags = [];
    protected $allowedAttributes = [];
    protected $html = '';
    protected $doctype;
    protected $body;
    protected $head;
    protected $html_tag;
    protected static $events_attributes = [
    'onabort' => 1,
    'onafterprint' => 1,
    'onbeforeprint' => 1,
    'onbeforeunload' => 1,
    'onblur' => 1,
    'oncanplay' => 1,
    'oncanplaythrough' => 1,
    'onchange' => 1,
    'onclick' => 1,
    'oncontextmenu' => 1,
    'oncopy' => 1,
    'oncuechange' => 1,
    'oncut' => 1,
    'ondblclick' => 1,
    'ondrag' => 1,
    'ondragend' => 1,
    'ondragenter' => 1,
    'ondragleave' => 1,
    'ondragover' => 1,
    'ondragstart' => 1,
    'ondrop' => 1,
    'ondurationchange' => 1,
    'onemptied' => 1,
    'onended' => 1,
    'onerror' => 1,
    'onfocus' => 1,
    'onhashchange' => 1,
    'oninput' => 1,
    'oninvalid' => 1,
    'onkeydown' => 1,
    'onkeypress' => 1,
    'onkeyup' => 1,
    'onload' => 1,
    'onloadeddata' => 1,
    'onloadedmetadata' => 1,
    'onloadstart' => 1,
    'onmousedown' => 1,
    'onmousemove' => 1,
    'onmouseout' => 1,
    'onmouseover' => 1,
    'onmouseup' => 1,
    'onmousewheel' => 1,
    'onoffline' => 1,
    'ononline' => 1,
    'onpageshow' => 1,
    'onpaste' => 1,
    'onpause' => 1,
    'onplay' => 1,
    'onplaying' => 1,
    'onprogress' => 1,
    'onratechange' => 1,
    'onreset' => 1,
    'onresize' => 1,
    'onscroll' => 1,
    'onsearch' => 1,
    'onseeked' => 1,
    'onseeking' => 1,
    'onselect' => 1,
    'onstalled' => 1,
    'onsubmit' => 1,
    'onsuspend' => 1,
    'ontimeupdate' => 1,
    'ontoggle' => 1,
    'onunload' => 1,
    'onvolumechange' => 1,
    'onwaiting' => 1,
    'onwheel' => 1,
    ];

    protected static $attributes = [
    'accept' => 1,
    'accesskey' => 1,
    'action' => 1,
    'alt' => 1,
    'async' => 1,
    'autocomplete' => 1,
    'autofocus' => 1,
    'autoplay' => 1,
    'charset' => 1,
    'checked' => 1,
    'cite' => 1,
    'class' => 1,
    'cols' => 1,
    'colspan' => 1,
    'content' => 1,
    'contenteditable' => 1,
    'controls' => 1,
    'coords' => 1,
    'data' => 1,
    'datetime' => 1,
    'default' => 1,
    'defer' => 1,
    'dir' => 1,
    'dirname' => 1,
    'disabled' => 1,
    'download' => 1,
    'draggable' => 1,
    'dropzone' => 1,
    'enctype' => 1,
    'for' => 1,
    'form' => 1,
    'formaction' => 1,
    'headers' => 1,
    'height' => 1,
    'hidden' => 1,
    'high' => 1,
    'href' => 1,
    'hreflang' => 1,
    'http' => 1,
    'id' => 1,
    'ismap' => 1,
    'kind' => 1,
    'label' => 1,
    'lang' => 1,
    'list' => 1,
    'loop' => 1,
    'low' => 1,
    'max' => 1,
    'maxlength' => 1,
    'media' => 1,
    'method' => 1,
    'min' => 1,
    'multiple' => 1,
    'muted' => 1,
    'name' => 1,
    'novalidate' => 1,
    'onabort' => 1,
    'onafterprint' => 1,
    'onbeforeprint' => 1,
    'onbeforeunload' => 1,
    'onblur' => 1,
    'oncanplay' => 1,
    'oncanplaythrough' => 1,
    'onchange' => 1,
    'onclick' => 1,
    'oncontextmenu' => 1,
    'oncopy' => 1,
    'oncuechange' => 1,
    'oncut' => 1,
    'ondblclick' => 1,
    'ondrag' => 1,
    'ondragend' => 1,
    'ondragenter' => 1,
    'ondragleave' => 1,
    'ondragover' => 1,
    'ondragstart' => 1,
    'ondrop' => 1,
    'ondurationchange' => 1,
    'onemptied' => 1,
    'onended' => 1,
    'onerror' => 1,
    'onfocus' => 1,
    'onhashchange' => 1,
    'oninput' => 1,
    'oninvalid' => 1,
    'onkeydown' => 1,
    'onkeypress' => 1,
    'onkeyup' => 1,
    'onload' => 1,
    'onloadeddata' => 1,
    'onloadedmetadata' => 1,
    'onloadstart' => 1,
    'onmousedown' => 1,
    'onmousemove' => 1,
    'onmouseout' => 1,
    'onmouseover' => 1,
    'onmouseup' => 1,
    'onmousewheel' => 1,
    'onoffline' => 1,
    'ononline' => 1,
    'onpageshow' => 1,
    'onpaste' => 1,
    'onpause' => 1,
    'onplay' => 1,
    'onplaying' => 1,
    'onprogress' => 1,
    'onratechange' => 1,
    'onreset' => 1,
    'onresize' => 1,
    'onscroll' => 1,
    'onsearch' => 1,
    'onseeked' => 1,
    'onseeking' => 1,
    'onselect' => 1,
    'onstalled' => 1,
    'onsubmit' => 1,
    'onsuspend' => 1,
    'ontimeupdate' => 1,
    'ontoggle' => 1,
    'onunload' => 1,
    'onvolumechange' => 1,
    'onwaiting' => 1,
    'onwheel' => 1,
    'open' => 1,
    'optimum' => 1,
    'pattern' => 1,
    'placeholder' => 1,
    'poster' => 1,
    'preload' => 1,
    'readonly' => 1,
    'rel' => 1,
    'required' => 1,
    'reversed' => 1,
    'rows' => 1,
    'rowspan' => 1,
    'sandbox' => 1,
    'scope' => 1,
    'selected' => 1,
    'shape' => 1,
    'size' => 1,
    'sizes' => 1,
    'span' => 1,
    'spellcheck' => 1,
    'src' => 1,
    'srcdoc' => 1,
    'srclang' => 1,
    'source' => 1,
    'start' => 1,
    'step' => 1,
    'style' => 1,
    'tabindex' => 1,
    'target' => 1,
    'title' => 1,
    'translate' => 1,
    'type' => 1,
    'usemap' => 1,
    'value' => 1,
    'width' => 1,
    'wrap' => 1,
];
    protected static $special_tags = ['<doctypetag>' => '<!doctype>', '<htmltag>' => '<html>', '<headtag>' => '<head>', '<htmltag>' => '<html>', '<bodytag>' => '<body>'];
    protected static $tags = [
    '<php>' => 1,
    '<!-- -->' => 1,
    '<doctypetag>' => 1,
    '<a>' => 1,
    '<abbr>' => 1,
    '<acronym>' => 1,
    '<address>' => 1,
    '<applet>' => 1,
    '<embed>' => 1,
    '<object>' => 1,
    '<area>' => 1,
    '<article>' => 1,
    '<aside>' => 1,
    '<audio>' => 1,
    '<b>' => 1,
    '<base>' => 1,
    '<basefont>' => 1,
    '<bdi>' => 1,
    '<bdo>' => 1,
    '<big>' => 1,
    '<blockquote>' => 1,
    '<bodytag>' => 1,
    '<br>' => 1,
    '<button>' => 1,
    '<canvas>' => 1,
    '<caption>' => 1,
    '<center>' => 1,
    '<cite>' => 1,
    '<code>' => 1,
    '<col>' => 1,
    '<colgroup>' => 1,
    '<data>' => 1,
    '<datalist>' => 1,
    '<dd>' => 1,
    '<del>' => 1,
    '<details>' => 1,
    '<dfn>' => 1,
    '<dialog>' => 1,
    '<dir>' => 1,
    '<ul>' => 1,
    '<div>' => 1,
    '<dl>' => 1,
    '<dt>' => 1,
    '<em>' => 1,
    '<fieldset>' => 1,
    '<figcaption>' => 1,
    '<figure>' => 1,
    '<font>' => 1,
    '<footer>' => 1,
    '<form>' => 1,
    '<frame>' => 1,
    '<frameset>' => 1,
    '<h1>' => 1,
    '<h2>' => 1,
    '<h3>' => 1,
    '<h5>' => 1,
    '<h6>' => 1,
    '<hn>' => 1,
    '<headtag>' => 1,
    '<header>' => 1,
    '<hr>' => 1,
    '<htmltag>' => 1,
    '<i>' => 1,
    '<iframe>' => 1,
    '<img>' => 1,
    '<input>' => 1,
    '<ins>' => 1,
    '<kbd>' => 1,
    '<label>' => 1,
    '<legend>' => 1,
    '<li>' => 1,
    '<link>' => 1,
    '<main>' => 1,
    '<map>' => 1,
    '<mark>' => 1,
    '<meta>' => 1,
    '<meter>' => 1,
    '<nav>' => 1,
    '<noframes>' => 1,
    '<noscript>' => 1,
    '<ol>' => 1,
    '<optgroup>' => 1,
    '<option>' => 1,
    '<output>' => 1,
    '<p>' => 1,
    '<param>' => 1,
    '<picture>' => 1,
    '<pre>' => 1,
    '<progress>' => 1,
    '<q>' => 1,
    '<rp>' => 1,
    '<rt>' => 1,
    '<ruby>' => 1,
    '<s>' => 1,
    '<samp>' => 1,
    '<script>' => 1,
    '<section>' => 1,
    '<select>' => 1,
    '<small>' => 1,
    '<source>' => 1,
    '<span>' => 1,
    '<strike>' => 1,
    '<strong>' => 1,
    '<style>' => 1,
    '<sub>' => 1,
    '<summary>' => 1,
    '<sup>' => 1,
    '<svg>' => 1,
    '<table>' => 1,
    '<tbody>' => 1,
    '<td>' => 1,
    '<template>' => 1,
    '<textarea>' => 1,
    '<tfoot>' => 1,
    '<th>' => 1,
    '<thead>' => 1,
    '<time>' => 1,
    '<title>' => 1,
    '<tr>' => 1,
    '<track>' => 1,
    '<tt>' => 1,
    '<u>' => 1,
    '<var>' => 1,
    '<video>' => 1,
    '<wbr>' => 1,
];

    protected function loadHTML($html)
    {
        if (!strlen($html)) {
            throw new \InvalidArgumentException('Empty string given');
        }
        $xml = new \DOMDocument();
        //Suppress warnings: proper error handling is beyond scope of example
        libxml_use_internal_errors(true);

        $true = $xml->loadHTML($html, LIBXML_HTML_NOIMPLIED | LIBXML_HTML_NODEFDTD);
        if ($true) {
            $this->html = $xml;
        }
    }

    protected function handleTags($notAllowedTags, $callback, $callback1)
    {
        if (!is_array($notAllowedTags)) {
            return false;
        }
        if (count($notAllowedTags) !== 2) {
            return false;
        }
        $notAllowedTags = array_values($notAllowedTags);
        $keep = (bool)$notAllowedTags[1];
        $notAllowedTags = $notAllowedTags[0];
        if (is_string($notAllowedTags)) {
            $notAllowedTags = explode(',', $notAllowedTags);
        }
        if (is_array($notAllowedTags)) {
            self::checkSpecialTags($notAllowedTags);
            $notAllowedTags = array_filter(array_map($callback, $notAllowedTags), $callback1);
            $this->allowedTags = !$keep ? array_fill_keys($notAllowedTags, 1) : array_diff_key(self::$tags, array_flip($notAllowedTags));
        } else {
            return false;
        }

        return true;
    }

    protected static function checkSpecialTags(&$notAllowedTags)
    {
        foreach (self::$special_tags as $fakeTag => $trueTag) {
            if (false !== $key = array_search($trueTag, $notAllowedTags, true)) {
                $notAllowedTags[$key] = $fakeTag;
            }
        }
    }

    protected function handleAttributes($notAllowedAttributes, $callback, $callback2)
    {
        if (!is_array($notAllowedAttributes)) {
            return false;
        }
        if (count($notAllowedAttributes) !== 2) {
            return false;
        }
        $keep = (bool)$notAllowedAttributes[1];
        $notAllowedAttributes = $notAllowedAttributes[0];
        if (is_string($notAllowedAttributes)) {
            $notAllowedAttributes = explode(',', $notAllowedAttributes);
        }
        if (is_array($notAllowedAttributes)) {
            $notAllowedAttributes = array_filter(array_map($callback, $notAllowedAttributes), $callback2);
            $this->allowedAttributes = !$keep ? array_fill_keys($notAllowedAttributes, 1) : array_diff_key(self::$attributes, array_flip($notAllowedAttributes));
        } else {
            return false;
        }

        return true;
    }

    protected static function handlePhp($is_php, $domDoc, &$allowed_tags)
    {
        $result = $domDoc->saveHTML();
        self::handleMainHtmlTags($result, $allowed_tags);

        return substr(($is_php && isset($allowed_tags['<php>'])) ?
        str_replace(['<php>', '</php>'], ['<?php ', '?>'], $result) : $result, stripos($result, '<div>') + 5, -7);
    }

    protected static function handleMainHtmlTags(&$result, &$allowed_tags)
    {
        $result = str_replace(
            ['<doctypetag', '</doctypetag>', '<headtag', '</headtag', '<htmltag', '</htmltag', '<bodytag', '</bodytag'],
            ['<!doctype', '', '<head', '</head', '<html', '</html', '<body', '</body'],
            $result
                        );
        if (!isset($allowed_tags['<doctypetag>'])) {
            $doctypeOffset = stripos($result, '<!doctype');
            $result = str_replace(substr($result, $doctypeOffset, strpos($result, '>', $doctypeOffset) + 1 - $doctypeOffset), '', $result);
        }
    }

    protected static function handleComments($domDoc, &$allowed_tags)
    {
        if (!isset($allowed_tags['<!-- -->'])) {
            $xpath = new \DOMXPath($domDoc);
            $DomComments = $xpath->query('//comment()');
            foreach ($DomComments as $DomComment) {
                $DomComment->parentNode->removeChild($DomComment);
            }
        }
    }

    protected static function stripAttributes($tag, &$allowed_attrs, $type = 1)
    {
        if ($tag instanceof \DOMElement) {
            if ($type === 2) {
                self:: stripAttributesTypeTwo($tag, $allowed_attrs);
            } else {
                self::stripAttributesTypeOne($tag, $allowed_attrs);
            }
        }
    }

    protected static function stripAttributesTypeOne($tag, &$allowed_attrs)
    {
        foreach (iterator_to_array($tag->attributes) as $attr) {
            if (!isset($allowed_attrs[$attr->nodeName])) {
                $tag->removeAttribute($attr->nodeName);
            }
        }
    }

    protected static function stripAttributesTypeTwo($tag, &$allowed_attrs)
    {
        foreach (iterator_to_array($tag->attributes) as $attr) {
            if (!isset($allowed_attrs[$attr->nodeName])) {
                if ($tag->parentNode) {
                    $tag->parentNode->removeChild($tag);
                }
            }
        }
    }
}


1			<?php
2
3			namespace EZAMA;
4
5			abstract class HtmlStripHelper
6			{
7			const TAGS = 3;
8			const ATTRIBUTES = 4;
9			const TAGS_AND_ATTRIBUTES = 1;
10			const TAGS_WITH_ATTRIBUTES = 2;
11
12			protected $is_php = false;
13			protected $is_html = false;
14			protected $allowedTags = [];
15			protected $allowedAttributes = [];
16			protected $html = '';
17			protected $doctype;
18			protected $body;
19			protected $head;
20			protected $html_tag;
21			protected static $events_attributes = [
22			'onabort' => 1,
23			'onafterprint' => 1,
24			'onbeforeprint' => 1,
25			'onbeforeunload' => 1,
26			'onblur' => 1,
27			'oncanplay' => 1,
28			'oncanplaythrough' => 1,
29			'onchange' => 1,
30			'onclick' => 1,
31			'oncontextmenu' => 1,
32			'oncopy' => 1,
33			'oncuechange' => 1,
34			'oncut' => 1,
35			'ondblclick' => 1,
36			'ondrag' => 1,
37			'ondragend' => 1,
38			'ondragenter' => 1,
39			'ondragleave' => 1,
40			'ondragover' => 1,
41			'ondragstart' => 1,
42			'ondrop' => 1,
43			'ondurationchange' => 1,
44			'onemptied' => 1,
45			'onended' => 1,
46			'onerror' => 1,
47			'onfocus' => 1,
48			'onhashchange' => 1,
49			'oninput' => 1,
50			'oninvalid' => 1,
51			'onkeydown' => 1,
52			'onkeypress' => 1,
53			'onkeyup' => 1,
54			'onload' => 1,
55			'onloadeddata' => 1,
56			'onloadedmetadata' => 1,
57			'onloadstart' => 1,
58			'onmousedown' => 1,
59			'onmousemove' => 1,
60			'onmouseout' => 1,
61			'onmouseover' => 1,
62			'onmouseup' => 1,
63			'onmousewheel' => 1,
64			'onoffline' => 1,
65			'ononline' => 1,
66			'onpageshow' => 1,
67			'onpaste' => 1,
68			'onpause' => 1,
69			'onplay' => 1,
70			'onplaying' => 1,
71			'onprogress' => 1,
72			'onratechange' => 1,
73			'onreset' => 1,
74			'onresize' => 1,
75			'onscroll' => 1,
76			'onsearch' => 1,
77			'onseeked' => 1,
78			'onseeking' => 1,
79			'onselect' => 1,
80			'onstalled' => 1,
81			'onsubmit' => 1,
82			'onsuspend' => 1,
83			'ontimeupdate' => 1,
84			'ontoggle' => 1,
85			'onunload' => 1,
86			'onvolumechange' => 1,
87			'onwaiting' => 1,
88			'onwheel' => 1,
89			];
90
91			protected static $attributes = [
92			'accept' => 1,
93			'accesskey' => 1,
94			'action' => 1,
95			'alt' => 1,
96			'async' => 1,
97			'autocomplete' => 1,
98			'autofocus' => 1,
99			'autoplay' => 1,
100			'charset' => 1,
101			'checked' => 1,
102			'cite' => 1,
103			'class' => 1,
104			'cols' => 1,
105			'colspan' => 1,
106			'content' => 1,
107			'contenteditable' => 1,
108			'controls' => 1,
109			'coords' => 1,
110			'data' => 1,
111			'datetime' => 1,
112			'default' => 1,
113			'defer' => 1,
114			'dir' => 1,
115			'dirname' => 1,
116			'disabled' => 1,
117			'download' => 1,
118			'draggable' => 1,
119			'dropzone' => 1,
120			'enctype' => 1,
121			'for' => 1,
122			'form' => 1,
123			'formaction' => 1,
124			'headers' => 1,
125			'height' => 1,
126			'hidden' => 1,
127			'high' => 1,
128			'href' => 1,
129			'hreflang' => 1,
130			'http' => 1,
131			'id' => 1,
132			'ismap' => 1,
133			'kind' => 1,
134			'label' => 1,
135			'lang' => 1,
136			'list' => 1,
137			'loop' => 1,
138			'low' => 1,
139			'max' => 1,
140			'maxlength' => 1,
141			'media' => 1,
142			'method' => 1,
143			'min' => 1,
144			'multiple' => 1,
145			'muted' => 1,
146			'name' => 1,
147			'novalidate' => 1,
148			'onabort' => 1,
149			'onafterprint' => 1,
150			'onbeforeprint' => 1,
151			'onbeforeunload' => 1,
152			'onblur' => 1,
153			'oncanplay' => 1,
154			'oncanplaythrough' => 1,
155			'onchange' => 1,
156			'onclick' => 1,
157			'oncontextmenu' => 1,
158			'oncopy' => 1,
159			'oncuechange' => 1,
160			'oncut' => 1,
161			'ondblclick' => 1,
162			'ondrag' => 1,
163			'ondragend' => 1,
164			'ondragenter' => 1,
165			'ondragleave' => 1,
166			'ondragover' => 1,
167			'ondragstart' => 1,
168			'ondrop' => 1,
169			'ondurationchange' => 1,
170			'onemptied' => 1,
171			'onended' => 1,
172			'onerror' => 1,
173			'onfocus' => 1,
174			'onhashchange' => 1,
175			'oninput' => 1,
176			'oninvalid' => 1,
177			'onkeydown' => 1,
178			'onkeypress' => 1,
179			'onkeyup' => 1,
180			'onload' => 1,
181			'onloadeddata' => 1,
182			'onloadedmetadata' => 1,
183			'onloadstart' => 1,
184			'onmousedown' => 1,
185			'onmousemove' => 1,
186			'onmouseout' => 1,
187			'onmouseover' => 1,
188			'onmouseup' => 1,
189			'onmousewheel' => 1,
190			'onoffline' => 1,
191			'ononline' => 1,
192			'onpageshow' => 1,
193			'onpaste' => 1,
194			'onpause' => 1,
195			'onplay' => 1,
196			'onplaying' => 1,
197			'onprogress' => 1,
198			'onratechange' => 1,
199			'onreset' => 1,
200			'onresize' => 1,
201			'onscroll' => 1,
202			'onsearch' => 1,
203			'onseeked' => 1,
204			'onseeking' => 1,
205			'onselect' => 1,
206			'onstalled' => 1,
207			'onsubmit' => 1,
208			'onsuspend' => 1,
209			'ontimeupdate' => 1,
210			'ontoggle' => 1,
211			'onunload' => 1,
212			'onvolumechange' => 1,
213			'onwaiting' => 1,
214			'onwheel' => 1,
215			'open' => 1,
216			'optimum' => 1,
217			'pattern' => 1,
218			'placeholder' => 1,
219			'poster' => 1,
220			'preload' => 1,
221			'readonly' => 1,
222			'rel' => 1,
223			'required' => 1,
224			'reversed' => 1,
225			'rows' => 1,
226			'rowspan' => 1,
227			'sandbox' => 1,
228			'scope' => 1,
229			'selected' => 1,
230			'shape' => 1,
231			'size' => 1,
232			'sizes' => 1,
233			'span' => 1,
234			'spellcheck' => 1,
235			'src' => 1,
236			'srcdoc' => 1,
237			'srclang' => 1,
238			'source' => 1,
239			'start' => 1,
240			'step' => 1,
241			'style' => 1,
242			'tabindex' => 1,
243			'target' => 1,
244			'title' => 1,
245			'translate' => 1,
246			'type' => 1,
247			'usemap' => 1,
248			'value' => 1,
249			'width' => 1,
250			'wrap' => 1,
251			];
252			protected static $special_tags = ['<doctypetag>' => '<!doctype>', '<htmltag>' => '<html>', '<headtag>' => '<head>', '<htmltag>' => '<html>', '<bodytag>' => '<body>'];
253			protected static $tags = [
254			'<php>' => 1,
255			'<!-- -->' => 1,
256			'<doctypetag>' => 1,
257			'<a>' => 1,
258			'<abbr>' => 1,
259			'<acronym>' => 1,
260			'<address>' => 1,
261			'<applet>' => 1,
262			'<embed>' => 1,
263			'<object>' => 1,
264			'<area>' => 1,
265			'<article>' => 1,
266			'<aside>' => 1,
267			'<audio>' => 1,
268			'<b>' => 1,
269			'<base>' => 1,
270			'<basefont>' => 1,
271			'<bdi>' => 1,
272			'<bdo>' => 1,
273			'<big>' => 1,
274			'<blockquote>' => 1,
275			'<bodytag>' => 1,
276			'<br>' => 1,
277			'<button>' => 1,
278			'<canvas>' => 1,
279			'<caption>' => 1,
280			'<center>' => 1,
281			'<cite>' => 1,
282			'<code>' => 1,
283			'<col>' => 1,
284			'<colgroup>' => 1,
285			'<data>' => 1,
286			'<datalist>' => 1,
287			'<dd>' => 1,
288			'<del>' => 1,
289			'<details>' => 1,
290			'<dfn>' => 1,
291			'<dialog>' => 1,
292			'<dir>' => 1,
293			'<ul>' => 1,
294			'<div>' => 1,
295			'<dl>' => 1,
296			'<dt>' => 1,
297			'<em>' => 1,
298			'<fieldset>' => 1,
299			'<figcaption>' => 1,
300			'<figure>' => 1,
301			'<font>' => 1,
302			'<footer>' => 1,
303			'<form>' => 1,
304			'<frame>' => 1,
305			'<frameset>' => 1,
306			'<h1>' => 1,
307			'<h2>' => 1,
308			'<h3>' => 1,
309			'<h5>' => 1,
310			'<h6>' => 1,
311			'<hn>' => 1,
312			'<headtag>' => 1,
313			'<header>' => 1,
314			'<hr>' => 1,
315			'<htmltag>' => 1,
316			'<i>' => 1,
317			'<iframe>' => 1,
318			'<img>' => 1,
319			'<input>' => 1,
320			'<ins>' => 1,
321			'<kbd>' => 1,
322			'<label>' => 1,
323			'<legend>' => 1,
324			'<li>' => 1,
325			'<link>' => 1,
326			'<main>' => 1,
327			'<map>' => 1,
328			'<mark>' => 1,
329			'<meta>' => 1,
330			'<meter>' => 1,
331			'<nav>' => 1,
332			'<noframes>' => 1,
333			'<noscript>' => 1,
334			'<ol>' => 1,
335			'<optgroup>' => 1,
336			'<option>' => 1,
337			'<output>' => 1,
338			'<p>' => 1,
339			'<param>' => 1,
340			'<picture>' => 1,
341			'<pre>' => 1,
342			'<progress>' => 1,
343			'<q>' => 1,
344			'<rp>' => 1,
345			'<rt>' => 1,
346			'<ruby>' => 1,
347			'<s>' => 1,
348			'<samp>' => 1,
349			'<script>' => 1,
350			'<section>' => 1,
351			'<select>' => 1,
352			'<small>' => 1,
353			'<source>' => 1,
354			'<span>' => 1,
355			'<strike>' => 1,
356			'<strong>' => 1,
357			'<style>' => 1,
358			'<sub>' => 1,
359			'<summary>' => 1,
360			'<sup>' => 1,
361			'<svg>' => 1,
362			'<table>' => 1,
363			'<tbody>' => 1,
364			'<td>' => 1,
365			'<template>' => 1,
366			'<textarea>' => 1,
367			'<tfoot>' => 1,
368			'<th>' => 1,
369			'<thead>' => 1,
370			'<time>' => 1,
371			'<title>' => 1,
372			'<tr>' => 1,
373			'<track>' => 1,
374			'<tt>' => 1,
375			'<u>' => 1,
376			'<var>' => 1,
377			'<video>' => 1,
378			'<wbr>' => 1,
379			];
380
381			protected function loadHTML($html)
382			{
383			if (!strlen($html)) {
384			throw new \InvalidArgumentException('Empty string given');
385			}
386			$xml = new \DOMDocument();
387			//Suppress warnings: proper error handling is beyond scope of example
388			libxml_use_internal_errors(true);
389
390			$true = $xml->loadHTML($html, LIBXML_HTML_NOIMPLIED \| LIBXML_HTML_NODEFDTD);
391			if ($true) {
392			$this->html = $xml;
393			}
394			}
395
396			protected function handleTags($notAllowedTags, $callback, $callback1)
397			{
398			if (!is_array($notAllowedTags)) {
399			return false;
400			}
401			if (count($notAllowedTags) !== 2) {
402			return false;
403			}
404			$notAllowedTags = array_values($notAllowedTags);
405			$keep = (bool)$notAllowedTags[1];
406			$notAllowedTags = $notAllowedTags[0];
407			if (is_string($notAllowedTags)) {
408			$notAllowedTags = explode(',', $notAllowedTags);
409			}
410			if (is_array($notAllowedTags)) {
411			self::checkSpecialTags($notAllowedTags);
412			$notAllowedTags = array_filter(array_map($callback, $notAllowedTags), $callback1);
413			$this->allowedTags = !$keep ? array_fill_keys($notAllowedTags, 1) : array_diff_key(self::$tags, array_flip($notAllowedTags));
414			} else {
415			return false;
416			}
417
418			return true;
419			}
420
421			protected static function checkSpecialTags(&$notAllowedTags)
422			{
423			foreach (self::$special_tags as $fakeTag => $trueTag) {
424			if (false !== $key = array_search($trueTag, $notAllowedTags, true)) {
425			$notAllowedTags[$key] = $fakeTag;
426			}
427			}
428			}
429
430			protected function handleAttributes($notAllowedAttributes, $callback, $callback2)
431			{
432			if (!is_array($notAllowedAttributes)) {
433			return false;
434			}
435			if (count($notAllowedAttributes) !== 2) {
436			return false;
437			}
438			$keep = (bool)$notAllowedAttributes[1];
439			$notAllowedAttributes = $notAllowedAttributes[0];
440			if (is_string($notAllowedAttributes)) {
441			$notAllowedAttributes = explode(',', $notAllowedAttributes);
442			}
443			if (is_array($notAllowedAttributes)) {
444			$notAllowedAttributes = array_filter(array_map($callback, $notAllowedAttributes), $callback2);
445			$this->allowedAttributes = !$keep ? array_fill_keys($notAllowedAttributes, 1) : array_diff_key(self::$attributes, array_flip($notAllowedAttributes));
446			} else {
447			return false;
448			}
449
450			return true;
451			}
452
453			protected static function handlePhp($is_php, $domDoc, &$allowed_tags)
454			{
455			$result = $domDoc->saveHTML();
456			self::handleMainHtmlTags($result, $allowed_tags);
457
458			return substr(($is_php && isset($allowed_tags['<php>'])) ?
459			str_replace(['<php>', '</php>'], ['<?php ', '?>'], $result) : $result, stripos($result, '<div>') + 5, -7);
460			}
461
462			protected static function handleMainHtmlTags(&$result, &$allowed_tags)
463			{
464			$result = str_replace(
465			['<doctypetag', '</doctypetag>', '<headtag', '</headtag', '<htmltag', '</htmltag', '<bodytag', '</bodytag'],
466			['<!doctype', '', '<head', '</head', '<html', '</html', '<body', '</body'],
467			$result
468			);
469			if (!isset($allowed_tags['<doctypetag>'])) {
470			$doctypeOffset = stripos($result, '<!doctype');
471			$result = str_replace(substr($result, $doctypeOffset, strpos($result, '>', $doctypeOffset) + 1 - $doctypeOffset), '', $result);
472			}
473			}
474
475			protected static function handleComments($domDoc, &$allowed_tags)
476			{
477			if (!isset($allowed_tags['<!-- -->'])) {
478			$xpath = new \DOMXPath($domDoc);
479			$DomComments = $xpath->query('//comment()');
480			foreach ($DomComments as $DomComment) {
481			$DomComment->parentNode->removeChild($DomComment);
482			}
483			}
484			}
485
486			protected static function stripAttributes($tag, &$allowed_attrs, $type = 1)
487			{
488			if ($tag instanceof \DOMElement) {
489			if ($type === 2) {
490			self:: stripAttributesTypeTwo($tag, $allowed_attrs);
491			} else {
492			self::stripAttributesTypeOne($tag, $allowed_attrs);
493			}
494			}
495			}
496
497			protected static function stripAttributesTypeOne($tag, &$allowed_attrs)
498			{
499			foreach (iterator_to_array($tag->attributes) as $attr) {
500			if (!isset($allowed_attrs[$attr->nodeName])) {
501			$tag->removeAttribute($attr->nodeName);
502			}
503			}
504			}
505
506			protected static function stripAttributesTypeTwo($tag, &$allowed_attrs)
507			{
508			foreach (iterator_to_array($tag->attributes) as $attr) {
509			if (!isset($allowed_attrs[$attr->nodeName])) {
510			if ($tag->parentNode) {
511			$tag->parentNode->removeChild($tag);
512			}
513			}
514			}
515			}
516			}
517

manuwhat / strip-tags

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HtmlStripHelper::handleAttributes() A

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