JSONManifestBuilder.cpp

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// SPDX-License-Identifier: BSD-3-Clause
// Copyright 2024-2026, Amlal El Mahrouss (amlal@nekernel.org)
// Licensed under the Apache License, Version 2.0 (see LICENSE file)
// Official repository: https://github.com/ne-app-eu/bld
 
#include <BldKit/JSONManifestBuilder.h>
#include <json/json.h>
#include <fstream>
 
namespace BldKit {
 
namespace FS = std::filesystem;
 
bool JSONManifestBuilder::BuildTarget(BuildConfig& config) {
  std::string path;
 
  if (config.path_.empty()) {
    BldKit::Logger::info() << "error: file path is empty." << std::endl;
    return false;
  } else {
    path = config.path_;
 
    if (!FS::exists(path)) {
      BldKit::Logger::info() << "error: file '" << path << "' does not exist." << std::endl;
      return false;
    }
  }
 
  try {
    std::ifstream json(path);
 
    if (!json.good()) {
      BldKit::Logger::info() << "error: file '" << path << "' is not a valid json."
                              << std::endl;
      return false;
    }
 
    nlohmann::json json_obj = nlohmann::json::parse(json);
 
    try {
      nlohmann::json description = json_obj["description"];
 
      BldKit::Logger::info() << "package path: " << path << std::endl;
 
      if (auto res = description.get<std::string>(); !res.empty())
        BldKit::Logger::info() << "description: " << res << std::endl;
    } catch (...) {
    }
 
    std::string compiler = json_obj["compiler_path"].get<std::string>();
 
    std::string command = compiler + " ";
 
    nlohmann::json header_search_path = json_obj["compiler_headers_path"];
 
    for (auto& headers : header_search_path) {
      command += "-I" + headers.get<std::string>() + " ";
    }
 
    nlohmann::json headers_path = json_obj["headers_path"];
 
    for (auto& headers : headers_path) {
      command += "-I" + headers.get<std::string>() + " ";
    }
 
    nlohmann::json sources_files = json_obj["sources_path"];
 
    for (auto& sources : sources_files) {
      command += sources.get<std::string>() + " ";
    }
 
    nlohmann::json macros_list = json_obj["cpp_macros"];
 
    for (auto& macro : macros_list) {
      command += "-D" + macro.get<std::string>() + " ";
    }
 
    nlohmann::json compiler_flags = json_obj["compiler_flags"];
 
    for (auto& flag : compiler_flags) {
      command += flag.get<std::string>() + " ";
    }
 
    if (json_obj["compiler_std"].is_string())
      command += "-std=" + json_obj["compiler_std"].get<std::string>() + " ";
 
    command += "-o " + json_obj["output_name"].get<std::string>();
 
    auto target = json_obj["output_name"].get<std::string>();
 
    BldKit::Logger::info() << "output path: " << target << "\n";
 
    auto ret_exec = std::system(command.c_str());
 
    if (ret_exec > 0) {
      BldKit::Logger::info() << "error: exit with message: " << std::strerror(ret_exec) << "."
                              << std::endl;
      config.has_failed_ = true;
      return false;
    }
  } catch (const std::exception& err) {
    BldKit::Logger::info() << "error: exit with message: " << err.what() << "." << std::endl;
    config.has_failed_ = true;
 
    return false;
  }
 
  return true;
}
 
const std::string_view JSONManifestBuilder::BuildSystem() {
  return "NeBuild (nlohmann::json)";
}
 
}  // namespace BldKit