, not

. $marker = 'llamly-class-' . bin2hex(random_bytes(8)); $processor->set_attribute('class', $marker); $html = (string) preg_replace('/\s+class="' . $marker . '"/', '', $processor->get_updated_html(), 1); } else { foreach ($remove as $class) { $processor->remove_class($class); } foreach ($add as $class) { $processor->add_class($class); } $html = $processor->get_updated_html(); } $node['innerContent'][$index] = $html; $node['innerHTML'] = implode('', array_filter($node['innerContent'], 'is_string')); return $node; } /** @return list Every string key and value of an attribute tree. */ private static function attrStrings(array $attrs, int $depth = 0): array { if ($depth > 32) { throw self::invalid('invalid_block', 'Block attributes are nested too deeply.'); } $out = []; foreach ($attrs as $key => $value) { if (is_string($key)) { $out[] = $key; } if (is_string($value)) { $out[] = $value; } elseif (is_array($value)) { $out = array_merge($out, self::attrStrings($value, $depth + 1)); } } return $out; } private static function isRegistered(string $name): bool { return \WP_Block_Type_Registry::get_instance()->is_registered($name); } /** Static block = registered with a save() output (not server-rendered) or unknown to the server. */ private static function isStatic(string $name): bool { if ($name === '') { return true; } $type = \WP_Block_Type_Registry::get_instance()->get_registered($name); return !$type instanceof \WP_Block_Type || !$type->is_dynamic(); } // ------------------------------------------------------------------ paths private static function existingPath(array $tree, mixed $path, string $where): string { if (!is_string($path) || !preg_match('/' . self::PATH_PATTERN . '/D', $path)) { throw self::invalid('invalid_path', esc_html($where . ' must be a dot path such as "0" or "2.1".')); } if (self::node($tree, $path) === null) { throw self::invalid('invalid_path', esc_html(sprintf('%s: no block at %s in the tree you read (paths refer to the tree before the batch).', $where, $path))); } return $path; } private static function position(mixed $position, string $where): string { if (!is_string($position) || !in_array($position, self::POSITIONS, true)) { throw self::invalid('invalid_operation', esc_html($where . '.position must be before, after, first_child or last_child.')); } return $position; } /** @return array|null */ public static function node(array $tree, string $path): ?array { $level = $tree; $node = null; foreach (explode('.', $path) as $segment) { $position = (int) $segment; $level = array_values($level); if (!isset($level[$position]) || !is_array($level[$position])) { return null; } $node = $level[$position]; $level = is_array($node['innerBlocks'] ?? null) ? $node['innerBlocks'] : []; } return $node; } /** @return list> */ private static function replaceNode(array $tree, string $path, array $node): array { $segments = array_map('intval', explode('.', $path)); $first = array_shift($segments); $tree = array_values($tree); if (!$segments) { $tree[$first] = $node; return $tree; } $parent = $tree[$first]; $parent['innerBlocks'] = self::replaceNode((array) $parent['innerBlocks'], implode('.', $segments), $node); $tree[$first] = $parent; return $tree; } private static function isDescendant(string $path, string $root): bool { return strpos($path, $root . '.') === 0; } /** @return array */ private static function describe(array $tree, array $op, int $i): array { $item = ['index' => $i, 'op' => $op['op']]; if ($op['op'] === 'move') { $item += ['from_path' => $op['from'], 'to_path' => $op['to'], 'position' => $op['position'], 'block' => self::node($tree, $op['from'])['blockName'] ?? 'core/freeform']; return $item; } $item['path'] = $op['path']; $item['target'] = self::node($tree, $op['path'])['blockName'] ?? 'core/freeform'; if (isset($op['position'])) { $item['position'] = $op['position']; } if (isset($op['block'])) { $item['block'] = $op['block']['blockName']; } if ($op['op'] === 'update') { $item['changes'] = array_values(array_filter([$op['attrs'] !== null ? 'attrs' : null, $op['content'] !== null ? 'content' : null])); } return $item; } private static function invalid(string $code, string $message): MutationFailure { return new MutationFailure($code, $message, 400); } }