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100 lines
2.1 KiB
100 lines
2.1 KiB
<?php
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namespace p3k\XRay\Formats;
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use DOMDocument, DOMXPath;
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use HTMLPurifier, HTMLPurifier_Config;
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interface iFormat {
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public static function matches_host($url);
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public static function matches($url);
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}
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abstract class Format implements iFormat {
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protected static function _unknown() {
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return [
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'data' => [
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'type' => 'unknown'
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]
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];
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}
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protected static function _loadHTML($html) {
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$doc = new DOMDocument();
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@$doc->loadHTML($html);
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if(!$doc) {
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return [null, null];
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}
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$xpath = new DOMXPath($doc);
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return [$doc, $xpath];
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}
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protected static function sanitizeHTML($html, $allowImg=true) {
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$allowed = [
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'a',
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'abbr',
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'b',
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'code',
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'del',
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'em',
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'i',
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'q',
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'strike',
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'strong',
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'time',
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'blockquote',
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'pre',
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'p',
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'h1',
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'h2',
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'h3',
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'h4',
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'h5',
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'h6',
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'ul',
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'li',
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'ol'
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];
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if($allowImg)
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$allowed[] = 'img';
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$config = HTMLPurifier_Config::createDefault();
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$config->set('Cache.DefinitionImpl', null);
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$config->set('HTML.AllowedElements', $allowed);
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$def = $config->getHTMLDefinition(true);
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$def->addElement(
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'time',
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'Inline',
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'Inline',
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'Common',
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[
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'datetime' => 'Text'
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]
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);
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// Override the allowed classes to only support Microformats2 classes
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$def->manager->attrTypes->set('Class', new HTMLPurifier_AttrDef_HTML_Microformats2());
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$purifier = new HTMLPurifier($config);
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$sanitized = $purifier->purify($html);
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$sanitized = str_replace("
","\r",$sanitized);
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return trim($sanitized);
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}
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// Return a plaintext version of the input HTML
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protected static function stripHTML($html) {
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$config = HTMLPurifier_Config::createDefault();
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$config->set('Cache.DefinitionImpl', null);
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$config->set('HTML.AllowedElements', ['br']);
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$purifier = new HTMLPurifier($config);
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$sanitized = $purifier->purify($html);
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$sanitized = str_replace("
","\r",$sanitized);
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$sanitized = html_entity_decode($sanitized);
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return trim(str_replace('<br>',"\n", $sanitized));
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}
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}
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