Record version of WP for which item was last imported

Also:

* Updates `import_version()` to return the version number it obtained, or false.
* Stores version in `_wp-parser_last_parsed_wp_version` post meta

Author: coffee2code

lib/class-importer.php

@@ -81,6 +81,13 @@ class Importer implements LoggerAwareInterface {
 	 */
 	public $errors = array();
 
+	/**
+	 * Version number of codebase being parsed.
+	 *
+	 * @var string
+	 */
+	public $version;
+
 	/**
 	 * @var array Cached items of inserted terms
 	 */
@@ -158,6 +165,12 @@ public function import( array $data, $skip_sleep = false, $import_ignored_functi
 			exit;
 		}
 
+		// Specifically import WP version file first to get version number.
+		$ver_file = array_filter( $data, function( $f ) { return 'wp-includes/version.php' === $f['path']; } );
+		if ( $ver_file ) {
+			$this->version = $this->import_version( reset( $ver_file ) );
+		}
+
 		$root = '';
 		foreach ( $data as $file ) {
 			$this->logger->info( sprintf( 'Processing file %1$s of %2$s "%3$s".', number_format_i18n( $file_number ), number_format_i18n( $num_of_files ), $file['path'] ) );
@@ -336,10 +349,6 @@ public function import_file( array $file, $skip_sleep = false, $import_ignored =
 				sleep( 3 );
 			}
 		}
-
-		if ( 'wp-includes/version.php' === $file['path'] ) {
-			$this->import_version( $file );
-		}
 	}
 
 	/**
@@ -477,21 +486,25 @@ protected function import_method( array $data, $parent_post_id = 0, $import_igno
 	 * Updates the 'wp_parser_imported_wp_version' option with the version from wp-includes/version.php.
 	 *
 	 * @param array   $data Data
+	 * @return string|false WordPress version number, or false if not known.
 	 */
 	protected function import_version( $data ) {
 
 		$version_path = $data['root'] . '/' . $data['path'];
 
 		if ( ! is_readable( $version_path ) ) {
-			return;
+			return false;
 		}
 
 		include $version_path;
 
 		if ( isset( $wp_version ) && $wp_version ) {
 			update_option( 'wp_parser_imported_wp_version', $wp_version );
 			$this->logger->info( "\t" . sprintf( 'Updated option wp_parser_imported_wp_version to "%1$s"', $wp_version ) );
+			return $wp_version;
 		}
+
+		return false;
 	}
 
 	/**
@@ -747,6 +760,7 @@ public function import_item( array $data, $parent_post_id = 0, $import_ignored =
 		$anything_updated[] = update_post_meta( $post_id, '_wp-parser_line_num', (string) $data['line'] );
 		$anything_updated[] = update_post_meta( $post_id, '_wp-parser_end_line_num', (string) $data['end_line'] );
 		$anything_updated[] = update_post_meta( $post_id, '_wp-parser_tags', $data['doc']['tags'] );
+		$anything_updated[] = update_post_meta( $post_id, '_wp-parser_last_parsed_wp_version', $this->version );
 
 		// If the post didn't need to be updated, but meta or tax changed, update it to bump last modified.
 		if ( ! $is_new_post && ! $post_needed_update && array_filter( $anything_updated ) ) {