BufferStream.h

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// SPDX-FileCopyrightText: 2003-2005, 2018, 2020, 2023, 2026 Carlo Wood
// SPDX-License-Identifier: MIT
 
#pragma once

 
#ifndef LIBCWD_PRIVATE_BUFFERSTREAM_H
#define LIBCWD_PRIVATE_BUFFERSTREAM_H
 
#include "libcwd/config.h"
 
#ifndef HIDE_FROM_DOXYGEN
namespace libcwd::_private_ {
 
// This is a pseudo stringstream that allows the stringbuf to be changed on
// the fly.
class BufferStream : public std::ostream
{
 public:
  using char_type = char;
  using traits_type = std::char_traits<char>;
  using allocator_type = ::std::allocator<char_type>;
  using int_type = traits_type::int_type;
  using pos_type = traits_type::pos_type;
  using off_type = traits_type::off_type;
  using string_type = std::basic_string<char_type, traits_type, allocator_type>;
  using stringbuf_type = std::basic_stringbuf<char_type, traits_type, allocator_type>;
 
 private:
  stringbuf_type* stringbuf_;
 
 public:
  explicit BufferStream(stringbuf_type* sb) : std::basic_ostream<char, std::char_traits<char>>(sb), stringbuf_(sb) { }
  ~BufferStream() { }
 
  stringbuf_type* rdbuf() const { return stringbuf_; }
  string_type str() const { return stringbuf_->str(); }
  void str(string_type const& s) { stringbuf_->str(s); }
};
 
} // namespace libcwd::_private_
#endif // HIDE_FROM_DOXYGEN
 
#endif // LIBCWD_PRIVATE_BUFFERSTREAM_H