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