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15c587404c
Follow up from #21436 . That PR works for all embeddings except for Android, which creates a special JNI AssetResolver. Since the shell cannot recreate this resolver, update the logic to preserve existing resolvers instead.
57 lines
1.4 KiB
C++
57 lines
1.4 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "flutter/assets/directory_asset_bundle.h"
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#include <utility>
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#include "flutter/fml/eintr_wrapper.h"
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#include "flutter/fml/file.h"
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#include "flutter/fml/mapping.h"
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namespace flutter {
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DirectoryAssetBundle::DirectoryAssetBundle(
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fml::UniqueFD descriptor,
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bool is_valid_after_asset_manager_change)
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: descriptor_(std::move(descriptor)) {
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if (!fml::IsDirectory(descriptor_)) {
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return;
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}
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is_valid_after_asset_manager_change_ = is_valid_after_asset_manager_change;
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is_valid_ = true;
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}
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DirectoryAssetBundle::~DirectoryAssetBundle() = default;
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// |AssetResolver|
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bool DirectoryAssetBundle::IsValid() const {
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return is_valid_;
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}
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// |AssetResolver|
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bool DirectoryAssetBundle::IsValidAfterAssetManagerChange() const {
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return is_valid_after_asset_manager_change_;
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}
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// |AssetResolver|
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std::unique_ptr<fml::Mapping> DirectoryAssetBundle::GetAsMapping(
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const std::string& asset_name) const {
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if (!is_valid_) {
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FML_DLOG(WARNING) << "Asset bundle was not valid.";
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return nullptr;
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}
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auto mapping = std::make_unique<fml::FileMapping>(fml::OpenFile(
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descriptor_, asset_name.c_str(), false, fml::FilePermission::kRead));
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if (!mapping->IsValid()) {
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return nullptr;
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}
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return mapping;
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}
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} // namespace flutter
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