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#ifndef TEMPLAT_UTIL_STRINGTRIMMER_H
#define TEMPLAT_UTIL_STRINGTRIMMER_H

/* This file is part of TempLat, available at https://cosmolattice.github.io/templat .
   Copyright 2021-2026 The TempLat authors, see AUTHORS.md.
   Released under the MIT license, see LICENSE.md. */

// File info: Main contributor(s): Wessel Valkenburg, Year: 2019

/* from http://stackoverflow.com/a/217605 */
// 2022: Adapted  to lambdas.

#include <algorithm>
#include <functional>
#include <cctype>
#include <locale>

namespace TempLat
{

  class StringTrimmer
  {
  public:
    // Put public methods here. These should change very little over time.
    static inline void ltrim(std::string &s)
    {
      s.erase(s.begin(), std::find_if(s.begin(), s.end(), [](int c) { return !std::isspace(c); }));
    }

    // trim from end (in place)
    static inline void rtrim(std::string &s)
    {
      s.erase(std::find_if(s.rbegin(), s.rend(), [](int c) { return !std::isspace(c); }).base(), s.end());
    }

    // trim from both ends (in place)
    static inline void trim(std::string &s)
    {
      ltrim(s);
      rtrim(s);
    }

    // trim from start (copying)
    static inline std::string ltrimmed(std::string s)
    {
      ltrim(s);
      return s;
    }

    // trim from end (copying)
    static inline std::string rtrimmed(std::string s)
    {
      rtrim(s);
      return s;
    }

    // trim from both ends (copying)
    static inline std::string trimmed(std::string s)
    {
      trim(s);
      return s;
    }

  private:
    /* Put all member variables and private methods here. These may change arbitrarily. */
  };

} // namespace TempLat

#endif