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      1 /*
      2  * Copyright (C) 2016 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 AAPT_FLATTEN_TABLEPROTOSERIALIZER_H
     18 #define AAPT_FLATTEN_TABLEPROTOSERIALIZER_H
     19 
     20 #include "android-base/macros.h"
     21 #include "google/protobuf/io/coded_stream.h"
     22 #include "google/protobuf/io/zero_copy_stream_impl_lite.h"
     23 
     24 #include "Diagnostics.h"
     25 #include "ResourceTable.h"
     26 #include "Source.h"
     27 #include "proto/ProtoHelpers.h"
     28 
     29 namespace aapt {
     30 
     31 class CompiledFileOutputStream {
     32  public:
     33   explicit CompiledFileOutputStream(google::protobuf::io::ZeroCopyOutputStream* out);
     34 
     35   void WriteLittleEndian32(uint32_t value);
     36   void WriteCompiledFile(const pb::internal::CompiledFile* compiledFile);
     37   void WriteData(const BigBuffer* buffer);
     38   void WriteData(const void* data, size_t len);
     39   bool HadError();
     40 
     41  private:
     42   DISALLOW_COPY_AND_ASSIGN(CompiledFileOutputStream);
     43 
     44   void EnsureAlignedWrite();
     45 
     46   google::protobuf::io::CodedOutputStream out_;
     47 };
     48 
     49 class CompiledFileInputStream {
     50  public:
     51   explicit CompiledFileInputStream(const void* data, size_t size);
     52 
     53   bool ReadLittleEndian32(uint32_t* outVal);
     54   bool ReadCompiledFile(pb::internal::CompiledFile* outVal);
     55   bool ReadDataMetaData(uint64_t* outOffset, uint64_t* outLen);
     56 
     57  private:
     58   DISALLOW_COPY_AND_ASSIGN(CompiledFileInputStream);
     59 
     60   void EnsureAlignedRead();
     61 
     62   google::protobuf::io::CodedInputStream in_;
     63 };
     64 
     65 std::unique_ptr<pb::ResourceTable> SerializeTableToPb(ResourceTable* table);
     66 std::unique_ptr<ResourceTable> DeserializeTableFromPb(const pb::ResourceTable& pbTable,
     67                                                       const Source& source, IDiagnostics* diag);
     68 
     69 std::unique_ptr<pb::internal::CompiledFile> SerializeCompiledFileToPb(const ResourceFile& file);
     70 std::unique_ptr<ResourceFile> DeserializeCompiledFileFromPb(
     71     const pb::internal::CompiledFile& pbFile, const Source& source, IDiagnostics* diag);
     72 
     73 }  // namespace aapt
     74 
     75 #endif /* AAPT_FLATTEN_TABLEPROTOSERIALIZER_H */
     76