first commit

wp-content/plugins/wpml-string-translation/classes/strings-scanning/class-wpml-st-file-hashing.php

@@ -0,0 +1,58 @@
+<?php
+
+class WPML_ST_File_Hashing {
+
+	const OPTION_NAME = 'wpml-scanning-files-hashing';
+
+	/** @var array */
+	private $hashes;
+
+	public function __construct() {
+		$this->hashes = $this->get_hashes();
+	}
+
+	/**
+	 * @param string $file
+	 */
+	private function set_hash( $file ) {
+		$this->hashes[ $file ] = md5_file( $file );
+	}
+
+	/**
+	 * @param string $file
+	 *
+	 * @return bool
+	 */
+	public function hash_changed( $file ) {
+		return ! array_key_exists( $file, $this->hashes ) || md5_file( $file ) !== $this->hashes[ $file ];
+	}
+
+	public function save_hash() {
+		$needs_to_save = false;
+		if ( array_key_exists( 'files', $_POST ) ) {
+			foreach ( $_POST['files'] as $file_path ) {
+				if ( realpath( $file_path ) ) {
+					$this->set_hash( $file_path );
+					$needs_to_save = true;
+				}
+			}
+		}
+
+		if ( $needs_to_save ) {
+			update_option( self::OPTION_NAME, $this->hashes );
+		}
+
+		wp_send_json_success();
+	}
+
+	/**
+	 * @return array
+	 */
+	private function get_hashes() {
+		return get_option( self::OPTION_NAME ) ? get_option( self::OPTION_NAME ) : array();
+	}
+
+	public function clean_hashes() {
+		delete_option( self::OPTION_NAME );
+	}
+}