e753ffef54
This change modifies the idmap file format to allow for target resources to map to arbitrary type/value combinations and to allow overlay resources to be mapped back to target resource ids so references to overlay resources can appear as references to target resources at runtime. The mappings of target resources to overlay resources and vice-versa are both encoded as sparse arrays. Instead of looking up a resource by indexing into an array that maps to the overlay resource id, the runtime will binary search over the sparse array to find the type and value that overlays the target resource. Bug: 135943783 Test: idmap2_tests Change-Id: I5d5344cdb7fe35f4f2e8d6781016299dea5d1e20
80 lines
2.7 KiB
C++
80 lines
2.7 KiB
C++
/*
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* Copyright (C) 2018 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 "idmap2/PrettyPrintVisitor.h"
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#include <string>
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#include "android-base/macros.h"
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#include "android-base/stringprintf.h"
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#include "androidfw/ApkAssets.h"
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#include "idmap2/ResourceUtils.h"
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#include "idmap2/Result.h"
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namespace android::idmap2 {
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#define RESID(pkg, type, entry) (((pkg) << 24) | ((type) << 16) | (entry))
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void PrettyPrintVisitor::visit(const Idmap& idmap ATTRIBUTE_UNUSED) {
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}
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void PrettyPrintVisitor::visit(const IdmapHeader& header) {
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stream_ << "target apk path : " << header.GetTargetPath() << std::endl
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<< "overlay apk path : " << header.GetOverlayPath() << std::endl;
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target_apk_ = ApkAssets::Load(header.GetTargetPath().to_string());
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if (target_apk_) {
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target_am_.SetApkAssets({target_apk_.get()});
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}
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}
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void PrettyPrintVisitor::visit(const IdmapData::Header& header ATTRIBUTE_UNUSED) {
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}
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void PrettyPrintVisitor::visit(const IdmapData& data) {
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const bool target_package_loaded = !target_am_.GetApkAssets().empty();
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const ResStringPool string_pool(data.GetStringPoolData(),
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data.GetHeader()->GetStringPoolLength());
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const size_t string_pool_offset = data.GetHeader()->GetStringPoolIndexOffset();
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for (auto& target_entry : data.GetTargetEntries()) {
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stream_ << base::StringPrintf("0x%08x ->", target_entry.target_id);
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if (target_entry.data_type != Res_value::TYPE_REFERENCE &&
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target_entry.data_type != Res_value::TYPE_DYNAMIC_REFERENCE) {
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stream_ << " " << utils::DataTypeToString(target_entry.data_type);
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}
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if (target_entry.data_type == Res_value::TYPE_STRING) {
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stream_ << " \""
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<< string_pool.string8ObjectAt(target_entry.data_value - string_pool_offset).c_str()
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<< "\"";
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} else {
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stream_ << " " << base::StringPrintf("0x%08x", target_entry.data_value);
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}
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if (target_package_loaded) {
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Result<std::string> name = utils::ResToTypeEntryName(target_am_, target_entry.target_id);
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if (name) {
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stream_ << " " << *name;
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}
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}
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stream_ << std::endl;
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}
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}
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} // namespace android::idmap2
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