1*38fd1498Szrj // Stream buffer classes -*- C++ -*- 2*38fd1498Szrj 3*38fd1498Szrj // Copyright (C) 2004-2018 Free Software Foundation, Inc. 4*38fd1498Szrj // 5*38fd1498Szrj // This file is part of the GNU ISO C++ Library. This library is free 6*38fd1498Szrj // software; you can redistribute it and/or modify it under the 7*38fd1498Szrj // terms of the GNU General Public License as published by the 8*38fd1498Szrj // Free Software Foundation; either version 3, or (at your option) 9*38fd1498Szrj // any later version. 10*38fd1498Szrj 11*38fd1498Szrj // This library is distributed in the hope that it will be useful, 12*38fd1498Szrj // but WITHOUT ANY WARRANTY; without even the implied warranty of 13*38fd1498Szrj // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14*38fd1498Szrj // GNU General Public License for more details. 15*38fd1498Szrj 16*38fd1498Szrj // Under Section 7 of GPL version 3, you are granted additional 17*38fd1498Szrj // permissions described in the GCC Runtime Library Exception, version 18*38fd1498Szrj // 3.1, as published by the Free Software Foundation. 19*38fd1498Szrj 20*38fd1498Szrj // You should have received a copy of the GNU General Public License and 21*38fd1498Szrj // a copy of the GCC Runtime Library Exception along with this program; 22*38fd1498Szrj // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23*38fd1498Szrj // <http://www.gnu.org/licenses/>. 24*38fd1498Szrj 25*38fd1498Szrj // 26*38fd1498Szrj // ISO C++ 14882: 27.5 Stream buffers 27*38fd1498Szrj // 28*38fd1498Szrj 29*38fd1498Szrj #include <streambuf> 30*38fd1498Szrj 31*38fd1498Szrj namespace std _GLIBCXX_VISIBILITY(default) 32*38fd1498Szrj { 33*38fd1498Szrj _GLIBCXX_BEGIN_NAMESPACE_VERSION 34*38fd1498Szrj 35*38fd1498Szrj template<> 36*38fd1498Szrj streamsize __copy_streambufs_eof(basic_streambuf<char> * __sbin,basic_streambuf<char> * __sbout,bool & __ineof)37*38fd1498Szrj __copy_streambufs_eof(basic_streambuf<char>* __sbin, 38*38fd1498Szrj basic_streambuf<char>* __sbout, bool& __ineof) 39*38fd1498Szrj { 40*38fd1498Szrj typedef basic_streambuf<char>::traits_type traits_type; 41*38fd1498Szrj streamsize __ret = 0; 42*38fd1498Szrj __ineof = true; 43*38fd1498Szrj traits_type::int_type __c = __sbin->sgetc(); 44*38fd1498Szrj while (!traits_type::eq_int_type(__c, traits_type::eof())) 45*38fd1498Szrj { 46*38fd1498Szrj const streamsize __n = __sbin->egptr() - __sbin->gptr(); 47*38fd1498Szrj if (__n > 1) 48*38fd1498Szrj { 49*38fd1498Szrj const streamsize __wrote = __sbout->sputn(__sbin->gptr(), __n); 50*38fd1498Szrj __sbin->__safe_gbump(__wrote); 51*38fd1498Szrj __ret += __wrote; 52*38fd1498Szrj if (__wrote < __n) 53*38fd1498Szrj { 54*38fd1498Szrj __ineof = false; 55*38fd1498Szrj break; 56*38fd1498Szrj } 57*38fd1498Szrj __c = __sbin->underflow(); 58*38fd1498Szrj } 59*38fd1498Szrj else 60*38fd1498Szrj { 61*38fd1498Szrj __c = __sbout->sputc(traits_type::to_char_type(__c)); 62*38fd1498Szrj if (traits_type::eq_int_type(__c, traits_type::eof())) 63*38fd1498Szrj { 64*38fd1498Szrj __ineof = false; 65*38fd1498Szrj break; 66*38fd1498Szrj } 67*38fd1498Szrj ++__ret; 68*38fd1498Szrj __c = __sbin->snextc(); 69*38fd1498Szrj } 70*38fd1498Szrj } 71*38fd1498Szrj return __ret; 72*38fd1498Szrj } 73*38fd1498Szrj 74*38fd1498Szrj #ifdef _GLIBCXX_USE_WCHAR_T 75*38fd1498Szrj template<> 76*38fd1498Szrj streamsize __copy_streambufs_eof(basic_streambuf<wchar_t> * __sbin,basic_streambuf<wchar_t> * __sbout,bool & __ineof)77*38fd1498Szrj __copy_streambufs_eof(basic_streambuf<wchar_t>* __sbin, 78*38fd1498Szrj basic_streambuf<wchar_t>* __sbout, bool& __ineof) 79*38fd1498Szrj { 80*38fd1498Szrj typedef basic_streambuf<wchar_t>::traits_type traits_type; 81*38fd1498Szrj streamsize __ret = 0; 82*38fd1498Szrj __ineof = true; 83*38fd1498Szrj traits_type::int_type __c = __sbin->sgetc(); 84*38fd1498Szrj while (!traits_type::eq_int_type(__c, traits_type::eof())) 85*38fd1498Szrj { 86*38fd1498Szrj const streamsize __n = __sbin->egptr() - __sbin->gptr(); 87*38fd1498Szrj if (__n > 1) 88*38fd1498Szrj { 89*38fd1498Szrj const streamsize __wrote = __sbout->sputn(__sbin->gptr(), __n); 90*38fd1498Szrj __sbin->__safe_gbump(__wrote); 91*38fd1498Szrj __ret += __wrote; 92*38fd1498Szrj if (__wrote < __n) 93*38fd1498Szrj { 94*38fd1498Szrj __ineof = false; 95*38fd1498Szrj break; 96*38fd1498Szrj } 97*38fd1498Szrj __c = __sbin->underflow(); 98*38fd1498Szrj } 99*38fd1498Szrj else 100*38fd1498Szrj { 101*38fd1498Szrj __c = __sbout->sputc(traits_type::to_char_type(__c)); 102*38fd1498Szrj if (traits_type::eq_int_type(__c, traits_type::eof())) 103*38fd1498Szrj { 104*38fd1498Szrj __ineof = false; 105*38fd1498Szrj break; 106*38fd1498Szrj } 107*38fd1498Szrj ++__ret; 108*38fd1498Szrj __c = __sbin->snextc(); 109*38fd1498Szrj } 110*38fd1498Szrj } 111*38fd1498Szrj return __ret; 112*38fd1498Szrj } 113*38fd1498Szrj #endif 114*38fd1498Szrj 115*38fd1498Szrj _GLIBCXX_END_NAMESPACE_VERSION 116*38fd1498Szrj } // namespace 117