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// Helpers for ostream inserters -*- C++ -*- |
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// Copyright (C) 2007-2021 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 bits/ostream_insert.h |
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* This is an internal header file, included by other library headers. |
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* Do not attempt to use it directly. @headername{ostream} |
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*/ |
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|
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#ifndef _OSTREAM_INSERT_H |
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#define _OSTREAM_INSERT_H 1 |
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|
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#pragma GCC system_header |
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|
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#include <iosfwd> |
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#include <bits/cxxabi_forced.h> |
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#include <bits/exception_defines.h> |
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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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template<typename _CharT, typename _Traits> |
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inline void |
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__ostream_write(basic_ostream<_CharT, _Traits>& __out, |
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const _CharT* __s, streamsize __n) |
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{ |
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typedef basic_ostream<_CharT, _Traits> __ostream_type; |
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typedef typename __ostream_type::ios_base __ios_base; |
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|
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const streamsize __put = __out.rdbuf()->sputn(__s, __n); |
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if (__put != __n) |
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__out.setstate(__ios_base::badbit); |
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} |
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|
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template<typename _CharT, typename _Traits> |
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inline void |
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__ostream_fill(basic_ostream<_CharT, _Traits>& __out, streamsize __n) |
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{ |
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typedef basic_ostream<_CharT, _Traits> __ostream_type; |
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typedef typename __ostream_type::ios_base __ios_base; |
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|
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const _CharT __c = __out.fill(); |
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for (; __n > 0; --__n) |
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{ |
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const typename _Traits::int_type __put = __out.rdbuf()->sputc(__c); |
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if (_Traits::eq_int_type(__put, _Traits::eof())) |
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{ |
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__out.setstate(__ios_base::badbit); |
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break; |
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} |
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} |
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} |
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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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__ostream_insert(basic_ostream<_CharT, _Traits>& __out, |
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const _CharT* __s, streamsize __n) |
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{ |
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typedef basic_ostream<_CharT, _Traits> __ostream_type; |
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typedef typename __ostream_type::ios_base __ios_base; |
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|
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typename __ostream_type::sentry __cerb(__out); |
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if (__cerb) |
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{ |
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__try |
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{ |
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const streamsize __w = __out.width(); |
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if (__w > __n) |
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{ |
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const bool __left = ((__out.flags() |
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& __ios_base::adjustfield) |
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== __ios_base::left); |
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if (!__left) |
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__ostream_fill(__out, __w - __n); |
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if (__out.good()) |
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__ostream_write(__out, __s, __n); |
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if (__left && __out.good()) |
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__ostream_fill(__out, __w - __n); |
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} |
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else |
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__ostream_write(__out, __s, __n); |
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__out.width(0); |
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} |
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__catch(__cxxabiv1::__forced_unwind&) |
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{ |
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__out._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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{ __out._M_setstate(__ios_base::badbit); } |
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} |
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return __out; |
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} |
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|
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// Inhibit implicit instantiations for required instantiations, |
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// which are defined via explicit instantiations elsewhere. |
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#if _GLIBCXX_EXTERN_TEMPLATE |
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extern template ostream& __ostream_insert(ostream&, const char*, streamsize); |
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|
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#ifdef _GLIBCXX_USE_WCHAR_T |
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extern template wostream& __ostream_insert(wostream&, const wchar_t*, |
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streamsize); |
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#endif |
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#endif |
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|
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_GLIBCXX_END_NAMESPACE_VERSION |
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} // namespace std |
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|
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#endif /* _OSTREAM_INSERT_H */ |
