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285 lines
8.8 KiB
285 lines
8.8 KiB
5 years ago
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/***************************************************************************
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*
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* ostream.cc - Definitions for the Standard Library ostream classes
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*
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* $Id: ostream.cc 172106 2011-11-02 17:04:12Z statham $
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*
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***************************************************************************
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*
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* Copyright (c) 1994-2001 Rogue Wave Software, Inc. All Rights Reserved.
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*
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* This computer software is owned by Rogue Wave Software, Inc. and is
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* protected by U.S. copyright laws and other laws and by international
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* treaties. This computer software is furnished by Rogue Wave Software,
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* Inc. pursuant to a written license agreement and may be used, copied,
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* transmitted, and stored only in accordance with the terms of such
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* license and with the inclusion of the above copyright notice. This
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* computer software or any other copies thereof may not be provided or
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* otherwise made available to any other person.
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*
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* U.S. Government Restricted Rights. This computer software is provided
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* with Restricted Rights. Use, duplication, or disclosure by the
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* Government is subject to restrictions as set forth in subparagraph (c)
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* (1) (ii) of The Rights in Technical Data and Computer Software clause
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* at DFARS 252.227-7013 or subparagraphs (c) (1) and (2) of the
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* Commercial Computer Software--Restricted Rights at 48 CFR 52.227-19,
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* as applicable. Manufacturer is Rogue Wave Software, Inc., 5500
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* Flatiron Parkway, Boulder, Colorado 80301 USA.
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*
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**************************************************************************/
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_RWSTD_NAMESPACE_BEGIN (__rw)
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template <class _CharT, class _Traits, class _NativeType>
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_STD::basic_ostream<_CharT, _Traits>&
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__rw_insert (_STD::basic_ostream<_CharT, _Traits> &__strm,
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_NativeType __val)
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{
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_STD::ios_base::iostate __err = _STD::ios_base::goodbit;
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_TYPENAME _STD::basic_ostream<_CharT, _Traits>::sentry __opfx (__strm);
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_TRY {
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if (__opfx) {
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typedef _STD::ostreambuf_iterator<_CharT, _Traits> _Iter;
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typedef _STD::num_put<_CharT, _Iter> _NumPut;
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if (_USE_FACET (_NumPut, __strm.getloc ())
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.put (_Iter(__strm), __strm,
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__strm.fill (), __val).failed ())
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__err = _STD::ios_base::badbit;
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__strm.width (0);
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}
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}
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_CATCH (...) {
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if (__strm.setstate (_STD::ios_base::badbit, 0))
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_RETHROW;
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}
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if (__err)
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__strm.setstate (__err);
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return __strm;
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}
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// generic case (e.g., basic_ostream<wchar_t>, wchar_t*)
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template <class _CharT, class _Traits>
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inline _STD::streamsize
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__rw_sputn (_STD::basic_ostream<_CharT, _Traits> &__strm,
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const _CharT*__s, _STD::streamsize __len)
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{
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return __strm.rdbuf ()->sputn (__s, __len);
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}
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#ifndef _RWSTD_NO_FUNC_PARTIAL_SPEC
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// specialized for char* (e.g., basic_ostream<wchar_t>, char*)
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template <class _CharT, class _Traits>
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inline _STD::streamsize
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__rw_sputn (_STD::basic_ostream<_CharT, _Traits> &__strm,
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const char *__s, _STD::streamsize __len)
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{
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_RWSTD_ASSERT (!__len || __len > 0 && 0 != __s);
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const _STD::ctype<_CharT>& __ctp =
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_USE_FACET (_STD::ctype<_CharT>, __strm.getloc ());
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for (_STD::streamsize __i = 0; __i < __len; ++__i) {
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_TYPENAME _STD::basic_ostream<_CharT, _Traits>::int_type __n =
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__strm.rdbuf ()->sputc (__ctp.widen (__s [__i]));
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if (_Traits::eq_int_type (__n, _Traits::eof ()))
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return __i;
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}
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return __len;
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}
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// specialized for basic_ostream<char> and char*
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template <class _Traits>
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inline _STD::streamsize
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__rw_sputn (_STD::basic_ostream<char, _Traits> &__strm,
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const char*__s, _STD::streamsize __len)
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{
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return __strm.rdbuf ()->sputn (__s, __len);
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}
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#else // if defined (_RWSTD_NO_FUNC_PARTIAL_SPEC)
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// specialized for basic_ostream<[w]char[_t], char_traits<[w]char[_t]> >
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// and char*; any other specialization (e.g., user-defined traits) will be
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// generated from the primary template
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_RWSTD_SPECIALIZED_FUNCTION
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inline _STD::streamsize
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__rw_sputn (_STD::basic_ostream<char, _STD::char_traits<char> > &__strm,
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const char*__s, _STD::streamsize __len)
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{
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return __strm.rdbuf ()->sputn (__s, __len);
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}
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inline _STD::streamsize
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__rw_sputn (_STD::basic_ostream<wchar_t, _STD::char_traits<wchar_t> > &__strm,
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const char*__s, _STD::streamsize __len)
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{
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_RWSTD_ASSERT (!__len || __len > 0 && 0 != __s);
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const _STD::ctype<wchar_t>& __ctp =
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_USE_FACET (_STD::ctype<wchar_t>, __strm.getloc ());
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for (_STD::streamsize __i = 0; __i < __len; ++__i) {
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_STD::basic_ostream<wchar_t, _STD::char_traits<wchar_t> >::int_type __n
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= __strm.rdbuf ()->sputc (__ctp.widen (__s [__i]));
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if (_STD::char_traits<wchar_t>::eq_int_type (__n,
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_STD::char_traits<wchar_t>::eof ()))
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return __i;
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}
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return __len;
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}
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#endif // _RWSTD_NO_FUNC_PARTIAL_SPEC
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template<class _CharT, class _Traits, class _StringT>
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_STD::basic_ostream<_CharT, _Traits>&
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__rw_insert (_STD::basic_ostream<_CharT, _Traits> &__strm,
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_StringT *__s,
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_STD::streamsize __len,
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_STD::streamsize __width)
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{
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_RWSTD_ASSERT (0 != __strm.rdbuf ());
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_RWSTD_ASSERT (0 != __s);
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_STD::ios_base::iostate __err = _STD::ios_base::goodbit;
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_TRY {
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_TYPENAME _STD::basic_ostream<_CharT, _Traits>::sentry __opfx (__strm);
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if (__opfx) {
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// compute the number of fill chars to pad with
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// according to the rules described in 22.2.2.2.2, p19
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const _STD::streamsize __pad = __width - __len;
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const int __padbits = _STD::ios_base::adjustfield & __strm.flags ();
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// output left padding (output is right-aligned by default)
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if ( _STD::ios_base::left != __padbits
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&& __pad != __strm._C_pad (__pad))
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__err = _STD::ios_base::badbit;
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// write out (not necessarily null-terminated) string
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if ( _STD::ios_base::goodbit == __err
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&& __len && __len != __rw_sputn (__strm, __s, __len))
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__err = _STD::ios_base::badbit;
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// output right padding (output is left-aligned)
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if ( _STD::ios_base::goodbit == __err
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&& _STD::ios_base::left == __padbits
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&& __pad != __strm._C_pad (__pad))
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__err = _STD::ios_base::badbit;
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}
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}
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_CATCH (...) {
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if (__strm.setstate (_STD::ios_base::badbit, 0 /* nothrow */))
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_RETHROW;
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}
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if (__err)
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__strm.setstate (__err);
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return __strm;
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}
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_RWSTD_NAMESPACE_END // __rw
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_RWSTD_NAMESPACE_BEGIN (std)
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template<class _CharT, class _Traits>
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basic_ostream<_CharT, _Traits>&
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basic_ostream<_CharT, _Traits>::_C_opfx ()
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{
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if (this->tie ())
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this->tie ()->flush ();
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if (this->_C_is_sync ()) {
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if (_C_is_cout ()) // [w]cout
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fflush (stdout);
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else if (_C_is_std ()) // [w]cerr or [w]clog
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fflush (stderr);
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}
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// cast to ios_base::seekdir makes MSVC 6.0/sp3 happy
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if ( this->rdbuf ()
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&& this->rdbuf ()->_C_mode () & ios_base::app)
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this->rdbuf ()->pubseekoff (0, ios_base::seekdir (ios_base::end),
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ios_base::out);
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return *this;
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}
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template<class _CharT, class _Traits>
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basic_ostream<_CharT, _Traits>&
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basic_ostream<_CharT, _Traits>::
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operator<< (basic_streambuf<_CharT, _Traits>& __sb)
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{
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ios_base::iostate __err = ios_base::goodbit;
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bool __extracted = false; // successfully extracted chars from __sb?
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if (__sb._C_mode () & ios_base::in) {
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sentry __opfx (*this);
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_TRY {
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if (__opfx) {
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if (_Traits::eq_int_type (__sb.sgetc (), _Traits::eof ()))
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__err = ios_base::failbit;
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else {
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for ( ; ; ) {
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int_type __c = __sb.sbumpc ();
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if (_Traits::eq_int_type (__c, _Traits::eof ()))
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break;
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if (_Traits::eq_int_type (this->rdbuf ()->sputc (__c),
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_Traits::eof ())) {
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__err = ios_base::failbit;
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break;
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}
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__extracted = true;
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}
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}
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}
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}
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_CATCH (...) {
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if (this->setstate (ios_base::badbit, 0))
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_RETHROW;
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}
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}
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// 27.6.2.5.3.8
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if (!__extracted)
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__err = ios_base::failbit;
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if (__err)
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this->setstate (__err);
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return *this;
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}
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_RWSTD_NAMESPACE_END // std
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