| // Stream buffer classes -*- C++ -*- |
| |
| // Copyright (C) 2004 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 2, 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. |
| |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING. If not, write to the Free |
| // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
| // USA. |
| |
| // As a special exception, you may use this file as part of a free software |
| // library without restriction. Specifically, if other files instantiate |
| // templates or use macros or inline functions from this file, or you compile |
| // this file and link it with other files to produce an executable, this |
| // file does not by itself cause the resulting executable to be covered by |
| // the GNU General Public License. This exception does not however |
| // invalidate any other reasons why the executable file might be covered by |
| // the GNU General Public License. |
| |
| // |
| // ISO C++ 14882: 27.5 Stream buffers |
| // |
| |
| #include <streambuf> |
| |
| namespace std |
| { |
| template<> |
| streamsize |
| __copy_streambufs(basic_streambuf<char>* __sbin, |
| basic_streambuf<char>* __sbout) |
| { |
| typedef basic_streambuf<char>::traits_type traits_type; |
| streamsize __ret = 0; |
| traits_type::int_type __c = __sbin->sgetc(); |
| while (!traits_type::eq_int_type(__c, traits_type::eof())) |
| { |
| const size_t __n = __sbin->egptr() - __sbin->gptr(); |
| if (__n > 1) |
| { |
| const size_t __wrote = __sbout->sputn(__sbin->gptr(), __n); |
| __sbin->gbump(__wrote); |
| __ret += __wrote; |
| if (__wrote < __n) |
| break; |
| __c = __sbin->underflow(); |
| } |
| else |
| { |
| __c = __sbout->sputc(traits_type::to_char_type(__c)); |
| if (traits_type::eq_int_type(__c, traits_type::eof())) |
| break; |
| ++__ret; |
| __c = __sbin->snextc(); |
| } |
| } |
| return __ret; |
| } |
| |
| #ifdef _GLIBCXX_USE_WCHAR_T |
| template<> |
| streamsize |
| __copy_streambufs(basic_streambuf<wchar_t>* __sbin, |
| basic_streambuf<wchar_t>* __sbout) |
| { |
| typedef basic_streambuf<wchar_t>::traits_type traits_type; |
| streamsize __ret = 0; |
| traits_type::int_type __c = __sbin->sgetc(); |
| while (!traits_type::eq_int_type(__c, traits_type::eof())) |
| { |
| const size_t __n = __sbin->egptr() - __sbin->gptr(); |
| if (__n > 1) |
| { |
| const size_t __wrote = __sbout->sputn(__sbin->gptr(), __n); |
| __sbin->gbump(__wrote); |
| __ret += __wrote; |
| if (__wrote < __n) |
| break; |
| __c = __sbin->underflow(); |
| } |
| else |
| { |
| __c = __sbout->sputc(traits_type::to_char_type(__c)); |
| if (traits_type::eq_int_type(__c, traits_type::eof())) |
| break; |
| ++__ret; |
| __c = __sbin->snextc(); |
| } |
| } |
| return __ret; |
| } |
| #endif |
| } // namespace std |