133 lines
2.9 KiB
PHP
133 lines
2.9 KiB
PHP
<?php
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namespace PicoFeed\Filter;
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/**
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* Filter class
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*
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* @author Frederic Guillot
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* @package Filter
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*/
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class Filter
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{
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/**
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* Get the Html filter instance
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*
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* @static
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* @access public
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* @param string $html HTML content
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* @param string $website Site URL (used to build absolute URL)
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* @return Html
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*/
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public static function html($html, $website)
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{
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$filter = new Html($html, $website);
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return $filter;
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}
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/**
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* Escape HTML content
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*
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* @static
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* @access public
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* @return string
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*/
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public static function escape($content)
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{
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return @htmlspecialchars($content, ENT_QUOTES, 'UTF-8', false);
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}
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/**
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* Remove HTML tags
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*
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* @access public
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* @param string $data Input data
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* @return string
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*/
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public function removeHTMLTags($data)
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{
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return preg_replace('~<(?:!DOCTYPE|/?(?:html|head|body))[^>]*>\s*~i', '', $data);
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}
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/**
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* Remove the XML tag from a document
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*
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* @static
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* @access public
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* @param string $data Input data
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* @return string
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*/
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public static function stripXmlTag($data)
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{
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if (strpos($data, '<?xml') !== false) {
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$data = ltrim(substr($data, strpos($data, '?>') + 2));
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}
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do {
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$pos = strpos($data, '<?xml-stylesheet ');
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if ($pos !== false) {
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$data = ltrim(substr($data, strpos($data, '?>') + 2));
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}
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} while ($pos !== false && $pos < 200);
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return $data;
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}
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/**
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* Strip head tag from the HTML content
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*
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* @static
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* @access public
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* @param string $data Input data
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* @return string
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*/
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public static function stripHeadTags($data)
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{
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return preg_replace('@<head[^>]*?>.*?</head>@siu','', $data );
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}
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/**
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* Trim whitespace from the begining, the end and inside a string and don't break utf-8 string
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*
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* @static
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* @access public
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* @param string $value Raw data
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* @return string Normalized data
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*/
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public static function stripWhiteSpace($value)
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{
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$value = str_replace("\r", ' ', $value);
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$value = str_replace("\t", ' ', $value);
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$value = str_replace("\n", ' ', $value);
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// $value = preg_replace('/\s+/', ' ', $value); <= break utf-8
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return trim($value);
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}
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/**
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* Dirty quickfixes before XML parsing
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*
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* @static
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* @access public
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* @param string $data Raw data
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* @return string Normalized data
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*/
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public static function normalizeData($data)
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{
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$invalid_chars = array(
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"\x10",
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"\xc3\x20",
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"",
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"\xe2\x80\x9c\x08",
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);
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foreach ($invalid_chars as $needle) {
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$data = str_replace($needle, '', $data);
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}
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return $data;
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}
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}
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