buf2str.h

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// SPDX-FileCopyrightText: 2000-2004, 2007, 2018, 2020, 2025-2026 Carlo Wood
// SPDX-License-Identifier: MIT
 
#pragma once

 
#ifndef LIBCWD_BUF2STR_H
#define LIBCWD_BUF2STR_H
 
#include "char2str.h"
 
#include <cstddef> // Needed for size_t
#include <iosfwd>
#if __cpp_concepts >= 201907L
#include <concepts>
#endif
 
namespace libcwd {

 
class buf2str
{
 private:
  char const* buf_; 
  size_t size_; 
 
 public:
  buf2str(char const* buf, size_t size) : buf_(buf), size_(size) { }
 
#if __cpp_concepts >= 201907L
  template<typename T>
  requires requires(T const& t) {
    { t.data() } -> std::convertible_to<char const*>;
    { t.size() } -> std::convertible_to<size_t>;
  }
  buf2str(T const& view) : buf_(view.data()), size_(view.size())
  {
  }
#endif

  friend inline std::ostream& operator<<(std::ostream& os, buf2str const& __buf2str)
  {
    size_t size = __buf2str.size_;
    for (char const* p1 = __buf2str.buf_; size > 0; --size, ++p1)
      os << char2str(*p1);
    return os;
  }
};
 
} // namespace libcwd
 
#endif // LIBCWD_BUF2STR_H