class/Common/SysUtility.php
<?php
namespace XoopsModules\Xfguestbook\Common;
/*
Utility Class Definition
You may not change or alter any portion of this comment or credits of
supporting developers from this source code or any supporting source code
which is considered copyrighted (c) material of the original comment or credit
authors.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*/
/**
*
* @license https://www.fsf.org/copyleft/gpl.html GNU public license
* @copyright https://xoops.org 2000-2020 © XOOPS Project
* @author ZySpec <zyspec@yahoo.com>
* @author Mamba <mambax7@gmail.com>
*/
use MyTextSanitizer;
use XoopsFormDhtmlTextArea;
use XoopsFormTextArea;
use XoopsModules\Xfguestbook;
/**
* Class SysUtility
*/
class SysUtility
{
use VersionChecks;
//checkVerXoops, checkVerPhp Traits
use ServerStats;
// getServerStats Trait
use FilesManagement;
// Files Management Trait
/**
* truncateHtml can truncate a string up to a number of characters while preserving whole words and HTML tags
* www.gsdesign.ro/blog/cut-html-string-without-breaking-the-tags
* www.cakephp.org
*
* @param string $text String to truncate.
* @param int $length Length of returned string, including ellipsis.
* @param string $ending Ending to be appended to the trimmed string.
* @param bool $exact If false, $text will not be cut mid-word
* @param bool $considerHtml If true, HTML tags would be handled correctly
*
* @return string Trimmed string.
*/
public static function truncateHtml($text, $length = 100, $ending = '...', $exact = false, $considerHtml = true)
{
if ($considerHtml) {
// if the plain text is shorter than the maximum length, return the whole text
if (mb_strlen(\preg_replace('/<.*?' . '>/', '', $text)) <= $length) {
return $text;
}
// splits all html-tags to scanable lines
\preg_match_all('/(<.+?' . '>)?([^<>]*)/s', $text, $lines, \PREG_SET_ORDER);
$total_length = mb_strlen($ending);
$open_tags = [];
$truncate = '';
foreach ($lines as $line_matchings) {
// if there is any html-tag in this line, handle it and add it (uncounted) to the output
if (!empty($line_matchings[1])) {
// if it's an "empty element" with or without xhtml-conform closing slash
if (\preg_match('/^<(\s*.+?\/\s*|\s*(img|br|input|hr|area|base|basefont|col|frame|isindex|link|meta|param)(\s.+?)?)>$/is', $line_matchings[1])) {
// do nothing
// if tag is a closing tag
} elseif (\preg_match('/^<\s*\/([^\s]+?)\s*>$/s', $line_matchings[1], $tag_matchings)) {
// delete tag from $open_tags list
$pos = \array_search($tag_matchings[1], $open_tags, true);
if (false !== $pos) {
unset($open_tags[$pos]);
}
// if tag is an opening tag
} elseif (\preg_match('/^<\s*([^\s>!]+).*?' . '>$/s', $line_matchings[1], $tag_matchings)) {
// add tag to the beginning of $open_tags list
\array_unshift($open_tags, mb_strtolower($tag_matchings[1]));
}
// add html-tag to $truncate'd text
$truncate .= $line_matchings[1];
}
// calculate the length of the plain text part of the line; handle entities as one character
$content_length = mb_strlen(\preg_replace('/&[0-9a-z]{2,8};|&#\d{1,7};|[0-9a-f]{1,6};/i', ' ', $line_matchings[2]));
if ($total_length + $content_length > $length) {
// the number of characters which are left
$left = $length - $total_length;
$entities_length = 0;
// search for html entities
if (\preg_match_all('/&[0-9a-z]{2,8};|&#\d{1,7};|[0-9a-f]{1,6};/i', $line_matchings[2], $entities, \PREG_OFFSET_CAPTURE)) {
// calculate the real length of all entities in the legal range
foreach ($entities[0] as $entity) {
if ($left >= $entity[1] + 1 - $entities_length) {
$left--;
$entities_length += mb_strlen($entity[0]);
} else {
// no more characters left
break;
}
}
}
$truncate .= mb_substr($line_matchings[2], 0, $left + $entities_length);
// maximum lenght is reached, so get off the loop
break;
}
$truncate .= $line_matchings[2];
$total_length += $content_length;
// if the maximum length is reached, get off the loop
if ($total_length >= $length) {
break;
}
}
} else {
if (mb_strlen($text) <= $length) {
return $text;
}
$truncate = mb_substr($text, 0, $length - mb_strlen($ending));
}
// if the words shouldn't be cut in the middle...
if (!$exact) {
// ...search the last occurance of a space...
$spacepos = mb_strrpos($truncate, ' ');
if (isset($spacepos)) {
// ...and cut the text in this position
$truncate = mb_substr($truncate, 0, $spacepos);
}
}
// add the defined ending to the text
$truncate .= $ending;
if ($considerHtml) {
// close all unclosed html-tags
foreach ($open_tags as $tag) {
$truncate .= '</' . $tag . '>';
}
}
return $truncate;
}
/**
* @param null $helper
* @param array|null $options
* @return \XoopsFormDhtmlTextArea|\XoopsFormEditor
*/
public static function getEditor($helper = null, $options = null)
{
/** @var Helper $helper */
if (null === $options) {
$options = [];
$options['name'] = 'Editor';
$options['value'] = 'Editor';
$options['rows'] = 10;
$options['cols'] = '100%';
$options['width'] = '100%';
$options['height'] = '400px';
}
if (null === $helper) {
$helper = Helper::getInstance();
}
$isAdmin = $helper->isUserAdmin();
if (\class_exists('XoopsFormEditor')) {
if ($isAdmin) {
$descEditor = new \XoopsFormEditor(\ucfirst($options['name']), $helper->getConfig('editorAdmin'), $options, $nohtml = false, $onfailure = 'textarea');
} else {
$descEditor = new \XoopsFormEditor(\ucfirst($options['name']), $helper->getConfig('editorUser'), $options, $nohtml = false, $onfailure = 'textarea');
}
} else {
$descEditor = new \XoopsFormDhtmlTextArea(\ucfirst($options['name']), $options['name'], $options['value'], '100%', '100%');
}
// $form->addElement($descEditor);
return $descEditor;
}
/**
* @param $fieldname
* @param $table
*
* @return bool
*/
public function fieldExists($fieldname, $table)
{
global $xoopsDB;
$result = $xoopsDB->queryF("SHOW COLUMNS FROM $table LIKE '$fieldname'");
return ($xoopsDB->getRowsNum($result) > 0);
}
}