text: // Copyright (c) 2015-2019 The bitmonkey Core developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #include <bench/bench.h>
  
  #include <util/strencodings.h>
  #include <util/system.h>
  
  #include <memory>
  
  static const int64_t DEFAULT_BENCH_EVALUATIONS = 5;
  static const char* DEFAULT_BENCH_FILTER = ".*";
  static const char* DEFAULT_BENCH_SCALING = "1.0";
  static const char* DEFAULT_BENCH_PRINTER = "console";
  static const char* DEFAULT_PLOT_PLOTLYURL = "https://cdn.plot.ly/plotly-latest.min.js";
  static const int64_t DEFAULT_PLOT_WIDTH = 1024;
  static const int64_t DEFAULT_PLOT_HEIGHT = 768;
  
  static void SetupBenchArgs()
  {
      SetupHelpOptions(gArgs);
  
      gArgs.AddArg("-list", "List benchmarks without executing them. Can be combined with -scaling and -filter", false, OptionsCategory::OPTIONS);
      gArgs.AddArg("-evals=<n>", strprintf("Number of measurement evaluations to perform. (default: %u)", DEFAULT_BENCH_EVALUATIONS), false, OptionsCategory::OPTIONS);
      gArgs.AddArg("-filter=<regex>", strprintf("Regular expression filter to select benchmark by name (default: %s)", DEFAULT_BENCH_FILTER), false, OptionsCategory::OPTIONS);
      gArgs.AddArg("-scaling=<n>", strprintf("Scaling factor for benchmark's runtime (default: %u)", DEFAULT_BENCH_SCALING), false, OptionsCategory::OPTIONS);
      gArgs.AddArg("-printer=(console|plot)", strprintf("Choose printer format. console: print data to console. plot: Print results as HTML graph (default: %s)", DEFAULT_BENCH_PRINTER), false, OptionsCategory::OPTIONS);
      gArgs.AddArg("-plot-plotlyurl=<uri>", strprintf("URL to use for plotly.js (default: %s)", DEFAULT_PLOT_PLOTLYURL), false, OptionsCategory::OPTIONS);
      gArgs.AddArg("-plot-width=<x>", strprintf("Plot width in pixel (default: %u)", DEFAULT_PLOT_WIDTH), false, OptionsCategory::OPTIONS);
      gArgs.AddArg("-plot-height=<x>", strprintf("Plot height in pixel (default: %u)", DEFAULT_PLOT_HEIGHT), false, OptionsCategory::OPTIONS);
  }
  
  int main(int argc, char** argv)
  {
      SetupBenchArgs();
      std::string error;
      if (!gArgs.ParseParameters(argc, argv, error)) {
          tfm::format(std::cerr, "Error parsing command line arguments: %s\n", error.c_str());
          return EXIT_FAILURE;
      }
  
      if (HelpRequested(gArgs)) {
          std::cout << gArgs.GetHelpMessage();
  
          return EXIT_SUCCESS;
      }
  
      int64_t evaluations = gArgs.GetArg("-evals", DEFAULT_BENCH_EVALUATIONS);
      std::string regex_filter = gArgs.GetArg("-filter", DEFAULT_BENCH_FILTER);
      std::string scaling_str = gArgs.GetArg("-scaling", DEFAULT_BENCH_SCALING);
      bool is_list_only = gArgs.GetBoolArg("-list", false);
  
      double scaling_factor;
      if (!ParseDouble(scaling_str, &scaling_factor)) {
          tfm::format(std::cerr, "Error parsing scaling factor as double: %s\n", scaling_str.c_str());
          return EXIT_FAILURE;
      }
  
      std::unique_ptr<benchmark::Printer> printer = MakeUnique<benchmark::ConsolePrinter>();
      std::string printer_arg = gArgs.GetArg("-printer", DEFAULT_BENCH_PRINTER);
      if ("plot" == printer_arg) {
          printer.reset(new benchmark::PlotlyPrinter(
              gArgs.GetArg("-plot-plotlyurl", DEFAULT_PLOT_PLOTLYURL),
              gArgs.GetArg("-plot-width", DEFAULT_PLOT_WIDTH),
              gArgs.GetArg("-plot-height", DEFAULT_PLOT_HEIGHT)));
      }
  
      benchmark::BenchRunner::RunAll(*printer, evaluations, scaling_factor, regex_filter, is_list_only);
  
      return EXIT_SUCCESS;
  }
  