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      1 /*
      2  * Copyright (C) 2017 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef AAPT2_APKSPLITTER_H
     18 #define AAPT2_APKSPLITTER_H
     19 
     20 #include <memory>
     21 #include <string>
     22 #include <unordered_set>
     23 #include <vector>
     24 
     25 #include "Diagnostics.h"
     26 #include "LoadedApk.h"
     27 #include "configuration/ConfigurationParser.h"
     28 
     29 namespace aapt {
     30 
     31 struct MultiApkGeneratorOptions {
     32   std::string out_dir;
     33   std::vector<configuration::OutputArtifact> apk_artifacts;
     34   TableFlattenerOptions table_flattener_options;
     35   std::unordered_set<std::string> kept_artifacts;
     36 };
     37 
     38 /**
     39  * Generates a set of APKs that are a subset of the original base APKs. Each of the new APKs contain
     40  * only the resources and assets for an artifact in the configuration file.
     41  */
     42 class MultiApkGenerator {
     43  public:
     44   MultiApkGenerator(LoadedApk* apk, IAaptContext* context);
     45 
     46   /**
     47    * Writes a set of APKs to the provided output directory. Each APK is a subset fo the base APK and
     48    * represents an artifact in the post processing configuration.
     49    */
     50   bool FromBaseApk(const MultiApkGeneratorOptions& options);
     51 
     52  protected:
     53   virtual std::unique_ptr<ResourceTable> FilterTable(IAaptContext* context,
     54                                                      const configuration::OutputArtifact& artifact,
     55                                                      const ResourceTable& old_table,
     56                                                      FilterChain* chain);
     57 
     58  private:
     59   IDiagnostics* GetDiagnostics() {
     60     return context_->GetDiagnostics();
     61   }
     62 
     63   bool UpdateManifest(const configuration::OutputArtifact& artifact,
     64                       std::unique_ptr<xml::XmlResource>* updated_manifest, IDiagnostics* diag);
     65 
     66   /**
     67    * Adds the <screen> elements to the parent node for the provided density configuration.
     68    */
     69   void AddScreens(const ConfigDescription& config, xml::Element* parent);
     70 
     71   LoadedApk* apk_;
     72   IAaptContext* context_;
     73 };
     74 
     75 }  // namespace aapt
     76 
     77 #endif  // AAPT2_APKSPLITTER_H
     78