// Stream buffer classes -*- C++ -*-
-// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
+// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
// Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
-// Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// USA.
// As a special exception, you may use this file as part of a free software
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
+/** @file streambuf.tcc
+ * This is an internal header file, included by other library headers.
+ * You should not attempt to use it directly.
+ */
+
//
// ISO C++ 14882: 27.5 Stream buffers
//
-#ifndef _CPP_BITS_STREAMBUF_TCC
-#define _CPP_BITS_STREAMBUF_TCC 1
+#ifndef _STREAMBUF_TCC
+#define _STREAMBUF_TCC 1
-namespace std
-{
- template<typename _CharT, typename _Traits>
- typename basic_streambuf<_CharT, _Traits>::int_type
- basic_streambuf<_CharT, _Traits>::
- sbumpc()
- {
- int_type __ret;
- if (_M_in_cur && _M_in_cur < _M_in_end)
- {
- char_type __c = *gptr();
- _M_in_cur_move(1);
- __ret = traits_type::to_int_type(__c);
- }
- else
- __ret = this->uflow();
- return __ret;
- }
+#pragma GCC system_header
- template<typename _CharT, typename _Traits>
- typename basic_streambuf<_CharT, _Traits>::int_type
- basic_streambuf<_CharT, _Traits>::
- sputbackc(char_type __c)
- {
- int_type __ret;
- bool __testpos = _M_in_cur && _M_in_beg < _M_in_cur;
- bool __testne = _M_in_cur && !traits_type::eq(__c, this->gptr()[-1]);
- if (!__testpos || __testne)
- __ret = pbackfail(traits_type::to_int_type(__c));
- else
- {
- _M_in_cur_move(-1);
- __ret = traits_type::to_int_type(*this->gptr());
- }
- return __ret;
- }
-
- template<typename _CharT, typename _Traits>
- typename basic_streambuf<_CharT, _Traits>::int_type
- basic_streambuf<_CharT, _Traits>::
- sungetc()
- {
- int_type __ret;
- if (_M_in_cur && _M_in_beg < _M_in_cur)
- {
- _M_in_cur_move(-1);
- __ret = traits_type::to_int_type(*_M_in_cur);
- }
- else
- __ret = this->pbackfail();
- return __ret;
- }
-
- // Don't test against _M_buf + _M_buf_size, because _M_buf reflects
- // allocated space, and on certain (rare but entirely legal)
- // situations, there will be no allocated space yet the internal
- // buffers will still be valid. (This happens if setp is used to set
- // the internal buffer to say some externally-allocated sequence.)
- template<typename _CharT, typename _Traits>
- typename basic_streambuf<_CharT, _Traits>::int_type
- basic_streambuf<_CharT, _Traits>::
- sputc(char_type __c)
- {
- int_type __ret;
- if (_M_out_buf_size())
- {
- *_M_out_cur = __c;
- _M_out_cur_move(1);
- __ret = traits_type::to_int_type(__c);
- }
- else
- __ret = this->overflow(traits_type::to_int_type(__c));
- return __ret;
- }
+_GLIBCXX_BEGIN_NAMESPACE(std)
template<typename _CharT, typename _Traits>
streamsize
streamsize __ret = 0;
while (__ret < __n)
{
- size_t __buf_len = _M_in_end - _M_in_cur;
- if (__buf_len > 0)
+ const streamsize __buf_len = this->egptr() - this->gptr();
+ if (__buf_len)
{
- size_t __remaining = __n - __ret;
- size_t __len = min(__buf_len, __remaining);
- traits_type::copy(__s, _M_in_cur, __len);
+ const streamsize __remaining = __n - __ret;
+ const streamsize __len = std::min(__buf_len, __remaining);
+ traits_type::copy(__s, this->gptr(), __len);
__ret += __len;
__s += __len;
- _M_in_cur_move(__len);
+ this->gbump(__len);
}
-
+
if (__ret < __n)
{
- int_type __c = this->uflow();
- if (__c != traits_type::eof())
+ const int_type __c = this->uflow();
+ if (!traits_type::eq_int_type(__c, traits_type::eof()))
{
traits_type::assign(*__s++, traits_type::to_char_type(__c));
++__ret;
return __ret;
}
- // Don't test against _M_buf + _M_buf_size, because _M_buf reflects
- // allocated space, and on certain (rare but entirely legal)
- // situations, there will be no allocated space yet the internal
- // buffers will still be valid. (This happens if setp is used to set
- // the internal buffer to say some externally-allocated sequence.)
template<typename _CharT, typename _Traits>
streamsize
basic_streambuf<_CharT, _Traits>::
streamsize __ret = 0;
while (__ret < __n)
{
- off_type __buf_len = _M_out_buf_size();
- if (__buf_len > 0)
+ const streamsize __buf_len = this->epptr() - this->pptr();
+ if (__buf_len)
{
- off_type __remaining = __n - __ret;
- off_type __len = min(__buf_len, __remaining);
- traits_type::copy(_M_out_cur, __s, __len);
+ const streamsize __remaining = __n - __ret;
+ const streamsize __len = std::min(__buf_len, __remaining);
+ traits_type::copy(this->pptr(), __s, __len);
__ret += __len;
__s += __len;
- _M_out_cur_move(__len);
+ this->pbump(__len);
}
if (__ret < __n)
{
int_type __c = this->overflow(traits_type::to_int_type(*__s));
- if (__c != traits_type::eof())
+ if (!traits_type::eq_int_type(__c, traits_type::eof()))
{
++__ret;
++__s;
// Conceivably, this could be used to implement buffer-to-buffer
// copies, if this was ever desired in an un-ambiguous way by the
- // standard. If so, then checks for __ios being zero would be
- // necessary.
+ // standard.
template<typename _CharT, typename _Traits>
streamsize
- __copy_streambufs(basic_ios<_CharT, _Traits>& __ios,
- basic_streambuf<_CharT, _Traits>* __sbin,
- basic_streambuf<_CharT, _Traits>* __sbout)
- {
- typedef typename _Traits::int_type int_type;
-
+ __copy_streambufs_eof(basic_streambuf<_CharT, _Traits>* __sbin,
+ basic_streambuf<_CharT, _Traits>* __sbout,
+ bool& __ineof)
+ {
streamsize __ret = 0;
- streamsize __bufsize = __sbin->in_avail();
- streamsize __xtrct;
- bool __testput = __sbout->_M_mode & ios_base::out;
- try
+ __ineof = true;
+ typename _Traits::int_type __c = __sbin->sgetc();
+ while (!_Traits::eq_int_type(__c, _Traits::eof()))
{
- while (__testput && __bufsize != -1)
+ __c = __sbout->sputc(_Traits::to_char_type(__c));
+ if (_Traits::eq_int_type(__c, _Traits::eof()))
{
- __xtrct = __sbout->sputn(__sbin->gptr(), __bufsize);
- __ret += __xtrct;
- __sbin->_M_in_cur_move(__xtrct);
- if (__xtrct == __bufsize)
- {
- if (__sbin->sgetc() == _Traits::eof())
- break;
- __bufsize = __sbin->in_avail();
- }
- else
- break;
+ __ineof = false;
+ break;
}
- }
- catch(exception& __fail)
- {
- __ios.setstate(ios_base::failbit);
- if ((__ios.exceptions() & ios_base::failbit) != 0)
- __throw_exception_again;
+ ++__ret;
+ __c = __sbin->snextc();
}
return __ret;
}
-} // namespace std
-#endif
+ template<typename _CharT, typename _Traits>
+ inline streamsize
+ __copy_streambufs(basic_streambuf<_CharT, _Traits>* __sbin,
+ basic_streambuf<_CharT, _Traits>* __sbout)
+ {
+ bool __ineof;
+ return __copy_streambufs_eof(__sbin, __sbout, __ineof);
+ }
+
+ // Inhibit implicit instantiations for required instantiations,
+ // which are defined via explicit instantiations elsewhere.
+ // NB: This syntax is a GNU extension.
+#if _GLIBCXX_EXTERN_TEMPLATE
+ extern template class basic_streambuf<char>;
+ extern template
+ streamsize
+ __copy_streambufs(basic_streambuf<char>*,
+ basic_streambuf<char>*);
+ extern template
+ streamsize
+ __copy_streambufs_eof(basic_streambuf<char>*,
+ basic_streambuf<char>*, bool&);
+
+#ifdef _GLIBCXX_USE_WCHAR_T
+ extern template class basic_streambuf<wchar_t>;
+ extern template
+ streamsize
+ __copy_streambufs(basic_streambuf<wchar_t>*,
+ basic_streambuf<wchar_t>*);
+ extern template
+ streamsize
+ __copy_streambufs_eof(basic_streambuf<wchar_t>*,
+ basic_streambuf<wchar_t>*, bool&);
+#endif
+#endif
+
+_GLIBCXX_END_NAMESPACE
+
+#endif
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