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Name	Size	Permission	Date
backward	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
bits	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
debug	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
decimal	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
experimental	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
ext	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
parallel	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
pstl	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
tr1	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
tr2	[ DIR ]	drwxr-xr-x	2026-04-26 19:49
algorithm	2.97 KB	-rw-r--r--	2025-12-18 20:59
any	18.38 KB	-rw-r--r--	2025-12-18 20:59
array	15.21 KB	-rw-r--r--	2025-12-18 20:59
atomic	50.36 KB	-rw-r--r--	2025-12-18 20:59
barrier	7.89 KB	-rw-r--r--	2025-12-18 20:59
bit	14.04 KB	-rw-r--r--	2025-12-18 20:59
bitset	49.14 KB	-rw-r--r--	2025-12-18 20:59
cassert	1.61 KB	-rw-r--r--	2025-12-18 20:59
ccomplex	1.3 KB	-rw-r--r--	2025-12-18 20:59
cctype	2.35 KB	-rw-r--r--	2025-12-18 20:59
cerrno	1.73 KB	-rw-r--r--	2025-12-18 20:59
cfenv	2 KB	-rw-r--r--	2025-12-18 20:59
cfloat	1.84 KB	-rw-r--r--	2025-12-18 20:59
charconv	29.52 KB	-rw-r--r--	2025-12-18 20:59
chrono	94.76 KB	-rw-r--r--	2025-12-18 20:59
cinttypes	2.11 KB	-rw-r--r--	2025-12-18 20:59
ciso646	1.43 KB	-rw-r--r--	2025-12-18 20:59
climits	1.87 KB	-rw-r--r--	2025-12-18 20:59
clocale	1.86 KB	-rw-r--r--	2025-12-18 20:59
cmath	91.77 KB	-rw-r--r--	2025-12-18 20:59
codecvt	5.15 KB	-rw-r--r--	2025-12-18 20:59
compare	36.91 KB	-rw-r--r--	2025-12-18 20:59
complex	74.66 KB	-rw-r--r--	2025-12-18 20:59
complex.h	1.56 KB	-rw-r--r--	2025-12-18 20:59
concepts	12.51 KB	-rw-r--r--	2025-12-18 20:59
condition_variable	12.59 KB	-rw-r--r--	2025-12-18 20:59
coroutine	9.44 KB	-rw-r--r--	2025-12-18 20:59
csetjmp	1.9 KB	-rw-r--r--	2025-12-18 20:59
csignal	1.81 KB	-rw-r--r--	2025-12-18 20:59
cstdalign	1.37 KB	-rw-r--r--	2025-12-18 20:59
cstdarg	1.82 KB	-rw-r--r--	2025-12-18 20:59
cstdbool	1.37 KB	-rw-r--r--	2025-12-18 20:59
cstddef	6.5 KB	-rw-r--r--	2025-12-18 20:59
cstdint	3.76 KB	-rw-r--r--	2025-12-18 20:59
cstdio	4.33 KB	-rw-r--r--	2025-12-18 20:59
cstdlib	6.38 KB	-rw-r--r--	2025-12-18 20:59
cstring	3.08 KB	-rw-r--r--	2025-12-18 20:59
ctgmath	1.33 KB	-rw-r--r--	2025-12-18 20:59
ctime	2.24 KB	-rw-r--r--	2025-12-18 20:59
cuchar	2.84 KB	-rw-r--r--	2025-12-18 20:59
cwchar	6.39 KB	-rw-r--r--	2025-12-18 20:59
cwctype	2.73 KB	-rw-r--r--	2025-12-18 20:59
cxxabi.h	21.76 KB	-rw-r--r--	2025-12-18 20:59
deque	4.39 KB	-rw-r--r--	2025-12-18 20:59
exception	5.28 KB	-rw-r--r--	2025-12-18 20:59
execution	1.83 KB	-rw-r--r--	2025-12-18 20:59
expected	49.72 KB	-rw-r--r--	2025-12-18 20:59
fenv.h	1.97 KB	-rw-r--r--	2025-12-18 20:59
filesystem	1.66 KB	-rw-r--r--	2025-12-18 20:59
format	113.64 KB	-rw-r--r--	2025-12-18 20:59
forward_list	2.65 KB	-rw-r--r--	2025-12-18 20:59
fstream	39.77 KB	-rw-r--r--	2025-12-18 20:59
functional	45.45 KB	-rw-r--r--	2025-12-18 20:59
future	51.89 KB	-rw-r--r--	2025-12-18 20:59
initializer_list	2.93 KB	-rw-r--r--	2025-12-18 20:59
iomanip	16.22 KB	-rw-r--r--	2025-12-18 20:59
ios	1.61 KB	-rw-r--r--	2025-12-18 20:59
iosfwd	8.21 KB	-rw-r--r--	2025-12-18 20:59
iostream	3 KB	-rw-r--r--	2025-12-18 20:59
istream	35.47 KB	-rw-r--r--	2025-12-18 20:59
iterator	2.76 KB	-rw-r--r--	2025-12-18 20:59
latch	2.72 KB	-rw-r--r--	2025-12-18 20:59
limits	76.4 KB	-rw-r--r--	2025-12-18 20:59
list	3.6 KB	-rw-r--r--	2025-12-18 20:59
locale	1.5 KB	-rw-r--r--	2025-12-18 20:59
map	4.05 KB	-rw-r--r--	2025-12-18 20:59
math.h	4.47 KB	-rw-r--r--	2025-12-18 20:59
memory	4.82 KB	-rw-r--r--	2025-12-18 20:59
memory_resource	14.14 KB	-rw-r--r--	2025-12-18 20:59
mutex	26.63 KB	-rw-r--r--	2025-12-18 20:59
new	8.45 KB	-rw-r--r--	2025-12-18 20:59
numbers	6.87 KB	-rw-r--r--	2025-12-18 20:59
numeric	25.38 KB	-rw-r--r--	2025-12-18 20:59
optional	44.1 KB	-rw-r--r--	2025-12-18 20:59
ostream	26.56 KB	-rw-r--r--	2025-12-18 20:59
queue	2.46 KB	-rw-r--r--	2025-12-18 20:59
random	1.71 KB	-rw-r--r--	2025-12-18 20:59
ranges	253.81 KB	-rw-r--r--	2025-12-18 20:59
ratio	20.97 KB	-rw-r--r--	2025-12-18 20:59
regex	3.08 KB	-rw-r--r--	2025-12-18 20:59
scoped_allocator	17.33 KB	-rw-r--r--	2025-12-18 20:59
semaphore	2.98 KB	-rw-r--r--	2025-12-18 20:59
set	3.91 KB	-rw-r--r--	2025-12-18 20:59
shared_mutex	24.52 KB	-rw-r--r--	2025-12-18 20:59
source_location	2.68 KB	-rw-r--r--	2025-12-18 20:59
span	13.82 KB	-rw-r--r--	2025-12-18 20:59
spanstream	12.17 KB	-rw-r--r--	2025-12-18 20:59
sstream	38.83 KB	-rw-r--r--	2025-12-18 20:59
stack	2.38 KB	-rw-r--r--	2025-12-18 20:59
stacktrace	21.37 KB	-rw-r--r--	2025-12-18 20:59
stdatomic.h	3.97 KB	-rw-r--r--	2025-12-18 20:59
stdexcept	9.65 KB	-rw-r--r--	2025-12-18 20:59
stdfloat	1.72 KB	-rw-r--r--	2025-12-18 20:59
stdlib.h	2.25 KB	-rw-r--r--	2025-12-18 20:59
stop_token	15.7 KB	-rw-r--r--	2025-12-18 20:59
streambuf	29.24 KB	-rw-r--r--	2025-12-18 20:59
string	3.87 KB	-rw-r--r--	2025-12-18 20:59
string_view	27.33 KB	-rw-r--r--	2025-12-18 20:59
syncstream	8.17 KB	-rw-r--r--	2025-12-18 20:59
system_error	17.96 KB	-rw-r--r--	2025-12-18 20:59
tgmath.h	1.33 KB	-rw-r--r--	2025-12-18 20:59
thread	7.33 KB	-rw-r--r--	2025-12-18 20:59
tuple	76.49 KB	-rw-r--r--	2025-12-18 20:59
type_traits	112.36 KB	-rw-r--r--	2025-12-18 20:59
typeindex	3.43 KB	-rw-r--r--	2025-12-18 20:59
typeinfo	8.11 KB	-rw-r--r--	2025-12-18 20:59
unordered_map	3.37 KB	-rw-r--r--	2025-12-18 20:59
unordered_set	3.23 KB	-rw-r--r--	2025-12-18 20:59
utility	6.98 KB	-rw-r--r--	2025-12-18 20:59
valarray	40.2 KB	-rw-r--r--	2025-12-18 20:59
variant	64.72 KB	-rw-r--r--	2025-12-18 20:59
vector	4.72 KB	-rw-r--r--	2025-12-18 20:59
version	12.32 KB	-rw-r--r--	2025-12-18 20:59

Rename

// Streams based on std::span -*- C++ -*-

// Copyright The GNU Toolchain Authors.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// Under Section 7 of GPL version 3, you are granted additional
// permissions described in the GCC Runtime Library Exception, version
// 3.1, as published by the Free Software Foundation.

// You should have received a copy of the GNU General Public License and
// a copy of the GCC Runtime Library Exception along with this program;
// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
// <http://www.gnu.org/licenses/>.

/** @file spanstream
 *  This is a Standard C++ Library header.
 */

#ifndef _GLIBCXX_SPANSTREAM
#define _GLIBCXX_SPANSTREAM 1

#pragma GCC system_header

#include <bits/requires_hosted.h> // iostreams

#if __cplusplus > 202002L
#include <span>
#include <streambuf>
#include <istream>
#include <ostream>
#include <bits/ranges_base.h>

#if __cpp_lib_span
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

#define __cpp_lib_spanstream 202106L

template<typename _CharT, typename _Traits>
  class basic_spanbuf
  : public basic_streambuf<_CharT, _Traits>
  {
    using __streambuf_type = basic_streambuf<_CharT, _Traits>;

public:
    using char_type   = _CharT;
    using int_type    = typename _Traits::int_type;
    using pos_type    = typename _Traits::pos_type;
    using off_type    = typename _Traits::off_type;
    using traits_type = _Traits;

// [spanbuf.ctor], constructors
    basic_spanbuf() : basic_spanbuf(ios_base::in | ios_base::out)
    { }

explicit
    basic_spanbuf(ios_base::openmode __which)
    : __streambuf_type(), _M_mode(__which)
    { }

explicit
    basic_spanbuf(std::span<_CharT> __s,
		  ios_base::openmode __which = ios_base::in | ios_base::out)
    : __streambuf_type(), _M_mode(__which)
    { span(__s); }

basic_spanbuf(const basic_spanbuf&) = delete;

/** Move constructor.
     *
     * Transfers the buffer and pointers into the get and put areas from
     * `__rhs` to `*this`.
     *
     * In this implementation `rhs` is left unchanged,
     * but that is not guaranteed by the standard.
     */
    basic_spanbuf(basic_spanbuf&& __rhs)
    : __streambuf_type(__rhs), _M_mode(__rhs._M_mode), _M_buf(__rhs._M_buf)
    { }

// [spanbuf.assign], assignment and swap
    basic_spanbuf& operator=(const basic_spanbuf&) = delete;

basic_spanbuf&
    operator=(basic_spanbuf&& __rhs)
    {
      basic_spanbuf(std::move(__rhs)).swap(*this);
      return *this;
    }

void
    swap(basic_spanbuf& __rhs)
    {
      __streambuf_type::swap(__rhs);
      std::swap(_M_mode, __rhs._M_mode);
      std::swap(_M_buf, __rhs._M_buf);
    }

// [spanbuf.members], member functions
    std::span<_CharT>
    span() const noexcept
    {
      if (_M_mode & ios_base::out)
	return {this->pbase(), this->pptr()};
      else
	return _M_buf;
    }

void
    span(std::span<_CharT> __s) noexcept
    {
      _M_buf = __s;
      if (_M_mode & ios_base::out)
	{
	  this->setp(__s.data(), __s.data() + __s.size());
	  if (_M_mode & ios_base::ate)
	    this->pbump(__s.size());
	}
      if (_M_mode & ios_base::in)
	this->setg(__s.data(), __s.data(), __s.data() + __s.size());
    }

protected:
    // [spanbuf.virtuals], overridden virtual functions
    basic_streambuf<_CharT, _Traits>*
    setbuf(_CharT* __s, streamsize __n) override
    {
      __glibcxx_assert(__n >= 0);
      this->span(std::span<_CharT>(__s, __n));
      return this;
    }

pos_type
    seekoff(off_type __off, ios_base::seekdir __way,
	    ios_base::openmode __which = ios_base::in | ios_base::out) override
    {
      pos_type __ret =  pos_type(off_type(-1));

if (__way == ios_base::beg)
	{
	  if (0 <= __off && __off <= _M_buf.size())
	    {
	      if (__which & ios_base::in)
		this->setg(this->eback(), this->eback() + __off, this->egptr());

if (__which & ios_base::out)
		{
		  this->setp(this->pbase(), this->epptr());
		  this->pbump(__off);
		}

__ret = pos_type(__off);
	    }
	}
      else
	{
	  off_type __base;
	  __which &= (ios_base::in|ios_base::out);

if (__which == ios_base::out)
	    __base = this->pptr() - this->pbase();
	  else if (__way == ios_base::cur)
	    {
	      if (__which == ios_base::in)
		__base = this->gptr() - this->eback();
	      else
		return __ret;
	    }
	  else if (__way == ios_base::end)
	    __base = _M_buf.size();

if (__builtin_add_overflow(__base, __off, &__off))
	    return __ret;

if (__off < 0 || __off > _M_buf.size())
	    return __ret;

if (__which & ios_base::in)
	    this->setg(this->eback(), this->eback() + __off, this->egptr());

if (__which & ios_base::out)
	    {
	      this->setp(this->pbase(), this->epptr());
	      this->pbump(__off);
	    }

__ret = pos_type(__off);

}
      return __ret;
    }

pos_type
    seekpos(pos_type __sp,
	    ios_base::openmode __which = ios_base::in | ios_base::out) override
    { return seekoff(off_type(__sp), ios_base::beg, __which); }

private:

ios_base::openmode _M_mode;
    std::span<_CharT> _M_buf;
  };

template<typename _CharT, typename _Traits>
  inline void
  swap(basic_spanbuf<_CharT, _Traits>& __x,
       basic_spanbuf<_CharT, _Traits>& __y)
  { __x.swap(__y); }

using spanbuf = basic_spanbuf<char>;
using wspanbuf = basic_spanbuf<wchar_t>;

template<typename _CharT, typename _Traits>
  class basic_ispanstream
  : public basic_istream<_CharT, _Traits>
  {
    using __istream_type = basic_istream<_CharT, _Traits>;

// [ispanstream.ctor], constructors
    explicit
    basic_ispanstream(std::span<_CharT> __s,
		      ios_base::openmode __which = ios_base::in)
    : __istream_type(std::__addressof(_M_sb)),
      _M_sb(__s, __which | ios_base::in)
    { }

basic_ispanstream(const basic_ispanstream&) = delete;

basic_ispanstream(basic_ispanstream&& __rhs)
    : __istream_type(std::move(__rhs)), _M_sb(std::move(__rhs._M_sb))
    {
      __istream_type::set_rdbuf(std::addressof(_M_sb));
    }

template<typename _Ros>
      requires ranges::borrowed_range<_Ros>
	&& (!convertible_to<_Ros, std::span<_CharT>>)
	&& convertible_to<_Ros, std::span<const _CharT>>
      explicit
      basic_ispanstream(_Ros&& __s)
      : __istream_type(std::__addressof(_M_sb)),
	_M_sb(ios_base::in)
      {
	std::span<const _CharT> __sp(std::forward<_Ros>(__s));
	_M_sb.span({const_cast<_CharT*>(__sp.data()), __sp.size()});
      }

// [ispanstream.assign], assignment and swap
    basic_ispanstream& operator=(const basic_ispanstream&) = delete;
    basic_ispanstream& operator=(basic_ispanstream&& __rhs) = default;

void
    swap(basic_ispanstream& __rhs)
    {
      __istream_type::swap(__rhs);
      _M_sb.swap(__rhs._M_sb);
    }

// [ispanstream.members], member functions
    basic_spanbuf<_CharT, _Traits>*
    rdbuf() const noexcept
    {
      return const_cast<basic_spanbuf<_CharT, _Traits>*>(std::__addressof(_M_sb));
    }

std::span<const _CharT>
    span() const noexcept
    { return _M_sb.span(); }

void
    span(std::span<_CharT> __s) noexcept
    { return _M_sb.span(__s); }

template<typename _Ros>
      requires ranges::borrowed_range<_Ros>
	&& (!convertible_to<_Ros, std::span<_CharT>>)
	&& convertible_to<_Ros, std::span<const _CharT>>
      void
      span(_Ros&& __s) noexcept
      {
	std::span<const _CharT> __sp(std::forward<_Ros>(__s));
	_M_sb.span({const_cast<_CharT*>(__sp.data()), __sp.size()});
      }

private:
    basic_spanbuf<_CharT, _Traits> _M_sb;
  };

template<typename _CharT, typename _Traits>
  inline void
  swap(basic_ispanstream<_CharT, _Traits>& __x,
       basic_ispanstream<_CharT, _Traits>& __y)
  { __x.swap(__y); }

using ispanstream = basic_ispanstream<char>;
using wispanstream = basic_ispanstream<wchar_t>;

template<typename _CharT, typename _Traits>
  class basic_ospanstream
  : public basic_ostream<_CharT, _Traits>
  {
    using __ostream_type = basic_ostream<_CharT, _Traits>;

// [ospanstream.ctor], constructors
    explicit
    basic_ospanstream(std::span<_CharT> __s,
		      ios_base::openmode __which = ios_base::out)
    : __ostream_type(std::__addressof(_M_sb)),
      _M_sb(__s, __which | ios_base::in)
    { }

basic_ospanstream(const basic_ospanstream&) = delete;

basic_ospanstream(basic_ospanstream&& __rhs)
    : __ostream_type(std::move(__rhs)), _M_sb(std::move(__rhs._M_sb))
    {
      __ostream_type::set_rdbuf(std::addressof(_M_sb));
    }

// [ospanstream.assign], assignment and swap
    basic_ospanstream& operator=(const basic_ospanstream&) = delete;
    basic_ospanstream& operator=(basic_ospanstream&& __rhs) = default;

void
    swap(basic_ospanstream& __rhs)
    {
      __ostream_type::swap(__rhs);
      _M_sb.swap(__rhs._M_sb);
    }

// [ospanstream.members], member functions
    basic_spanbuf<_CharT, _Traits>*
    rdbuf() const noexcept
    {
      return const_cast<basic_spanbuf<_CharT, _Traits>*>(std::__addressof(_M_sb));
    }

std::span<_CharT>
    span() const noexcept
    { return _M_sb.span(); }

void
    span(std::span<_CharT> __s) noexcept
    { return _M_sb.span(__s); }

private:
    basic_spanbuf<_CharT, _Traits> _M_sb;
  };

template<typename _CharT, typename _Traits>
  inline void
  swap(basic_ospanstream<_CharT, _Traits>& __x,
       basic_ospanstream<_CharT, _Traits>& __y)
  { __x.swap(__y); }

using ospanstream = basic_ospanstream<char>;
using wospanstream = basic_ospanstream<wchar_t>;

template<typename _CharT, typename _Traits>
  class basic_spanstream
  : public basic_iostream<_CharT, _Traits>
  {
    using __iostream_type = basic_iostream<_CharT, _Traits>;

// [spanstream.ctor], constructors
    explicit
    basic_spanstream(std::span<_CharT> __s,
		     ios_base::openmode __which = ios_base::out | ios_base::in)
    : __iostream_type(std::__addressof(_M_sb)),
      _M_sb(__s, __which)
    { }

basic_spanstream(const basic_spanstream&) = delete;

basic_spanstream(basic_spanstream&& __rhs)
    : __iostream_type(std::move(__rhs)), _M_sb(std::move(__rhs._M_sb))
    {
      __iostream_type::set_rdbuf(std::addressof(_M_sb));
    }

// [spanstream.assign], assignment and swap
    basic_spanstream& operator=(const basic_spanstream&) = delete;
    basic_spanstream& operator=(basic_spanstream&& __rhs) = default;

void
    swap(basic_spanstream& __rhs)
    {
      __iostream_type::swap(__rhs);
      _M_sb.swap(__rhs._M_sb);
    }

// [spanstream.members], members
    basic_spanbuf<_CharT, _Traits>*
    rdbuf() const noexcept
    {
      return const_cast<basic_spanbuf<_CharT, _Traits>*>(std::__addressof(_M_sb));
    }

std::span<_CharT>
    span() const noexcept
    { return _M_sb.span(); }

void
    span(std::span<_CharT> __s) noexcept
    { return _M_sb.span(__s); }

private:
    basic_spanbuf<_CharT, _Traits> _M_sb;
  };

template<typename _CharT, typename _Traits>
  inline void
  swap(basic_spanstream<_CharT, _Traits>& __x,
       basic_spanstream<_CharT, _Traits>& __y)
  { __x.swap(__y); }

using spanstream = basic_spanstream<char>;
using wspanstream = basic_spanstream<wchar_t>;

_GLIBCXX_END_NAMESPACE_VERSION
} // namespace std
#endif // __cpp_lib_span
#endif // C++23
#endif // _GLIBCXX_SPANSTREAM