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1 | // Helpers for ostream inserters -*- C++ -*- |
2 | ||
8d9254fc | 3 | // Copyright (C) 2007-2020 Free Software Foundation, Inc. |
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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) |
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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} |
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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> |
11202768 | 37 | |
12ffa228 BK |
38 | namespace std _GLIBCXX_VISIBILITY(default) |
39 | { | |
40 | _GLIBCXX_BEGIN_NAMESPACE_VERSION | |
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41 | |
42 | template<typename _CharT, typename _Traits> | |
43 | inline void | |
44 | __ostream_write(basic_ostream<_CharT, _Traits>& __out, | |
45 | const _CharT* __s, streamsize __n) | |
46 | { | |
47 | typedef basic_ostream<_CharT, _Traits> __ostream_type; | |
48 | typedef typename __ostream_type::ios_base __ios_base; | |
49 | ||
50 | const streamsize __put = __out.rdbuf()->sputn(__s, __n); | |
51 | if (__put != __n) | |
52 | __out.setstate(__ios_base::badbit); | |
53 | } | |
54 | ||
55 | template<typename _CharT, typename _Traits> | |
56 | inline void | |
57 | __ostream_fill(basic_ostream<_CharT, _Traits>& __out, streamsize __n) | |
58 | { | |
59 | typedef basic_ostream<_CharT, _Traits> __ostream_type; | |
60 | typedef typename __ostream_type::ios_base __ios_base; | |
61 | ||
62 | const _CharT __c = __out.fill(); | |
63 | for (; __n > 0; --__n) | |
64 | { | |
65 | const typename _Traits::int_type __put = __out.rdbuf()->sputc(__c); | |
66 | if (_Traits::eq_int_type(__put, _Traits::eof())) | |
67 | { | |
68 | __out.setstate(__ios_base::badbit); | |
69 | break; | |
70 | } | |
71 | } | |
72 | } | |
73 | ||
74 | template<typename _CharT, typename _Traits> | |
75 | basic_ostream<_CharT, _Traits>& | |
76 | __ostream_insert(basic_ostream<_CharT, _Traits>& __out, | |
77 | const _CharT* __s, streamsize __n) | |
78 | { | |
79 | typedef basic_ostream<_CharT, _Traits> __ostream_type; | |
80 | typedef typename __ostream_type::ios_base __ios_base; | |
81 | ||
82 | typename __ostream_type::sentry __cerb(__out); | |
880b527f | 83 | if (__cerb) |
11202768 | 84 | { |
bc2631e0 | 85 | __try |
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86 | { |
87 | const streamsize __w = __out.width(); | |
88 | if (__w > __n) | |
89 | { | |
90 | const bool __left = ((__out.flags() | |
91 | & __ios_base::adjustfield) | |
92 | == __ios_base::left); | |
93 | if (!__left) | |
94 | __ostream_fill(__out, __w - __n); | |
95 | if (__out.good()) | |
96 | __ostream_write(__out, __s, __n); | |
97 | if (__left && __out.good()) | |
98 | __ostream_fill(__out, __w - __n); | |
99 | } | |
100 | else | |
101 | __ostream_write(__out, __s, __n); | |
102 | __out.width(0); | |
103 | } | |
bc2631e0 | 104 | __catch(__cxxabiv1::__forced_unwind&) |
d05f74f1 JM |
105 | { |
106 | __out._M_setstate(__ios_base::badbit); | |
107 | __throw_exception_again; | |
108 | } | |
bc2631e0 | 109 | __catch(...) |
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110 | { __out._M_setstate(__ios_base::badbit); } |
111 | } | |
112 | return __out; | |
113 | } | |
114 | ||
84b31797 PC |
115 | // Inhibit implicit instantiations for required instantiations, |
116 | // which are defined via explicit instantiations elsewhere. | |
84b31797 PC |
117 | #if _GLIBCXX_EXTERN_TEMPLATE |
118 | extern template ostream& __ostream_insert(ostream&, const char*, streamsize); | |
119 | ||
120 | #ifdef _GLIBCXX_USE_WCHAR_T | |
121 | extern template wostream& __ostream_insert(wostream&, const wchar_t*, | |
122 | streamsize); | |
123 | #endif | |
124 | #endif | |
125 | ||
12ffa228 | 126 | _GLIBCXX_END_NAMESPACE_VERSION |
ed4f96af | 127 | } // namespace std |
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128 | |
129 | #endif /* _OSTREAM_INSERT_H */ |