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Jose Caban
245
extern/stdcxx/4.2.1/include/ostream.cc
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245
extern/stdcxx/4.2.1/include/ostream.cc
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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 612563 2008-01-16 20:31:30Z sebor $
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*
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***************************************************************************
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*
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* Copyright 1994-2008 Rogue Wave Software, Inc.
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*
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**************************************************************************/
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_RWSTD_NAMESPACE (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>::flush ()
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{
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if (this->rdbuf ()) {
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// see LWG issue 581
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const sentry __opfx (*this);
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if (__opfx) {
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int __res = 0;
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_TRY {
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__res = this->rdbuf ()->pubsync ();
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}
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_CATCH (...) {
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this->setstate (ios_base::badbit | _RW::__rw_rethrow);
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}
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if (-1 == __res)
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this->setstate (ios_base::badbit);
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}
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}
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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>::seekp (pos_type __pos)
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{
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_RWSTD_ASSERT (0 != this->rdbuf ());
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if (!this->fail ()) {
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_RWSTD_MT_GUARD (this->_C_bufmutex ());
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pos_type __res = 0;
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_TRY {
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__res = this->rdbuf ()->pubseekpos (__pos, ios_base::out);
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}
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_CATCH (...) {
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this->setstate (ios_base::badbit | _RW::__rw_rethrow);
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}
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if (-1 == __res)
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this->setstate (ios_base::failbit); // lwg issue 129
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}
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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>::seekp (off_type __off, ios_base::seekdir __dir)
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{
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_RWSTD_ASSERT (0 != this->rdbuf ());
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if (!this->fail ()) {
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_RWSTD_MT_GUARD (this->_C_bufmutex ());
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off_type __res = 0;
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_TRY {
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__res = this->rdbuf()->pubseekoff (__off, __dir, ios_base::out);
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}
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_CATCH (...) {
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this->setstate (ios_base::badbit | _RW::__rw_rethrow);
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}
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if (-1 == __res)
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this->setstate (ios_base::failbit); // lwg issue 129
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}
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return *this;
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}
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template<class _CharT, class _Traits>
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_TYPENAME basic_ostream<_CharT, _Traits>::pos_type
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basic_ostream<_CharT, _Traits>::tellp ()
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{
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_RWSTD_ASSERT (0 != this->rdbuf ());
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if (!this->fail ()) {
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_RWSTD_MT_GUARD (this->_C_bufmutex ());
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_TRY {
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return this->rdbuf()->pubseekoff (0, ios_base::cur, ios_base::out);
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}
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_CATCH (...) {
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this->setstate (ios_base::badbit | _RW::__rw_rethrow);
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}
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}
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return pos_type (off_type (-1));
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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<char_type, traits_type> *__sb)
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{
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if (!__sb) {
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this->setstate (ios_base::badbit);
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return *this;
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}
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ios_base::iostate __err = ios_base::goodbit;
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streamsize __nget = 0; // number of extracted characters
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if (__sb->_C_mode () & ios_base::in) {
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const sentry __opfx (*this);
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_TRY {
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if (__opfx) {
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basic_streambuf<char_type, traits_type>* const __rdbuf =
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this->rdbuf ();
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for (const int_type __eof = traits_type::eof (); ; ++__nget) {
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// determine the amount of available space in our buffer
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// into which it is safe (i.e., w/o calling overridden
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// virtuals on the buffer object or risking exceptions)
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// to copy the contents of the source stream buffer
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const streamsize __navail =
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streamsize (__rdbuf->epptr () - __rdbuf->pptr ());
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if (__navail > 1) {
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// copy 2 or more characters directly into buffer
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const streamsize __n =
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__sb->sgetn (__rdbuf->pptr (), __navail);
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if (__n < 0) {
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__err = ios_base::failbit;
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break;
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}
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if (!__n)
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break;
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__rdbuf->pbump (__n);
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__nget += __n;
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}
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else {
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// if space for less than 2 characters is available
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// try to retrieve and insert a single character
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int_type __c = __sb->sgetc ();
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// 27.6.2.5.3, p7, bullet 1
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if (traits_type::eq_int_type (__eof, __c))
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break;
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__c = __rdbuf->sputc (traits_type::to_char_type(__c));
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if (traits_type::eq_int_type (__eof, __c)) {
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__err = ios_base::failbit;
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break;
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}
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// 27.6.2.5.3, p7, bullet 2: extract character
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// only if it has been successfully inserted
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__sb->snextc ();
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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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this->setstate (ios_base::badbit | _RW::__rw_rethrow);
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}
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}
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// 27.6.2.5.3.8
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if (!__nget)
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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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#ifdef _RWSTD_NO_UNDEFINED_TEMPLATES
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template <class _CharT, class _Traits>
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basic_ostream<_CharT, _Traits>::sentry::
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sentry (const sentry &__rhs)
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: _RW::__rw_guard (0),
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_C_strm (__rhs._C_strm)
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{
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_RWSTD_ASSERT (!"not callable");
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}
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template <class _CharT, class _Traits>
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void
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basic_ostream<_CharT, _Traits>::sentry::
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operator= (const sentry&)
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{
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_RWSTD_ASSERT (!"not callable");
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}
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#endif // _RWSTD_NO_UNDEFINED_TEMPLATES
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} // namespace std
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