1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/ossrv/genericopenlibs/cppstdlib/stl/src/stdio_streambuf.h	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,101 @@
     1.4 +/*
     1.5 + * Copyright (c) 1999
     1.6 + * Silicon Graphics Computer Systems, Inc.
     1.7 + *
     1.8 + * Copyright (c) 1999
     1.9 + * Boris Fomitchev
    1.10 + *
    1.11 + * This material is provided "as is", with absolutely no warranty expressed
    1.12 + * or implied. Any use is at your own risk.
    1.13 + *
    1.14 + * Permission to use or copy this software for any purpose is hereby granted
    1.15 + * without fee, provided the above notices are retained on all copies.
    1.16 + * Permission to modify the code and to distribute modified code is granted,
    1.17 + * provided the above notices are retained, and a notice that the code was
    1.18 + * modified is included with the above copyright notice.
    1.19 + *
    1.20 + */
    1.21 +
    1.22 +// This header is an extension.  It defines two streambufs:
    1.23 +// stdio_istreambuf, a read-only streambuf synchronized with a C stdio
    1.24 +// FILE object, and stdio_ostreambuf, a write-only streambuf
    1.25 +// synchronized with a C stdio FILE object.  Note that neither
    1.26 +// stdio_istreambuf nor stdio_ostreambuf is a template; both classes
    1.27 +// are derived from basic_streambuf<char, char_traits<char> >.
    1.28 +
    1.29 +// Note: the imbue() member function is a no-op.  In particular, these
    1.30 +// classes assume that codecvt<char, char, mbstate_t> is always an identity
    1.31 +// transformation.  This is true of the default locale, and of all locales
    1.32 +// defined for the C I/O library.  If you need to use a locale where
    1.33 +// the codecvt<char, char, mbstate_t> facet performs a nontrivial
    1.34 +// conversion, then you should use basic_filebuf<> instead of stdio_istreambuf
    1.35 +// or stdio_ostreambuf.  (If you don't understand what any of this means,
    1.36 +// then it's not a feature you need to worry about.  Locales where
    1.37 +// codecvt<char, char, mbstate_t> does something nontrivial are a rare
    1.38 +// corner case.)
    1.39 +
    1.40 +
    1.41 +#ifndef _STLP_STDIO_STREAMBUF
    1.42 +#define _STLP_STDIO_STREAMBUF
    1.43 +
    1.44 +#include <streambuf>
    1.45 +#include <cstdio>              // For FILE.
    1.46 +
    1.47 +_STLP_BEGIN_NAMESPACE
    1.48 +_STLP_MOVE_TO_PRIV_NAMESPACE
    1.49 +
    1.50 +// Base class for features common to stdio_istreambuf and stdio_ostreambuf
    1.51 +class stdio_streambuf_base :
    1.52 +  public basic_streambuf<char, char_traits<char> > /* FILE_basic_streambuf */ {
    1.53 +public:                         // Constructor, destructor.
    1.54 +  // The argument may not be null.  It must be an open file pointer.
    1.55 +  stdio_streambuf_base(FILE*);
    1.56 +
    1.57 +  // The destructor flushes the stream, but does not close it.
    1.58 +  ~stdio_streambuf_base();
    1.59 +
    1.60 +protected:                      // Virtual functions from basic_streambuf.
    1.61 +  streambuf* setbuf(char*, streamsize);
    1.62 +
    1.63 +  pos_type seekoff(off_type, ios_base::seekdir,
    1.64 +                   ios_base::openmode
    1.65 +                          = ios_base::in | ios_base::out);
    1.66 +  pos_type seekpos(pos_type,
    1.67 +                   ios_base::openmode
    1.68 +                          = ios_base::in | ios_base::out);
    1.69 +  int sync();
    1.70 +
    1.71 +protected:
    1.72 +  FILE* _M_file;
    1.73 +};
    1.74 +
    1.75 +class stdio_istreambuf : public stdio_streambuf_base {
    1.76 +public:                         // Constructor, destructor.
    1.77 +  stdio_istreambuf(FILE* __f) : stdio_streambuf_base(__f) {}
    1.78 +  ~stdio_istreambuf();
    1.79 +
    1.80 +protected:                      // Virtual functions from basic_streambuf.
    1.81 +  streamsize showmanyc();
    1.82 +  int_type underflow();
    1.83 +  int_type uflow();
    1.84 +  virtual int_type pbackfail(int_type c = traits_type::eof());
    1.85 +};
    1.86 +
    1.87 +class stdio_ostreambuf : public stdio_streambuf_base {
    1.88 +public:                         // Constructor, destructor.
    1.89 +  stdio_ostreambuf(FILE* __f) : stdio_streambuf_base(__f) {}
    1.90 +  ~stdio_ostreambuf();
    1.91 +
    1.92 +protected:                      // Virtual functions from basic_streambuf.
    1.93 +  streamsize showmanyc();
    1.94 +  int_type overflow(int_type c = traits_type::eof());
    1.95 +};
    1.96 +
    1.97 +_STLP_MOVE_TO_STD_NAMESPACE
    1.98 +_STLP_END_NAMESPACE
    1.99 +
   1.100 +#endif /* _STLP_STDIO_STREAMBUF */
   1.101 +
   1.102 +// Local Variables:
   1.103 +// mode:C++
   1.104 +// End: