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<?php
/**
* @version 			SEBLOD 3.x Core ~ $Id: helper.php sebastienheraud $
* @package			SEBLOD (App Builder & CCK) // SEBLOD nano (Form Builder)
* @url				https://www.seblod.com
* @editor			Octopoos - www.octopoos.com
* @copyright		Copyright (C) 2009 - 2018 SEBLOD. All Rights Reserved.
* @license 			GNU General Public License version 2 or later; see _LICENSE.php
**/

defined( '_JEXEC' ) or die;

// JCckDevHelper
abstract class JCckDevHelper
{
	// alterTableAddColumn
	public static function alterTableAddColumn( $table, $column, $column_prev = '', $type = 'VARCHAR(50)' )
	{
		$db			=	JFactory::getDbo();
		$columns	=	$db->getTableColumns( $table );

		if ( $column_prev != '' && $column != $column_prev ) {
			if ( !isset( $columns[$column] ) ) {
				JCckDatabase::execute( 'ALTER TABLE '.JCckDatabase::quoteName( $table ).' CHANGE '.JCckDatabase::quoteName( $column_prev ).' '.JCckDatabase::quoteName( $column ).' '.$type.' NOT NULL' );
			}
		} elseif ( !isset( $columns[$column] ) ) {
			JCckDatabase::execute( 'ALTER TABLE '.JCckDatabase::quoteName( $table ).' ADD '.JCckDatabase::quoteName( $column ).' '.$type.' NOT NULL' );
		}
	}

	// checkAjaxScript
	public static function checkAjaxScript( $file )
	{
		$app		=	JFactory::getApplication();
		$allowed	=	false;
		$referrer	=	$app->input->getCmd( 'referrer', '' );

		if ( $referrer != '' ) {
			$manifest	=	'';
			$referrer	=	explode( '.', $referrer );

			if ( isset( $referrer[0], $referrer[1] ) ) {
				switch ( $referrer[0] ) {
					case 'component':
						if ( $app->isClient( 'administrator' ) ) {
							$manifest	=	JPATH_ADMINISTRATOR.'/components/'.$referrer[1].'/manifest.xml';
						}
						break;
					case 'plugin':
						$manifest	=	JPATH_SITE.'/plugins/'.$referrer[1].'/'.$referrer[2].'/'.$referrer[2].'.xml';
						break;
					case 'processing':
						$manifest	=	JPATH_ADMINISTRATOR.'/manifests/files/pro_cck_'.$referrer[1].'.xml';
						break;
					case 'template':
						$manifest	=	JPATH_SITE.'/templates/'.$referrer[1].'/templateDetails.xml';
						break;
					case 'variation':
						$manifest	=	JPATH_ADMINISTRATOR.'/manifests/files/var_cck_'.$referrer[1].'.xml';
						break;
					default:
						break;
				}

				if ( $manifest && is_file( $manifest ) ) {
					$xml	=	JCckDev::fromXML( $manifest );

					if ( is_object( $xml ) && isset( $xml->cck_ajax ) ) {
						foreach ( $xml->cck_ajax->files->file as $path ) {
							$path	=	(string)$path;

							if ( $path && $path == $file ) {
								$allowed	=	true;
							}
						}
					}
				}
			}
		}

		return $allowed;
	}

	// createFolder
	public static function createFolder( $path, $mode = 0755 )
	{
		jimport( 'joomla.filesystem.folder' );
		
		if ( ! JFolder::exists( $path ) ) {
			JFolder::create( $path, $mode );
			$buffer	=	'<!DOCTYPE html><title></title>';
			JFile::write( $path.'/index.html', $buffer );
		}
		
		return $path;
	}

	// explode
	public static function explode( $delimiters, $string, $limit = null, $replace = array( 'search'=>array( ' ', "\r" ), 'replace'=>'' ) )
	{
		if ( is_array( $replace ) && isset( $replace['search'] ) && isset( $replace['replace'] ) ) {
			$string		=	str_replace( $replace['search'], $replace['replace'], $string );
		}

		$string		=	str_replace( $delimiters, '||', $string );
		$list		=	explode( '||', $string );
		
		return $list;
	}

	// formatBytes
	public static function formatBytes( $bytes, $precision = 2 )
	{ 
		$units	=	array( 'B', 'KB', 'MB', 'GB', 'TB' ); 
	   
		$bytes	=	max( $bytes, 0 );
		$pow	=	floor( ( $bytes ? log( $bytes ) : 0 ) / log( 1024 ) );
		$pow	=	min( $pow, count( $units ) - 1 );
		$bytes	/=	pow( 1024, $pow );
		
		return round( $bytes, $precision ).' '.$units[$pow];
	}
	
	// getAbsoluteUrl
	public static function getAbsoluteUrl( $itemId = '', $query = '', $method = 'base' )
	{
		if ( $query != '' ) {
			if ( $query[0] == '?' || $query[0] == '&' ) {
				$query	=	substr( $query, 1 );
			}
		}
		$glue	=	( $query != '' ) ? '/?' : '';
		
		if ( $itemId == '' || $itemId == 'auto' ) {
			$itemId	=	(int)JCck::getConfig_Param( 'sef_root', 0 );

			if ( $itemId > 0 && JFactory::getApplication()->isClient( 'site' ) ) {
				return JRoute::_( 'index.php?Itemid='.$itemId, true, ( JUri::getInstance()->isSSL() ? 1 : 2 ) ).$glue.$query;
			} elseif ( $itemId == -1 ) {
				return JUri::root().'component/cck'.$glue.$query;
			} else {
				$context	=	'';
				$glue		=	( $query != '' ) ? '&' : '';

				if ( JCck::isSite() && JCck::getSite()->context ) {
					$context	=	JCck::getSite()->context.'/';
				}

				return JUri::$method().$context.'index.php?option=com_cck'.$glue.$query;
			}
		} else {
			return JRoute::_( 'index.php?Itemid='.$itemId, true, ( JUri::getInstance()->isSSL() ? 1 : 2 ) ).$glue.$query;
		}
	}
	
	// getBranch
	public static function getBranch( $table, $pk )
	{
		$query 	= 'SELECT s.id, (COUNT(parent.id) - (branch.depth2 + 1)) AS depth2'
				. ' FROM '.$table.' AS s,'
				. $table.' AS parent,'
				. $table.' AS subparent,'
				. ' ('
					. ' SELECT s.id, (COUNT(parent.id) - 1) AS depth2'
					. ' FROM '.$table.' AS s,'
					. $table.' AS parent'
					. ' WHERE s.lft BETWEEN parent.lft AND parent.rgt'
					. ' AND s.id ='.(int)$pk
					. ' GROUP BY s.id'
					. ' ORDER BY s.lft'
					. ' ) AS branch'
				. ' WHERE s.lft BETWEEN parent.lft AND parent.rgt'
				. ' AND s.lft BETWEEN subparent.lft AND subparent.rgt'
				. ' AND subparent.id = branch.id'
				. ' GROUP BY s.id'
				. ' ORDER BY s.lft';
		$items	=	JCckDatabase::loadColumn( $query );
		
		return( $items );
	}

	// getCountryName
	public static function getCountryName( $code2 )
	{
		static $items = null;

		$code2	=	strtoupper( $code2 );

		if ( !is_array( $items ) ) {
			$lang	=	JFactory::getLanguage();
			$code	=	'en';
			$codes	=	array(
							'de'=>'',
							'en'=>'',
							'es'=>'',
							'fr'=>'',
							'it'=>'',
							'ru'=>'',
							'uk'=>''
						);

			jimport( 'joomla.language.helper' );
			$languages	=	JLanguageHelper::getLanguages( 'lang_code' );
			$lang_tag	=	JFactory::getLanguage()->getTag();
			$lang_code	=	( isset( $languages[$lang_tag] ) ) ? strtoupper( $languages[$lang_tag]->sef ) : '';
			$lang_code	=	strtolower( $lang_code );

			if ( isset( $codes[$lang_code] ) ) {
				$code	=	$lang_code;
			}

			$items	=	JCckDatabase::loadObjectList( 'SELECT name_'.$code.' AS name, code2 FROM #__cck_more_countries', 'code2' );

			if ( !is_array( $items ) ) {
				$items	=	array();
			}
		}

		if ( isset( $items[$code2] ) ) {
			return $items[$code2]->name;
		}

		return ucfirst( $code2 );
	}

	// getDownloadInfo
	public static function getDownloadInfo( $id, $fieldname )
	{
		$app		=	JFactory::getApplication();
		$client		=	$app->input->get( 'client', 'content' );
		$collection	=	$app->input->get( 'collection', '' );
		$restricted	=	'';
		$user		=	JFactory::getUser();
		$xi			=	$app->input->getInt( 'xi', 0 );

		$field		=	JCckDatabase::loadObject( 'SELECT a.* FROM #__cck_core_fields AS a WHERE a.name="'.JCckDatabase::escape( ( ( $collection != '' ) ? $collection : $fieldname ) ).'"' ); //#
		$query		=	'SELECT a.id, a.pk, a.author_id, a.cck as type, a.storage_location, b.'.$field->storage_field.' as value, c.id as type_id, a.store_id'
					.	' FROM #__cck_core AS a'
					.	' LEFT JOIN '.$field->storage_table.' AS b on b.id = a.pk'
					.	' LEFT JOIN #__cck_core_types AS c on c.name = a.cck'
					.	' WHERE a.id ='.(int)$id;
		$core		=	JCckDatabase::loadObject( $query );

		if ( !is_object( $core ) ) {
			return array( 'error'=>true, 'message'=>JText::_( 'COM_CCK_ALERT_FILE_DOESNT_EXIST' ) );
		}
		JPluginHelper::importPlugin( 'cck_storage_location' );

		if ( !JCck::callFunc_Array( 'plgCCK_Storage_Location'.$core->storage_location, 'access', array( $core->pk, false ) ) ) {
			return array( 'error'=>true, 'message'=>JText::_( 'COM_CCK_ALERT_FILE_DOESNT_EXIST' ) );
		}

		JPluginHelper::importPlugin( 'cck_storage' );
		JPluginHelper::importPlugin( 'cck_field' );

		$config		=	array(
							'author'=>$core->author_id,
							'client'=>$client,
							'collection'=>$collection,
							'error'=>false,
							'fieldname'=>$fieldname,
							'id'=>$core->id,
							'isNew'=>0,
							'location'=>$core->storage_location,
							'pk'=>$core->pk,
							'pkb'=>0,
							'store_id'=>$core->store_id,
							'storages'=>array(),
							'task'=>'download',
							'type'=>$core->type,
							'type_id'=>$core->type_id,
							'xi'=>$xi
						);
		$dispatcher		=	JEventDispatcher::getInstance();
		$field->value	=	$core->value;
		$pk				=	$core->pk;
		$value			=	'';

		$dispatcher->trigger( 'onCCK_StoragePrepareDownload', array( &$field, &$value, &$config ) );

		// Access
		$clients	=	JCckDatabase::loadObjectList( 'SELECT a.fieldid, a.client, a.access, a.restriction, a.restriction_options FROM #__cck_core_type_field AS a LEFT JOIN #__cck_core_types AS b ON b.id = a.typeid'
													. ' WHERE a.fieldid = '.(int)$field->id.' AND b.name="'.(string)$config['type'].'"', 'client' );
		$access		=	( isset( $clients[$client]->access ) ) ? (int)$clients[$client]->access : 0;
		$autorised	=	$user->getAuthorisedViewLevels();
		$restricted	=	( isset( $clients[$client]->restriction ) ) ? $clients[$client]->restriction : '';
		if ( !( $access > 0 && array_search( $access, $autorised ) !== false ) ) {
			return array( 'error'=>true, 'message'=>JText::_( 'COM_CCK_ALERT_FILE_NOT_AUTH' ) );
		}

		if ( $restricted ) {
			JPluginHelper::importPlugin( 'cck_field_restriction' );
			$field->restriction			=	$restricted;
			$field->restriction_options	=	$clients[$client]->restriction_options;
			$allowed	=	JCck::callFunc_Array( 'plgCCK_Field_Restriction'.$restricted, 'onCCK_Field_RestrictionPrepareContent', array( &$field, &$config ) );
			
			if ( $allowed ) {
				require_once JPATH_LIBRARIES.'/cck/base/form/form.php';

				$name		=	$field->name;
				$parent		=	JCckDatabase::loadResult( 'SELECT parent FROM #__cck_core_types WHERE name = "'.(string)$config['type'].'"' );
				$fields		=	CCK_Form::getFields( array( $config['type'], $parent ), $config['client'], -1, '', true );
				
				if ( count( $fields ) ) {
					foreach ( $fields as $field2 ) {
						$value2	=	'';

						if ( $field2->name ) {
							$Pt	=	$field2->storage_table;
							if ( $Pt && ! isset( $config['storages'][$Pt] ) ) {
								$config['storages'][$Pt]	=	'';
								$dispatcher->trigger( 'onCCK_Storage_LocationPrepareContent', array( &$field2, &$config['storages'][$Pt], $config['pk'], &$config ) );
							}
							
							$dispatcher->trigger( 'onCCK_StoragePrepareContent', array( &$field2, &$value2, &$config['storages'][$Pt] ) );
							if ( is_string( $value2 ) ) {
								$value2		=	trim( $value2 );
							}
							
							$dispatcher->trigger( 'onCCK_FieldPrepareContent', array( &$field2, $value2, &$config ) );

							// Was it the last one?
							// if ( $config['error'] ) {
								// break;
							// }
						}
					}
				}
				
				// Merge
				if ( count( $config['fields'] ) ) {
					foreach ( $config['fields'] as $k=>$v ) {
						if ( $v->restriction != 'unset' ) {
							$fields[$k]	=	$v;
						}
					}
					$config['fields']	=	null;
					unset( $config['fields'] );
				}

				if ( isset( $config['process']['beforeRenderContent'] ) && count( $config['process']['beforeRenderContent'] ) ) {
					JCckDevHelper::sortObjectsByProperty( $config['process']['beforeRenderContent'], 'priority' );

					foreach ( $config['process']['beforeRenderContent'] as $process ) {
						if ( $process->type ) {
							JCck::callFunc_Array( 'plg'.$process->group.$process->type, 'on'.$process->group.'BeforeRenderContent', array( $process->params, &$fields, &$config['storages'], &$config ) );
						}
					}
				}

				$allowed	=	(bool)$fields[$name]->state;
			}

			// Prevent PrepareContent & beforeRenderContent to alter $config['error']
			$config['error']	=	false;

			if ( $allowed !== true ) {
				return array( 'error'=>true, 'message'=>JText::_( 'COM_CCK_ALERT_FILE_NOT_AUTH' ) );
			}
		}
		$field			=	JCckDatabase::loadObject( 'SELECT a.* FROM #__cck_core_fields AS a WHERE a.name="'.JCckDatabase::escape( $fieldname ).'"' ); //#

		$dispatcher->trigger( 'onCCK_FieldPrepareDownload', array( &$field, $value, &$config ) );

		$config['file']	=	$field->filename;

		if ( isset( $field->task ) ) {
			$config['task2']	=	$field->task;
		}

		return $config;
	}
	
	// getPermalink()
	public static function getPermalink( $types = 'canonical', $object = 'joomla_article' )
	{
		$lang_code		=	JFactory::getLanguage()->getTag();
		$permalink		=	'';
		$root			=	substr( JUri::root(), 0, -1 );

		if ( !is_array( $types ) ) {
			$types		=	array( 0=>$types );
		}
		if ( count( $types ) ) {
			foreach ( $types as $type ) {
				if ( $permalink != '' ) {
					break;
				}
				if ( $type == 'canonical' ) {
					if ( isset( JFactory::getApplication()->cck_canonical_url ) ) {
						$permalink	=	$root.JFactory::getApplication()->cck_canonical_url;
					}
				} elseif ( $type == 'current' ) {
					$properties	=	array( 'routes' );
					require_once JPATH_SITE.'/plugins/cck_storage_location/'.$object.'/'.$object.'.php';
					$properties	=	JCck::callFunc( 'plgCCK_Storage_Location'.$object, 'getStaticProperties', $properties );
					if ( isset( $properties['routes'][$lang_code] ) && $properties['routes'][$lang_code] != '' ) {
						$permalink	=	$root.JRoute::_( $properties['routes'][$lang_code] );
					}
				}
			}
		}

		return $permalink;
	}

	// getRelativePath
	public static function getRelativePath( $path, $prepend = true )
	{
		$path	=	str_ireplace( JPATH_ROOT, '', $path );
		$path	=	str_replace( '\\', '/', $path );
		
		if ( !$path ) {
			return $path;
		}

		if ( $path[0] == '/' && $prepend === false ) {
			$path	=	substr( $path, 1 );
		} elseif ( $path[0] != '/' && $prepend === true ) {
			$path	=	'/'.$path;
		}
		
		return $path;
	}

	// getRules
	public static function getRules( $rules, $default = '{}' )
	{
		$json	=	'';
		
		if ( count( $rules ) ) {
			foreach ( $rules as $name => $r ) {
				$j	=	'';
				foreach ( $r as $k => $v ) {
					if ( $v != '' ) {
						$j	.=	'"'.$k.'":'.$v.',';
					}
				}
				$json	.=	'"'.$name.'":'.( $j ? '{'.substr( $j, 0, -1 ).'}' : '[]' ).',';
			}
			$json	=	substr( $json, 0, -1 );
		}
		
		return ( $json != '' ) ? '{'.$json.'}' : $default;
	}
	
	// getRouteParams
	public static function getRouteParams( $name, $sef = '' )
	{
		static $params	=	array();
		
		if ( $name == '' ) {
			return array();
		}
		if ( !isset( $params[$name] )  ) {
			$object				=	JCckDatabase::loadObject( 'SELECT options, sef_route, sef_route_aliases, storage_location FROM #__cck_core_searchs WHERE name = '.JCckDatabase::quote( $name ) );
			$object->options	=	json_decode( $object->options );

			$params[$name]		=	array();

			if ( $sef != '' ) {
				$params[$name]['doSEF']		=	$sef;
			} else {
				$params[$name]['doSEF']		=	( isset( $object->options->sef ) && $object->options->sef != '' ) ? $object->options->sef : JCck::getConfig_Param( 'sef', '2' );
			}

			$params[$name]['join_key']		=	'pk';
			$params[$name]['location']		=	( $object->storage_location ) ? $object->storage_location : 'joomla_article';
			$params[$name]['sef_aliases']	=	$object->sef_route_aliases;
			$params[$name]['sef_types']		=	$object->sef_route;
		}
		
		return $params[$name];
	}

	// getUrlVars
	public static function getUrlVars( $url, $force = false )
	{
		if ( ( $pos = strpos( $url, '?') ) !== false ) {
			$url	=	substr( $url, $pos + 1 );
		}
		$vars	=	explode( '&', $url );
		$url	=	array();
		if ( count( $vars ) ) {
			foreach ( $vars as $var ) {
				$v	=	explode( '=', $var );
				if ( $v[0] ) {
					if ( $force ) {
						$url[$v[0]]	=	(string)@$v[1];
					} else {
						$url[$v[0]]	=	@$v[1];
					}
				}
			}
		}
		$url	=	new JRegistry( $url );
		
		return $url;
	}
	
	// hasLanguageAssociations
	public static function hasLanguageAssociations()
	{
		if ( class_exists( 'JLanguageAssociations' ) ) {
			return JLanguageAssociations::isEnabled();
		} else {
			$app	=	JFactory::getApplication();
			return ( isset( $app->item_associations ) ? $app->item_associations : 0 );
		}
	}

	// isMultilingual
	public static function isMultilingual()
	{
		if ( is_object( JPluginHelper::getPlugin( 'system', 'languagefilter' ) ) ) {
			return true;
		}

		return false;
	}
	
	// matchUrlVars
	public static function matchUrlVars( $vars, $url = null )
	{
		$app	=	JFactory::getApplication();
		$custom	=	( is_object( $url ) ) ? true : false;
		$vars	=	explode( '&', $vars );
		$count	=	count( $vars );

		if ( $count ) {
			if ( $custom === false ) {
				$url	=	JUri::getInstance();
			}
			$query		=	self::getUrlVars( $url->toString(), true );

			foreach ( $vars as $var ) {
				if ( $var ) {
					if ( strpos( $var, '=' ) !== false ) {
						$v	=	explode( '=', $var );
						$x	=	( $custom !== false ) ? $url->get( $v[0], '' ) : $app->input->get( $v[0], '' );
						if ( $x == $v[1] ) {
							$count--;
						}
					} else {
						if ( $query->exists( $var ) ) {
							$count--;
						}
					}
				}
			}
		}
		if ( $count > 0 ) {
			return false;
		}
		
		return true;
	}

	// replaceLive
	public static function replaceLive( $str, $name = '', $config = array() )
	{
		$app	=	JFactory::getApplication();
		if ( !$name ) {
			$name	=	uniqid();
		}
		if ( $str != '' ) {
			$str	=	str_replace( '$uri-&gt;get', '$uri->get', $str );
			
			if ( strpos( $str, '$uri->get' ) !== false ) {
				$matches	=	'';
				$search		=	'#\$uri\->get([a-zA-Z]*)\( ?\'?([a-zA-Z0-9_]*)\'? ?\)(;)?#';
				preg_match_all( $search, $str, $matches );
				
				if ( count( $matches[1] ) ) {
					foreach ( $matches[1] as $k=>$v ) {
						$variable	=	$matches[2][$k];
						
						if ( $v == 'Current' ) {
							$request	=	( $variable == 'true' ) ? JUri::getInstance()->toString() : JUri::current();
							$str		=	str_replace( $matches[0][$k], $request, $str );
						} elseif ( $v == 'Array' ) {
							$value				=	'';
							$custom_v			=	'';
							static $custom_vars	=	array();
							
							if ( !isset( $custom_vars[$name] ) ) {
								$custom_vars[$name]	=	explode( '&', $str );
							}
							if ( count( $custom_vars[$name] ) ) {
								foreach ( $custom_vars[$name] as $custom_var ) {
									if ( strpos( $custom_var, $matches[0][$k] ) !== false ) {
										$custom_v	=	substr( $custom_var, 0, strpos( $custom_var, '=' ) );
									}
								}
							}
							if ( $custom_v != '' ) {
								$values		=	$app->input->get( $variable, '', 'array' );
								if ( is_array( $values ) && count( $values ) ) {
									foreach ( $values as $val ) {
										$value	.=	'&'.$custom_v.'[]='.$val;
									}
								}
							}
							$str		=	str_replace( '&'.$custom_v.'='.$matches[0][$k], $value, $str );
						} else {
							$request	=	'get'.$v;
							
							if ( $v == 'Int' ) {
								$str		=	str_replace( $matches[0][$k], (int)$app->input->$request( $variable, '' ), $str );
							} else {
								$str		=	str_replace( $matches[0][$k], $app->input->$request( $variable, '' ), $str );
							}
						}
					}
				}
			}
		}
		if ( $str != '' && strpos( $str, '$context->' ) !== false ) {
			if ( strpos( $str, '$context->getType()' ) !== false ) {
				$type		=	'';
				
				if ( isset( $config['client'], $config['type'] ) && !( $config['client'] == 'search' || $config['client'] == 'order' ) ) {
					$type	=	$config['type'];
				}
				if ( !$type ) {
					$type	=	$app->input->get( 'type', '' );
				}

				$str		=	str_replace( '$context->getType()', $type, $str );
			}
			if ( strpos( $str, '$context->getAuthor()' ) !== false ) {
				$author		=	'0';

				if ( isset( $config['client'], $config['type'] ) && !( $config['client'] == 'search' || $config['client'] == 'order' ) ) {
					$author	=	$config['author'];
				}
				if ( !$author ) {
					$author	=	JFactory::getUser()->id;
				}

				$str		=	str_replace( '$context->getAuthor()', $author, $str );
			}
		}
		if ( $str != '' && strpos( $str, '$user->' ) !== false ) {
			$user			=	JCck::getUser();
			if ( strpos( $str, '$user->getAuthorisedViewLevels()' ) !== false ) {
				$access		=	implode( ',', $user->getAuthorisedViewLevels() );
				$str		=	str_replace( '$user->getAuthorisedViewLevels()', $access, $str );
			}
			$matches		=	'';
			$search			=	'#\$user\->([a-zA-Z0-9_]*)#';
			preg_match_all( $search, $str, $matches );
			if ( count( $matches[1] ) ) {
				foreach ( $matches[1] as $k=>$v ) {
					$str	=	str_replace( $matches[0][$k], $user->$v, $str );
				}
			}
		}
		if ( $str != '' && strpos( $str, '$site->' ) !== false ) {
			$site	=	JCck::getSite();
			if ( strpos( $str, '$site->getViewLevels()' ) !== false ) {
				$access		=	$site->viewlevels;
				if ( $site->guest_only_viewlevel ) {
					$access	.=	','.$site->guest_only_viewlevel;
				}
				$str		=	str_replace( '$site->getViewLevels()', $access, $str );
			}
			$matches		=	'';
			$search			=	'#\$site\->([a-zA-Z0-9_]*)#';
			preg_match_all( $search, $str, $matches );
			if ( count( $matches[1] ) ) {
				foreach ( $matches[1] as $k=>$v ) {
					$v2		=	( isset( $site->$v ) ) ? $site->$v : '';
					$str	=	str_replace( $matches[0][$k], $v2, $str );
				}
			}
		}
		if ( $str != '' && strpos( $str, 'J(' ) !== false ) {
			$matches	=	'';
			$search		=	'#J\((.*)\)#U';
			preg_match_all( $search, $str, $matches );
			if ( count( $matches[1] ) ) {
				foreach ( $matches[1] as $text ) {
					$str	=	str_replace( 'J('.$text.')', JText::_( 'COM_CCK_' . str_replace( ' ', '_', trim( $text ) ) ), $str );
				}
			}
		}

		return $str;
	}

	// secureField
	public static function secureField( $field, $value )
	{
		JFactory::getSession()->set( 'cck_hash_live_'.$field->name, JApplication::getHash( $value ) );
	}

	// setDynamicVars
	public static function setDynamicVars( &$vars, $format, $parameters, $fields )
	{
		$app	=	JFactory::getApplication();

		if ( is_array( $format ) ) {
			$format_params	=	$format['options'];
			$format			=	$format['format'];
			$format			=	str_replace(
									array( 'nvp_array', 'nvp_object' ),
									array( 'kvp_array', 'kvp_object' ),
									$format
								);
		}
		$format				=	str_replace( 'nvp', 'kvp', $format );
		if ( $format == 'array' || $format == 'kvp_array' || $format == 'kvp_object' ) {
			if ( !is_array( $vars ) ) {
				$vars	=	array();
			}
		} elseif ( $format == 'object'  ) {
			if ( !is_object( $vars ) ) {
				$vars	=	new stdClass;
			}
		} else {
			if ( !is_string( $vars ) ) {
				$vars	=	'';
			}
		}
		if ( $app->isClient( 'site' ) && JCck::isSite() ) {
			$site			=	JCck::getSite();
			$site_options	=	( is_object( $site ) ) ? new JRegistry( $site->options ) : new JRegistry;
		} else {
			$site_options	=	new JRegistry;
		}

		foreach ( $parameters as $k=>$p ) {
			$v	=	'';
			
			if ( $p['type'] == 'site' ) {
				$v	=	$site_options->get( $p['value'] );
			} elseif ( $p['type'] == 'field' ) {
				if ( isset( $fields[$p['value']] ) ) {
					$v	=	$fields[$p['value']]->value;
				}
			} else {
				$v	=	$p['value'];
			}

			if ( $format == 'array' ) {
				$vars[$k]	=	$v;
			} elseif ( $format == 'object' ) {
				$vars->$k	=	$v;
			} elseif ( $format == 'kvp_array' ) {
				$vars[]		=	array( $format_params['key']=>$k, $format_params['value']=>$v );
			} elseif ( $format == 'kvp_object' ) {
				$vars[]		=	(object)array( $format_params['key']=>$k, $format_params['value']=>$v );
			} elseif ( $format == 'kvp_string' ) {
				$vars		.=	$k.'='.urlencode( $v ).'&';
			} else {
				$vars		=	$v;
			}
		}
		if ( $format == 'kvp_string' && $vars != '' ) {
			$vars	=	substr( $vars, 0, -1 );
		}
	}

	// setLanguage
	public static function setLanguage( $tag )
	{
		$app	=	JFactory::getApplication();
		$lang	=	JLanguage::getInstance( $tag );
		
		$app->loadLanguage( $lang );
		JFactory::$language	=	$app->getLanguage();
		
		JFactory::getConfig()->set( 'language', $tag );
		JFactory::getLanguage()->setLanguage( $tag );
	}

	// sortObjectsByProperty
	public static function sortObjectsByProperty( &$array, $property )
	{
		if ( count( $array ) ) {
			foreach ( $array as $k=>$v ) {
				$v->_index	=	str_pad( $k, 3, '0' , STR_PAD_LEFT );
			}
		}

		$array	=	self::_sortHelper( $array, $property, '_index' );
	}

	// _sortHelper
	protected static function _sortHelper()
	{
		$args	=	func_get_args();
		$array	=	array_splice( $args, 0, 1 ); 
		$array	=	$array[0];
		
		usort( $array, function( $a, $b ) use( $args ) {
			$i		=	0;
			$count	=	count( $args );
			$diff	=	0;
			
			while ( $diff == 0 && $i < $count ) { 
				$diff	=	strcmp( $a->{$args[$i]}, $b->{$args[$i]} );
				$i++;
			}

			return $diff;
		});

		return $array;
	}
}
?>