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11202768 PC |
1 | // Helpers for ostream inserters -*- C++ -*- |
2 | ||
a945c346 | 3 | // Copyright (C) 2007-2024 Free Software Foundation, Inc. |
11202768 PC |
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 | |
748086b7 | 8 | // Free Software Foundation; either version 3, or (at your option) |
11202768 PC |
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 | ||
748086b7 JJ |
16 | // Under Section 7 of GPL version 3, you are granted additional |
17 | // permissions described in the GCC Runtime Library Exception, version | |
18 | // 3.1, as published by the Free Software Foundation. | |
19 | ||
20 | // You should have received a copy of the GNU General Public License and | |
21 | // a copy of the GCC Runtime Library Exception along with this program; | |
22 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
23 | // <http://www.gnu.org/licenses/>. | |
11202768 | 24 | |
f910786b | 25 | /** @file bits/ostream_insert.h |
11202768 | 26 | * This is an internal header file, included by other library headers. |
f910786b | 27 | * Do not attempt to use it directly. @headername{ostream} |
11202768 PC |
28 | */ |
29 | ||
30 | #ifndef _OSTREAM_INSERT_H | |
31 | #define _OSTREAM_INSERT_H 1 | |
32 | ||
33 | #pragma GCC system_header | |
34 | ||
35 | #include <iosfwd> | |
7c3e9502 | 36 | #include <bits/cxxabi_forced.h> |
47cca028 | 37 | #include <bits/exception_defines.h> |
11202768 | 38 | |
d3a7302e JM |
39 | #pragma GCC diagnostic push |
40 | #pragma GCC diagnostic ignored "-Wc++11-extensions" // extern template | |
41 | ||
12ffa228 BK |
42 | namespace std _GLIBCXX_VISIBILITY(default) |
43 | { | |
44 | _GLIBCXX_BEGIN_NAMESPACE_VERSION | |
11202768 | 45 | |
e6149254 JW |
46 | /// @cond undocumented |
47 | ||
11202768 PC |
48 | template<typename _CharT, typename _Traits> |
49 | inline void | |
50 | __ostream_write(basic_ostream<_CharT, _Traits>& __out, | |
51 | const _CharT* __s, streamsize __n) | |
52 | { | |
53 | typedef basic_ostream<_CharT, _Traits> __ostream_type; | |
54 | typedef typename __ostream_type::ios_base __ios_base; | |
55 | ||
56 | const streamsize __put = __out.rdbuf()->sputn(__s, __n); | |
57 | if (__put != __n) | |
58 | __out.setstate(__ios_base::badbit); | |
59 | } | |
60 | ||
61 | template<typename _CharT, typename _Traits> | |
62 | inline void | |
63 | __ostream_fill(basic_ostream<_CharT, _Traits>& __out, streamsize __n) | |
64 | { | |
65 | typedef basic_ostream<_CharT, _Traits> __ostream_type; | |
66 | typedef typename __ostream_type::ios_base __ios_base; | |
67 | ||
68 | const _CharT __c = __out.fill(); | |
69 | for (; __n > 0; --__n) | |
70 | { | |
71 | const typename _Traits::int_type __put = __out.rdbuf()->sputc(__c); | |
72 | if (_Traits::eq_int_type(__put, _Traits::eof())) | |
73 | { | |
74 | __out.setstate(__ios_base::badbit); | |
75 | break; | |
76 | } | |
77 | } | |
78 | } | |
79 | ||
80 | template<typename _CharT, typename _Traits> | |
81 | basic_ostream<_CharT, _Traits>& | |
82 | __ostream_insert(basic_ostream<_CharT, _Traits>& __out, | |
83 | const _CharT* __s, streamsize __n) | |
84 | { | |
85 | typedef basic_ostream<_CharT, _Traits> __ostream_type; | |
86 | typedef typename __ostream_type::ios_base __ios_base; | |
87 | ||
88 | typename __ostream_type::sentry __cerb(__out); | |
880b527f | 89 | if (__cerb) |
11202768 | 90 | { |
bc2631e0 | 91 | __try |
11202768 PC |
92 | { |
93 | const streamsize __w = __out.width(); | |
94 | if (__w > __n) | |
95 | { | |
96 | const bool __left = ((__out.flags() | |
97 | & __ios_base::adjustfield) | |
98 | == __ios_base::left); | |
99 | if (!__left) | |
100 | __ostream_fill(__out, __w - __n); | |
101 | if (__out.good()) | |
102 | __ostream_write(__out, __s, __n); | |
103 | if (__left && __out.good()) | |
104 | __ostream_fill(__out, __w - __n); | |
105 | } | |
106 | else | |
107 | __ostream_write(__out, __s, __n); | |
108 | __out.width(0); | |
109 | } | |
bc2631e0 | 110 | __catch(__cxxabiv1::__forced_unwind&) |
d05f74f1 JM |
111 | { |
112 | __out._M_setstate(__ios_base::badbit); | |
113 | __throw_exception_again; | |
114 | } | |
bc2631e0 | 115 | __catch(...) |
11202768 PC |
116 | { __out._M_setstate(__ios_base::badbit); } |
117 | } | |
118 | return __out; | |
119 | } | |
120 | ||
84b31797 PC |
121 | // Inhibit implicit instantiations for required instantiations, |
122 | // which are defined via explicit instantiations elsewhere. | |
84b31797 PC |
123 | #if _GLIBCXX_EXTERN_TEMPLATE |
124 | extern template ostream& __ostream_insert(ostream&, const char*, streamsize); | |
125 | ||
126 | #ifdef _GLIBCXX_USE_WCHAR_T | |
127 | extern template wostream& __ostream_insert(wostream&, const wchar_t*, | |
128 | streamsize); | |
129 | #endif | |
130 | #endif | |
131 | ||
e6149254 JW |
132 | /// @endcond |
133 | ||
12ffa228 | 134 | _GLIBCXX_END_NAMESPACE_VERSION |
ed4f96af | 135 | } // namespace std |
11202768 | 136 | |
d3a7302e | 137 | #pragma GCC diagnostic pop |
11202768 | 138 | #endif /* _OSTREAM_INSERT_H */ |