06460ef0d7
This also enables an AAPT behavior that CTS tests have come to depend on. Small files that compress negatively (get larger) are stored uncompressed. Some CTS tests assume this and try to open these files by mmapping them, which is only possible if they are uncompressed. Bug: 35461578 Test: make aapt2_tests Change-Id: Id622a6150fe72477ad65d67d1bad897a8ee2ffb9
123 lines
4.3 KiB
C++
123 lines
4.3 KiB
C++
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "LoadedApk.h"
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#include "ResourceValues.h"
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#include "ValueVisitor.h"
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#include "flatten/Archive.h"
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#include "flatten/TableFlattener.h"
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#include "io/BigBufferInputStream.h"
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namespace aapt {
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std::unique_ptr<LoadedApk> LoadedApk::LoadApkFromPath(IAaptContext* context,
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const android::StringPiece& path) {
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Source source(path);
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std::string error;
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std::unique_ptr<io::ZipFileCollection> apk = io::ZipFileCollection::Create(path, &error);
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if (!apk) {
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context->GetDiagnostics()->Error(DiagMessage(source) << error);
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return {};
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}
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io::IFile* file = apk->FindFile("resources.arsc");
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if (!file) {
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context->GetDiagnostics()->Error(DiagMessage(source) << "no resources.arsc found");
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return {};
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}
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std::unique_ptr<io::IData> data = file->OpenAsData();
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if (!data) {
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context->GetDiagnostics()->Error(DiagMessage(source) << "could not open resources.arsc");
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return {};
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}
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std::unique_ptr<ResourceTable> table = util::make_unique<ResourceTable>();
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BinaryResourceParser parser(context, table.get(), source, data->data(), data->size());
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if (!parser.Parse()) {
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return {};
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}
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return util::make_unique<LoadedApk>(source, std::move(apk), std::move(table));
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}
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bool LoadedApk::WriteToArchive(IAaptContext* context, const TableFlattenerOptions& options,
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IArchiveWriter* writer) {
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std::set<std::string> referenced_resources;
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// List the files being referenced in the resource table.
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for (auto& pkg : table_->packages) {
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for (auto& type : pkg->types) {
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for (auto& entry : type->entries) {
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for (auto& config_value : entry->values) {
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FileReference* file_ref = ValueCast<FileReference>(config_value->value.get());
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if (file_ref) {
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referenced_resources.insert(*file_ref->path);
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}
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}
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}
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}
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}
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std::unique_ptr<io::IFileCollectionIterator> iterator = apk_->Iterator();
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while (iterator->HasNext()) {
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io::IFile* file = iterator->Next();
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std::string path = file->GetSource().path;
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// The name of the path has the format "<zip-file-name>@<path-to-file>".
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path = path.substr(path.find("@") + 1);
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// Skip resources that are not referenced if requested.
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if (path.find("res/") == 0 && referenced_resources.find(path) == referenced_resources.end()) {
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if (context->IsVerbose()) {
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context->GetDiagnostics()->Note(DiagMessage()
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<< "Removing resource '" << path << "' from APK.");
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}
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continue;
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}
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// The resource table needs to be re-serialized since it might have changed.
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if (path == "resources.arsc") {
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BigBuffer buffer(4096);
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// TODO(adamlesinski): How to determine if there were sparse entries (and if to encode
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// with sparse entries) b/35389232.
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TableFlattener flattener(options, &buffer);
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if (!flattener.Consume(context, table_.get())) {
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return false;
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}
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io::BigBufferInputStream input_stream(&buffer);
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if (!writer->WriteFile(path, ArchiveEntry::kAlign, &input_stream)) {
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context->GetDiagnostics()->Error(DiagMessage()
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<< "Error when writing file '" << path << "' in APK.");
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return false;
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}
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continue;
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}
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std::unique_ptr<io::IData> data = file->OpenAsData();
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uint32_t compression_flags = file->WasCompressed() ? ArchiveEntry::kCompress : 0u;
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if (!writer->WriteFile(path, compression_flags, data.get())) {
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context->GetDiagnostics()->Error(DiagMessage()
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<< "Error when writing file '" << path << "' in APK.");
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return false;
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}
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}
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return true;
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}
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} // namespace aapt
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