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541 lines
16 KiB
541 lines
16 KiB
3 years ago
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// Standard stream manipulators -*- C++ -*-
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// Copyright (C) 1997-2021 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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/** @file include/iomanip
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* This is a Standard C++ Library header.
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*/
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//
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// ISO C++ 14882: 27.6.3 Standard manipulators
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//
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#ifndef _GLIBCXX_IOMANIP
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#define _GLIBCXX_IOMANIP 1
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#pragma GCC system_header
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#include <bits/c++config.h>
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#include <iosfwd>
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#include <bits/ios_base.h>
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#if __cplusplus >= 201103L
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#include <locale>
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#if __cplusplus > 201103L
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#include <bits/quoted_string.h>
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#endif
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#endif
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namespace std _GLIBCXX_VISIBILITY(default)
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{
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_GLIBCXX_BEGIN_NAMESPACE_VERSION
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// [27.6.3] standard manipulators
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// Also see DR 183.
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struct _Resetiosflags { ios_base::fmtflags _M_mask; };
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/**
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* @brief Manipulator for @c setf.
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* @param __mask A format flags mask.
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*
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* Sent to a stream object, this manipulator resets the specified flags,
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* via @e stream.setf(0,__mask).
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*/
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inline _Resetiosflags
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resetiosflags(ios_base::fmtflags __mask)
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{ return { __mask }; }
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template<typename _CharT, typename _Traits>
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inline basic_istream<_CharT, _Traits>&
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operator>>(basic_istream<_CharT, _Traits>& __is, _Resetiosflags __f)
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{
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__is.setf(ios_base::fmtflags(0), __f._M_mask);
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return __is;
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}
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template<typename _CharT, typename _Traits>
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inline basic_ostream<_CharT, _Traits>&
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operator<<(basic_ostream<_CharT, _Traits>& __os, _Resetiosflags __f)
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{
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__os.setf(ios_base::fmtflags(0), __f._M_mask);
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return __os;
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}
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struct _Setiosflags { ios_base::fmtflags _M_mask; };
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/**
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* @brief Manipulator for @c setf.
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* @param __mask A format flags mask.
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*
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* Sent to a stream object, this manipulator sets the format flags
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* to @a __mask.
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*/
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inline _Setiosflags
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setiosflags(ios_base::fmtflags __mask)
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{ return { __mask }; }
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template<typename _CharT, typename _Traits>
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inline basic_istream<_CharT, _Traits>&
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operator>>(basic_istream<_CharT, _Traits>& __is, _Setiosflags __f)
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{
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__is.setf(__f._M_mask);
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return __is;
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}
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template<typename _CharT, typename _Traits>
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inline basic_ostream<_CharT, _Traits>&
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operator<<(basic_ostream<_CharT, _Traits>& __os, _Setiosflags __f)
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{
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__os.setf(__f._M_mask);
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return __os;
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}
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struct _Setbase { int _M_base; };
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/**
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* @brief Manipulator for @c setf.
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* @param __base A numeric base.
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*
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* Sent to a stream object, this manipulator changes the
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* @c ios_base::basefield flags to @c oct, @c dec, or @c hex when @a base
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* is 8, 10, or 16, accordingly, and to 0 if @a __base is any other value.
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*/
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inline _Setbase
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setbase(int __base)
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{ return { __base }; }
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template<typename _CharT, typename _Traits>
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inline basic_istream<_CharT, _Traits>&
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operator>>(basic_istream<_CharT, _Traits>& __is, _Setbase __f)
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{
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__is.setf(__f._M_base == 8 ? ios_base::oct :
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__f._M_base == 10 ? ios_base::dec :
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__f._M_base == 16 ? ios_base::hex :
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ios_base::fmtflags(0), ios_base::basefield);
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return __is;
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}
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template<typename _CharT, typename _Traits>
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inline basic_ostream<_CharT, _Traits>&
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operator<<(basic_ostream<_CharT, _Traits>& __os, _Setbase __f)
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{
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__os.setf(__f._M_base == 8 ? ios_base::oct :
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__f._M_base == 10 ? ios_base::dec :
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__f._M_base == 16 ? ios_base::hex :
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ios_base::fmtflags(0), ios_base::basefield);
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return __os;
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}
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template<typename _CharT>
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struct _Setfill { _CharT _M_c; };
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/**
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* @brief Manipulator for @c fill.
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* @param __c The new fill character.
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*
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* Sent to a stream object, this manipulator calls @c fill(__c) for that
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* object.
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*/
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template<typename _CharT>
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inline _Setfill<_CharT>
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setfill(_CharT __c)
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{ return { __c }; }
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template<typename _CharT, typename _Traits>
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inline basic_istream<_CharT, _Traits>&
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operator>>(basic_istream<_CharT, _Traits>& __is, _Setfill<_CharT> __f)
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{
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__is.fill(__f._M_c);
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return __is;
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}
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template<typename _CharT, typename _Traits>
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inline basic_ostream<_CharT, _Traits>&
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operator<<(basic_ostream<_CharT, _Traits>& __os, _Setfill<_CharT> __f)
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{
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__os.fill(__f._M_c);
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return __os;
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}
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struct _Setprecision { int _M_n; };
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/**
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* @brief Manipulator for @c precision.
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* @param __n The new precision.
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*
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* Sent to a stream object, this manipulator calls @c precision(__n) for
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* that object.
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*/
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inline _Setprecision
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setprecision(int __n)
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{ return { __n }; }
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template<typename _CharT, typename _Traits>
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inline basic_istream<_CharT, _Traits>&
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operator>>(basic_istream<_CharT, _Traits>& __is, _Setprecision __f)
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{
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__is.precision(__f._M_n);
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return __is;
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}
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template<typename _CharT, typename _Traits>
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inline basic_ostream<_CharT, _Traits>&
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operator<<(basic_ostream<_CharT, _Traits>& __os, _Setprecision __f)
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{
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__os.precision(__f._M_n);
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return __os;
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}
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struct _Setw { int _M_n; };
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/**
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* @brief Manipulator for @c width.
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* @param __n The new width.
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*
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* Sent to a stream object, this manipulator calls @c width(__n) for
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* that object.
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*/
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inline _Setw
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setw(int __n)
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{ return { __n }; }
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template<typename _CharT, typename _Traits>
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inline basic_istream<_CharT, _Traits>&
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operator>>(basic_istream<_CharT, _Traits>& __is, _Setw __f)
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{
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__is.width(__f._M_n);
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return __is;
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}
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template<typename _CharT, typename _Traits>
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inline basic_ostream<_CharT, _Traits>&
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operator<<(basic_ostream<_CharT, _Traits>& __os, _Setw __f)
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{
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__os.width(__f._M_n);
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return __os;
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}
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#if __cplusplus >= 201103L
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template<typename _MoneyT>
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struct _Get_money { _MoneyT& _M_mon; bool _M_intl; };
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/**
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* @brief Extended manipulator for extracting money.
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* @param __mon Either long double or a specialization of @c basic_string.
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* @param __intl A bool indicating whether international format
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* is to be used.
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*
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* Sent to a stream object, this manipulator extracts @a __mon.
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*/
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template<typename _MoneyT>
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inline _Get_money<_MoneyT>
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get_money(_MoneyT& __mon, bool __intl = false)
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{ return { __mon, __intl }; }
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template<typename _CharT, typename _Traits, typename _MoneyT>
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basic_istream<_CharT, _Traits>&
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operator>>(basic_istream<_CharT, _Traits>& __is, _Get_money<_MoneyT> __f)
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{
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typename basic_istream<_CharT, _Traits>::sentry __cerb(__is, false);
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if (__cerb)
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{
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ios_base::iostate __err = ios_base::goodbit;
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__try
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{
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typedef istreambuf_iterator<_CharT, _Traits> _Iter;
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typedef money_get<_CharT, _Iter> _MoneyGet;
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const _MoneyGet& __mg = use_facet<_MoneyGet>(__is.getloc());
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__mg.get(_Iter(__is.rdbuf()), _Iter(), __f._M_intl,
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__is, __err, __f._M_mon);
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}
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__catch(__cxxabiv1::__forced_unwind&)
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{
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__is._M_setstate(ios_base::badbit);
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__throw_exception_again;
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}
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__catch(...)
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{ __is._M_setstate(ios_base::badbit); }
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if (__err)
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__is.setstate(__err);
|
||
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}
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||
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return __is;
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||
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}
|
||
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template<typename _MoneyT>
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struct _Put_money { const _MoneyT& _M_mon; bool _M_intl; };
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/**
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* @brief Extended manipulator for inserting money.
|
||
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* @param __mon Either long double or a specialization of @c basic_string.
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* @param __intl A bool indicating whether international format
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* is to be used.
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*
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* Sent to a stream object, this manipulator inserts @a __mon.
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||
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*/
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template<typename _MoneyT>
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inline _Put_money<_MoneyT>
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put_money(const _MoneyT& __mon, bool __intl = false)
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||
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{ return { __mon, __intl }; }
|
||
|
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||
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template<typename _CharT, typename _Traits, typename _MoneyT>
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||
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|
basic_ostream<_CharT, _Traits>&
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||
|
|
operator<<(basic_ostream<_CharT, _Traits>& __os, _Put_money<_MoneyT> __f)
|
||
|
|
{
|
||
|
|
typename basic_ostream<_CharT, _Traits>::sentry __cerb(__os);
|
||
|
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if (__cerb)
|
||
|
|
{
|
||
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|
ios_base::iostate __err = ios_base::goodbit;
|
||
|
|
__try
|
||
|
|
{
|
||
|
|
typedef ostreambuf_iterator<_CharT, _Traits> _Iter;
|
||
|
|
typedef money_put<_CharT, _Iter> _MoneyPut;
|
||
|
|
|
||
|
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const _MoneyPut& __mp = use_facet<_MoneyPut>(__os.getloc());
|
||
|
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if (__mp.put(_Iter(__os.rdbuf()), __f._M_intl, __os,
|
||
|
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__os.fill(), __f._M_mon).failed())
|
||
|
|
__err |= ios_base::badbit;
|
||
|
|
}
|
||
|
|
__catch(__cxxabiv1::__forced_unwind&)
|
||
|
|
{
|
||
|
|
__os._M_setstate(ios_base::badbit);
|
||
|
|
__throw_exception_again;
|
||
|
|
}
|
||
|
|
__catch(...)
|
||
|
|
{ __os._M_setstate(ios_base::badbit); }
|
||
|
|
if (__err)
|
||
|
|
__os.setstate(__err);
|
||
|
|
}
|
||
|
|
return __os;
|
||
|
|
}
|
||
|
|
|
||
|
|
template<typename _CharT>
|
||
|
|
struct _Put_time
|
||
|
|
{
|
||
|
|
const std::tm* _M_tmb;
|
||
|
|
const _CharT* _M_fmt;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Extended manipulator for formatting time.
|
||
|
|
*
|
||
|
|
* This manipulator uses time_put::put to format time.
|
||
|
|
* [ext.manip]
|
||
|
|
*
|
||
|
|
* @param __tmb struct tm time data to format.
|
||
|
|
* @param __fmt format string.
|
||
|
|
*/
|
||
|
|
template<typename _CharT>
|
||
|
|
inline _Put_time<_CharT>
|
||
|
|
put_time(const std::tm* __tmb, const _CharT* __fmt)
|
||
|
|
{ return { __tmb, __fmt }; }
|
||
|
|
|
||
|
|
template<typename _CharT, typename _Traits>
|
||
|
|
basic_ostream<_CharT, _Traits>&
|
||
|
|
operator<<(basic_ostream<_CharT, _Traits>& __os, _Put_time<_CharT> __f)
|
||
|
|
{
|
||
|
|
typename basic_ostream<_CharT, _Traits>::sentry __cerb(__os);
|
||
|
|
if (__cerb)
|
||
|
|
{
|
||
|
|
ios_base::iostate __err = ios_base::goodbit;
|
||
|
|
__try
|
||
|
|
{
|
||
|
|
typedef ostreambuf_iterator<_CharT, _Traits> _Iter;
|
||
|
|
typedef time_put<_CharT, _Iter> _TimePut;
|
||
|
|
|
||
|
|
const _CharT* const __fmt_end = __f._M_fmt +
|
||
|
|
_Traits::length(__f._M_fmt);
|
||
|
|
|
||
|
|
const _TimePut& __mp = use_facet<_TimePut>(__os.getloc());
|
||
|
|
if (__mp.put(_Iter(__os.rdbuf()), __os, __os.fill(),
|
||
|
|
__f._M_tmb, __f._M_fmt, __fmt_end).failed())
|
||
|
|
__err |= ios_base::badbit;
|
||
|
|
}
|
||
|
|
__catch(__cxxabiv1::__forced_unwind&)
|
||
|
|
{
|
||
|
|
__os._M_setstate(ios_base::badbit);
|
||
|
|
__throw_exception_again;
|
||
|
|
}
|
||
|
|
__catch(...)
|
||
|
|
{ __os._M_setstate(ios_base::badbit); }
|
||
|
|
if (__err)
|
||
|
|
__os.setstate(__err);
|
||
|
|
}
|
||
|
|
return __os;
|
||
|
|
}
|
||
|
|
|
||
|
|
template<typename _CharT>
|
||
|
|
struct _Get_time
|
||
|
|
{
|
||
|
|
std::tm* _M_tmb;
|
||
|
|
const _CharT* _M_fmt;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Extended manipulator for extracting time.
|
||
|
|
*
|
||
|
|
* This manipulator uses time_get::get to extract time.
|
||
|
|
* [ext.manip]
|
||
|
|
*
|
||
|
|
* @param __tmb struct to extract the time data to.
|
||
|
|
* @param __fmt format string.
|
||
|
|
*/
|
||
|
|
template<typename _CharT>
|
||
|
|
inline _Get_time<_CharT>
|
||
|
|
get_time(std::tm* __tmb, const _CharT* __fmt)
|
||
|
|
{ return { __tmb, __fmt }; }
|
||
|
|
|
||
|
|
template<typename _CharT, typename _Traits>
|
||
|
|
basic_istream<_CharT, _Traits>&
|
||
|
|
operator>>(basic_istream<_CharT, _Traits>& __is, _Get_time<_CharT> __f)
|
||
|
|
{
|
||
|
|
typename basic_istream<_CharT, _Traits>::sentry __cerb(__is, false);
|
||
|
|
if (__cerb)
|
||
|
|
{
|
||
|
|
ios_base::iostate __err = ios_base::goodbit;
|
||
|
|
__try
|
||
|
|
{
|
||
|
|
typedef istreambuf_iterator<_CharT, _Traits> _Iter;
|
||
|
|
typedef time_get<_CharT, _Iter> _TimeGet;
|
||
|
|
|
||
|
|
const _CharT* const __fmt_end = __f._M_fmt +
|
||
|
|
_Traits::length(__f._M_fmt);
|
||
|
|
|
||
|
|
const _TimeGet& __mg = use_facet<_TimeGet>(__is.getloc());
|
||
|
|
__mg.get(_Iter(__is.rdbuf()), _Iter(), __is,
|
||
|
|
__err, __f._M_tmb, __f._M_fmt, __fmt_end);
|
||
|
|
}
|
||
|
|
__catch(__cxxabiv1::__forced_unwind&)
|
||
|
|
{
|
||
|
|
__is._M_setstate(ios_base::badbit);
|
||
|
|
__throw_exception_again;
|
||
|
|
}
|
||
|
|
__catch(...)
|
||
|
|
{ __is._M_setstate(ios_base::badbit); }
|
||
|
|
if (__err)
|
||
|
|
__is.setstate(__err);
|
||
|
|
}
|
||
|
|
return __is;
|
||
|
|
}
|
||
|
|
|
||
|
|
#if __cplusplus >= 201402L
|
||
|
|
|
||
|
|
#define __cpp_lib_quoted_string_io 201304
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Manipulator for quoted strings.
|
||
|
|
* @param __string String to quote.
|
||
|
|
* @param __delim Character to quote string with.
|
||
|
|
* @param __escape Escape character to escape itself or quote character.
|
||
|
|
*/
|
||
|
|
template<typename _CharT>
|
||
|
|
inline auto
|
||
|
|
quoted(const _CharT* __string,
|
||
|
|
_CharT __delim = _CharT('"'), _CharT __escape = _CharT('\\'))
|
||
|
|
{
|
||
|
|
return __detail::_Quoted_string<const _CharT*, _CharT>(__string, __delim,
|
||
|
|
__escape);
|
||
|
|
}
|
||
|
|
|
||
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
||
|
|
inline auto
|
||
|
|
quoted(const basic_string<_CharT, _Traits, _Alloc>& __string,
|
||
|
|
_CharT __delim = _CharT('"'), _CharT __escape = _CharT('\\'))
|
||
|
|
{
|
||
|
|
return __detail::_Quoted_string<
|
||
|
|
const basic_string<_CharT, _Traits, _Alloc>&, _CharT>(
|
||
|
|
__string, __delim, __escape);
|
||
|
|
}
|
||
|
|
|
||
|
|
template<typename _CharT, typename _Traits, typename _Alloc>
|
||
|
|
inline auto
|
||
|
|
quoted(basic_string<_CharT, _Traits, _Alloc>& __string,
|
||
|
|
_CharT __delim = _CharT('"'), _CharT __escape = _CharT('\\'))
|
||
|
|
{
|
||
|
|
return __detail::_Quoted_string<
|
||
|
|
basic_string<_CharT, _Traits, _Alloc>&, _CharT>(
|
||
|
|
__string, __delim, __escape);
|
||
|
|
}
|
||
|
|
|
||
|
|
#if __cplusplus >= 201703L
|
||
|
|
// _GLIBCXX_RESOLVE_LIB_DEFECTS
|
||
|
|
// 2785. quoted should work with basic_string_view
|
||
|
|
template<typename _CharT, typename _Traits>
|
||
|
|
inline auto
|
||
|
|
quoted(basic_string_view<_CharT, _Traits> __sv,
|
||
|
|
_CharT __delim = _CharT('"'), _CharT __escape = _CharT('\\'))
|
||
|
|
{
|
||
|
|
return __detail::_Quoted_string<
|
||
|
|
basic_string_view<_CharT, _Traits>, _CharT>(__sv, __delim, __escape);
|
||
|
|
}
|
||
|
|
#endif // C++17
|
||
|
|
#endif // C++14
|
||
|
|
|
||
|
|
#endif // __cplusplus >= 201103L
|
||
|
|
|
||
|
|
// Inhibit implicit instantiations for required instantiations,
|
||
|
|
// which are defined via explicit instantiations elsewhere.
|
||
|
|
// NB: This syntax is a GNU extension.
|
||
|
|
#if _GLIBCXX_EXTERN_TEMPLATE
|
||
|
|
extern template ostream& operator<<(ostream&, _Setfill<char>);
|
||
|
|
extern template ostream& operator<<(ostream&, _Setiosflags);
|
||
|
|
extern template ostream& operator<<(ostream&, _Resetiosflags);
|
||
|
|
extern template ostream& operator<<(ostream&, _Setbase);
|
||
|
|
extern template ostream& operator<<(ostream&, _Setprecision);
|
||
|
|
extern template ostream& operator<<(ostream&, _Setw);
|
||
|
|
extern template istream& operator>>(istream&, _Setfill<char>);
|
||
|
|
extern template istream& operator>>(istream&, _Setiosflags);
|
||
|
|
extern template istream& operator>>(istream&, _Resetiosflags);
|
||
|
|
extern template istream& operator>>(istream&, _Setbase);
|
||
|
|
extern template istream& operator>>(istream&, _Setprecision);
|
||
|
|
extern template istream& operator>>(istream&, _Setw);
|
||
|
|
|
||
|
|
#ifdef _GLIBCXX_USE_WCHAR_T
|
||
|
|
extern template wostream& operator<<(wostream&, _Setfill<wchar_t>);
|
||
|
|
extern template wostream& operator<<(wostream&, _Setiosflags);
|
||
|
|
extern template wostream& operator<<(wostream&, _Resetiosflags);
|
||
|
|
extern template wostream& operator<<(wostream&, _Setbase);
|
||
|
|
extern template wostream& operator<<(wostream&, _Setprecision);
|
||
|
|
extern template wostream& operator<<(wostream&, _Setw);
|
||
|
|
extern template wistream& operator>>(wistream&, _Setfill<wchar_t>);
|
||
|
|
extern template wistream& operator>>(wistream&, _Setiosflags);
|
||
|
|
extern template wistream& operator>>(wistream&, _Resetiosflags);
|
||
|
|
extern template wistream& operator>>(wistream&, _Setbase);
|
||
|
|
extern template wistream& operator>>(wistream&, _Setprecision);
|
||
|
|
extern template wistream& operator>>(wistream&, _Setw);
|
||
|
|
#endif
|
||
|
|
#endif
|
||
|
|
|
||
|
|
_GLIBCXX_END_NAMESPACE_VERSION
|
||
|
|
} // namespace
|
||
|
|
|
||
|
|
#endif /* _GLIBCXX_IOMANIP */
|