/*

 * Copyright (c) 1999

 * Silicon Graphics Computer Systems, Inc.

 *

 * Copyright (c) 1999

 * Boris Fomitchev

 *

 * This material is provided "as is", with absolutely no warranty expressed

 * or implied. Any use is at your own risk.

 *

 * Permission to use or copy this software for any purpose is hereby granted

 * without fee, provided the above notices are retained on all copies.

 * Permission to modify the code and to distribute modified code is granted,

 * provided the above notices are retained, and a notice that the code was

 * modified is included with the above copyright notice.

 *

 */

#ifndef _STLP_SSTREAM_C

#define _STLP_SSTREAM_C

#ifndef _STLP_INTERNAL_SSTREAM

#  include <stl/_sstream.h>

#endif

#if defined ( _STLP_NESTED_TYPE_PARAM_BUG )

// no wint_t is supported for this mode

#  define __BSB_int_type__ int

#  define __BSB_pos_type__ streampos

#else

#  define __BSB_int_type__ _STLP_TYPENAME_ON_RETURN_TYPE basic_stringbuf<_CharT, _Traits, _Alloc>::int_type

#  define __BSB_pos_type__ _STLP_TYPENAME_ON_RETURN_TYPE basic_stringbuf<_CharT, _Traits, _Alloc>::pos_type

#endif

_STLP_BEGIN_NAMESPACE

//----------------------------------------------------------------------

// Non-inline stringbuf member functions.

// Constructors.  Note that the base class constructor sets all of the

// get and area pointers to null.

template <class _CharT, class _Traits, class _Alloc>

basic_stringbuf<_CharT, _Traits, _Alloc>

  ::basic_stringbuf(ios_base::openmode __mode)

    : basic_streambuf<_CharT, _Traits>(), _M_mode(__mode), _M_str()

{}

template <class _CharT, class _Traits, class _Alloc>

basic_stringbuf<_CharT, _Traits, _Alloc>

  ::basic_stringbuf(const basic_string<_CharT, _Traits, _Alloc>& __s, ios_base::openmode __mode)

    : basic_streambuf<_CharT, _Traits>(), _M_mode(__mode), _M_str(__s)

{

  _M_set_ptrs();

}

// Set the underlying string to a new value.

template <class _CharT, class _Traits, class _Alloc>

void

basic_stringbuf<_CharT, _Traits, _Alloc>::str(const basic_string<_CharT, _Traits, _Alloc>& __s)

{

  _M_str = __s;

  _M_set_ptrs();

}

template <class _CharT, class _Traits, class _Alloc>

void

basic_stringbuf<_CharT, _Traits, _Alloc>::_M_set_ptrs() {

  _CharT* __data_ptr = __CONST_CAST(_CharT*,_M_str.data());

  _CharT* __data_end = __data_ptr + _M_str.size();

  // The initial read position is the beginning of the string.

  if (_M_mode & ios_base::in) {

    if (_M_mode & ios_base::ate)

      this->setg(__data_ptr, __data_end, __data_end);

    else

      this->setg(__data_ptr, __data_ptr, __data_end);

  }

  // The initial write position is the beginning of the string.

  if (_M_mode & ios_base::out) {

    if (_M_mode & (ios_base::app | ios_base::ate))

      this->setp(__data_end, __data_end);

    else

      this->setp(__data_ptr, __data_end);

  }

}

// This is declared as a const member function because it is

// called by basic_stringbuf<>::str().  Precondition: this is a

// write-only stringbuf.  We can't use an output buffer for read-

// write stringbufs.  Postcondition: pptr is reset to the beginning

// of the buffer.

template <class _CharT, class _Traits, class _Alloc>

void basic_stringbuf<_CharT, _Traits, _Alloc>::_M_append_buffer() const {

  // Do we have a buffer to append?

  if (this->pbase() == this->_M_Buf && this->pptr() != this->_M_Buf) {

    basic_stringbuf<_CharT, _Traits, _Alloc>* __this = __CONST_CAST(_Self*,this);

    __this->_M_str.append((const _CharT*)this->pbase(), (const _CharT*)this->pptr());

#ifndef __MWERKS__

    __this->setp(__CONST_CAST(_CharT*,_M_Buf),

                 __CONST_CAST(_CharT*,_M_Buf + __STATIC_CAST(int,_S_BufSiz)));

#else // CodeWarrior treat const char * and const char [8] as different types

    __this->setp((_CharT*)_M_Buf,

                 (_CharT*)(_M_Buf + __STATIC_CAST(int,_S_BufSiz)));

#endif

  }

  // Have we run off the end of the string?

  else if (this->pptr() == this->epptr()) {

    basic_stringbuf<_CharT, _Traits, _Alloc>* __this = __CONST_CAST(_Self*,this);

#ifndef __MWERKS__

    __this->setp(__CONST_CAST(_CharT*,_M_Buf),

                 __CONST_CAST(_CharT*,_M_Buf + __STATIC_CAST(int,_S_BufSiz)));

#else // CodeWarrior treat const char * and const char [8] as different types

    __this->setp((_CharT*)_M_Buf,

                 (_CharT*)(_M_Buf + __STATIC_CAST(int,_S_BufSiz)));

#endif

  }

}

//----------------------------------------------------------------------

// Non-inline istringstream member functions.

template <class _CharT, class _Traits, class _Alloc>

basic_istringstream<_CharT, _Traits, _Alloc>

  ::basic_istringstream(ios_base::openmode __mode)

    : basic_istream<_CharT, _Traits>(0),

      _M_buf(__mode | ios_base::in) {

  this->init(&_M_buf);

}

template <class _CharT, class _Traits, class _Alloc>

basic_istringstream<_CharT, _Traits, _Alloc>

  ::basic_istringstream(const _String& __str,ios_base::openmode __mode)

    : basic_istream<_CharT, _Traits>(0),

      _M_buf(__str, __mode | ios_base::in) {

  this->init(&_M_buf);

}

//----------------------------------------------------------------------

// Non-inline ostringstream member functions.

template <class _CharT, class _Traits, class _Alloc>

basic_ostringstream<_CharT, _Traits, _Alloc>

  ::basic_ostringstream(ios_base::openmode __mode)

    : basic_ostream<_CharT, _Traits>(0),

      _M_buf(__mode | ios_base::out) {

  this->init(&_M_buf);

}

template <class _CharT, class _Traits, class _Alloc>

basic_ostringstream<_CharT, _Traits, _Alloc>

  ::basic_ostringstream(const _String& __str, ios_base::openmode __mode)

    : basic_ostream<_CharT, _Traits>(0),

      _M_buf(__str, __mode | ios_base::out) {

  this->init(&_M_buf);

}

//----------------------------------------------------------------------

// Non-inline stringstream member functions.

template <class _CharT, class _Traits, class _Alloc>

basic_stringstream<_CharT, _Traits, _Alloc>

  ::basic_stringstream(ios_base::openmode __mode)

    : basic_iostream<_CharT, _Traits>(0), _M_buf(__mode) {

   this->init(&_M_buf);

}

template <class _CharT, class _Traits, class _Alloc>

basic_stringstream<_CharT, _Traits, _Alloc>

  ::basic_stringstream(const _String& __str, ios_base::openmode __mode)

    : basic_iostream<_CharT, _Traits>(0), _M_buf(__str, __mode) {

  this->init(&_M_buf);

}

_STLP_END_NAMESPACE

# undef __BSB_int_type__

# undef __BSB_pos_type__

#endif /* _STLP_SSTREAM_C */

// Local Variables:

// mode:C++

// End: