1 /*
2 * Copyright (C) 2019 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 #include <fstream>
18 #include <iostream>
19
20 #include <json/json.h>
21
main(int argc,char ** argv)22 int main(int argc, char** argv) {
23 if (argc != 2) {
24 std::cerr << "Usage: hidl_metadata_parser *.json" << std::endl;
25 return EXIT_FAILURE;
26 }
27 const std::string path = argv[1];
28
29 Json::Value root;
30 Json::CharReaderBuilder builder;
31
32 std::ifstream stream(path);
33 std::string errorMessage;
34 if (!Json::parseFromStream(builder, stream, &root, &errorMessage)) {
35 std::cerr << "Failed to read interface inheritance hierarchy file: " << path << std::endl
36 << errorMessage << std::endl;
37 return EXIT_FAILURE;
38 }
39
40 std::cout << "#include <hidl/metadata.h>" << std::endl;
41 std::cout << "namespace android {" << std::endl;
42 std::cout << "std::vector<HidlInterfaceMetadata> HidlInterfaceMetadata::all() {" << std::endl;
43 std::cout << "return std::vector<HidlInterfaceMetadata>{" << std::endl;
44 for (const Json::Value& entry : root) {
45 std::cout << "HidlInterfaceMetadata{" << std::endl;
46 // HIDL interface characters guaranteed to be accepted in C++ string
47 std::cout << "std::string(\"" << entry["interface"].asString() << "\")," << std::endl;
48 std::cout << "std::vector<std::string>{" << std::endl;
49 for (const Json::Value& intf : entry["inheritedInterfaces"]) {
50 std::cout << "std::string(\"" << intf.asString() << "\")," << std::endl;
51 }
52 std::cout << "}," << std::endl;
53 std::cout << "}," << std::endl;
54 }
55 std::cout << "};" << std::endl;
56 std::cout << "}" << std::endl;
57 std::cout << "} // namespace android" << std::endl;
58 return EXIT_SUCCESS;
59 }
60