Add upstream

wp-content/plugins/jetpack/bin/build-asset-cdn-json.php

@@ -0,0 +1,48 @@
+<?php
+
+// The repo root path.
+$path = dirname( dirname( __FILE__ ) ) . '/';
+
+// Build an iterator over all files in the repo that match the regex in the RegexIterator.
+$directory = new RecursiveDirectoryIterator( $path );
+$iterator  = new RecursiveIteratorIterator( $directory );
+$regex     = new RegexIterator( $iterator, '/^.+\.(css|js)$/i', RecursiveRegexIterator::GET_MATCH );
+
+$ignore_paths = array(
+	'_inc/client/',
+	'bin/',
+	'docker/',
+	'docs/',
+	'extensions/',
+	'logs/',
+	'node_modules/',
+	'tests/',
+	'tools/',
+	'vendor/',
+);
+
+$manifest = array();
+foreach ( $regex as $path_to_file => $value ) {
+	$path_from_repo_root = str_replace( $path, '', $path_to_file );
+
+	// Ignore top-level files.
+	if ( false === strpos( $path_from_repo_root, '/' ) ) {
+		continue;
+	}
+
+	// Ignore explicit ignore list.
+	foreach ( $ignore_paths as $ignore_path ) {
+		if ( 0 === strpos( $path_from_repo_root, $ignore_path ) ) {
+			continue 2;
+		}
+	}
+
+	$manifest[] = $path_from_repo_root;
+}
+
+$export = var_export( $manifest, true );
+
+file_put_contents( $path . 'modules/photon-cdn/jetpack-manifest.php', "<?php
+// This file is autogenerated by bin/build-asset-cdn-json.php
+
+\$assets = $export;\r\n" );