flatbuffers

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/*
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 * Copyright 2014 Google Inc. All rights reserved.
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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 "flatbuffers/idl.h"
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#include "flatbuffers/util.h"
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#include "monster_generated.h"  // Already includes "flatbuffers/flatbuffers.h".
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using namespace MyGame::Sample;
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// This is an example of parsing text straight into a buffer and then
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// generating flatbuffer (JSON) text from the buffer.
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int main(int /*argc*/, const char * /*argv*/[]) {
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  // load FlatBuffer schema (.fbs) and JSON from disk
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  std::string schema_file;
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  std::string json_file;
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  std::string bfbs_file;
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  bool ok =
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      flatbuffers::LoadFile("tests/monster_test.fbs", false, &schema_file) &&
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      flatbuffers::LoadFile("tests/monsterdata_test.golden", false,
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                            &json_file) &&
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      flatbuffers::LoadFile("tests/monster_test.bfbs", true, &bfbs_file);
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  if (!ok) {
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    printf("couldn't load files!\n");
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    return 1;
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  }
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  const char *include_directories[] = { "samples", "tests",
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                                        "tests/include_test", nullptr };
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  // parse fbs schema
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  flatbuffers::Parser parser1;
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  ok = parser1.Parse(schema_file.c_str(), include_directories);
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  assert(ok);
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  // inizialize parser by deserializing bfbs schema
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  flatbuffers::Parser parser2;
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  ok = parser2.Deserialize(reinterpret_cast<const uint8_t *>(bfbs_file.c_str()),
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                           bfbs_file.length());
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  assert(ok);
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  // parse json in parser from fbs and bfbs
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  ok = parser1.Parse(json_file.c_str(), include_directories);
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  assert(ok);
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  ok = parser2.Parse(json_file.c_str(), include_directories);
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  assert(ok);
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  // to ensure it is correct, we now generate text back from the binary,
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  // and compare the two:
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  std::string jsongen1;
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  if (GenText(parser1, parser1.builder_.GetBufferPointer(), &jsongen1)) {
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    printf("Couldn't serialize parsed data to JSON!\n");
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    return 1;
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  }
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  std::string jsongen2;
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  if (GenText(parser2, parser2.builder_.GetBufferPointer(), &jsongen2)) {
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    printf("Couldn't serialize parsed data to JSON!\n");
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    return 1;
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  }
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  if (jsongen1 != jsongen2) {
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    printf("%s----------------\n%s", jsongen1.c_str(), jsongen2.c_str());
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  }
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  printf("The FlatBuffer has been parsed from JSON successfully.\n");
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}
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