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
_GLIBCXX_BEGIN_NAMESPACE(std)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
__copy_streambufs_eof(basic_streambuf<wchar_t> * __sbin,basic_streambuf<wchar_t> * __sbout,bool & __ineof)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