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<?php |
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|
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/** |
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* E2Pdf Truncate Helper |
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* @copyright Copyright 2017 https://e2pdf.com |
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* @license GPLv3 |
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* @version 1 |
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* @link https://e2pdf.com |
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* @since 1.01.02 |
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*/ |
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if (!defined('ABSPATH')) { |
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die('Access denied.'); |
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} |
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|
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class Helper_E2pdf_Truncate { |
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|
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private $helper; |
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private $max_length = 0; |
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private $read_more = ''; |
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private $break_words = false; |
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private $length = 0; |
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private $limit = false; |
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private $elements = array(); |
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|
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public function __construct() { |
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$this->helper = Helper_E2pdf_Helper::instance(); |
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} |
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|
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public function truncate($text = '', $max_length = 100, $read_more = '', $break_words = false, $is_html = false) { |
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if (!$text || mb_strlen($text) < $max_length) { |
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return $text; |
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} |
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if ($is_html) { |
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$this->length = 0; |
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$this->limit = false; |
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$this->elements = array(); |
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$this->max_length = $max_length; |
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$this->read_more = $read_more; |
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$this->break_words = $break_words; |
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$text = '<div>' . $text . '</div>'; |
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$dom = new DOMDocument(); |
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$html = $this->helper->load('convert')->load_html($text, $dom); |
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if ($html) { |
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$remove = $this->truncate_html($dom); |
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foreach ($remove as $child) { |
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$child->parentNode->removeChild($child); |
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} |
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$container = $dom->getElementsByTagName('div')->item(0); |
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$container = $container->parentNode->removeChild($container); |
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while ($dom->firstChild) { |
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$dom->removeChild($dom->firstChild); |
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} |
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while ($container->firstChild) { |
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$dom->appendChild($container->firstChild); |
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} |
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$text = $this->helper->load('convert')->html_entities_decode($dom->saveHTML()); |
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} |
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} else { |
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if (!$break_words) { |
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$text = rtrim($text) . ' '; |
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} |
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$text = mb_substr($text, 0, $max_length); |
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if (!$break_words) { |
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$text = mb_substr($text, 0, strrpos($text, ' ')); |
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} |
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$text = rtrim($text) . $read_more; |
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} |
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return $text; |
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} |
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|
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public function truncate_html($node) { |
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if ($this->limit) { |
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$this->elements[] = $node; |
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} else { |
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if ($node && $node instanceof DOMText) { |
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$nodeLen = mb_strlen($node->nodeValue); |
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$this->length += $nodeLen; |
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if ($this->length > $this->max_length) { |
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if (!$this->break_words) { |
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$text = rtrim($node->nodeValue) . ' '; |
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} else { |
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$text = $node->nodeValue; |
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} |
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$text = mb_substr($text, 0, $nodeLen - ($this->length - $this->max_length)); |
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if (!$this->break_words) { |
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$text = mb_substr($text, 0, strrpos($text, ' ')); |
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} |
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$text = rtrim($text) . $this->read_more; |
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$node->nodeValue = $text; |
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$this->limit = true; |
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} |
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} |
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if ($node->hasChildNodes()) { |
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foreach ($node->childNodes as $child) { |
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$this->truncate_html($child); |
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} |
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} |
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} |
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return $this->elements; |
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} |
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} |
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|
