Edit File: ostream_insert.h
// Helpers for ostream inserters -*- C++ -*- // Copyright (C) 2007-2018 Free Software Foundation, Inc. // // 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 bits/ostream_insert.h * This is an internal header file, included by other library headers. * Do not attempt to use it directly. @headername{ostream} */ #ifndef _OSTREAM_INSERT_H #define _OSTREAM_INSERT_H 1 #pragma GCC system_header #include <iosfwd> #include <bits/cxxabi_forced.h> namespace std _GLIBCXX_VISIBILITY(default) { _GLIBCXX_BEGIN_NAMESPACE_VERSION template<typename _CharT, typename _Traits> inline void __ostream_write(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s, streamsize __n) { typedef basic_ostream<_CharT, _Traits> __ostream_type; typedef typename __ostream_type::ios_base __ios_base; const streamsize __put = __out.rdbuf()->sputn(__s, __n); if (__put != __n) __out.setstate(__ios_base::badbit); } template<typename _CharT, typename _Traits> inline void __ostream_fill(basic_ostream<_CharT, _Traits>& __out, streamsize __n) { typedef basic_ostream<_CharT, _Traits> __ostream_type; typedef typename __ostream_type::ios_base __ios_base; const _CharT __c = __out.fill(); for (; __n > 0; --__n) { const typename _Traits::int_type __put = __out.rdbuf()->sputc(__c); if (_Traits::eq_int_type(__put, _Traits::eof())) { __out.setstate(__ios_base::badbit); break; } } } template<typename _CharT, typename _Traits> basic_ostream<_CharT, _Traits>& __ostream_insert(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s, streamsize __n) { typedef basic_ostream<_CharT, _Traits> __ostream_type; typedef typename __ostream_type::ios_base __ios_base; typename __ostream_type::sentry __cerb(__out); if (__cerb) { __try { const streamsize __w = __out.width(); if (__w > __n) { const bool __left = ((__out.flags() & __ios_base::adjustfield) == __ios_base::left); if (!__left) __ostream_fill(__out, __w - __n); if (__out.good()) __ostream_write(__out, __s, __n); if (__left && __out.good()) __ostream_fill(__out, __w - __n); } else __ostream_write(__out, __s, __n); __out.width(0); } __catch(__cxxabiv1::__forced_unwind&) { __out._M_setstate(__ios_base::badbit); __throw_exception_again; } __catch(...) { __out._M_setstate(__ios_base::badbit); } } return __out; } // Inhibit implicit instantiations for required instantiations, // which are defined via explicit instantiations elsewhere. #if _GLIBCXX_EXTERN_TEMPLATE extern template ostream& __ostream_insert(ostream&, const char*, streamsize); #ifdef _GLIBCXX_USE_WCHAR_T extern template wostream& __ostream_insert(wostream&, const wchar_t*, streamsize); #endif #endif _GLIBCXX_END_NAMESPACE_VERSION } // namespace std #endif /* _OSTREAM_INSERT_H */
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