1169691Skan// Helpers for ostream inserters -*- C++ -*- 2169691Skan 3169691Skan// Copyright (C) 2007 Free Software Foundation, Inc. 4169691Skan// 5169691Skan// This file is part of the GNU ISO C++ Library. This library is free 6169691Skan// software; you can redistribute it and/or modify it under the 7169691Skan// terms of the GNU General Public License as published by the 8169691Skan// Free Software Foundation; either version 2, or (at your option) 9169691Skan// any later version. 10169691Skan 11169691Skan// This library is distributed in the hope that it will be useful, 12169691Skan// but WITHOUT ANY WARRANTY; without even the implied warranty of 13169691Skan// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14169691Skan// GNU General Public License for more details. 15169691Skan 16169691Skan// You should have received a copy of the GNU General Public License along 17169691Skan// with this library; see the file COPYING. If not, write to the Free 18169691Skan// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 19169691Skan// USA. 20169691Skan 21169691Skan// As a special exception, you may use this file as part of a free software 22169691Skan// library without restriction. Specifically, if other files instantiate 23169691Skan// templates or use macros or inline functions from this file, or you compile 24169691Skan// this file and link it with other files to produce an executable, this 25169691Skan// file does not by itself cause the resulting executable to be covered by 26169691Skan// the GNU General Public License. This exception does not however 27169691Skan// invalidate any other reasons why the executable file might be covered by 28169691Skan// the GNU General Public License. 29169691Skan 30169691Skan/** @file ostream_insert.h 31169691Skan * This is an internal header file, included by other library headers. 32169691Skan * You should not attempt to use it directly. 33169691Skan */ 34169691Skan 35169691Skan#ifndef _OSTREAM_INSERT_H 36169691Skan#define _OSTREAM_INSERT_H 1 37169691Skan 38169691Skan#pragma GCC system_header 39169691Skan 40169691Skan#include <iosfwd> 41169691Skan 42169691Skan_GLIBCXX_BEGIN_NAMESPACE(std) 43169691Skan 44169691Skan template<typename _CharT, typename _Traits> 45169691Skan inline void 46169691Skan __ostream_write(basic_ostream<_CharT, _Traits>& __out, 47169691Skan const _CharT* __s, streamsize __n) 48169691Skan { 49169691Skan typedef basic_ostream<_CharT, _Traits> __ostream_type; 50169691Skan typedef typename __ostream_type::ios_base __ios_base; 51169691Skan 52169691Skan const streamsize __put = __out.rdbuf()->sputn(__s, __n); 53169691Skan if (__put != __n) 54169691Skan __out.setstate(__ios_base::badbit); 55169691Skan } 56169691Skan 57169691Skan template<typename _CharT, typename _Traits> 58169691Skan inline void 59169691Skan __ostream_fill(basic_ostream<_CharT, _Traits>& __out, streamsize __n) 60169691Skan { 61169691Skan typedef basic_ostream<_CharT, _Traits> __ostream_type; 62169691Skan typedef typename __ostream_type::ios_base __ios_base; 63169691Skan 64169691Skan const _CharT __c = __out.fill(); 65169691Skan for (; __n > 0; --__n) 66169691Skan { 67169691Skan const typename _Traits::int_type __put = __out.rdbuf()->sputc(__c); 68169691Skan if (_Traits::eq_int_type(__put, _Traits::eof())) 69169691Skan { 70169691Skan __out.setstate(__ios_base::badbit); 71169691Skan break; 72169691Skan } 73169691Skan } 74169691Skan } 75169691Skan 76169691Skan template<typename _CharT, typename _Traits> 77169691Skan basic_ostream<_CharT, _Traits>& 78169691Skan __ostream_insert(basic_ostream<_CharT, _Traits>& __out, 79169691Skan const _CharT* __s, streamsize __n) 80169691Skan { 81169691Skan typedef basic_ostream<_CharT, _Traits> __ostream_type; 82169691Skan typedef typename __ostream_type::ios_base __ios_base; 83169691Skan 84169691Skan typename __ostream_type::sentry __cerb(__out); 85169691Skan if (__cerb) 86169691Skan { 87169691Skan try 88169691Skan { 89169691Skan const streamsize __w = __out.width(); 90169691Skan if (__w > __n) 91169691Skan { 92169691Skan const bool __left = ((__out.flags() 93169691Skan & __ios_base::adjustfield) 94169691Skan == __ios_base::left); 95169691Skan if (!__left) 96169691Skan __ostream_fill(__out, __w - __n); 97169691Skan if (__out.good()) 98169691Skan __ostream_write(__out, __s, __n); 99169691Skan if (__left && __out.good()) 100169691Skan __ostream_fill(__out, __w - __n); 101169691Skan } 102169691Skan else 103169691Skan __ostream_write(__out, __s, __n); 104169691Skan __out.width(0); 105169691Skan } 106169691Skan catch(...) 107169691Skan { __out._M_setstate(__ios_base::badbit); } 108169691Skan } 109169691Skan return __out; 110169691Skan } 111169691Skan 112171827Skan // Inhibit implicit instantiations for required instantiations, 113171827Skan // which are defined via explicit instantiations elsewhere. 114171827Skan // NB: This syntax is a GNU extension. 115171827Skan#if _GLIBCXX_EXTERN_TEMPLATE 116171827Skan extern template ostream& __ostream_insert(ostream&, const char*, streamsize); 117171827Skan 118171827Skan#ifdef _GLIBCXX_USE_WCHAR_T 119171827Skan extern template wostream& __ostream_insert(wostream&, const wchar_t*, 120171827Skan streamsize); 121171827Skan#endif 122171827Skan#endif 123171827Skan 124169691Skan_GLIBCXX_END_NAMESPACE 125169691Skan 126169691Skan#endif /* _OSTREAM_INSERT_H */ 127