1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/epoc32/include/stdapis/stlport/stl/_streambuf.h Wed Mar 31 12:33:34 2010 +0100
1.3 @@ -0,0 +1,537 @@
1.4 +/*
1.5 + * © Portions copyright (c) 2006-2007 Nokia Corporation. All rights reserved.
1.6 + *
1.7 + * Copyright (c) 1999
1.8 + * Silicon Graphics Computer Systems, Inc.
1.9 + *
1.10 + * Copyright (c) 1999
1.11 + * Boris Fomitchev
1.12 + *
1.13 + * This material is provided "as is", with absolutely no warranty expressed
1.14 + * or implied. Any use is at your own risk.
1.15 + *
1.16 + * Permission to use or copy this software for any purpose is hereby granted
1.17 + * without fee, provided the above notices are retained on all copies.
1.18 + * Permission to modify the code and to distribute modified code is granted,
1.19 + * provided the above notices are retained, and a notice that the code was
1.20 + * modified is included with the above copyright notice.
1.21 + *
1.22 + */
1.23 +#ifndef _STLP_INTERNAL_STREAMBUF
1.24 +#define _STLP_INTERNAL_STREAMBUF
1.25 +
1.26 +#ifndef _STLP_IOS_BASE_H
1.27 +#include <stl/_ios_base.h> // Needed for ios_base bitfield members.
1.28 + // <ios_base> includes <iosfwd>.
1.29 +#endif
1.30 +
1.31 +#ifndef _STLP_STDIO_FILE_H
1.32 +#include <stl/_stdio_file.h> // Declaration of struct FILE, and of
1.33 + // functions to manipulate it.
1.34 +#endif
1.35 +
1.36 +_STLP_BEGIN_NAMESPACE
1.37 +
1.38 +//----------------------------------------------------------------------
1.39 +// Class basic_streambuf<>, the base class of the streambuf hierarchy.
1.40 +
1.41 +// A basic_streambuf<> manages an input (get) area and an output (put)
1.42 +// area. Each is described by three pointers: a beginning, an end, and a
1.43 +// current position. basic_streambuf<> contains some very simple member
1.44 +// functions that manipulate those six pointers, but almost all of the real
1.45 +// functionality gets delegated to protected virtual member functions.
1.46 +// All of the public member functions are inline, and most of the protected
1.47 +// member functions are virtual.
1.48 +
1.49 +// Although basic_streambuf<> is not abstract, it is useful only as a base
1.50 +// class. Its virtual member functions have default definitions such that
1.51 +// reading from a basic_streambuf<> will always yield EOF, and writing to a
1.52 +// basic_streambuf<> will always fail.
1.53 +
1.54 +// The second template parameter, _Traits, defaults to char_traits<_CharT>.
1.55 +// The default is declared in header <iosfwd>, and it isn't declared here
1.56 +// because C++ language rules do not allow it to be declared twice.
1.57 +
1.58 +template <class _CharT, class _Traits>
1.59 +#ifdef __SYMBIAN32__
1.60 +class basic_streambuf
1.61 +#else
1.62 +class basic_streambuf
1.63 +#endif
1.64 +{
1.65 + friend class basic_istream<_CharT, _Traits>;
1.66 + friend class basic_ostream<_CharT, _Traits>;
1.67 +
1.68 +public: // Typedefs.
1.69 + typedef _CharT char_type;
1.70 + typedef typename _Traits::int_type int_type;
1.71 + typedef typename _Traits::pos_type pos_type;
1.72 + typedef typename _Traits::off_type off_type;
1.73 + typedef _Traits traits_type;
1.74 +
1.75 +private: // Data members.
1.76 +
1.77 + char_type* _M_gbegin; // Beginning of get area
1.78 + char_type* _M_gnext; // Current position within the get area
1.79 + char_type* _M_gend; // End of get area
1.80 +
1.81 + char_type* _M_pbegin; // Beginning of put area
1.82 + char_type* _M_pnext; // Current position within the put area
1.83 + char_type* _M_pend; // End of put area
1.84 +
1.85 + locale _M_locale; // The streambuf's locale object
1.86 +
1.87 +public: // Extension: locking, for thread safety.
1.88 + _STLP_mutex _M_lock;
1.89 +
1.90 +public: // Destructor.
1.91 + _STLP_DECLSPEC virtual ~basic_streambuf();
1.92 +
1.93 +protected: // The default constructor.
1.94 + _STLP_DECLSPEC basic_streambuf();
1.95 +
1.96 +protected: // Protected interface to the get area.
1.97 + char_type* eback() const { return _M_gbegin; } // Beginning
1.98 + char_type* gptr() const { return _M_gnext; } // Current position
1.99 + char_type* egptr() const { return _M_gend; } // End
1.100 +
1.101 + void gbump(int __n) { _M_gnext += __n; }
1.102 + void setg(char_type* __gbegin, char_type* __gnext, char_type* __gend) {
1.103 + _M_gbegin = __gbegin;
1.104 + _M_gnext = __gnext;
1.105 + _M_gend = __gend;
1.106 + }
1.107 +
1.108 +public:
1.109 + // An alternate public interface to the above functions
1.110 + // which allows us to avoid using templated friends which
1.111 + // are not supported on some compilers.
1.112 +
1.113 + char_type* _M_eback() const { return eback(); }
1.114 + char_type* _M_gptr() const { return gptr(); }
1.115 + char_type* _M_egptr() const { return egptr(); }
1.116 + void _M_gbump(int __n) { gbump(__n); }
1.117 + void _M_setg(char_type* __gbegin, char_type* __gnext, char_type* __gend)
1.118 + { setg(__gbegin, __gnext, __gend); }
1.119 +
1.120 +protected: // Protected interface to the put area
1.121 +
1.122 + char_type* pbase() const { return _M_pbegin; } // Beginning
1.123 + char_type* pptr() const { return _M_pnext; } // Current position
1.124 + char_type* epptr() const { return _M_pend; } // End
1.125 +
1.126 + void pbump(int __n) { _M_pnext += __n; }
1.127 + void setp(char_type* __pbegin, char_type* __pend) {
1.128 + _M_pbegin = __pbegin;
1.129 + _M_pnext = __pbegin;
1.130 + _M_pend = __pend;
1.131 + }
1.132 +
1.133 +protected: // Virtual buffer management functions.
1.134 +
1.135 + _STLP_DECLSPEC virtual basic_streambuf<_CharT, _Traits>* setbuf(char_type*, streamsize);
1.136 +
1.137 + // Alters the stream position, using an integer offset. In this
1.138 + // class seekoff does nothing; subclasses are expected to override it.
1.139 + _STLP_DECLSPEC virtual pos_type seekoff(off_type, ios_base::seekdir,
1.140 + ios_base::openmode = ios_base::in | ios_base::out);
1.141 +
1.142 + // Alters the stream position, using a previously obtained streampos. In
1.143 + // this class seekpos does nothing; subclasses are expected to override it.
1.144 + _STLP_DECLSPEC virtual pos_type
1.145 + seekpos(pos_type, ios_base::openmode = ios_base::in | ios_base::out);
1.146 +
1.147 + // Synchronizes (i.e. flushes) the buffer. All subclasses are expected to
1.148 + // override this virtual member function.
1.149 + _STLP_DECLSPEC virtual int sync();
1.150 +
1.151 +
1.152 +public: // Buffer management.
1.153 + basic_streambuf<_CharT, _Traits>* pubsetbuf(char_type* __s, streamsize __n)
1.154 + { return this->setbuf(__s, __n); }
1.155 +
1.156 + pos_type pubseekoff(off_type __offset, ios_base::seekdir __way,
1.157 + ios_base::openmode __mod = ios_base::in | ios_base::out)
1.158 + { return this->seekoff(__offset, __way, __mod); }
1.159 +
1.160 + pos_type pubseekpos(pos_type __sp,
1.161 + ios_base::openmode __mod = ios_base::in | ios_base::out)
1.162 + { return this->seekpos(__sp, __mod); }
1.163 +
1.164 + int pubsync() { return this->sync(); }
1.165 +
1.166 +protected: // Virtual get area functions, as defined in
1.167 + // 17.5.2.4.3 and 17.5.2.4.4 of the standard.
1.168 + // Returns a lower bound on the number of characters that we can read,
1.169 + // with underflow, before reaching end of file. (-1 is a special value:
1.170 + // it means that underflow will fail.) Most subclasses should probably
1.171 + // override this virtual member function.
1.172 + _STLP_DECLSPEC virtual streamsize showmanyc();
1.173 +
1.174 + // Reads up to __n characters. Return value is the number of
1.175 + // characters read.
1.176 + _STLP_DECLSPEC virtual streamsize xsgetn(char_type* __s, streamsize __n);
1.177 +
1.178 + // Called when there is no read position, i.e. when gptr() is null
1.179 + // or when gptr() >= egptr(). Subclasses are expected to override
1.180 + // this virtual member function.
1.181 + _STLP_DECLSPEC virtual int_type underflow();
1.182 +
1.183 + // Similar to underflow(), but used for unbuffered input. Most
1.184 + // subclasses should probably override this virtual member function.
1.185 + _STLP_DECLSPEC virtual int_type uflow();
1.186 +
1.187 + // Called when there is no putback position, i.e. when gptr() is null
1.188 + // or when gptr() == eback(). All subclasses are expected to override
1.189 + // this virtual member function.
1.190 + _STLP_DECLSPEC virtual int_type pbackfail(int_type = traits_type::eof());
1.191 +
1.192 +protected: // Virtual put area functions, as defined in
1.193 + // 27.5.2.4.5 of the standard.
1.194 +
1.195 + // Writes up to __n characters. Return value is the number of characters
1.196 + // written.
1.197 + _STLP_DECLSPEC virtual streamsize xsputn(const char_type* __s, streamsize __n);
1.198 +
1.199 + // Extension: writes up to __n copies of __c. Return value is the number
1.200 + // of characters written.
1.201 + _STLP_DECLSPEC virtual streamsize _M_xsputnc(char_type __c, streamsize __n);
1.202 +
1.203 + // Called when there is no write position. All subclasses are expected to
1.204 + // override this virtual member function.
1.205 + _STLP_DECLSPEC virtual int_type overflow(int_type = traits_type::eof());
1.206 +
1.207 +public: // Public members for writing characters.
1.208 + // Write a single character.
1.209 + int_type sputc(char_type __c) {
1.210 + return ((_M_pnext < _M_pend) ? _Traits::to_int_type(*_M_pnext++ = __c)
1.211 + : this->overflow(_Traits::to_int_type(__c)));
1.212 + }
1.213 +
1.214 + // Write __n characters.
1.215 + streamsize sputn(const char_type* __s, streamsize __n)
1.216 + { return this->xsputn(__s, __n); }
1.217 +
1.218 + // Extension: write __n copies of __c.
1.219 + streamsize _M_sputnc(char_type __c, streamsize __n)
1.220 + { return this->_M_xsputnc(__c, __n); }
1.221 +
1.222 +private: // Helper functions.
1.223 + _STLP_DECLSPEC int_type _M_snextc_aux();
1.224 +
1.225 +
1.226 +public: // Public members for reading characters.
1.227 + streamsize in_avail() {
1.228 + return (_M_gnext < _M_gend) ? (_M_gend - _M_gnext) : this->showmanyc();
1.229 + }
1.230 +
1.231 + // Advance to the next character and return it.
1.232 + int_type snextc() {
1.233 + return ( _M_gend - _M_gnext > 1 ?
1.234 + _Traits::to_int_type(*++_M_gnext) :
1.235 + this->_M_snextc_aux());
1.236 + }
1.237 +
1.238 + // Return the current character and advance to the next.
1.239 + int_type sbumpc() {
1.240 + return _M_gnext < _M_gend ? _Traits::to_int_type(*_M_gnext++)
1.241 + : this->uflow();
1.242 + }
1.243 +
1.244 + // Return the current character without advancing to the next.
1.245 + int_type sgetc() {
1.246 + return _M_gnext < _M_gend ? _Traits::to_int_type(*_M_gnext)
1.247 + : this->underflow();
1.248 + }
1.249 +
1.250 + streamsize sgetn(char_type* __s, streamsize __n)
1.251 + { return this->xsgetn(__s, __n); }
1.252 +
1.253 + int_type sputbackc(char_type __c) {
1.254 + return ((_M_gbegin < _M_gnext) && _Traits::eq(__c, *(_M_gnext - 1)))
1.255 + ? _Traits::to_int_type(*--_M_gnext)
1.256 + : this->pbackfail(_Traits::to_int_type(__c));
1.257 + }
1.258 +
1.259 + int_type sungetc() {
1.260 + return (_M_gbegin < _M_gnext)
1.261 + ? _Traits::to_int_type(*--_M_gnext)
1.262 + : this->pbackfail();
1.263 + }
1.264 +
1.265 +protected: // Virtual locale functions.
1.266 +
1.267 + // This is a hook, called by pubimbue() just before pubimbue()
1.268 + // sets the streambuf's locale to __loc. Note that imbue should
1.269 + // not (and cannot, since it has no access to streambuf's private
1.270 + // members) set the streambuf's locale itself.
1.271 + _STLP_DECLSPEC virtual void imbue(const locale&);
1.272 +
1.273 +public: // Locale-related functions.
1.274 + _STLP_DECLSPEC locale pubimbue(const locale&);
1.275 + locale getloc() const { return _M_locale; }
1.276 +
1.277 +# ifndef _STLP_NO_ANACHRONISMS
1.278 + void stossc() { this->sbumpc(); }
1.279 +# endif
1.280 +#if defined(__MVS__) || defined(__OS400__)
1.281 +private: // Data members.
1.282 +
1.283 + char_type* _M_gbegin; // Beginning of get area
1.284 + char_type* _M_gnext; // Current position within the get area
1.285 + char_type* _M_gend; // End of get area
1.286 +
1.287 + char_type* _M_pbegin; // Beginning of put area
1.288 + char_type* _M_pnext; // Current position within the put area
1.289 + char_type* _M_pend; // End of put area
1.290 +#endif
1.291 +};
1.292 +
1.293 +
1.294 +//----------------------------------------------------------------------
1.295 +// Specialization: basic_streambuf<char, char_traits<char> >
1.296 +
1.297 +// We implement basic_streambuf<char, char_traits<char> > very differently
1.298 +// than the general basic_streambuf<> template. The main reason for this
1.299 +// difference is a requirement in the C++ standard: the standard input
1.300 +// and output streams cin and cout are required by default to be synchronized
1.301 +// with the C library components stdin and stdout. This means it must be
1.302 +// possible to synchronize a basic_streambuf<char> with a C buffer.
1.303 +//
1.304 +// There are two basic ways to do that. First, the streambuf could be
1.305 +// unbuffered and delegate all buffering to stdio operations. This
1.306 +// would be correct, but slow: it would require at least one virtual
1.307 +// function call for every character. Second, the streambuf could use
1.308 +// a C stdio FILE as its buffer.
1.309 +//
1.310 +// We choose the latter option. Every streambuf has pointers to two
1.311 +// FILE objects, one for the get area and one for the put area. Ordinarily
1.312 +// it just uses a FILE object as a convenient way to package the three
1.313 +// get/put area pointers. If a basic_streambuf<char> is synchronized with
1.314 +// a stdio stream, though, then the pointers are to a FILE object that's
1.315 +// also used by the C library.
1.316 +//
1.317 +// The header <stl/_stdio_file.h> encapsulates the implementation details
1.318 +// of struct FILE. It contains low-level inline functions that convert
1.319 +// between whe FILE's internal representation and the three-pointer
1.320 +// representation that basic_streambuf<> needs.
1.321 +
1.322 +_STLP_TEMPLATE_NULL
1.323 +#ifdef __SYMBIAN32__
1.324 +class basic_streambuf<char, char_traits<char> >
1.325 +#else
1.326 +class _STLP_CLASS_DECLSPEC basic_streambuf<char, char_traits<char> >
1.327 +#endif
1.328 +{
1.329 + friend class basic_istream<char, char_traits<char> >;
1.330 + friend class basic_ostream<char, char_traits<char> >;
1.331 +public: // Typedefs.
1.332 + typedef char char_type;
1.333 + typedef char_traits<char>::int_type int_type;
1.334 + typedef char_traits<char>::pos_type pos_type;
1.335 + typedef char_traits<char>::off_type off_type;
1.336 + typedef char_traits<char> traits_type;
1.337 +
1.338 +private: // Data members.
1.339 +
1.340 + FILE* _M_get; // Reference to the get area
1.341 + FILE* _M_put; // Reference to the put area
1.342 +
1.343 +#if defined(__hpux)
1.344 + _FILEX _M_default_get; // Get area, unless we're syncing with stdio.
1.345 + _FILEX _M_default_put; // Put area, unless we're syncing with stdio.
1.346 +#else
1.347 + FILE _M_default_get; // Get area, unless we're syncing with stdio.
1.348 + FILE _M_default_put; // Put area, unless we're syncing with stdio.
1.349 +#endif
1.350 +
1.351 + locale _M_locale;
1.352 +
1.353 +public: // Extension: locking, for thread safety.
1.354 + _STLP_mutex _M_lock;
1.355 +
1.356 +public: // Destructor.
1.357 + _STLP_DECLSPEC virtual ~basic_streambuf _STLP_PSPEC2(char, char_traits<char>) ();
1.358 +
1.359 +public:
1.360 + // The default constructor; defined here inline as some compilers require it
1.361 + _STLP_DECLSPEC basic_streambuf _STLP_PSPEC2(char, char_traits<char>) ();
1.362 + // Extension: a constructor for streambufs synchronized with C stdio files.
1.363 + _STLP_DECLSPEC basic_streambuf _STLP_PSPEC2(char, char_traits<char>) (FILE* __get, FILE* __put);
1.364 +
1.365 +protected: // Protected interface to the get area.
1.366 + char_type* eback() const { return _FILE_I_begin(_M_get); }
1.367 + char_type* gptr() const { return _FILE_I_next(_M_get); }
1.368 + char_type* egptr() const { return _FILE_I_end(_M_get); }
1.369 + void gbump(int __n) { _FILE_I_bump(_M_get, __n); }
1.370 + void setg(char_type* __gbegin, char_type* __gnext, char_type* __gend)
1.371 + {
1.372 + _FILE_I_set(_M_get, __gbegin, __gnext, __gend);
1.373 +#ifdef __SYMBIAN32__
1.374 + _change_input_mode();
1.375 +#endif
1.376 + }
1.377 +
1.378 +public:
1.379 + // An alternate public interface to the above functions
1.380 + // which allows us to avoid using templated friends which
1.381 + // are not supported on some compilers.
1.382 +
1.383 + char_type* _M_eback() const { return _FILE_I_begin(_M_get); }
1.384 + char_type* _M_gptr() const { return _FILE_I_next(_M_get); }
1.385 + char_type* _M_egptr() const { return _FILE_I_end(_M_get); }
1.386 +
1.387 + void _M_gbump(int __n) { _FILE_I_bump(_M_get, __n); }
1.388 + void _M_setg(char_type* __gbegin, char_type* __gnext, char_type* __gend)
1.389 + { _FILE_I_set(_M_get, __gbegin, __gnext, __gend); }
1.390 +
1.391 +protected: // Protected interface to the put area
1.392 + char_type* pbase() const { return _FILE_O_begin(_M_put); }
1.393 + char_type* pptr() const { return _FILE_O_next(_M_put); }
1.394 + char_type* epptr() const { return _FILE_O_end(_M_put); }
1.395 +
1.396 + void pbump(int __n) { _FILE_O_bump(_M_put, __n); }
1.397 + void setp(char_type* __pbegin, char_type* __pend)
1.398 + { _FILE_O_set(_M_put, __pbegin, __pbegin, __pend); }
1.399 +
1.400 +protected: // Virtual buffer-management functions.
1.401 + _STLP_DECLSPEC virtual basic_streambuf<char, char_traits<char> >* setbuf(char_type*, streamsize);
1.402 + _STLP_DECLSPEC virtual pos_type seekoff(off_type, ios_base::seekdir,
1.403 + ios_base::openmode = ios_base::in | ios_base::out);
1.404 + _STLP_DECLSPEC virtual pos_type
1.405 + seekpos(pos_type, ios_base::openmode = ios_base::in | ios_base::out);
1.406 + _STLP_DECLSPEC virtual int sync();
1.407 +
1.408 +public: // Buffer management.
1.409 + basic_streambuf<char, char_traits<char> >* pubsetbuf(char_type* __s, streamsize __n)
1.410 + { return this->setbuf(__s, __n); }
1.411 +
1.412 + pos_type pubseekoff(off_type __offset, ios_base::seekdir __way,
1.413 + ios_base::openmode __mod = ios_base::in | ios_base::out)
1.414 + { return this->seekoff(__offset, __way, __mod); }
1.415 +
1.416 + pos_type pubseekpos(pos_type __sp,
1.417 + ios_base::openmode __mod = ios_base::in | ios_base::out)
1.418 + { return this->seekpos(__sp, __mod); }
1.419 +
1.420 + int pubsync() { return this->sync(); }
1.421 +
1.422 +protected: // Virtual get area functions.
1.423 + _STLP_DECLSPEC virtual streamsize showmanyc();
1.424 + _STLP_DECLSPEC virtual streamsize xsgetn(char_type* __s, streamsize __n);
1.425 + _STLP_DECLSPEC virtual int_type underflow();
1.426 + _STLP_DECLSPEC virtual int_type uflow();
1.427 + _STLP_DECLSPEC virtual int_type pbackfail(int_type __c = traits_type::eof());
1.428 +
1.429 +protected: // Virtual put area functions.
1.430 + _STLP_DECLSPEC virtual streamsize xsputn(const char_type* __s, streamsize __n);
1.431 + _STLP_DECLSPEC virtual streamsize _M_xsputnc(char_type __c, streamsize __n);
1.432 + _STLP_DECLSPEC virtual int_type overflow(int_type = traits_type::eof());
1.433 +#ifdef __SYMBIAN32__
1.434 + virtual int save_read_buffer () { return 0; }
1.435 + virtual void _change_input_mode() {};
1.436 +#endif
1.437 +public: // Public members for writing characters.
1.438 + // Write a single character.
1.439 + int_type sputc(char_type __c) {
1.440 + int_type __res;
1.441 + if( _FILE_O_avail(_M_put) > 0 )
1.442 + {
1.443 + _FILE_O_postincr(_M_put) = __c;
1.444 + __res = traits_type::to_int_type(__c);
1.445 + }
1.446 + else
1.447 + __res = this->overflow(traits_type::to_int_type(__c));
1.448 + return __res;
1.449 + }
1.450 +
1.451 + // Write __n characters.
1.452 + streamsize sputn(const char_type* __s, streamsize __n)
1.453 + { return this->xsputn(__s, __n); }
1.454 +
1.455 + // Extension: write __n copies of __c.
1.456 + streamsize _M_sputnc(char_type __c, streamsize __n)
1.457 + { return this->_M_xsputnc(__c, __n); }
1.458 +
1.459 +private: // Helper functions.
1.460 + _STLP_DECLSPEC int_type _M_snextc_aux();
1.461 +
1.462 +public: // Public members for reading characters.
1.463 + streamsize in_avail()
1.464 + { return _FILE_I_avail(_M_get) > 0 ? _FILE_I_avail(_M_get)
1.465 +#ifdef __SYMBIAN32__
1.466 + + save_read_buffer()
1.467 +#endif
1.468 + : this->showmanyc(); }
1.469 +
1.470 + // Advance to the next character and return it.
1.471 + int_type snextc() {
1.472 + return _FILE_I_avail(_M_get) > 1
1.473 + ? traits_type::to_int_type(_FILE_I_preincr(_M_get))
1.474 + : this->_M_snextc_aux();
1.475 + }
1.476 +
1.477 + // Return the current character and advance to the next.
1.478 + int_type sbumpc() {
1.479 + return _FILE_I_avail(_M_get) > 0
1.480 + ? traits_type::to_int_type(_FILE_I_postincr(_M_get))
1.481 + : this->uflow();
1.482 + }
1.483 +
1.484 + // Return the current character without advancing to the next.
1.485 + int_type sgetc() {
1.486 + return _FILE_I_avail(_M_get) > 0
1.487 + ? traits_type::to_int_type(*_FILE_I_next(_M_get))
1.488 + : this->underflow();
1.489 + }
1.490 +
1.491 + streamsize sgetn(char_type* __s, streamsize __n)
1.492 + { return this->xsgetn(__s, __n); }
1.493 +
1.494 + int_type sputbackc(char_type __c) {
1.495 + return _FILE_I_begin(_M_get) < _FILE_I_next(_M_get) &&
1.496 + __c == *(_FILE_I_next(_M_get) - 1)
1.497 + ? traits_type::to_int_type(_FILE_I_predecr(_M_get))
1.498 + : this->pbackfail(traits_type::to_int_type(__c));
1.499 + }
1.500 +
1.501 + int_type sungetc() {
1.502 + return _FILE_I_begin(_M_get) < _FILE_I_next(_M_get)
1.503 + ? traits_type::to_int_type(_FILE_I_predecr(_M_get))
1.504 + : this->pbackfail();
1.505 + }
1.506 +
1.507 +protected: // Virtual locale functions.
1.508 + _STLP_DECLSPEC virtual void imbue(const locale&);
1.509 +public: // Locale-related functions.
1.510 + _STLP_DECLSPEC locale pubimbue(const locale&);
1.511 + locale getloc() const { return _M_locale; }
1.512 +
1.513 +# ifndef _STLP_NO_ANACHRONISMS
1.514 +public:
1.515 + void stossc() { this->sbumpc(); }
1.516 +# endif
1.517 +
1.518 +#if defined(__MVS__) || defined(__OS400__)
1.519 +private: // Data members.
1.520 +
1.521 + char_type* _M_gbegin; // Beginning of get area
1.522 + char_type* _M_gnext; // Current position within the get area
1.523 + char_type* _M_gend; // End of get area
1.524 +
1.525 + char_type* _M_pbegin; // Beginning of put area
1.526 + char_type* _M_pnext; // Current position within the put area
1.527 + char_type* _M_pend; // End of put area
1.528 +#endif
1.529 +
1.530 +};
1.531 +_STLP_END_NAMESPACE
1.532 +
1.533 +# if defined (_STLP_EXPOSE_STREAM_IMPLEMENTATION) && !defined (_STLP_LINK_TIME_INSTANTIATION)
1.534 +# include <stl/_streambuf.c>
1.535 +# endif
1.536 +
1.537 +#endif
1.538 +// Local Variables:
1.539 +// mode:C++
1.540 +// End: