1 // Copyright 2013 The Flutter Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #include "flutter/assets/directory_asset_bundle.h" 6 7 #include <utility> 8 9 #include "flutter/fml/eintr_wrapper.h" 10 #include "flutter/fml/file.h" 11 #include "flutter/fml/mapping.h" 12 13 namespace flutter { 14 DirectoryAssetBundle(fml::UniqueFD descriptor)15DirectoryAssetBundle::DirectoryAssetBundle(fml::UniqueFD descriptor) 16 : descriptor_(std::move(descriptor)) { 17 if (!fml::IsDirectory(descriptor_)) { 18 return; 19 } 20 is_valid_ = true; 21 } 22 23 DirectoryAssetBundle::~DirectoryAssetBundle() = default; 24 25 // |AssetResolver| IsValid() const26bool DirectoryAssetBundle::IsValid() const { 27 return is_valid_; 28 } 29 30 // |AssetResolver| GetAsMapping(const std::string & asset_name) const31std::unique_ptr<fml::Mapping> DirectoryAssetBundle::GetAsMapping( 32 const std::string& asset_name) const { 33 if (!is_valid_) { 34 FML_DLOG(WARNING) << "Asset bundle was not valid."; 35 return nullptr; 36 } 37 38 auto mapping = std::make_unique<fml::FileMapping>(fml::OpenFile( 39 descriptor_, asset_name.c_str(), false, fml::FilePermission::kRead)); 40 41 if (!mapping->IsValid()) { 42 return nullptr; 43 } 44 45 return mapping; 46 } 47 48 } // namespace flutter 49