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Current File : //home1/lightco1/www/lightcolab.com/administrator/components/com_dbreplacer/models/default.php

<?php
/**
 * @package         DB Replacer
 * @version         6.1.0
 * 
 * @author          Peter van Westen <info@regularlabs.com>
 * @link            http://www.regularlabs.com
 * @copyright       Copyright © 2018 Regular Labs All Rights Reserved
 * @license         http://www.gnu.org/licenses/gpl-2.0.html GNU/GPL
 */

defined('_JEXEC') or die;

use RegularLabs\Library\RegEx as RL_RegEx;

/**
 * DB Replacer Default Model
 */
class DBReplacerModelDefault extends JModelLegacy
{
	/**
	 * Constructor
	 */
	public function __construct()
	{
		parent::__construct();
	}

	/**
	 * Method to replace in the database
	 *
	 * @access public
	 * @return integer
	 */
	public function replace(&$params)
	{
		if (empty($params->columns))
		{
			return;
		}

		$where = '';
		$s     = str_replace('||space||', ' ', $params->search);
		$r     = str_replace('||space||', ' ', $params->replace);

		$likes = [];
		if ($s != '')
		{
			if ($s == 'NULL')
			{
				$likes[] = '= ""';
				$likes[] = 'IS NULL';
			}
			else if ($s == '*')
			{
				$likes[] = ' != \'something it would never be!!!\'';
			}
			else
			{
				$dbs = $s;

					$dbs = RL_RegEx::quote($dbs);
					// replace multiple whitespace (with at least one enter) with regex whitespace match
					$dbs = RL_RegEx::replace('\s*\n\s*', '\s*', $dbs);

				// escape slashes
				$dbs = str_replace('\\', '\\\\', $dbs);
				// escape single quotes
				$dbs = str_replace('\'', '\\\'', $dbs);
				// remove the lazy character: doesn't work in mysql
				$dbs = str_replace(['*?', '+?'], ['*', '+'], $dbs);
				// change \s to [:space:]
				$dbs = str_replace('\s', '[[:space:]]', $dbs);

				if ($params->case)
				{
					$likes[] = 'RLIKE BINARY \'' . $dbs . '\'';
				}
				else
				{
					$likes[] = 'RLIKE \'' . $dbs . '\'';
				}
			}
		}
		if ( ! empty($likes))
		{
			$where = [];
			foreach ($params->columns as $column)
			{
				foreach ($likes as $like)
				{
					$where[] = '`' . trim($column) . '` ' . $like;
				}
			}
			$where = ' WHERE ( ' . implode(' OR ', $where) . ' )';
		}


		$query = 'SHOW COLUMNS FROM `' . trim(RL_RegEx::replace('^__', $this->_db->getPrefix(), $params->table)) . '`';
		$this->_db->setQuery($query);
		$all_columns = $this->_db->loadObjectList();

		$index_columns = [];

		foreach ($all_columns as $column)
		{
			if ($column->Key != 'PRI')
			{
				continue;
			}

			$index_columns[] = $column->Field;
		}

		if (empty($index_columns))
		{
			foreach ($all_columns as $column)
			{
				if (strpos($column->Type, 'float') !== 0)
				{
					continue;
				}

				$index_columns[] = $column->Field;
			}
		}

		$select_columns = array_merge($index_columns, $params->columns);

		$query = 'SELECT `' . implode('`,`', $select_columns) . '`'
			. ' FROM `' . trim(RL_RegEx::replace('^__', $this->_db->getPrefix(), $params->table)) . '`'
			. $where
			. ' LIMIT ' . (int) $params->max;
		$this->_db->setQuery($query);

		$rows = $this->_db->loadObjectList();

		$count = 0;
		foreach ($rows as $row)
		{
			$set   = [];
			$where = [];

			foreach ($row as $key => $val)
			{
				if (in_array($key, $index_columns) && $val != '' && $val !== null && $val != '0000-00-00')
				{
					$where[] = $this->_db->quoteName(trim($key)) . ' = ' . $this->_db->quote($val);
				}

				if ( ! in_array($key, $params->columns))
				{
					continue;
				}

				if ($s == 'NULL')
				{
					if ($val == '' || $val === null || $val == '0000-00-00')
					{
						$set[] = $this->_db->quoteName(trim($key)) . ' = ' . $this->_db->quote($r);
					}
					continue;
				}

				if ($s == '*')
				{
					$set[] = $this->_db->quoteName(trim($key)) . ' = ' . $this->_db->quote($r);
					continue;
				}

				$dbs = $s;
					$dbs = RL_RegEx::quote($dbs);
					// replace multiple whitespace (with at least one enter) with regex whitespace match
					$dbs = RL_RegEx::replace('\s*\n\s*', '\s*', $dbs);
					$dbs = str_replace('\[[:space:]]', '\s*', $dbs);

				$options = 's';
				if ( ! $params->case)
				{
					$options .= 'i';
				}

				if ( ! @RL_RegEx::match($dbs, $val, $matches, $options))
				{
					continue;
				}

				$set[] = $this->_db->quoteName(trim($key)) . ' = ' . $this->_db->quote(RL_RegEx::replace($dbs, $r, $val, $options));
			}

			// No specific indexed columns found, so add search columns to where
			if (empty($where))
			{
				foreach ($row as $key => $val)
				{
					$where[] = $this->_db->quoteName(trim($key)) . ' = ' . $this->_db->quote($val);
				}
			}

			if (empty($set) || empty($where))
			{
				continue;
			}

			$where = ' WHERE (' . implode(' AND ', $where) . ')';

			$query = 'UPDATE `' . trim(RL_RegEx::replace('^__', $this->_db->getPrefix(), $params->table)) . '`'
				. ' SET ' . implode(', ', $set)
				. $where
				. ' LIMIT 1';
			$this->_db->setQuery($query);

			if ( ! $this->_db->execute())
			{
				JFactory::getApplication()->enqueueMessage(JText::_('???'), 'error');
				continue;
			}

			$count++;
		}

		if ( ! $count)
		{
			JFactory::getApplication()->enqueueMessage(JText::_('DBR_NO_ROWS_UPDATED'), 'notice');

			return;
		}

		JFactory::getApplication()->enqueueMessage(JText::sprintf('DBR_ROWS_UPDATED', $count), 'message');
	}
}

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