string_helpers.hpp

// This file is part of the ACTS project.
//
// Copyright (C) 2016 CERN for the benefit of the ACTS project
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at https://mozilla.org/MPL/2.0/.
 
#pragma once
 
// Project include(s)
#include "detray/definitions/containers.hpp"
 
// System include(s)
#include <ranges>
#include <string>
#include <string_view>
 
namespace detray::utils {

struct string_view_concat2 {
  std::string_view s1;
  std::string_view s2;

  explicit operator std::string() const {
    return std::string(s1) + std::string(s2);
  }
};

inline dvector<std::string> split_at_delim(const std::string &input,
                                           const char delim) {
  dvector<std::string> tokens{};
 
  for (const auto char_range : std::views::split(input, delim)) {
    std::string s{""};
    // TODO: Remove when range constructor becomes available in c++23
    for (const char c : char_range) {
      s.push_back(c);
    }
    tokens.push_back(std::move(s));
  }
 
  return tokens;
}
 
}  // namespace detray::utils