mirror of git://gcc.gnu.org/git/gcc.git
130 lines
3.9 KiB
C++
130 lines
3.9 KiB
C++
// Helpers for ostream inserters -*- C++ -*-
|
|
|
|
// Copyright (C) 2007-2017 Free Software Foundation, Inc.
|
|
//
|
|
// This file is part of the GNU ISO C++ Library. This library is free
|
|
// software; you can redistribute it and/or modify it under the
|
|
// terms of the GNU General Public License as published by the
|
|
// Free Software Foundation; either version 3, or (at your option)
|
|
// any later version.
|
|
|
|
// This library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
|
|
// Under Section 7 of GPL version 3, you are granted additional
|
|
// permissions described in the GCC Runtime Library Exception, version
|
|
// 3.1, as published by the Free Software Foundation.
|
|
|
|
// You should have received a copy of the GNU General Public License and
|
|
// a copy of the GCC Runtime Library Exception along with this program;
|
|
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
// <http://www.gnu.org/licenses/>.
|
|
|
|
/** @file bits/ostream_insert.h
|
|
* This is an internal header file, included by other library headers.
|
|
* Do not attempt to use it directly. @headername{ostream}
|
|
*/
|
|
|
|
#ifndef _OSTREAM_INSERT_H
|
|
#define _OSTREAM_INSERT_H 1
|
|
|
|
#pragma GCC system_header
|
|
|
|
#include <iosfwd>
|
|
#include <bits/cxxabi_forced.h>
|
|
|
|
namespace std _GLIBCXX_VISIBILITY(default)
|
|
{
|
|
_GLIBCXX_BEGIN_NAMESPACE_VERSION
|
|
|
|
template<typename _CharT, typename _Traits>
|
|
inline void
|
|
__ostream_write(basic_ostream<_CharT, _Traits>& __out,
|
|
const _CharT* __s, streamsize __n)
|
|
{
|
|
typedef basic_ostream<_CharT, _Traits> __ostream_type;
|
|
typedef typename __ostream_type::ios_base __ios_base;
|
|
|
|
const streamsize __put = __out.rdbuf()->sputn(__s, __n);
|
|
if (__put != __n)
|
|
__out.setstate(__ios_base::badbit);
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits>
|
|
inline void
|
|
__ostream_fill(basic_ostream<_CharT, _Traits>& __out, streamsize __n)
|
|
{
|
|
typedef basic_ostream<_CharT, _Traits> __ostream_type;
|
|
typedef typename __ostream_type::ios_base __ios_base;
|
|
|
|
const _CharT __c = __out.fill();
|
|
for (; __n > 0; --__n)
|
|
{
|
|
const typename _Traits::int_type __put = __out.rdbuf()->sputc(__c);
|
|
if (_Traits::eq_int_type(__put, _Traits::eof()))
|
|
{
|
|
__out.setstate(__ios_base::badbit);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
template<typename _CharT, typename _Traits>
|
|
basic_ostream<_CharT, _Traits>&
|
|
__ostream_insert(basic_ostream<_CharT, _Traits>& __out,
|
|
const _CharT* __s, streamsize __n)
|
|
{
|
|
typedef basic_ostream<_CharT, _Traits> __ostream_type;
|
|
typedef typename __ostream_type::ios_base __ios_base;
|
|
|
|
typename __ostream_type::sentry __cerb(__out);
|
|
if (__cerb)
|
|
{
|
|
__try
|
|
{
|
|
const streamsize __w = __out.width();
|
|
if (__w > __n)
|
|
{
|
|
const bool __left = ((__out.flags()
|
|
& __ios_base::adjustfield)
|
|
== __ios_base::left);
|
|
if (!__left)
|
|
__ostream_fill(__out, __w - __n);
|
|
if (__out.good())
|
|
__ostream_write(__out, __s, __n);
|
|
if (__left && __out.good())
|
|
__ostream_fill(__out, __w - __n);
|
|
}
|
|
else
|
|
__ostream_write(__out, __s, __n);
|
|
__out.width(0);
|
|
}
|
|
__catch(__cxxabiv1::__forced_unwind&)
|
|
{
|
|
__out._M_setstate(__ios_base::badbit);
|
|
__throw_exception_again;
|
|
}
|
|
__catch(...)
|
|
{ __out._M_setstate(__ios_base::badbit); }
|
|
}
|
|
return __out;
|
|
}
|
|
|
|
// Inhibit implicit instantiations for required instantiations,
|
|
// which are defined via explicit instantiations elsewhere.
|
|
#if _GLIBCXX_EXTERN_TEMPLATE
|
|
extern template ostream& __ostream_insert(ostream&, const char*, streamsize);
|
|
|
|
#ifdef _GLIBCXX_USE_WCHAR_T
|
|
extern template wostream& __ostream_insert(wostream&, const wchar_t*,
|
|
streamsize);
|
|
#endif
|
|
#endif
|
|
|
|
_GLIBCXX_END_NAMESPACE_VERSION
|
|
} // namespace std
|
|
|
|
#endif /* _OSTREAM_INSERT_H */
|