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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef AAPT_TABLEMERGER_H
#define AAPT_TABLEMERGER_H
#include <functional>
#include <map>
#include "android-base/macros.h"
#include "Resource.h"
#include "ResourceTable.h"
#include "ResourceValues.h"
#include "filter/ConfigFilter.h"
#include "io/File.h"
#include "process/IResourceTableConsumer.h"
#include "util/Util.h"
namespace aapt {
struct TableMergerOptions {
// If true, resources in overlays can be added without previously having existed.
bool auto_add_overlay = false;
// If true, resource overlays with conflicting visibility are not allowed.
bool strict_visibility = false;
};
// TableMerger takes resource tables and merges all packages within the tables that have the same
// package ID.
//
// It is assumed that any FileReference values have their io::IFile pointer set to point to the
// file they represent.
//
// If a package has a different name, all the entries in that table have their names mangled
// to include the package name. This way there are no collisions. In order to do this correctly,
// the TableMerger needs to also mangle any FileReference paths. Once these are mangled, the
// `IFile` pointer in `FileReference` will point to the original file.
//
// Once the merging is complete, a separate phase can go collect the files from the various
// source APKs and either copy or process their XML and put them in the correct location in the
// final APK.
class TableMerger {
public:
// Note: The out_table ResourceTable must live longer than this TableMerger.
// References are made to this ResourceTable for efficiency reasons.
TableMerger(IAaptContext* context, ResourceTable* out_table, const TableMergerOptions& options);
inline const std::set<std::string>& merged_packages() const {
return merged_packages_;
}
// Merges resources from the same or empty package. This is for local sources.
// If overlay is true, the resources are treated as overlays.
bool Merge(const Source& src, ResourceTable* table, bool overlay);
// Merges resources from the given package, mangling the name. This is for static libraries.
// All FileReference values must have their io::IFile set.
bool MergeAndMangle(const Source& src, const android::StringPiece& package, ResourceTable* table);
// Merges a compiled file that belongs to this same or empty package.
bool MergeFile(const ResourceFile& fileDesc, bool overlay, io::IFile* file);
private:
DISALLOW_COPY_AND_ASSIGN(TableMerger);
IAaptContext* context_;
ResourceTable* master_table_;
TableMergerOptions options_;
ResourceTablePackage* master_package_;
std::set<std::string> merged_packages_;
bool MergeImpl(const Source& src, ResourceTable* src_table, bool overlay, bool allow_new);
bool DoMerge(const Source& src, ResourceTablePackage* src_package, bool mangle_package,
bool overlay, bool allow_new_resources);
std::unique_ptr<FileReference> CloneAndMangleFile(const std::string& package,
const FileReference& value);
};
} // namespace aapt
#endif /* AAPT_TABLEMERGER_H */
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