sl@0: /*
sl@0:  * © Portions copyright (c) 2006-2007 Nokia Corporation.  All rights reserved.
sl@0:  *
sl@0:  * Copyright (c) 1999
sl@0:  * Silicon Graphics Computer Systems, Inc.
sl@0:  *
sl@0:  * Copyright (c) 1999 
sl@0:  * Boris Fomitchev
sl@0:  *
sl@0:  * This material is provided "as is", with absolutely no warranty expressed
sl@0:  * or implied. Any use is at your own risk.
sl@0:  *
sl@0:  * Permission to use or copy this software for any purpose is hereby granted 
sl@0:  * without fee, provided the above notices are retained on all copies.
sl@0:  * Permission to modify the code and to distribute modified code is granted,
sl@0:  * provided the above notices are retained, and a notice that the code was
sl@0:  * modified is included with the above copyright notice.
sl@0:  *
sl@0:  */ 
sl@0: # include "stlport_prefix.h"
sl@0: 
sl@0: 
sl@0: #include <stl/_streambuf.h>
sl@0: #include <stl/_algobase.h>
sl@0: 
sl@0: // Implementation of non-inline member functions of class
sl@0: // basic_streambuf<char, char_traits<char> >
sl@0: 
sl@0: # if defined (__hpux)
sl@0: #  define FILE_CAST(x) (__REINTERPRET_CAST(FILE*, x))
sl@0: # else
sl@0: #  define FILE_CAST(x) x
sl@0: # endif
sl@0: 
sl@0: _STLP_BEGIN_NAMESPACE
sl@0: 
sl@0: #if !defined(_STLP_WINCE)
sl@0: 
sl@0: _STLP_EXP_DECLSPEC basic_streambuf<char, char_traits<char> >::~basic_streambuf() {}
sl@0: 
sl@0: // This constructor is an extension.  It is for streambuf subclasses that
sl@0: // are synchronized with C stdio files.
sl@0: _STLP_EXP_DECLSPEC basic_streambuf<char, char_traits<char> >
sl@0:   ::basic_streambuf(FILE* __get, FILE* __put)
sl@0:     : _M_get(__get ? __get : FILE_CAST(&_M_default_get)),
sl@0:       _M_put(__put ? __put : FILE_CAST(&_M_default_put)),
sl@0:       _M_locale()
sl@0: {
sl@0:   _M_lock._M_initialize();
sl@0: 
sl@0:   if (_M_get == FILE_CAST(&_M_default_get))
sl@0:     _FILE_I_set(_M_get, 0, 0, 0);
sl@0:   if (_M_put == FILE_CAST(&_M_default_put))
sl@0:     _FILE_O_set(_M_put, 0, 0, 0);      
sl@0: }
sl@0: 
sl@0: _STLP_EXP_DECLSPEC basic_streambuf<char, char_traits<char> >
sl@0:         ::basic_streambuf _STLP_PSPEC2(char, char_traits<char>) ()
sl@0:     : _M_get(__REINTERPRET_CAST(FILE*,&_M_default_get)),
sl@0:       _M_put(__REINTERPRET_CAST(FILE*,&_M_default_put)), _M_locale()
sl@0:   {
sl@0:     // _M_lock._M_initialize();
sl@0:     _FILE_I_set(_M_get, 0, 0, 0);
sl@0:     _FILE_O_set(_M_put, 0, 0, 0);
sl@0:   }
sl@0: 
sl@0: // virtual functions
sl@0: 
sl@0: _STLP_EXP_DECLSPEC void basic_streambuf<char, char_traits<char> >::imbue(const locale&)
sl@0: {}
sl@0: 
sl@0: _STLP_EXP_DECLSPEC basic_streambuf<char, char_traits<char> >*
sl@0: basic_streambuf<char, char_traits<char> >::setbuf(char*, streamsize)
sl@0: {
sl@0:   return this;
sl@0: }
sl@0: 
sl@0: _STLP_EXP_DECLSPEC basic_streambuf<char, char_traits<char> >::pos_type
sl@0: basic_streambuf<char, char_traits<char> >
sl@0:   ::seekoff(off_type, ios_base::seekdir, ios_base::openmode)
sl@0: {
sl@0:   return pos_type(-1);
sl@0: }
sl@0: 
sl@0: _STLP_EXP_DECLSPEC basic_streambuf<char, char_traits<char> >::pos_type
sl@0: basic_streambuf<char, char_traits<char> >
sl@0:   ::seekpos(pos_type, ios_base::openmode)
sl@0: {
sl@0:   return pos_type(-1);
sl@0: }
sl@0: 
sl@0: _STLP_EXP_DECLSPEC int basic_streambuf<char, char_traits<char> >::sync()
sl@0: {
sl@0:   return 0;
sl@0: }
sl@0: 
sl@0: _STLP_EXP_DECLSPEC streamsize basic_streambuf<char, char_traits<char> >::showmanyc()
sl@0: {
sl@0:   return 0;
sl@0: }
sl@0: 
sl@0: _STLP_EXP_DECLSPEC streamsize basic_streambuf<char, char_traits<char> >
sl@0:   ::xsgetn(char* s, streamsize n)
sl@0: {
sl@0:   streamsize result = 0;
sl@0:   const int_type eof = traits_type::eof();
sl@0: 
sl@0:   while (result < n) {
sl@0:     if (_FILE_I_avail(_M_get) > 0) {
sl@0:       size_t chunk = (min) (__STATIC_CAST(size_t,_FILE_I_avail(_M_get)),
sl@0:                          __STATIC_CAST(size_t,n - result));
sl@0:       traits_type::copy(s, _FILE_I_next(_M_get), chunk);
sl@0:       result += chunk;
sl@0:       s += chunk;
sl@0:       _FILE_I_bump(_M_get, chunk);
sl@0:     }
sl@0:     else {
sl@0:       int_type c = sbumpc();
sl@0:       if (c != eof) {
sl@0:         *s = c;
sl@0:         ++result;
sl@0: 	++s;
sl@0:       }
sl@0:       else
sl@0:         break; 
sl@0:     }
sl@0:   }
sl@0:   
sl@0:   return result;
sl@0: }
sl@0: 
sl@0: _STLP_EXP_DECLSPEC basic_streambuf<char, char_traits<char> >::int_type
sl@0: basic_streambuf<char, char_traits<char> >::underflow()
sl@0: {
sl@0:   return traits_type::eof();
sl@0: }
sl@0: 
sl@0: _STLP_EXP_DECLSPEC basic_streambuf<char, char_traits<char> >::int_type
sl@0: basic_streambuf<char, char_traits<char> >::uflow()
sl@0: {
sl@0:   const int_type eof = traits_type::eof();
sl@0:   return this->underflow() == eof 
sl@0:     ? eof
sl@0:     : traits_type::to_int_type(_FILE_I_postincr(_M_get));
sl@0: }
sl@0: 
sl@0: _STLP_EXP_DECLSPEC basic_streambuf<char, char_traits<char> >::int_type
sl@0: basic_streambuf<char, char_traits<char> >::pbackfail(int_type /* __c */)
sl@0: {
sl@0:   return traits_type::eof();
sl@0: }
sl@0: 
sl@0: 
sl@0: _STLP_EXP_DECLSPEC streamsize basic_streambuf<char, char_traits<char> >
sl@0:   ::xsputn(const char* s, streamsize n)
sl@0: {
sl@0:   streamsize result = 0;
sl@0:   const int_type eof = traits_type::eof();
sl@0: 
sl@0:   while (result < n) {
sl@0:     if (_FILE_O_avail(_M_put) > 0) {
sl@0:       size_t chunk = (min) (__STATIC_CAST(size_t,_FILE_O_avail(_M_put)),
sl@0:                          __STATIC_CAST(size_t,n - result));
sl@0:       traits_type::copy(_FILE_O_next(_M_put), s, chunk);
sl@0:       result += chunk;
sl@0:       s += chunk;
sl@0:       _FILE_O_bump(_M_put, (int)chunk);
sl@0:     }
sl@0: 
sl@0:     else if (this->overflow(traits_type::to_int_type(*s)) != eof) {
sl@0:       ++result;
sl@0:       ++s;
sl@0:     }
sl@0:     else
sl@0:       break;
sl@0:   }
sl@0:   return result;
sl@0: }
sl@0: 
sl@0: _STLP_EXP_DECLSPEC streamsize basic_streambuf<char, char_traits<char> >
sl@0:   ::_M_xsputnc(char c, streamsize n)
sl@0: {
sl@0:   streamsize result = 0;
sl@0:   const int_type eof = traits_type::eof();
sl@0: 
sl@0:   while (result < n) {
sl@0:     if (_FILE_O_avail(_M_put) > 0) {
sl@0:       size_t chunk = (min) (__STATIC_CAST(size_t,_FILE_O_avail(_M_put)),
sl@0:                          __STATIC_CAST(size_t,n - result));
sl@0:       traits_type::assign(_FILE_O_next(_M_put), chunk, c);
sl@0:       result += chunk;
sl@0:       _FILE_O_bump(_M_put, (int)chunk);
sl@0:     }
sl@0: 
sl@0:     else if (this->overflow(traits_type::to_int_type(c)) != eof)
sl@0:       ++result;
sl@0:     else
sl@0:       break;
sl@0:   }
sl@0:   return result;
sl@0: }
sl@0: 
sl@0: _STLP_EXP_DECLSPEC basic_streambuf<char, char_traits<char> >::int_type
sl@0: basic_streambuf<char, char_traits<char> >::overflow(int_type/*  c */)
sl@0: {
sl@0:   return traits_type::eof();
sl@0: }
sl@0: 
sl@0: _STLP_EXP_DECLSPEC basic_streambuf<char, char_traits<char> >::int_type
sl@0: basic_streambuf<char, char_traits<char> >::_M_snextc_aux()
sl@0: {
sl@0:   int_type eof = traits_type::eof();
sl@0:   if (_FILE_I_avail(_M_get) == 0)
sl@0:     return this->uflow() == eof ? eof : this->sgetc();
sl@0:   else {
sl@0:     _FILE_I_set(_M_get,
sl@0:               _FILE_I_begin(_M_get), _FILE_I_end(_M_get), _FILE_I_end(_M_get));
sl@0:     return this->underflow();
sl@0:   }
sl@0: }
sl@0: 
sl@0: 
sl@0: _STLP_EXP_DECLSPEC locale basic_streambuf<char, char_traits<char> >::pubimbue(const locale& loc)
sl@0: {
sl@0:   this->imbue(loc);
sl@0:   locale tmp = _M_locale;
sl@0:   _M_locale = loc;
sl@0:   return tmp;
sl@0: }
sl@0: 
sl@0: #else
sl@0: 
sl@0: #if !defined(_STLP_NO_FORCE_INSTANTIATE)
sl@0: template class basic_streambuf<char, char_traits<char> >;
sl@0: #endif
sl@0: 
sl@0: #endif /* _STLP_WINCE */
sl@0: 
sl@0: //----------------------------------------------------------------------
sl@0: // Force instantiation of basic_streambuf
sl@0: 
sl@0: // not basic_streambuf<char>, because it's specialized.
sl@0: 
sl@0: #if !defined(_STLP_NO_FORCE_INSTANTIATE)
sl@0: #if !defined (_STLP_NO_WCHAR_T)
sl@0: template class basic_streambuf<wchar_t, char_traits<wchar_t> >;
sl@0: #endif /* INSTANTIATE_WIDE_STREAMS */
sl@0: #endif
sl@0: 
sl@0: _STLP_END_NAMESPACE
sl@0: 
sl@0: // Local Variables:
sl@0: // mode:C++
sl@0: // End: