williamr@2: /*
williamr@2:  * © Portions copyright (c) 2006-2007 Nokia Corporation.  All rights reserved.
williamr@2:  * Copyright (c) 1999
williamr@2:  * Silicon Graphics Computer Systems, Inc.
williamr@2:  *
williamr@2:  * Copyright (c) 1999 
williamr@2:  * Boris Fomitchev
williamr@2:  *
williamr@2:  * This material is provided "as is", with absolutely no warranty expressed
williamr@2:  * or implied. Any use is at your own risk.
williamr@2:  *
williamr@2:  * Permission to use or copy this software for any purpose is hereby granted 
williamr@2:  * without fee, provided the above notices are retained on all copies.
williamr@2:  * Permission to modify the code and to distribute modified code is granted,
williamr@2:  * provided the above notices are retained, and a notice that the code was
williamr@2:  * modified is included with the above copyright notice.
williamr@2:  *
williamr@2:  */ 
williamr@2: 
williamr@2: #ifndef _STLP_SSTREAM_C
williamr@2: #define _STLP_SSTREAM_C
williamr@2: 
williamr@2: #ifndef _STLP_SSTREAM_H
williamr@2: # include <stl/_sstream.h>
williamr@2: #include <stl/_stdio_file.h> 
williamr@2: #endif
williamr@2: 
williamr@2: # if defined (_STLP_EXPOSE_STREAM_IMPLEMENTATION)
williamr@2: 
williamr@2: # if defined ( _STLP_NESTED_TYPE_PARAM_BUG )
williamr@2: // no wint_t is supported for this mode
williamr@2: # define __BSB_int_type__ int
williamr@2: # define __BSB_pos_type__ streampos
williamr@2: # else
williamr@2: # define __BSB_int_type__ _STLP_TYPENAME_ON_RETURN_TYPE basic_stringbuf<_CharT, _Traits, _Alloc>::int_type
williamr@2: # define __BSB_pos_type__ _STLP_TYPENAME_ON_RETURN_TYPE basic_stringbuf<_CharT, _Traits, _Alloc>::pos_type
williamr@2: # endif
williamr@2: 
williamr@2: _STLP_BEGIN_NAMESPACE
williamr@2: 
williamr@2: //----------------------------------------------------------------------
williamr@2: // Non-inline stringbuf member functions.
williamr@2: 
williamr@2: // Constructors.  Note that the base class constructor sets all of the
williamr@2: // get and area pointers to null.
williamr@2: 
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: _STLP_EXP_DECLSPEC basic_stringbuf<_CharT, _Traits, _Alloc>
williamr@2:   ::basic_stringbuf(ios_base::openmode __mode)
williamr@2:     : basic_streambuf<_CharT, _Traits>(), _M_mode(__mode), _M_str()
williamr@2: {
williamr@2: #ifdef __SYMBIAN32__
williamr@2: if (_M_mode & ios_base::out) {
williamr@2:    if (_M_mode & (ios_base::app | ios_base::ate))
williamr@2:        //increment the streampos to reflect the current streampos while writing
williamr@2:        _M_str._M_stream_pos += _M_str.size();
williamr@2: }
williamr@2: #endif
williamr@2: }
williamr@2: 
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: _STLP_EXP_DECLSPEC basic_stringbuf<_CharT, _Traits, _Alloc>
williamr@2:   ::basic_stringbuf(const basic_string<_CharT, _Traits, _Alloc>& __s, ios_base::openmode __mode)
williamr@2:     : basic_streambuf<_CharT, _Traits>(), _M_mode(__mode), _M_str(__s)
williamr@2: {
williamr@2: #ifdef __SYMBIAN32__
williamr@2: if (_M_mode & ios_base::out) {
williamr@2:    if (_M_mode & (ios_base::app | ios_base::ate))
williamr@2:      //increment the streampos to reflect the current streampos while writing
williamr@2:      _M_str._M_stream_pos += _M_str.size();
williamr@2: }
williamr@2: #endif
williamr@2:   _M_set_ptrs();
williamr@2: }
williamr@2: 
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: _STLP_EXP_DECLSPEC basic_stringbuf<_CharT, _Traits, _Alloc>::~basic_stringbuf()
williamr@2: {}
williamr@2: 
williamr@2: // Set the underlying string to a new value.
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: _STLP_EXP_DECLSPEC void 
williamr@2: basic_stringbuf<_CharT, _Traits, _Alloc>::str(const basic_string<_CharT, _Traits, _Alloc>& __s)
williamr@2: {
williamr@2:   _M_str = __s;
williamr@2:   _M_set_ptrs();
williamr@2: }
williamr@2: 
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: void 
williamr@2: basic_stringbuf<_CharT, _Traits, _Alloc>::_M_set_ptrs() {
williamr@2:   _CharT* __data_ptr = __CONST_CAST(_CharT*,_M_str.data());
williamr@2:   _CharT* __data_end = __data_ptr + _M_str.size();
williamr@2:   // The initial read position is the beginning of the string.
williamr@2:   if (_M_mode & ios_base::in) {
williamr@2:     if (_M_mode & ios_base::ate)
williamr@2:       this->setg(__data_ptr, __data_end, __data_end);
williamr@2:     else
williamr@2:       this->setg(__data_ptr, __data_ptr, __data_end);
williamr@2:   }
williamr@2:   
williamr@2:   // The initial write position is the beginning of the string.
williamr@2:   if (_M_mode & ios_base::out) {
williamr@2:     if (_M_mode & (ios_base::app | ios_base::ate))
williamr@2:       this->setp(__data_end, __data_end);
williamr@2:     else
williamr@2:       this->setp(__data_ptr, __data_end);
williamr@2:   }
williamr@2: }
williamr@2: 
williamr@2: // Precondition: gptr() >= egptr().  Returns a character, if one is available.
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: _STLP_EXP_DECLSPEC __BSB_int_type__
williamr@2: basic_stringbuf<_CharT, _Traits, _Alloc>::underflow()
williamr@2: {
williamr@2:   return this->gptr() != this->egptr()
williamr@2:     ? _Traits::to_int_type(*this->gptr())
williamr@2:     : _Traits::eof();
williamr@2: }
williamr@2: 
williamr@2: // Precondition: gptr() >= egptr().
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: _STLP_EXP_DECLSPEC __BSB_int_type__
williamr@2: basic_stringbuf<_CharT, _Traits, _Alloc>::uflow()
williamr@2: {
williamr@2:   if (this->gptr() != this->egptr()) {
williamr@2:     int_type __c = _Traits::to_int_type(*this->gptr());
williamr@2:     this->gbump(1);
williamr@2:     return __c;
williamr@2:   }
williamr@2:   else
williamr@2:     return _Traits::eof();
williamr@2: }
williamr@2: 
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: _STLP_EXP_DECLSPEC __BSB_int_type__
williamr@2: basic_stringbuf<_CharT, _Traits, _Alloc>::pbackfail(int_type __c)
williamr@2: {
williamr@2:   if (this->gptr() != this->eback()) {
williamr@2:     if (!_Traits::eq_int_type(__c, _Traits::eof())) {
williamr@2: 
williamr@2: if (_Traits::eq(_Traits::to_char_type(__c), this->gptr()[-1])
williamr@2:       		|| _M_mode == (ios_base::in | ios_base::out)) {
williamr@2:         this->gbump(-1);
williamr@2:       	*this->gptr() = _Traits::to_char_type(__c);
williamr@2:       	return _Traits::not_eof(__c);
williamr@2:       }
williamr@2:       else{
williamr@2: 	  	return _Traits::eof();
williamr@2: 	  }
williamr@2:     }
williamr@2:     else {
williamr@2:       this->gbump(-1);
williamr@2:       return _Traits::not_eof(__c);
williamr@2:     }
williamr@2:   }
williamr@2: 	else
williamr@2:     return _Traits::eof();
williamr@2: }
williamr@2: 
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: _STLP_EXP_DECLSPEC __BSB_int_type__
williamr@2: basic_stringbuf<_CharT, _Traits, _Alloc>::overflow(int_type __c)
williamr@2: {
williamr@2:   // fbp : reverse order of "ifs" to pass Dietmar's test.
williamr@2:   // Apparently, standard allows overflow with eof even for read-only streams.
williamr@2:   if (!_Traits::eq_int_type(__c, _Traits::eof())) {
williamr@2:     if (_M_mode & ios_base::out) {
williamr@2:       if (!(_M_mode & ios_base::in)) {
williamr@2:         // It's a write-only streambuf, so we can use special append buffer.
williamr@2:         if (this->pptr() == this->epptr())
williamr@2:           this->_M_append_buffer();
williamr@2:       
williamr@2:         if (this->pptr() != this->epptr()) {
williamr@2:           *this->pptr() = _Traits::to_char_type(__c);
williamr@2:           this->pbump(1);
williamr@2:           return __c;
williamr@2:         }
williamr@2:         else
williamr@2:           return _Traits::eof();
williamr@2:       }
williamr@2: 
williamr@2:       else {
williamr@2:         // We're not using a special append buffer, just the string itself.
williamr@2:         if (this->pptr() == this->epptr()) {
williamr@2:           ptrdiff_t __offset = this->gptr() - this->eback();
williamr@2:           _M_str.push_back(_Traits::to_char_type(__c));
williamr@2: 
williamr@2: 	  _CharT* __data_ptr = __CONST_CAST(_CharT*,_M_str.data());
williamr@2: 	  size_t __data_size = _M_str.size();
williamr@2: 
williamr@2:           this->setg(__data_ptr, __data_ptr + __offset, __data_ptr+__data_size);
williamr@2:           this->setp(__data_ptr, __data_ptr + __data_size);
williamr@2:           this->pbump((int)__data_size);
williamr@2:           return __c;
williamr@2:         }
williamr@2:         else {
williamr@2:           *this->pptr() = _Traits::to_char_type(__c);
williamr@2:           this->pbump(1);
williamr@2:           return __c;
williamr@2:         }
williamr@2:       }
williamr@2:     }
williamr@2:     else                          // Overflow always fails if it's read-only 
williamr@2:       return _Traits::eof();
williamr@2:   }
williamr@2:   else                        // __c is EOF, so we don't have to do anything
williamr@2:     return _Traits::not_eof(__c);
williamr@2: }
williamr@2: 
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: _STLP_EXP_DECLSPEC streamsize 
williamr@2: basic_stringbuf<_CharT, _Traits, _Alloc>::xsputn(const char_type* __s,
williamr@2:                                                  streamsize __n)
williamr@2: {
williamr@2:   streamsize __nwritten = 0;
williamr@2: 
williamr@2:   if ((_M_mode & ios_base::out) && __n > 0) {
williamr@2:     // If the put pointer is somewhere in the middle of the string,
williamr@2:     // then overwrite instead of append.
williamr@2:     if (this->pbase() == _M_str.data() ) {
williamr@2:       ptrdiff_t __avail = _M_str.data() + _M_str.size() - this->pptr();
williamr@2:       if (__avail > __n) {
williamr@2:         _Traits::copy(this->pptr(), __s, __n);
williamr@2:         this->pbump((int)__n);
williamr@2: #ifdef __SYMBIAN32__
williamr@2:    //     _M_str._M_stream_pos += __n; //increment streampos to number of characters in stream
williamr@2: #endif
williamr@2:         return __n;
williamr@2:       }
williamr@2:       else {
williamr@2:         _Traits::copy(this->pptr(), __s, __avail);
williamr@2:         __nwritten += __avail;
williamr@2:         __n -= __avail;
williamr@2:         __s += __avail;
williamr@2: #ifdef __SYMBIAN32__
williamr@2:   //      _M_str._M_stream_pos += __avail;//increment streampos to number of characters in stream
williamr@2: #endif
williamr@2:         this->setp(_M_Buf, _M_Buf + __STATIC_CAST(int,_S_BufSiz));
williamr@2:       }
williamr@2:     }
williamr@2: 
williamr@2:     // At this point we know we're appending.
williamr@2:     if (_M_mode & ios_base::in) {
williamr@2:       ptrdiff_t __get_offset = this->gptr() - this->eback();
williamr@2:       _M_str.append(__s, __s + __n);
williamr@2:       
williamr@2:       _CharT* __data_ptr = __CONST_CAST(_CharT*,_M_str.data());
williamr@2:       size_t __data_size = _M_str.size();
williamr@2: 
williamr@2:       this->setg(__data_ptr, __data_ptr + __get_offset, __data_ptr+__data_size);
williamr@2:       this->setp(__data_ptr, __data_ptr + __data_size);
williamr@2:       this->pbump((int)__data_size);
williamr@2:     }
williamr@2:     else {
williamr@2:       _M_append_buffer();
williamr@2: #ifdef __SYMBIAN32__      
williamr@2:       if (_M_str._M_stream_pos >= 0 
williamr@2:           && (_M_str._M_stream_pos < _M_str.size())) {          
williamr@2:           if((_M_str.size() - _M_str._M_stream_pos) >= __n)
williamr@2:           	_M_str.replace(_M_str._M_stream_pos, __n, __s);          
williamr@2:           else
williamr@2:           	{
williamr@2:           	_M_str.replace(_M_str._M_stream_pos, (_M_str.size() - _M_str._M_stream_pos), __s);
williamr@2:           	_M_str.append(__s + (__n - (_M_str.size() - _M_str._M_stream_pos)), __s + __n);
williamr@2:           	}
williamr@2:       } else {
williamr@2:           _M_str.append(__s, __s + __n);
williamr@2:       }
williamr@2:       _M_str._M_stream_pos += __n;
williamr@2: #else //__SYMBIAN32__      
williamr@2:       _M_str.append(__s, __s + __n);
williamr@2: #endif // __SYMBIAN32__      
williamr@2:     }
williamr@2:     __nwritten += __n;
williamr@2:   }
williamr@2: 
williamr@2:   return __nwritten;
williamr@2: }
williamr@2: 
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: streamsize 
williamr@2: basic_stringbuf<_CharT, _Traits, _Alloc>::_M_xsputnc(char_type __c,
williamr@2:                                                      streamsize __n)
williamr@2: {
williamr@2:   streamsize __nwritten = 0;
williamr@2: 
williamr@2:   if ((_M_mode & ios_base::out) && __n > 0) {
williamr@2:     // If the put pointer is somewhere in the middle of the string,
williamr@2:     // then overwrite instead of append.
williamr@2:     if (this->pbase() == _M_str.data()) {
williamr@2:       ptrdiff_t __avail = _M_str.data() + _M_str.size() - this->pptr();
williamr@2:       if (__avail > __n) {
williamr@2:         _Traits::assign(this->pptr(), __n, __c);
williamr@2:         this->pbump((int)__n);
williamr@2:         return __n;
williamr@2:       }
williamr@2:       else {
williamr@2:         _Traits::assign(this->pptr(), __avail, __c);
williamr@2:         __nwritten += __avail;
williamr@2:         __n -= __avail;
williamr@2:         this->setp(_M_Buf, _M_Buf + __STATIC_CAST(int,_S_BufSiz));
williamr@2:       }
williamr@2:     }
williamr@2: 
williamr@2:     // At this point we know we're appending.
williamr@2:     if (this->_M_mode & ios_base::in) {
williamr@2:       ptrdiff_t __get_offset = this->gptr() - this->eback();
williamr@2:       _M_str.append(__n, __c);
williamr@2: 
williamr@2:       _CharT* __data_ptr = __CONST_CAST(_CharT*,_M_str.data());
williamr@2:       size_t __data_size = _M_str.size();
williamr@2: 
williamr@2:       this->setg(__data_ptr, __data_ptr + __get_offset, __data_ptr+__data_size);
williamr@2:       this->setp(__data_ptr, __data_ptr + __data_size);
williamr@2:       this->pbump((int)__data_size);
williamr@2: 
williamr@2:     }
williamr@2:     else {
williamr@2:       _M_append_buffer();
williamr@2: //      _M_str.append(__n, __c);
williamr@2: #ifdef __SYMBIAN32__      
williamr@2:       if (_M_str._M_stream_pos >= 0 
williamr@2:           && (_M_str._M_stream_pos < _M_str.size())) {          
williamr@2:           if((_M_str.size() - _M_str._M_stream_pos) >= __n)
williamr@2:           	_M_str.replace(_M_str._M_stream_pos,__n, __n, __c);          
williamr@2:           else
williamr@2:           	{
williamr@2:           	_M_str.replace(_M_str._M_stream_pos, (_M_str.size() - _M_str._M_stream_pos), (_M_str.size() - _M_str._M_stream_pos), __c);
williamr@2:           	_M_str.append(__n, __c);
williamr@2:           	}
williamr@2:       } else {
williamr@2:           _M_str.append(__n, __c);
williamr@2:       }
williamr@2:       _M_str._M_stream_pos += __n;
williamr@2: #else //__SYMBIAN32__      
williamr@2:       _M_str.append(__n, __c);
williamr@2: #endif // __SYMBIAN32__      
williamr@2:     }
williamr@2: 
williamr@2:     __nwritten += __n;
williamr@2:   }
williamr@2: 
williamr@2:   return __nwritten;
williamr@2: }
williamr@2: 
williamr@2: // According to the C++ standard the effects of setbuf are implementation
williamr@2: // defined, except that setbuf(0, 0) has no effect.  In this implementation,
williamr@2: // setbuf(<anything>, n), for n > 0, calls reserve(n) on the underlying
williamr@2: // string.
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: _STLP_EXP_DECLSPEC basic_streambuf<_CharT, _Traits>*
williamr@2: #ifdef __SYMBIAN32__
williamr@2: basic_stringbuf<_CharT, _Traits, _Alloc>::setbuf(_CharT* __s, streamsize __n)
williamr@2: #else
williamr@2: basic_stringbuf<_CharT, _Traits, _Alloc>::setbuf(_CharT*, streamsize __n)
williamr@2: #endif //__SYMBIAN32__
williamr@2: {
williamr@2:   if (__n > 0) {
williamr@2:     bool __do_get_area = false;
williamr@2:     bool __do_put_area = false;
williamr@2:     ptrdiff_t __offg = 0;
williamr@2:     ptrdiff_t __offp = 0;
williamr@2: 
williamr@2:     if (this->pbase() == _M_str.data()) {
williamr@2:       __do_put_area = true;
williamr@2:       __offp = this->pptr() - this->pbase();
williamr@2:     }
williamr@2: 
williamr@2:     if (this->eback() == _M_str.data()) {
williamr@2:       __do_get_area = true;
williamr@2:       __offg = this->gptr() - this->eback();
williamr@2:     }
williamr@2: 
williamr@2:     if ((_M_mode & ios_base::out) && !(_M_mode & ios_base::in))
williamr@2:       _M_append_buffer();
williamr@2: 
williamr@2:     _M_str.reserve(__n);
williamr@2: 
williamr@2:     _CharT* __data_ptr = __CONST_CAST(_CharT*,_M_str.data());
williamr@2: #ifdef __SYMBIAN32__
williamr@2:     size_t __data_size = __n;
williamr@2:     memmove(__data_ptr, __s, __n*sizeof(_CharT));    
williamr@2:     _M_str._M_start = __data_ptr;
williamr@2:     _M_str._M_finish = __data_ptr+__n;
williamr@2: #else
williamr@2:     size_t __data_size = _M_str.size();
williamr@2: #endif //__SYMBIAN32__
williamr@2: 
williamr@2:     if (__do_get_area) {
williamr@2: #ifdef __SYMBIAN32__
williamr@2:       this->setg(__data_ptr, __data_ptr, __data_ptr+__data_size);
williamr@2: #else
williamr@2:       this->setg(__data_ptr, __data_ptr + __offg, __data_ptr+__data_size);
williamr@2: #endif //__SYMBIAN32__      
williamr@2:     }
williamr@2: 
williamr@2:     if (__do_put_area) {
williamr@2:       this->setp(__data_ptr, __data_ptr+__data_size);
williamr@2: #ifndef __SYMBIAN32__
williamr@2:       this->pbump((int)__offp);
williamr@2: #endif //__SYMBIAN32__      
williamr@2:     }
williamr@2:   }
williamr@2: 
williamr@2:   return this;
williamr@2: }
williamr@2: 
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: _STLP_EXP_DECLSPEC __BSB_pos_type__
williamr@2: basic_stringbuf<_CharT, _Traits, _Alloc>::seekoff(off_type __off, 
williamr@2:             ios_base::seekdir __dir,
williamr@2:             ios_base::openmode __mode)
williamr@2: {
williamr@2:   bool __stl_in  = false;
williamr@2:   bool __stl_out = false;
williamr@2:   
williamr@2:   if ((__mode & (ios_base::in | ios_base::out)) == (ios_base::in | ios_base::out) ) {
williamr@2:     if (__dir == ios_base::beg || __dir == ios_base::end)
williamr@2:       __stl_in = __stl_out = true;
williamr@2:   }
williamr@2:   else if (__mode & ios_base::in)
williamr@2:     __stl_in = true;
williamr@2:   else if (__mode & ios_base::out)
williamr@2:     __stl_out = true;
williamr@2: 
williamr@2:   if (!__stl_in && !__stl_out)
williamr@2:     return pos_type(off_type(-1));
williamr@2:   else if ((__stl_in  && (!(_M_mode & ios_base::in) || this->gptr() == 0)) ||
williamr@2:            (__stl_out && (!(_M_mode & ios_base::out) || this->pptr() == 0)))
williamr@2:     return pos_type(off_type(-1));
williamr@2: 
williamr@2: #ifdef __SYMBIAN32__
williamr@2:   if (_M_mode & ios_base::out)
williamr@2: #else
williamr@2:   if ((_M_mode & ios_base::out) && !(_M_mode & ios_base::in))
williamr@2: #endif
williamr@2:     _M_append_buffer();
williamr@2: 
williamr@2:   streamoff __newoff;
williamr@2:   switch(__dir) {
williamr@2:   case ios_base::beg:
williamr@2:     __newoff = 0;
williamr@2:     break;
williamr@2:   case ios_base::end:
williamr@2:     __newoff = _M_str.size();
williamr@2:     break;
williamr@2:   case ios_base::cur:
williamr@2:     __newoff = __stl_in ? this->gptr() - this->eback() 
williamr@2: #ifdef __SYMBIAN32__    
williamr@2:                     : ((this->pbase() != this->_M_str) ? _M_str._M_stream_pos
williamr@2:                     : this->pptr() - this->pbase());
williamr@2: #else
williamr@2:                     : this->pptr() - this->pbase();
williamr@2: #endif //__SYMBIAN32__                                                            
williamr@2:     break;
williamr@2:   default:
williamr@2:     return pos_type(off_type(-1));
williamr@2:   }
williamr@2: 
williamr@2:   __off += __newoff;
williamr@2: 
williamr@2:   if (__stl_in) {
williamr@2:     ptrdiff_t __n = this->egptr() - this->eback();
williamr@2: 
williamr@2:     if (__off < 0 || __off > __n)
williamr@2:       return pos_type(off_type(-1));
williamr@2:     else
williamr@2:       this->setg(this->eback(), this->eback() + __off, this->eback() + __n);
williamr@2:   }
williamr@2: 
williamr@2:   if (__stl_out) {
williamr@2:     ptrdiff_t __n;
williamr@2: #ifdef __SYMBIAN32__
williamr@2:     //if (this->pbase() != this->_M_str) {
williamr@2:     void* __data_ptr1 = reinterpret_cast<void*>(this->pbase());
williamr@2: 		_CharT* __data_ptr2 = __CONST_CAST(_CharT*,this->_M_str.data());
williamr@2: 				
williamr@2:        if (__data_ptr1 != __data_ptr2) {
williamr@2:         __n = _M_str.size();
williamr@2:     } else {
williamr@2: #endif // __SYMBIAN32__
williamr@2:     __n = this->epptr() - this->pbase();
williamr@2: #ifdef __SYMBIAN32__
williamr@2:     }
williamr@2: #endif //__SYMBIAN32__        
williamr@2:     if (__off < 0 || __off > __n)
williamr@2:       return pos_type(off_type(-1));
williamr@2:     else {
williamr@2: #ifdef __SYMBIAN32__
williamr@2: 		void* __data_ptr1 = reinterpret_cast<void*>(this->pbase());
williamr@2: 		_CharT* __data_ptr2 = __CONST_CAST(_CharT*,this->_M_str.data());
williamr@2: 				
williamr@2:        if (__data_ptr1 != __data_ptr2) {
williamr@2:            _M_str._M_stream_pos = __off;
williamr@2:        } else {
williamr@2: #endif //__SYMBIAN32__
williamr@2:       this->setp(this->pbase(), this->pbase() + __n);
williamr@2:       this->pbump((int)__off);
williamr@2: #ifdef __SYMBIAN32__      
williamr@2:       }
williamr@2: #endif // __SYMBIAN32__      
williamr@2:     }
williamr@2:   }
williamr@2: 
williamr@2:   return pos_type(__off);
williamr@2: }
williamr@2: 
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: _STLP_EXP_DECLSPEC __BSB_pos_type__
williamr@2: basic_stringbuf<_CharT, _Traits, _Alloc>
williamr@2:   ::seekpos(pos_type __pos, ios_base::openmode __mode)
williamr@2: {
williamr@2:   bool __stl_in  = (__mode & ios_base::in) != 0;
williamr@2:   bool __stl_out = (__mode & ios_base::out) != 0;
williamr@2: 
williamr@2:   if ((__stl_in  && (!(_M_mode & ios_base::in) || this->gptr() == 0)) ||
williamr@2:       (__stl_out && (!(_M_mode & ios_base::out) || this->pptr() == 0)) ||
williamr@2:       (!__stl_in && !__stl_out))
williamr@2:     return pos_type(off_type(-1));
williamr@2: 
williamr@2:   const off_type __n = __pos - pos_type(off_type(0));
williamr@2:   if ((_M_mode & ios_base::out) && !(_M_mode & ios_base::in))
williamr@2:     _M_append_buffer();
williamr@2: 
williamr@2:   if (__stl_in) {
williamr@2:     if (__n < 0 || __n > this->egptr() - this->eback())
williamr@2:       return pos_type(off_type(-1));
williamr@2:     this->setg(this->eback(), this->eback() + __n, this->egptr());
williamr@2:   }
williamr@2: 
williamr@2:   if (__stl_out) {
williamr@2:     if (__n < 0 || size_t(__n) > _M_str.size())
williamr@2:       return pos_type(off_type(-1));
williamr@2: 
williamr@2:     _CharT* __data_ptr = __CONST_CAST(_CharT*,_M_str.data());
williamr@2:     size_t __data_size = _M_str.size();
williamr@2:     
williamr@2:     this->setp(__data_ptr, __data_ptr+__data_size);
williamr@2:     this->pbump((int)__n);
williamr@2:   }
williamr@2: 
williamr@2:   return __pos;
williamr@2: }
williamr@2: 
williamr@2: // This is declared as a const member function because it is 
williamr@2: // called by basic_stringbuf<>::str().  Precondition: this is a
williamr@2: // write-only stringbuf.  We can't use an output buffer for read-
williamr@2: // write stringbufs.  Postcondition: pptr is reset to the beginning
williamr@2: // of the buffer.
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: void basic_stringbuf<_CharT, _Traits, _Alloc>::_M_append_buffer() const
williamr@2: 
williamr@2: {
williamr@2:   // Do we have a buffer to append?
williamr@2:   if (this->pbase() == this->_M_Buf && this->pptr() != this->_M_Buf) {
williamr@2:     basic_stringbuf<_CharT, _Traits, _Alloc>* __this = __CONST_CAST(_Self*,this);
williamr@2: #ifdef __SYMBIAN32__    
williamr@2:     size_t __n = this->pptr() - this->pbase();
williamr@2:     if (__this->_M_str._M_stream_pos >= 0 
williamr@2:         && (__this->_M_str._M_stream_pos != __this->_M_str.size())) {
williamr@2:         {
williamr@2:         *(this->pptr()) = (_CharT)0;
williamr@2: #ifdef  __SYMBIAN32__
williamr@2:         __this->_M_str.replace(_M_str._M_stream_pos, __n, (const _CharT*)this->pbase(), (const _CharT*)this->pptr()-(const _CharT*)this->pbase());
williamr@2: #else
williamr@2: 	__this->_M_str.replace(_M_str._M_stream_pos, __n, (const _CharT*)this->pbase());
williamr@2: 
williamr@2: #endif
williamr@2:         }
williamr@2:     } else {
williamr@2:         __this->_M_str.append((const _CharT*)this->pbase(), (const _CharT*)this->pptr());
williamr@2:     }
williamr@2:     __this->_M_str._M_stream_pos += __n;
williamr@2: #else // __SYMBAIN32__    
williamr@2:     __this->_M_str.append((const _CharT*)this->pbase(), (const _CharT*)this->pptr());
williamr@2: #endif // __SYMBIAN32__    
williamr@2:     __this->setp(__CONST_CAST(_CharT*,_M_Buf),
williamr@2:                  __CONST_CAST(_CharT*,_M_Buf + __STATIC_CAST(int,_S_BufSiz)));
williamr@2:   }
williamr@2: 
williamr@2:   // Have we run off the end of the string?
williamr@2:   else if (this->pptr() == this->epptr()) {
williamr@2:     basic_stringbuf<_CharT, _Traits, _Alloc>* __this = __CONST_CAST(_Self*,this);
williamr@2:     __this->setp(__CONST_CAST(_CharT*,_M_Buf),
williamr@2:                  __CONST_CAST(_CharT*,_M_Buf + __STATIC_CAST(int,_S_BufSiz)));
williamr@2:   __this->_M_str._M_stream_pos = __this->_M_str._M_finish - __this->_M_str._M_start;
williamr@2:   }
williamr@2: }
williamr@2: 
williamr@2: //----------------------------------------------------------------------
williamr@2: // Non-inline istringstream member functions.
williamr@2: 
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: basic_istringstream<_CharT, _Traits, _Alloc>
williamr@2:   ::basic_istringstream(ios_base::openmode __mode)
williamr@2:     : basic_istream<_CharT, _Traits>(0),
williamr@2:       _M_buf(__mode | ios_base::in)
williamr@2: {
williamr@2:   this->init(&_M_buf);
williamr@2: }
williamr@2: 
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: basic_istringstream<_CharT, _Traits, _Alloc>
williamr@2:   ::basic_istringstream(const _String& __str,ios_base::openmode __mode)
williamr@2:     : basic_istream<_CharT, _Traits>(0),
williamr@2:       _M_buf(__str, __mode | ios_base::in)
williamr@2: {
williamr@2:   this->init(&_M_buf);
williamr@2: }
williamr@2: 
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: basic_istringstream<_CharT, _Traits, _Alloc>::~basic_istringstream()
williamr@2: {}
williamr@2: 
williamr@2: //----------------------------------------------------------------------
williamr@2: // Non-inline ostringstream member functions.
williamr@2: 
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: basic_ostringstream<_CharT, _Traits, _Alloc>
williamr@2:   ::basic_ostringstream(ios_base::openmode __mode)
williamr@2:     : basic_ostream<_CharT, _Traits>(0),
williamr@2:       _M_buf(__mode | ios_base::out)
williamr@2: {
williamr@2:   this->init(&_M_buf);
williamr@2: }
williamr@2:   
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: basic_ostringstream<_CharT, _Traits, _Alloc>
williamr@2:   ::basic_ostringstream(const _String& __str, ios_base::openmode __mode)
williamr@2:     : basic_ostream<_CharT, _Traits>(0),
williamr@2:       _M_buf(__str, __mode | ios_base::out)
williamr@2: {
williamr@2:   this->init(&_M_buf);
williamr@2: }
williamr@2: 
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: basic_ostringstream<_CharT, _Traits, _Alloc>::~basic_ostringstream()
williamr@2: {}
williamr@2: 
williamr@2: //----------------------------------------------------------------------
williamr@2: // Non-inline stringstream member functions.
williamr@2: 
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: _STLP_EXP_DECLSPEC basic_stringstream<_CharT, _Traits, _Alloc>
williamr@2:   ::basic_stringstream(ios_base::openmode __mode)
williamr@2:     : basic_iostream<_CharT, _Traits>(0), _M_buf(__mode)
williamr@2: {
williamr@2:    this->init(&_M_buf);
williamr@2: }
williamr@2: 
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: _STLP_EXP_DECLSPEC basic_stringstream<_CharT, _Traits, _Alloc>
williamr@2:   ::basic_stringstream(const _String& __str, ios_base::openmode __mode)
williamr@2:     : basic_iostream<_CharT, _Traits>(0), _M_buf(__str, __mode)
williamr@2: {
williamr@2:   this->init(&_M_buf);
williamr@2: }
williamr@2: 
williamr@2: template <class _CharT, class _Traits, class _Alloc>
williamr@2: basic_stringstream<_CharT, _Traits, _Alloc>::~basic_stringstream()
williamr@2: {}
williamr@2: 
williamr@2: _STLP_END_NAMESPACE
williamr@2: 
williamr@2: # undef __BSB_int_type__
williamr@2: # undef __BSB_pos_type__
williamr@2: 
williamr@2: # endif /* EXPOSE */
williamr@2: 
williamr@2: #endif /* _STLP_SSTREAM_C */