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Current File : /var/www/wp-content/plugins/wp-all-export/libraries/XmlCsvExport.php
<?php

final Class XmlCsvExport
{
	public static $main_xml_tag = '';

	public static $node_xml_tag = '';

	/** @var  \Wpae\Csv\CsvWriter */
	private static $csvWriter;

	public static function export()
	{
		switch ( XmlExportEngine::$exportOptions['export_to'] )
		{
			case 'xml':						
				self::export_xml();
				break;

			case XmlExportEngine::EXPORT_TYPE_CSV:
				self::export_csv();								
				break;
			default:
				# code...
				break;
		}
	}

	public static function export_csv( $preview = false, $is_cron = false, $file_path = false, $exported_by_cron = 0 )
	{
		
		if ( XmlExportEngine::$exportOptions['delimiter'] == '\t' ) XmlExportEngine::$exportOptions['delimiter'] = "\t";

		ob_start();

		$stream = fopen("php://output", 'w');
		
		$headers 	= array();
		$woo 		= array();
		$woo_order  = array();
		$acfs 		= array();
		$articles 	= array();

		// [ Exporting requested data ]

		if ( XmlExportEngine::$is_user_export )  { // exporting WordPress users

			foreach ( XmlExportEngine::$exportQuery->results as $user ) {
                $articles[] = XmlExportUser::prepare_data($user, XmlExportEngine::$exportOptions ,false, $acfs, XmlExportEngine::$implode, $preview);
                $articles = apply_filters('wp_all_export_csv_rows', $articles, XmlExportEngine::$exportOptions, XmlExportEngine::$exportID);
                if (!$preview) do_action('pmxe_exported_post', $user->ID, XmlExportEngine::$exportRecord);
            }
		}
		elseif ( XmlExportEngine::$is_comment_export ) {  // exporting comments
			die(\__('WP All Export Pro is required to run this export. If you already own it, you can download it here: <a href="http://www.wpallimport.com/portal/downloads" target="_blank">http://www.wpallimport.com/portal/downloads</a>', 'wp_all_export_plugin'));
		}
		elseif ( XmlExportEngine::$is_taxonomy_export )  { // exporting WordPress taxonomy terms

            add_filter('terms_clauses', 'wp_all_export_terms_clauses', 10, 3);
            $terms = XmlExportEngine::$exportQuery->get_terms();
            remove_filter('terms_clauses', 'wp_all_export_terms_clauses');
            foreach ( $terms as $term ) {
                $articles[] = XmlExportTaxonomy::prepare_data($term, false, $acfs, XmlExportEngine::$implode, $preview);
                $articles = apply_filters('wp_all_export_csv_rows', $articles, XmlExportEngine::$exportOptions, XmlExportEngine::$exportID);
                if (!$preview) do_action('pmxe_exported_post', $term->term_id, XmlExportEngine::$exportRecord);
            }
        }
        elseif (XmlExportEngine::$is_custom_addon_export) {

            foreach (XmlExportEngine::$exportQuery->results as $record) {

                $articles[] = XmlExportCustomRecord::prepare_data($record, XmlExportEngine::$exportOptions, false, $acfs, XmlExportEngine::$implode, $preview);
                $articles = apply_filters('wp_all_export_csv_rows', $articles, XmlExportEngine::$exportOptions, XmlExportEngine::$exportID);
                if (!$preview) do_action('pmxe_exported_post', $record->id, XmlExportEngine::$exportRecord);
            }
        }
		else  { // exporting custom post types

			$exportOptions = XmlExportEngine::$exportOptions;

			if($exportOptions['export_type'] != 'advanced' && in_array('shop_order', $exportOptions['cpt']) && PMXE_Plugin::hposEnabled()) {


				$exported = 0;
				if(is_object(XmlExportEngine::$exportRecord)) {
					$exported = XmlExportEngine::$exportRecord->exported;
				}

				$orders = XmlExportEngine::$exportQuery->getOrders($exported, $exportOptions['records_per_iteration']);

				foreach ($orders as $record) {

					if(!isset($record->ID)) {
						$recordId = $record->id;
					} else {
						$recordId = $record->ID;
					}
					$articles[] = XmlExportCpt::prepare_data($record, $exportOptions, false, $acfs, $woo, $woo_order, XmlExportEngine::$implode, $preview);
					$articles = apply_filters('wp_all_export_csv_rows', $articles, XmlExportEngine::$exportOptions, XmlExportEngine::$exportID);
					if (!$preview) do_action('pmxe_exported_post', $recordId, XmlExportEngine::$exportRecord);
				}

			} else {
				while ( XmlExportEngine::$exportQuery->have_posts() ) {
					XmlExportEngine::$exportQuery->the_post();
					$record     = get_post( get_the_ID() );
					$articles[] = XmlExportCpt::prepare_data( $record, XmlExportEngine::$exportOptions, false, $acfs, $woo, $woo_order, XmlExportEngine::$implode, $preview );
					$articles   = apply_filters( 'wp_all_export_csv_rows', $articles, XmlExportEngine::$exportOptions, XmlExportEngine::$exportID );
					if ( ! $preview ) {
						do_action( 'pmxe_exported_post', $record->ID, XmlExportEngine::$exportRecord );
					}
				}
			}

			wp_reset_postdata();
        }
		// [ \Exporting requested data ]		

		// [ Prepare CSV headers ]
		if (XmlExportEngine::$exportOptions['ids']):

			foreach (XmlExportEngine::$exportOptions['ids'] as $ID => $value)
			{
				if ( empty(XmlExportEngine::$exportOptions['cc_name'][$ID]) or empty(XmlExportEngine::$exportOptions['cc_type'][$ID]) or ! is_numeric($ID) ) continue;

				self::prepare_csv_headers( $headers, $ID, $acfs );
			}

		endif;

		$headers = apply_filters( 'wp_all_export_csv_headers', $headers, XmlExportEngine::$exportID );

		if ($is_cron) {
			if ( ! $exported_by_cron ) {
				self::getCsvWriter()->writeCsv($stream, array_map(array('XmlCsvExport', '_get_valid_header_name'), $headers), XmlExportEngine::$exportOptions['delimiter']);
				apply_filters('wp_all_export_after_csv_line', $stream, XmlExportEngine::$exportID);
			}
			else {
				self::merge_headers( $file_path, $headers );
			}
		}
		else
		{
			if ($preview or empty(PMXE_Plugin::$session->file)) {
				self::getCsvWriter()->writeCsv($stream, array_map(array('XmlCsvExport', '_get_valid_header_name'), $headers), XmlExportEngine::$exportOptions['delimiter']);
				apply_filters('wp_all_export_after_csv_line', $stream, XmlExportEngine::$exportID);
			}
			else {
				self::merge_headers( PMXE_Plugin::$session->file, $headers );
			}
		}

		// [ \Prepare CSV headers ]				
        if (!empty($articles)) {
            foreach ($articles as $article) { if (empty($article)) continue;
                $line = array();
                foreach ($headers as $header) {
                    $line[$header] = (isset($article[$header])) ? $article[$header] : '';
                }
				self::getCsvWriter()->writeCsv($stream, $line, XmlExportEngine::$exportOptions['delimiter']);
                apply_filters('wp_all_export_after_csv_line', $stream, XmlExportEngine::$exportID);
            }
        }

		if ($preview) return ob_get_clean();

		return self::save_csv_to_file( $file_path, $is_cron, $exported_by_cron );

	}
	
	public static function export_xml( $preview = false, $is_cron = false, $file_path = false, $exported_by_cron = 0 )
	{
		$is_custom_xml = ( ! empty(XmlExportEngine::$exportOptions['xml_template_type']) && in_array(XmlExportEngine::$exportOptions['xml_template_type'], array('custom', 'XmlGoogleMerchants')) ) ? true : false;

		if ( ! empty(XmlExportEngine::$exportOptions['xml_template_type']) ){

			switch (XmlExportEngine::$exportOptions['xml_template_type']) {
				case 'custom':
                case 'XmlGoogleMerchants':
					XmlExportEngine::$exportOptions['ids'] 		   = XmlExportEngine::$exportOptions['custom_xml_template_options']['ids'];
					XmlExportEngine::$exportOptions['cc_label']    = XmlExportEngine::$exportOptions['custom_xml_template_options']['cc_label'];
					XmlExportEngine::$exportOptions['cc_type'] 	   = XmlExportEngine::$exportOptions['custom_xml_template_options']['cc_type'];
					XmlExportEngine::$exportOptions['cc_value']    = XmlExportEngine::$exportOptions['custom_xml_template_options']['cc_value'];
					XmlExportEngine::$exportOptions['cc_name'] 	   = XmlExportEngine::$exportOptions['custom_xml_template_options']['cc_name'];
					XmlExportEngine::$exportOptions['cc_php']      = XmlExportEngine::$exportOptions['custom_xml_template_options']['cc_php'];
					XmlExportEngine::$exportOptions['cc_code']     = XmlExportEngine::$exportOptions['custom_xml_template_options']['cc_code'];
					XmlExportEngine::$exportOptions['cc_sql']      = XmlExportEngine::$exportOptions['custom_xml_template_options']['cc_sql'];
					XmlExportEngine::$exportOptions['cc_options']  = XmlExportEngine::$exportOptions['custom_xml_template_options']['cc_options'];
					XmlExportEngine::$exportOptions['cc_settings'] = XmlExportEngine::$exportOptions['custom_xml_template_options']['cc_settings'];
					break;
				default:
					# code...
					break;
			}
		}			

		if ( XmlExportEngine::$exportOptions['delimiter'] == '\t' ) XmlExportEngine::$exportOptions['delimiter'] = "\t";

		require_once PMXE_ROOT_DIR . '/classes/XMLWriter.php';
		
		$woo 		= array();
		$woo_order  = array();
		$acfs 		= array();

		self::$main_xml_tag = apply_filters('wp_all_export_main_xml_tag', XmlExportEngine::$exportOptions['main_xml_tag'], XmlExportEngine::$exportID);
		self::$node_xml_tag = apply_filters('wp_all_export_record_xml_tag', XmlExportEngine::$exportOptions['record_xml_tag'], XmlExportEngine::$exportID);

//        self::$implode = (XmlExportEngine::$exportOptions['delimiter'] == ',') ? '|' : ',';
//
//        if ( $is_custom_xml ) self::$implode = '#delimiter#';

		$xmlWriter = new PMXE_XMLWriter();

		if ( ! $is_custom_xml ) {

			$xmlWriter->openMemory();
			$xmlWriter->setIndent(true);
			$xmlWriter->setIndentString("\t");
			$xmlWriter->startDocument('1.0', XmlExportEngine::$exportOptions['encoding']);
			$xmlWriter->startElement(self::$main_xml_tag);								
			// add additional data after XML root element
			self::xml_header( $xmlWriter, $is_cron, $exported_by_cron );
		}

		// [ Exporting requested data ]

		if ( XmlExportEngine::$is_user_export ) // exporting WordPress users
		{
			foreach ( XmlExportEngine::$exportQuery->results as $user ) :

				$is_export_record = apply_filters('wp_all_export_xml_rows', true, $user, XmlExportEngine::$exportOptions, XmlExportEngine::$exportID);		

				if ( ! $is_export_record ) continue;
				
				if ( ! $is_custom_xml ) {
					// add additional information before each node
					self::before_xml_node( $xmlWriter, $user->ID);				

					$xmlWriter->startElement(self::$node_xml_tag);

					XmlExportUser::prepare_data( $user, XmlExportEngine::$exportOptions, $xmlWriter, $acfs, XmlExportEngine::$implode, $preview );

					$xmlWriter->closeElement(); // end post

					// add additional information after each node			
					self::after_xml_node( $xmlWriter, $user->ID);													
				}
				else {
					$articles = array();
					$articles[] = XmlExportUser::prepare_data( $user, XmlExportEngine::$exportOptions, $xmlWriter, $acfs, XmlExportEngine::$implode, $preview );
					$articles = apply_filters('wp_all_export_csv_rows', $articles, XmlExportEngine::$exportOptions, XmlExportEngine::$exportID);										

					$xmlWriter->writeArticle( $articles );
				}

				if ( ! $preview) do_action('pmxe_exported_post', $user->ID, XmlExportEngine::$exportRecord );

			endforeach;
			
		}
		elseif ( XmlExportEngine::$is_taxonomy_export ) // exporting WordPress taxonomy terms
        {
            add_filter('terms_clauses', 'wp_all_export_terms_clauses', 10, 3);
            $terms = XmlExportEngine::$exportQuery->get_terms();
            remove_filter('terms_clauses', 'wp_all_export_terms_clauses');
            foreach ( $terms as $term ) {

                $is_export_record = apply_filters('wp_all_export_xml_rows', true, $term, XmlExportEngine::$exportOptions, XmlExportEngine::$exportID);

                if (!$is_export_record) continue;

                if (!$is_custom_xml) {
                    // add additional information before each node
                    self::before_xml_node($xmlWriter, $term->term_id);

                    $xmlWriter->startElement(self::$node_xml_tag);

                    XmlExportTaxonomy::prepare_data($term, $xmlWriter, $acfs, XmlExportEngine::$implode, $preview);

                    $xmlWriter->closeElement(); // end post

                    // add additional information after each node
                    self::after_xml_node($xmlWriter, $term->term_id);
                } else {
                    $articles = array();
                    $articles[] = XmlExportTaxonomy::prepare_data($term, $xmlWriter, $acfs, XmlExportEngine::$implode, $preview);
                    $articles = apply_filters('wp_all_export_csv_rows', $articles, XmlExportEngine::$exportOptions, XmlExportEngine::$exportID);

                    $xmlWriter->writeArticle($articles);
                }

                if (!$preview) do_action('pmxe_exported_post', $term->term_id, XmlExportEngine::$exportRecord);

            }

        } else if ( XmlExportEngine::$exportOptions['export_type'] != 'advanced' && XmlExportEngine::$is_woo_order_export && PMXE_Plugin::hposEnabled() ) {
			add_filter( 'posts_where', 'wp_all_export_numbering_where', 15, 1 );


			$exported = 0;
			if ( is_object( XmlExportEngine::$exportRecord ) ) {
				$exported = XmlExportEngine::$exportRecord->exported;
			}
			$orders = XmlExportEngine::$exportQuery->getOrders( $exported, XmlExportEngine::$exportOptions['records_per_iteration'] );

			foreach ( $orders as $record ) {

				if ( ! isset( $record->ID ) ) {
					$recordId = $record->id;
				} else {
					$recordId = $record->ID;
				}

				if ( ! $is_custom_xml ) {
					// add additional information before each node
					self::before_xml_node( $xmlWriter, $record->id );
					$xmlWriter->startElement( self::$node_xml_tag );

					XmlExportCpt::prepare_data( $record, XmlExportEngine::$exportOptions, $xmlWriter, $acfs, $woo, $woo_order, XmlExportEngine::$implode, $preview );

					$xmlWriter->closeElement(); // end post

					// add additional information after each node
					self::after_xml_node( $xmlWriter, $record->id );
				} else {
					$articles = [];
					$articles[] = XmlExportCpt::prepare_data( $record, XmlExportEngine::$exportOptions, false, $acfs, $woo, $woo_order, XmlExportEngine::$implode, $preview );
					$articles   = apply_filters( 'wp_all_export_csv_rows', $articles, XmlExportEngine::$exportOptions, XmlExportEngine::$exportID );
					$xmlWriter->writeArticle( $articles );
				}

				if ( ! $preview ) {
					do_action( 'pmxe_exported_post', $recordId, XmlExportEngine::$exportRecord );
				}
			}
		} elseif (XmlExportEngine::$is_custom_addon_export) {

            foreach (XmlExportEngine::$exportQuery->results as $record) {

                $is_export_record = apply_filters('wp_all_export_xml_rows', true, $record, XmlExportEngine::$exportOptions, XmlExportEngine::$exportID);

                if (!$is_export_record) continue;

                if (!$is_custom_xml) {
                    // add additional information before each node
                    self::before_xml_node($xmlWriter, $record->id);
                    $xmlWriter->startElement(self::$node_xml_tag);

                    XmlExportCustomRecord::prepare_data($record, XmlExportEngine::$exportOptions, $xmlWriter, XmlExportEngine::$implode, $preview);

                    $xmlWriter->closeElement(); // end post

                    // add additional information after each node
                    self::after_xml_node($xmlWriter, $record->id);
                } else {
                    $articles = array();
                    $articles[] = XmlExportCustomRecord::prepare_data($record, XmlExportEngine::$exportOptions, $xmlWriter, XmlExportEngine::$implode, $preview);
                    $articles = apply_filters('wp_all_export_csv_rows', $articles, XmlExportEngine::$exportOptions, XmlExportEngine::$exportID);

                    $xmlWriter->writeArticle($articles);
                }

                if (!$preview) {
                    do_action('pmxe_exported_post', $record->id, XmlExportEngine::$exportRecord);
                }
            }
        }
		elseif ( XmlExportEngine::$is_comment_export ) // exporting comments
		{
			die(\__('WP All Export Pro is required to run this export. If you already own it, you can download it here: <a href="http://www.wpallimport.com/portal/downloads" target="_blank">http://www.wpallimport.com/portal/downloads</a>', 'wp_all_export_plugin'));
		}
		else {// exporting custom post types
			while ( XmlExportEngine::$exportQuery->have_posts() ) {
                XmlExportEngine::$exportQuery->the_post();
                $record = get_post(get_the_ID());

                $is_export_record = apply_filters('wp_all_export_xml_rows', true, $record, XmlExportEngine::$exportOptions, XmlExportEngine::$exportID);

                if (!$is_export_record) continue;

                if (!$is_custom_xml) {
                    // add additional information before each node
                    self::before_xml_node($xmlWriter, $record->ID);
                    $xmlWriter->startElement(self::$node_xml_tag);
                    XmlExportCpt::prepare_data($record, XmlExportEngine::$exportOptions, $xmlWriter, $acfs, $woo, $woo_order, XmlExportEngine::$implode, $preview);
                    
                    $xmlWriter->closeElement(); // end post

                    // add additional information after each node
                    self::after_xml_node($xmlWriter, $record->ID);
                } else {
                    $articles = array();
                    $articles[] = XmlExportCpt::prepare_data($record, XmlExportEngine::$exportOptions, $xmlWriter, $acfs, $woo, $woo_order, XmlExportEngine::$implode, $preview);
                    $articles = apply_filters('wp_all_export_csv_rows', $articles, XmlExportEngine::$exportOptions, XmlExportEngine::$exportID);

                    $xmlWriter->writeArticle($articles);
                }

                if (!$preview) do_action('pmxe_exported_post', $record->ID, XmlExportEngine::$exportRecord);
            }
			wp_reset_postdata();		
		}
		// [ \Exporting requested data ]

		if ( ! $is_custom_xml ) $xmlWriter->closeElement(); // close root XML element		

		if ($preview) {
			return $xmlWriter->wpae_flush();
		}

		return self::save_xml_to_file( $xmlWriter, $file_path, $is_cron, $exported_by_cron );
			
	}

	// [ XML Export Helpers ]
	private static function xml_header($xmlWriter, $is_cron, $exported_by_cron)
	{		
		if ($is_cron) {
			if ( ! $exported_by_cron ) {

				$additional_data = apply_filters('wp_all_export_additional_data', array(), XmlExportEngine::$exportOptions, XmlExportEngine::$exportID);

				if ( ! empty($additional_data)) {
					foreach ($additional_data as $key => $value) {
                        self::addElement($xmlWriter, $key, $value);
					}
				}
			}					
		}
		else
		{

			if ( empty(PMXE_Plugin::$session->file) ){

				$additional_data = apply_filters('wp_all_export_additional_data', array(), XmlExportEngine::$exportOptions, XmlExportEngine::$exportID);

				if ( ! empty($additional_data)) {
					foreach ($additional_data as $key => $value) {
                        self::addElement($xmlWriter, $key, $value);
					}
				}
			}
		}
	}

	private static function before_xml_node( $xmlWriter, $pid )
	{
		$add_before_node = apply_filters('wp_all_export_add_before_node', array(), XmlExportEngine::$exportOptions, XmlExportEngine::$exportID, $pid);

		if ( ! empty($add_before_node)) {
			foreach ($add_before_node as $key => $value) {
                self::addElement($xmlWriter, $key, $value);
			}
		}
	}

	private static function after_xml_node( $xmlWriter, $pid )
	{
		$add_after_node = apply_filters('wp_all_export_add_after_node', array(), XmlExportEngine::$exportOptions, XmlExportEngine::$exportID, $pid);

		if ( ! empty($add_after_node)) {
			foreach ($add_after_node as $key => $value) {
                self::addElement($xmlWriter, $key, $value);
			}
		}
	}

	private static function save_xml_to_file( $xmlWriter, $file_path, $is_cron, $exported_by_cron )
	{
		$is_custom_xml = in_array(XmlExportEngine::$exportOptions['xml_template_type'], array('custom', 'XmlGoogleMerchants'));

		if ($is_cron)
		{
			if ( ! $is_custom_xml ) {
				$xml_header = apply_filters('wp_all_export_xml_header', '<?xml version="1.0" encoding="UTF-8"?>', XmlExportEngine::$exportID);

				$xml = str_replace('<?xml version="1.0" encoding="UTF-8"?>', $xml_header, $xmlWriter->wpae_flush());
			}							
			else {
				$xml_header = XmlExportEngine::$exportOptions['custom_xml_template_header'];

				$xml = ( ! $exported_by_cron ) ? PMXE_XMLWriter::preprocess_xml($xml_header) . $xmlWriter->wpae_flush() : $xmlWriter->wpae_flush();
			}

			if ( ! $exported_by_cron ) {
				if ( ! $is_custom_xml ) $xml = substr($xml, 0, (strlen(self::$main_xml_tag) + 4) * (-1));

				// The BOM will help some programs like Microsoft Excel read your export file if it includes non-English characters.
				if (XmlExportEngine::$exportOptions['include_bom']) {
					file_put_contents($file_path, chr(0xEF).chr(0xBB).chr(0xBF).$xml);
				}
				else {
					file_put_contents($file_path, $xml);
				}			
			}
			else {
				$xml = ( ! $is_custom_xml ) ? substr(substr($xml, 41 + strlen(self::$main_xml_tag)), 0, (strlen(self::$main_xml_tag) + 4) * (-1)) : $xml;
				file_put_contents($file_path, $xml, FILE_APPEND);
			}
			
			return $file_path;	
			
		}
		else {

			if ( empty(PMXE_Plugin::$session->file) ){

				// generate export file name
				$export_file = wp_all_export_generate_export_file( XmlExportEngine::$exportID );			

				if ( ! $is_custom_xml ) {
					$xml_header = apply_filters('wp_all_export_xml_header', '<?xml version="1.0" encoding="UTF-8"?>', XmlExportEngine::$exportID);

					$xml = str_replace('<?xml version="1.0" encoding="UTF-8"?>', $xml_header, $xmlWriter->wpae_flush());
				}	
				else {
					$xml_header = XmlExportEngine::$exportOptions['custom_xml_template_header'];

					$xml = PMXE_XMLWriter::preprocess_xml($xml_header) . $xmlWriter->wpae_flush();
				}

				if ( ! $is_custom_xml ) $xml = substr($xml, 0, (strlen(self::$main_xml_tag) + 4) * (-1));
				
				// The BOM will help some programs like Microsoft Excel read your export file if it includes non-English characters.
				if (XmlExportEngine::$exportOptions['include_bom']) {
					file_put_contents($export_file, chr(0xEF).chr(0xBB).chr(0xBF).$xml);
				}
				else {
					file_put_contents($export_file, $xml);
				}						

				PMXE_Plugin::$session->set('file', $export_file);
				PMXE_Plugin::$session->save_data();

			}	
			else {
				$xml = ( ! $is_custom_xml ) ? substr(substr($xmlWriter->wpae_flush(), 41 + strlen(self::$main_xml_tag)), 0, (strlen(self::$main_xml_tag) + 4) * (-1)) : $xmlWriter->wpae_flush();
				
				file_put_contents(PMXE_Plugin::$session->file, $xml, FILE_APPEND);
			}

			return true;

		}
	}
	// [ \XML Export Helpers ]

	// [ CSV Export Helpers ]
	public static function prepare_csv_headers( & $headers, $ID, &$acfs )
	{									
		$element_name = ( ! empty(XmlExportEngine::$exportOptions['cc_name'][$ID]) ) ? XmlExportEngine::$exportOptions['cc_name'][$ID] : 'untitled_' . $ID;
        $element_name = apply_filters('wp_all_export_field_name', wp_all_export_parse_field_name($element_name), XmlExportEngine::$exportID);

		if ( strpos(XmlExportEngine::$exportOptions['cc_label'][$ID], "item_data__") !== false ) {
			XmlExportEngine::$woo_order_export->get_element_header( $headers, XmlExportEngine::$exportOptions, $ID );
			return;
		}	
		
		switch (XmlExportEngine::$exportOptions['cc_type'][$ID]) 
		{					
			case 'woo':
			    if(XmlExportEngine::$woo_export) {
                    XmlExportEngine::$woo_export->get_element_header($headers, XmlExportEngine::$exportOptions, $ID);
                }
				break;

			case 'woo_order':
			    if(XmlExportEngine::$woo_order_export) {
                    XmlExportEngine::$woo_order_export->get_element_header($headers, XmlExportEngine::$exportOptions, $ID);
                }
				break;

			case 'acf':
				if ( ! empty($acfs) ) {
					$single_acf_field = array_shift($acfs);								

					if ( is_array($single_acf_field)) {
						foreach ($single_acf_field as $acf_header) {
							if ( ! in_array($acf_header, $headers)) $headers[] = $acf_header;
						}
					}
					else {
						if ( ! in_array($single_acf_field, $headers)) $headers[] = $single_acf_field;
					}
				}
				break;
			
			default:

			    // For ID columns make first element in lowercase for Excel export
				if ($element_name == 'ID' && ! $ID && isset(XmlExportEngine::$exportOptions['export_to_sheet']) && XmlExportEngine::$exportOptions['export_to_sheet'] != 'csv'){
                    $element_name = 'id';
                }

				if ( ! in_array($element_name, $headers)) {
					$headers[] = $element_name;
				}
				else {
					$is_added = false;
					$i = 0;
					do {
						$new_element_name = $element_name . '_' . md5($i);

						if ( ! in_array($new_element_name, $headers) ) {
							$headers[] = $new_element_name;
							$is_added = true;
						}

						$i++;
					}
					while ( ! $is_added );						
				}

//				if ( XmlExportEngine::$exportOptions['cc_label'][$ID] == 'product_type' and ! in_array('parent_id', $headers)) {
//					$headers[] = 'parent_id';
//				}

				break;
		}		
											
	}

	public static function _get_valid_header_name( $element_name )
	{		
		$element_name_parts = explode("_", $element_name);				
				
		$elementIndex = array_pop($element_name_parts);
		
		if (wp_all_export_isValidMd5($elementIndex)) {
			$element_name_in_file = str_replace("_" . $elementIndex, "", $element_name);
		}										
		else {
			$element_name_in_file = $element_name;
		}

		$element_name_in_file = XmlExportEngine::sanitizeFieldName($element_name_in_file);
		
		return $element_name_in_file;
	}


		// Add missing ACF headers
	public static function merge_headers( $file, &$headers )
	{				

		$in  = fopen($file, 'r');			

		$clear_old_headers = fgetcsv($in, 0, XmlExportEngine::$exportOptions['delimiter']);		

		fclose($in);		

		$old_headers = array();
		$sanitized_headers = array();
        $urldecoded_sanitized_headers = array();

        foreach($headers as $header) {
            $sanitizedHeaderValue = str_replace("'", "", str_replace('"', "", str_replace(chr(0xEF) . chr(0xBB) . chr(0xBF), "", $header)));
            $sanitized_headers[] = $sanitizedHeaderValue;
            $urldecoded_sanitized_headers[] = urldecode($sanitizedHeaderValue);

        }
		foreach ($clear_old_headers as $i => $header) {
			$header = str_replace("'", "", str_replace('"', "", str_replace(chr(0xEF).chr(0xBB).chr(0xBF), "", $header)));

			if ( ! in_array($header, $old_headers)) {
				$old_headers[] = $header;
			}
			else {
				$is_added = false;
				$i = 0;
				do {
					$new_element_name = $header . '_' . md5($i);

					if ( ! in_array($new_element_name, $old_headers) ) {
						$old_headers[] = str_replace("'", "", str_replace('"', "", str_replace(chr(0xEF).chr(0xBB).chr(0xBF), "", $new_element_name)));
						$is_added = true;
					}

					$i++;
				}
				while ( ! $is_added );						
			}
		}

		$is_update_headers = false;

		foreach ($sanitized_headers as $header) {
			if ( ! in_array(XmlExportEngine::sanitizeFieldName($header), $old_headers)) {
				$is_update_headers = true;
				break;
			}
		}

		foreach ($old_headers as $old_header) {
			if ( ! in_array(XmlExportEngine::sanitizeFieldName($old_header), $urldecoded_sanitized_headers)) {
				$is_update_headers = true;
				break;
			}
		}

		if ($is_update_headers) {
            $tmp_headers = $headers;
            $headers = $old_headers;
            foreach ($tmp_headers as $theader){
                if (!in_array(XmlExportEngine::sanitizeFieldName($theader), $headers)) $headers[] = $theader;
            }
			$tmp_file = str_replace(basename($file), 'iteration_' . basename($file), $file);
			copy($file, $tmp_file);
			$in  = fopen($tmp_file, 'r');
			$out = fopen($file, 'w');
			$headers = apply_filters('wp_all_export_csv_headers', $headers, XmlExportEngine::$exportID);

			if ( XmlExportEngine::$exportOptions['include_bom'] ) {
                fwrite($out, chr(0xEF).chr(0xBB).chr(0xBF));
				self::getCsvWriter()->writeCsv($out, array_map(array('XmlCsvExport', '_get_valid_header_name'), $headers), XmlExportEngine::$exportOptions['delimiter']);
			}
			else {
				self::getCsvWriter()->writeCsv($out, array_map(array('XmlCsvExport', '_get_valid_header_name'), $headers), XmlExportEngine::$exportOptions['delimiter']);
			}						

			apply_filters('wp_all_export_after_csv_line', $out, XmlExportEngine::$exportID);

			$exclude_old_headers = fgetcsv($in);		

			if (is_resource($in)) {
				while ( ! feof($in) ) {
				    $data = fgetcsv($in, 0, XmlExportEngine::$exportOptions['delimiter']);	
					if ( empty($data) ) continue;
				    $data_assoc = array_combine($old_headers, array_values($data));	    			    			    			    
				    $line = array();
					foreach ($headers as $header) {					
						$line[$header] = ( isset($data_assoc[$header]) ) ? $data_assoc[$header] : '';	
					}
					self::getCsvWriter()->writeCsv($out, $line, XmlExportEngine::$exportOptions['delimiter']);
					apply_filters('wp_all_export_after_csv_line', $out, XmlExportEngine::$exportID);
				}
				fclose($in);
			}	
			fclose($out);
			@unlink($tmp_file);
		}								
	}

	private static function save_csv_to_file( $file_path, $is_cron, $exported_by_cron )
	{
		if ($is_cron) {
			if ( ! $exported_by_cron ) {
				// The BOM will help some programs like Microsoft Excel read your export file if it includes non-English characters.					
				if (XmlExportEngine::$exportOptions['include_bom']) {
					file_put_contents($file_path, chr(0xEF).chr(0xBB).chr(0xBF).ob_get_clean());
				}
				else {
					file_put_contents($file_path, ob_get_clean());
				}			
			}
			else {
				file_put_contents($file_path, ob_get_clean(), FILE_APPEND);
			}

			return $file_path;

		}
		else
		{						
			if ( empty(PMXE_Plugin::$session->file) ){		

				// generate export file name
				$export_file = wp_all_export_generate_export_file( XmlExportEngine::$exportID );			

				// The BOM will help some programs like Microsoft Excel read your export file if it includes non-English characters.					
				if (XmlExportEngine::$exportOptions['include_bom']) {
					file_put_contents($export_file, chr(0xEF).chr(0xBB).chr(0xBF).ob_get_clean());
				}
				else {
					file_put_contents($export_file, ob_get_clean());
				}

				PMXE_Plugin::$session->set('file', $export_file);
				PMXE_Plugin::$session->save_data();

			}	
			else {
				file_put_contents(PMXE_Plugin::$session->file, ob_get_clean(), FILE_APPEND);
			}

			return true;
		}
	}
    // [ \CSV Export Helpers ]

    public static function auto_generate_export_fields($post, $errors = false)
    {
        $errors or $errors = new WP_Error();

        remove_all_filters("wp_all_export_init_fields", 10);
        remove_all_filters("wp_all_export_default_fields", 10);
        remove_all_filters("wp_all_export_other_fields", 10);
        remove_all_filters("wp_all_export_available_sections", 10);
        remove_all_filters("wp_all_export_available_data", 10);

        $engine = new XmlExportEngine($post, $errors);
        $engine->init_additional_data();

        $auto_generate = array(
            'ids' => array(),
            'cc_label' => array(),
            'cc_php' => array(),
            'cc_code' => array(),
            'cc_sql' => array(),
            'cc_type' => array(),
            'cc_options' => array(),
            'cc_value' => array(),
            'cc_name' => array()
        );

        $available_data = $engine->init_available_data();

        $available_sections = apply_filters("wp_all_export_available_sections", $engine->get('available_sections'));

        foreach ($available_sections as $slug => $section) {
            if (!empty($section['content']) and !empty($available_data[$section['content']])) {
                foreach ($available_data[$section['content']] as $field) {
                    if(is_string($post['cpt'])) {
                        $post['cpt'] = [$post['cpt']];
                    }
                    if (is_array($field) and (isset($field['auto']) or (!in_array('product', $post['cpt']) || !\class_exists('WooCommerce')))) {
                        $auto_generate['ids'][] = 1;
                        $auto_generate['cc_label'][] = is_array($field) ? $field['label'] : $field;
                        $auto_generate['cc_php'][] = 0;
                        $auto_generate['cc_code'][] = '';
                        $auto_generate['cc_sql'][] = '';
                        $auto_generate['cc_settings'][] = '';
                        $auto_generate['cc_type'][] = is_array($field) ? $field['type'] : $slug;
                        $auto_generate['cc_options'][] = '';
                        $auto_generate['cc_value'][] = is_array($field) ? $field['label'] : $field;
                        $auto_generate['cc_name'][] = is_array($field) ? $field['name'] : $field;
                    }
                }
            }
            if (!empty($section['additional'])) {
                foreach ($section['additional'] as $sub_slug => $sub_section) {
                    foreach ($sub_section['meta'] as $field) {
                        $field_options = (in_array($sub_slug, array('images', 'attachments'))) ? esc_attr('{"is_export_featured":true,"is_export_attached":true,"image_separator":"|"}') : '0';
                        $field_name = '';
                        switch ($sub_slug) {
                            case 'images':
                                $field_name = 'Image ' . $field['name'];
                                break;
                            case 'attachments':
                                $field_name = 'Attachment ' . $field['name'];
                                break;
                            default:
                                $field_name = $field['name'];
                                break;
                        }

                        if (is_array($field) and isset($field['auto'])) {
                            $auto_generate['ids'][] = 1;
                            $auto_generate['cc_label'][] = is_array($field) ? $field['label'] : $field;
                            $auto_generate['cc_php'][] = 0;
                            $auto_generate['cc_code'][] = '';
                            $auto_generate['cc_sql'][] = '';
                            $auto_generate['cc_settings'][] = '';
                            $auto_generate['cc_type'][] = is_array($field) ? $field['type'] : $sub_slug;
                            $auto_generate['cc_options'][] = $field_options;
                            $auto_generate['cc_value'][] = is_array($field) ? $field['label'] : $field;
                            $auto_generate['cc_name'][] = $field_name;
                        }
                    }
                }
            }
        }

        if (
            (
                XmlExportEngine::get_addons_service()->isWooCommerceAddonActive() ||
            XmlExportEngine::get_addons_service()->isWooCommerceOrderAddonActive()
            )
            && XmlExportWooCommerceOrder::$is_active) {

            foreach (XmlExportWooCommerceOrder::$order_sections as $slug => $section) {
                if (!empty($section['meta'])) {
                    foreach ($section['meta'] as $cur_meta_key => $field) {
                        $auto_generate['ids'][] = 1;
                        $auto_generate['cc_label'][] = is_array($field) ? $field['label'] : $cur_meta_key;
                        $auto_generate['cc_php'][] = 0;
                        $auto_generate['cc_code'][] = '';
                        $auto_generate['cc_sql'][] = '';
                        $auto_generate['cc_settings'][] = '';
                        $auto_generate['cc_type'][] = is_array($field) ? $field['type'] : 'woo_order';
                        $auto_generate['cc_options'][] = is_array($field) ? $field['options'] : $slug;
                        $auto_generate['cc_value'][] = is_array($field) ? $field['label'] : $cur_meta_key;
                        $auto_generate['cc_name'][] = is_array($field) ? $field['name'] : $field;
                    }
                }
            }
        }

        if (XmlExportEngine::get_addons_service()->isAcfAddonActive() && !XmlExportEngine::$is_comment_export) XmlExportEngine::$acf_export->auto_generate_export_fields($auto_generate);

        if(XmlExportEngine::$is_custom_addon_export) {

            $auto_generate = [];

            $addon = GF_Export_Add_On::get_instance();
            $addon->run();
            $available_data = $addon->add_on->init_available_data([]);

            foreach($available_data as $section) {
                foreach($section as $field) {
                    if($field['auto']) {
                        $auto_generate['ids'][] = 1;
                        $auto_generate['cc_label'][] = $field['label'];
                        $auto_generate['cc_php'][] = 0;
                        $auto_generate['cc_code'][] = '';
                        $auto_generate['cc_sql'][] = '';
                        $auto_generate['cc_settings'][] = '';
                        $auto_generate['cc_type'][] = $field['type'];
                        $auto_generate['cc_value'][] = $field['label'];
                        $auto_generate['cc_name'][] = $field['name'];
                    }
                }
            }

        }

        return $auto_generate;
    }


    /**
     * @param $xmlWriter
     * @param $key
     * @param $value
     */
    private static function addElement($xmlWriter, $key, $value)
    {
        $xmlWriter->startElement(preg_replace('/[^a-z0-9_-]/i', '', $key));
        $xmlWriter->writeData($value, preg_replace('/[^a-z0-9_-]/i', '', $key));
        $xmlWriter->closeElement();
    }

	/**
	 * @return \Wpae\Csv\CsvWriter
	 */
	private static function getCsvWriter()
	{
		if(is_null(self::$csvWriter)) {

			$csvStrategy = apply_filters('wp_all_export_csv_strategy', \Wpae\Csv\CsvWriter::CSV_STRATEGY_DEFAULT);
			$useRcfCompliantLineEndings = apply_filters('wp_all_export_use_csv_compliant_line_endings', false);

			if($useRcfCompliantLineEndings) {
				\Wpae\Csv\CsvRfcUtils::setDefaultWriteEol(\Wpae\Csv\CsvRfcUtils::EOL_WRITE_RFC);
			}

			self::$csvWriter = new \Wpae\Csv\CsvWriter($csvStrategy);
		}

		return self::$csvWriter;
	}

	private static function isNotProductExport($cpt) {

		if(is_array($cpt)) {
			return !in_array('product', $cpt);
		} else {
			return 'product' !== $cpt;
		}
	}
}

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