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1 : : // Helpers for ostream inserters -*- C++ -*-
2 : :
3 : : // Copyright (C) 2007 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 : : /** @file ostream_insert.h
31 : : * This is an internal header file, included by other library headers.
32 : : * You should not attempt to use it directly.
33 : : */
34 : :
35 : : #ifndef _OSTREAM_INSERT_H
36 : : #define _OSTREAM_INSERT_H 1
37 : :
38 : : #pragma GCC system_header
39 : :
40 : : #include <iosfwd>
41 : : #include <cxxabi-forced.h>
42 : :
43 : : _GLIBCXX_BEGIN_NAMESPACE(std)
44 : :
45 : : template<typename _CharT, typename _Traits>
46 : : inline void
47 : : __ostream_write(basic_ostream<_CharT, _Traits>& __out,
48 : 0 : const _CharT* __s, streamsize __n)
49 : : {
50 : : typedef basic_ostream<_CharT, _Traits> __ostream_type;
51 : : typedef typename __ostream_type::ios_base __ios_base;
52 : :
53 : 0 : const streamsize __put = __out.rdbuf()->sputn(__s, __n);
54 [ # # ]: 0 : if (__put != __n)
55 : 0 : __out.setstate(__ios_base::badbit);
56 : 0 : }
57 : :
58 : : template<typename _CharT, typename _Traits>
59 : : inline void
60 : 0 : __ostream_fill(basic_ostream<_CharT, _Traits>& __out, streamsize __n)
61 : : {
62 : : typedef basic_ostream<_CharT, _Traits> __ostream_type;
63 : : typedef typename __ostream_type::ios_base __ios_base;
64 : :
65 : 0 : const _CharT __c = __out.fill();
66 [ # # ]: 0 : for (; __n > 0; --__n)
67 : : {
68 : 0 : const typename _Traits::int_type __put = __out.rdbuf()->sputc(__c);
69 [ # # ]: 0 : if (_Traits::eq_int_type(__put, _Traits::eof()))
70 : : {
71 : 0 : __out.setstate(__ios_base::badbit);
72 : 0 : break;
73 : : }
74 : : }
75 : 0 : }
76 : :
77 : : template<typename _CharT, typename _Traits>
78 : : basic_ostream<_CharT, _Traits>&
79 : : __ostream_insert(basic_ostream<_CharT, _Traits>& __out,
80 : 0 : const _CharT* __s, streamsize __n)
81 : : {
82 : : typedef basic_ostream<_CharT, _Traits> __ostream_type;
83 : : typedef typename __ostream_type::ios_base __ios_base;
84 : :
85 : 0 : typename __ostream_type::sentry __cerb(__out);
86 [ # # ]: 0 : if (__cerb)
87 : : {
88 : : try
89 : : {
90 : 0 : const streamsize __w = __out.width();
91 [ # # ]: 0 : if (__w > __n)
92 : : {
93 : : const bool __left = ((__out.flags()
94 : : & __ios_base::adjustfield)
95 : 0 : == __ios_base::left);
96 [ # # ]: 0 : if (!__left)
97 : 0 : __ostream_fill(__out, __w - __n);
98 [ # # ]: 0 : if (__out.good())
99 : 0 : __ostream_write(__out, __s, __n);
100 [ # # ][ # # ]: 0 : if (__left && __out.good())
[ # # ]
101 : 0 : __ostream_fill(__out, __w - __n);
102 : : }
103 : : else
104 : 0 : __ostream_write(__out, __s, __n);
105 : 0 : __out.width(0);
106 : : }
107 : 0 : catch(__cxxabiv1::__forced_unwind&)
108 : : {
109 : 0 : __out._M_setstate(__ios_base::badbit);
110 : 0 : __throw_exception_again;
111 : : }
112 : 0 : catch(...)
113 : 0 : { __out._M_setstate(__ios_base::badbit); }
114 : : }
115 : 0 : return __out;
116 : : }
117 : :
118 : : // Inhibit implicit instantiations for required instantiations,
119 : : // which are defined via explicit instantiations elsewhere.
120 : : // NB: This syntax is a GNU extension.
121 : : #if _GLIBCXX_EXTERN_TEMPLATE
122 : : extern template ostream& __ostream_insert(ostream&, const char*, streamsize);
123 : :
124 : : #ifdef _GLIBCXX_USE_WCHAR_T
125 : : extern template wostream& __ostream_insert(wostream&, const wchar_t*,
126 : : streamsize);
127 : : #endif
128 : : #endif
129 : :
130 : : _GLIBCXX_END_NAMESPACE
131 : :
132 : : #endif /* _OSTREAM_INSERT_H */
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