1// Stream buffer classes -*- C++ -*-
2
3// Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
4//
5// This file is part of the GNU ISO C++ Library.  This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 2, or (at your option)
9// any later version.
10
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14// GNU General Public License for more details.
15
16// You should have received a copy of the GNU General Public License along
17// with this library; see the file COPYING.  If not, write to the Free
18// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
19// USA.
20
21// As a special exception, you may use this file as part of a free software
22// library without restriction.  Specifically, if other files instantiate
23// templates or use macros or inline functions from this file, or you compile
24// this file and link it with other files to produce an executable, this
25// file does not by itself cause the resulting executable to be covered by
26// the GNU General Public License.  This exception does not however
27// invalidate any other reasons why the executable file might be covered by
28// the GNU General Public License.
29
30//
31// ISO C++ 14882: 27.5  Stream buffers
32//
33
34#include <streambuf>
35
36_GLIBCXX_BEGIN_NAMESPACE(std)
37
38  template<>
39    streamsize
40    __copy_streambufs_eof(basic_streambuf<char>* __sbin,
41			  basic_streambuf<char>* __sbout, bool& __ineof)
42    {
43      typedef basic_streambuf<char>::traits_type traits_type;
44      streamsize __ret = 0;
45      __ineof = true;
46      traits_type::int_type __c = __sbin->sgetc();
47      while (!traits_type::eq_int_type(__c, traits_type::eof()))
48	{
49	  const streamsize __n = __sbin->egptr() - __sbin->gptr();
50	  if (__n > 1)
51	    {
52	      const streamsize __wrote = __sbout->sputn(__sbin->gptr(), __n);
53	      __sbin->gbump(__wrote);
54	      __ret += __wrote;
55	      if (__wrote < __n)
56		{
57		  __ineof = false;
58		  break;
59		}
60	      __c = __sbin->underflow();
61	    }
62	  else
63	    {
64	      __c = __sbout->sputc(traits_type::to_char_type(__c));
65	      if (traits_type::eq_int_type(__c, traits_type::eof()))
66		{
67		  __ineof = false;
68		  break;
69		}
70	      ++__ret;
71	      __c = __sbin->snextc();
72	    }
73	}
74      return __ret;
75    }
76
77#ifdef _GLIBCXX_USE_WCHAR_T
78  template<>
79    streamsize
80    __copy_streambufs_eof(basic_streambuf<wchar_t>* __sbin,
81			  basic_streambuf<wchar_t>* __sbout, bool& __ineof)
82    {
83      typedef basic_streambuf<wchar_t>::traits_type traits_type;
84      streamsize __ret = 0;
85      __ineof = true;
86      traits_type::int_type __c = __sbin->sgetc();
87      while (!traits_type::eq_int_type(__c, traits_type::eof()))
88	{
89	  const streamsize __n = __sbin->egptr() - __sbin->gptr();
90	  if (__n > 1)
91	    {
92	      const streamsize __wrote = __sbout->sputn(__sbin->gptr(), __n);
93	      __sbin->gbump(__wrote);
94	      __ret += __wrote;
95	      if (__wrote < __n)
96		{
97		  __ineof = false;
98		  break;
99		}
100	      __c = __sbin->underflow();
101	    }
102	  else
103	    {
104	      __c = __sbout->sputc(traits_type::to_char_type(__c));
105	      if (traits_type::eq_int_type(__c, traits_type::eof()))
106		{
107		  __ineof = false;
108		  break;
109		}
110	      ++__ret;
111	      __c = __sbin->snextc();
112	    }
113	}
114      return __ret;
115    }
116#endif
117
118_GLIBCXX_END_NAMESPACE
119