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// Standard stream manipulators -*- C++ -*- |
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|
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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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|
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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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|
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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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|
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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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|
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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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// |
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// ISO C++ 14882: 27.6.3 Standard manipulators |
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// |
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|
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#ifndef _GLIBCXX_IOMANIP |
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#define _GLIBCXX_IOMANIP 1 |
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|
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#pragma GCC system_header |
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|
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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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|
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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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|
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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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|
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// [27.6.3] standard manipulators |
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// Also see DR 183. |
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|
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struct _Resetiosflags { ios_base::fmtflags _M_mask; }; |
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|
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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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|
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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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|
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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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|
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|
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struct _Setiosflags { ios_base::fmtflags _M_mask; }; |
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|
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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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|
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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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|
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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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|
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|
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struct _Setbase { int _M_base; }; |
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|
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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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|
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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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|
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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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|
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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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/** |
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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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|
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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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|
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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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|
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|
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struct _Setprecision { int _M_n; }; |
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|
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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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|
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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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|
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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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|
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|
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struct _Setw { int _M_n; }; |
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|
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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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|
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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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|
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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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|
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#if __cplusplus >= 201103L |
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|
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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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/** |
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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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|
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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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|
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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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return __is; |
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} |
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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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/** |
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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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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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{ return { __mon, __intl }; } |
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|
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template<typename _CharT, typename _Traits, typename _MoneyT> |
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basic_ostream<_CharT, _Traits>& |
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operator<<(basic_ostream<_CharT, _Traits>& __os, _Put_money<_MoneyT> __f) |
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{ |
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typename basic_ostream<_CharT, _Traits>::sentry __cerb(__os); |
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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 ostreambuf_iterator<_CharT, _Traits> _Iter; |
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typedef money_put<_CharT, _Iter> _MoneyPut; |
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|
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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()) |
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__err |= ios_base::badbit; |
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} |
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__catch(__cxxabiv1::__forced_unwind&) |
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{ |
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__os._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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{ __os._M_setstate(ios_base::badbit); } |
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if (__err) |
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__os.setstate(__err); |
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} |
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return __os; |
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} |
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|
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template<typename _CharT> |
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struct _Put_time |
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{ |
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const std::tm* _M_tmb; |
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const _CharT* _M_fmt; |
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}; |
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|
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/** |
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* @brief Extended manipulator for formatting time. |
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* |
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* This manipulator uses time_put::put to format time. |
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* [ext.manip] |
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* |
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* @param __tmb struct tm time data to format. |
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* @param __fmt format string. |
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*/ |
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template<typename _CharT> |
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inline _Put_time<_CharT> |
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put_time(const std::tm* __tmb, const _CharT* __fmt) |
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{ return { __tmb, __fmt }; } |
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|
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template<typename _CharT, typename _Traits> |
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basic_ostream<_CharT, _Traits>& |
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operator<<(basic_ostream<_CharT, _Traits>& __os, _Put_time<_CharT> __f) |
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{ |
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typename basic_ostream<_CharT, _Traits>::sentry __cerb(__os); |
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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 ostreambuf_iterator<_CharT, _Traits> _Iter; |
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typedef time_put<_CharT, _Iter> _TimePut; |
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|
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const _CharT* const __fmt_end = __f._M_fmt + |
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_Traits::length(__f._M_fmt); |
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|
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const _TimePut& __mp = use_facet<_TimePut>(__os.getloc()); |
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if (__mp.put(_Iter(__os.rdbuf()), __os, __os.fill(), |
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__f._M_tmb, __f._M_fmt, __fmt_end).failed()) |
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__err |= ios_base::badbit; |
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} |
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__catch(__cxxabiv1::__forced_unwind&) |
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{ |
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__os._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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{ __os._M_setstate(ios_base::badbit); } |
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if (__err) |
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__os.setstate(__err); |
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} |
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return __os; |
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} |
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|
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template<typename _CharT> |
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struct _Get_time |
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{ |
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std::tm* _M_tmb; |
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const _CharT* _M_fmt; |
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}; |
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|
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/** |
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* @brief Extended manipulator for extracting time. |
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* |
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* This manipulator uses time_get::get to extract time. |
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* [ext.manip] |
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* |
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* @param __tmb struct to extract the time data to. |
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* @param __fmt format string. |
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*/ |
| 411 |
template<typename _CharT> |
| 412 |
inline _Get_time<_CharT> |
| 413 |
get_time(std::tm* __tmb, const _CharT* __fmt) |
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{ return { __tmb, __fmt }; } |
| 415 |
|
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template<typename _CharT, typename _Traits> |
| 417 |
basic_istream<_CharT, _Traits>& |
| 418 |
operator>>(basic_istream<_CharT, _Traits>& __is, _Get_time<_CharT> __f) |
| 419 |
{ |
| 420 |
typename basic_istream<_CharT, _Traits>::sentry __cerb(__is, false); |
| 421 |
if (__cerb) |
| 422 |
{ |
| 423 |
ios_base::iostate __err = ios_base::goodbit; |
| 424 |
__try |
| 425 |
{ |
| 426 |
typedef istreambuf_iterator<_CharT, _Traits> _Iter; |
| 427 |
typedef time_get<_CharT, _Iter> _TimeGet; |
| 428 |
|
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const _CharT* const __fmt_end = __f._M_fmt + |
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_Traits::length(__f._M_fmt); |
| 431 |
|
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const _TimeGet& __mg = use_facet<_TimeGet>(__is.getloc()); |
| 433 |
__mg.get(_Iter(__is.rdbuf()), _Iter(), __is, |
| 434 |
__err, __f._M_tmb, __f._M_fmt, __fmt_end); |
| 435 |
} |
| 436 |
__catch(__cxxabiv1::__forced_unwind&) |
| 437 |
{ |
| 438 |
__is._M_setstate(ios_base::badbit); |
| 439 |
__throw_exception_again; |
| 440 |
} |
| 441 |
__catch(...) |
| 442 |
{ __is._M_setstate(ios_base::badbit); } |
| 443 |
if (__err) |
| 444 |
__is.setstate(__err); |
| 445 |
} |
| 446 |
return __is; |
| 447 |
} |
| 448 |
|
| 449 |
#if __cplusplus >= 201402L |
| 450 |
|
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#define __cpp_lib_quoted_string_io 201304 |
| 452 |
|
| 453 |
/** |
| 454 |
* @brief Manipulator for quoted strings. |
| 455 |
* @param __string String to quote. |
| 456 |
* @param __delim Character to quote string with. |
| 457 |
* @param __escape Escape character to escape itself or quote character. |
| 458 |
*/ |
| 459 |
template<typename _CharT> |
| 460 |
inline auto |
| 461 |
quoted(const _CharT* __string, |
| 462 |
_CharT __delim = _CharT('"'), _CharT __escape = _CharT('\\')) |
| 463 |
{ |
| 464 |
return __detail::_Quoted_string<const _CharT*, _CharT>(__string, __delim, |
| 465 |
__escape); |
| 466 |
} |
| 467 |
|
| 468 |
template<typename _CharT, typename _Traits, typename _Alloc> |
| 469 |
inline auto |
| 470 |
quoted(const basic_string<_CharT, _Traits, _Alloc>& __string, |
| 471 |
_CharT __delim = _CharT('"'), _CharT __escape = _CharT('\\')) |
| 472 |
{ |
| 473 |
return __detail::_Quoted_string< |
| 474 |
const basic_string<_CharT, _Traits, _Alloc>&, _CharT>( |
| 475 |
__string, __delim, __escape); |
| 476 |
} |
| 477 |
|
| 478 |
template<typename _CharT, typename _Traits, typename _Alloc> |
| 479 |
inline auto |
| 480 |
quoted(basic_string<_CharT, _Traits, _Alloc>& __string, |
| 481 |
_CharT __delim = _CharT('"'), _CharT __escape = _CharT('\\')) |
| 482 |
{ |
| 483 |
return __detail::_Quoted_string< |
| 484 |
basic_string<_CharT, _Traits, _Alloc>&, _CharT>( |
| 485 |
__string, __delim, __escape); |
| 486 |
} |
| 487 |
|
| 488 |
#if __cplusplus >= 201703L |
| 489 |
// _GLIBCXX_RESOLVE_LIB_DEFECTS |
| 490 |
// 2785. quoted should work with basic_string_view |
| 491 |
template<typename _CharT, typename _Traits> |
| 492 |
inline auto |
| 493 |
quoted(basic_string_view<_CharT, _Traits> __sv, |
| 494 |
_CharT __delim = _CharT('"'), _CharT __escape = _CharT('\\')) |
| 495 |
{ |
| 496 |
return __detail::_Quoted_string< |
| 497 |
basic_string_view<_CharT, _Traits>, _CharT>(__sv, __delim, __escape); |
| 498 |
} |
| 499 |
#endif // C++17 |
| 500 |
#endif // C++14 |
| 501 |
|
| 502 |
#endif // __cplusplus >= 201103L |
| 503 |
|
| 504 |
// Inhibit implicit instantiations for required instantiations, |
| 505 |
// which are defined via explicit instantiations elsewhere. |
| 506 |
// NB: This syntax is a GNU extension. |
| 507 |
#if _GLIBCXX_EXTERN_TEMPLATE |
| 508 |
extern template ostream& operator<<(ostream&, _Setfill<char>); |
| 509 |
extern template ostream& operator<<(ostream&, _Setiosflags); |
| 510 |
extern template ostream& operator<<(ostream&, _Resetiosflags); |
| 511 |
extern template ostream& operator<<(ostream&, _Setbase); |
| 512 |
extern template ostream& operator<<(ostream&, _Setprecision); |
| 513 |
extern template ostream& operator<<(ostream&, _Setw); |
| 514 |
extern template istream& operator>>(istream&, _Setfill<char>); |
| 515 |
extern template istream& operator>>(istream&, _Setiosflags); |
| 516 |
extern template istream& operator>>(istream&, _Resetiosflags); |
| 517 |
extern template istream& operator>>(istream&, _Setbase); |
| 518 |
extern template istream& operator>>(istream&, _Setprecision); |
| 519 |
extern template istream& operator>>(istream&, _Setw); |
| 520 |
|
| 521 |
#ifdef _GLIBCXX_USE_WCHAR_T |
| 522 |
extern template wostream& operator<<(wostream&, _Setfill<wchar_t>); |
| 523 |
extern template wostream& operator<<(wostream&, _Setiosflags); |
| 524 |
extern template wostream& operator<<(wostream&, _Resetiosflags); |
| 525 |
extern template wostream& operator<<(wostream&, _Setbase); |
| 526 |
extern template wostream& operator<<(wostream&, _Setprecision); |
| 527 |
extern template wostream& operator<<(wostream&, _Setw); |
| 528 |
extern template wistream& operator>>(wistream&, _Setfill<wchar_t>); |
| 529 |
extern template wistream& operator>>(wistream&, _Setiosflags); |
| 530 |
extern template wistream& operator>>(wistream&, _Resetiosflags); |
| 531 |
extern template wistream& operator>>(wistream&, _Setbase); |
| 532 |
extern template wistream& operator>>(wistream&, _Setprecision); |
| 533 |
extern template wistream& operator>>(wistream&, _Setw); |
| 534 |
#endif |
| 535 |
#endif |
| 536 |
|
| 537 |
_GLIBCXX_END_NAMESPACE_VERSION |
| 538 |
} // namespace |
| 539 |
|
| 540 |
#endif /* _GLIBCXX_IOMANIP */ |
