FnameTemplate.h

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#pragma once
 
#include <optional>
#include <string>
#include <string_view>
 
#include "../io/ParameterMap.h"
#include "../utils/error_handling.h"
 
class FnameTemplate
{
 public:
  FnameTemplate() = delete;
 
  FnameTemplate(bool separate_cycle_dirs, std::string outdir)
      : separate_cycle_dirs_(separate_cycle_dirs), outdir_(std::move(outdir))
  {
  }
 
  static FnameTemplate from_pmap(ParameterMap& pmap)
  {
    bool legacy_flat_outdir;
    int uncoerced = pmap.value_or("legacy_flat_outdir", 0);
    if (uncoerced == 0) {
      legacy_flat_outdir = false;
    } else if (uncoerced == 1) {
      legacy_flat_outdir = true;
    } else {
      CHOLLA_ERROR("legacy_flat_outdir parameter must be 1 or 0.");
    }
    return {not legacy_flat_outdir, pmap.value_or("outdir", "")};
  }
 
  bool separate_cycle_dirs() const noexcept { return separate_cycle_dirs_; }
 
  std::string nominal_output_dir_path() const noexcept { return outdir_; }
 
  std::string effective_output_dir_path(int nfile) const noexcept;
 
  std::string format_fname(int nfile, std::string_view pre_extension_suffix,
                           std::optional<std::string_view> post_extension_suffix = std::nullopt) const noexcept;
 
  std::string format_fname(int nfile, int file_proc_id, std::string_view pre_extension_suffix,
                           std::optional<std::string_view> post_extension_suffix = std::nullopt) const noexcept;
 private:
  bool separate_cycle_dirs_;
  std::string outdir_;
};