stream_io.hpp

#ifndef __STREAM_IO_HPP__
#define __STREAM_IO_HPP__
 
#include <biocma_cst_config.hpp> // IWYU pragma: keep
#include <sstream>
#include <streambuf>
int redirect_stdout(std::streambuf*& original_buffer, std::stringstream& variable_stream);
 
void restore_stdout(int original_stdout, std::streambuf*& original_buffer);
 
// // C Style Macro to hide implementation detail in Main
// // If redirect, capture the stdout during block execution in a buffer and print
// // it at the end of the block
#define REDIRECT_SCOPE(__block__) /*NOLINT*/                                                       \
  if constexpr ((AutoGenerated::FlagCompileTime::__f__redirect__))                                 \
  {                                                                                                \
    std::stringstream output_variable;                                                             \
    output_variable.str("");                                                                       \
    std::streambuf* original_buffer = nullptr;                                                     \
    auto original_stdout_fd = redirect_stdout(original_buffer, output_variable);                   \
    try                                                                                            \
    {                                                                                              \
      __block__;                                                                                   \
    }                                                                                              \
    catch (...)                                                                                    \
    {                                                                                              \
      restore_stdout(original_stdout_fd, original_buffer);                                         \
      throw;                                                                                       \
    }                                                                                              \
    restore_stdout(original_stdout_fd, original_buffer);                                           \
    if constexpr ((AutoGenerated::FlagCompileTime::verbose))                                       \
    {                                                                                              \
      std::cout << output_variable.str() << std::endl;                                             \
    }                                                                                              \
  }                                                                                                \
  else                                                                                             \
  {                                                                                                \
    __block__;                                                                                     \
  }
 
#endif