diff options
Diffstat (limited to 'libstdc++-v3/src/streambuf.cc')
| -rw-r--r-- | libstdc++-v3/src/streambuf.cc | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/libstdc++-v3/src/streambuf.cc b/libstdc++-v3/src/streambuf.cc new file mode 100644 index 00000000000..2f9640950e0 --- /dev/null +++ b/libstdc++-v3/src/streambuf.cc @@ -0,0 +1,103 @@ +// 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 |