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✏️ Editing: class-wpml-po-import-strings.php

<?php

class WPML_PO_Import_Strings {

const NONCE_NAME = 'wpml-po-import-strings';

private $errors;

public function maybe_import_po_add_strings() {
		if ( array_key_exists( 'icl_po_upload', $_POST ) && wp_verify_nonce( $_POST[ '_wpnonce' ], 'icl_po_form' ) ) {
			add_filter( 'wpml_st_get_po_importer', array( $this, 'import_po' ) );
		} elseif ( array_key_exists( 'action', $_POST ) && 'icl_st_save_strings' === $_POST[ 'action' ] ) {
			$this->add_strings();
		}
	}

/**
	 * @return null|WPML_PO_Import
	 */
	public function import_po() {
		if ( $_FILES[ 'icl_po_file' ][ 'size' ] === 0 ) {
			$this->errors = esc_html__( 'File upload error', 'wpml-string-translation' );
			return null;
		} else {
			$po_importer  = new WPML_PO_Import( $_FILES[ 'icl_po_file' ][ 'tmp_name' ] );
			$this->errors = $po_importer->get_errors();
			return $po_importer;
		}
	}

/**
	 * @return string
	 */
	public function get_errors() {
		return $this->errors;
	}

private function add_strings() {
		$strings = json_decode( $_POST['strings_json'] );

foreach ( $strings as $k => $string ) {

$string->original = str_replace('\n', "\n", $string->original );
			$name = isset( $string->name ) ? $string->name : md5( $string->original );

$string_id = icl_register_string( array(
					'domain' => $_POST[ 'icl_st_domain_name' ],
					'context' => $string->context
				),
					$name,
					$string->original
			);

$this->maybe_add_translation( $string_id, $string );

}
	}

/**
	 * @param string $string_id
	 * @param obj $string
	 */
	private function maybe_add_translation( $string_id, $string ) {
		if ( $string_id && array_key_exists( 'icl_st_po_language', $_POST ) ) {
			if ( $string->translation !== '' ) {
				$status = ICL_TM_COMPLETE;
				if ( $string->fuzzy ) {
					$status = ICL_TM_NOT_TRANSLATED;
				}
				$translation = str_replace('\n', "\n", $string->translation );

icl_add_string_translation( $string_id, $_POST[ 'icl_st_po_language' ], $translation, $status );
				icl_update_string_status( $string_id );
			}
		}
	}
}

MR SKB